./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_0670.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/float_req_bl_0670.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 ef3aead09e1d04146222ba824ba5fd2f951ea3a53aa52ba41e6fea5dd6ebb3d5 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-15 23:44:57,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 23:44:57,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 23:44:57,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 23:44:57,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 23:44:57,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 23:44:57,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 23:44:57,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 23:44:57,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 23:44:57,553 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 23:44:57,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 23:44:57,555 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 23:44:57,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 23:44:57,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 23:44:57,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 23:44:57,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 23:44:57,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 23:44:57,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 23:44:57,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 23:44:57,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 23:44:57,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 23:44:57,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 23:44:57,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 23:44:57,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 23:44:57,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 23:44:57,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 23:44:57,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 23:44:57,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 23:44:57,585 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 23:44:57,586 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 23:44:57,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 23:44:57,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 23:44:57,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 23:44:57,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 23:44:57,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 23:44:57,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 23:44:57,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 23:44:57,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 23:44:57,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 23:44:57,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 23:44:57,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 23:44:57,593 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 23:44:57,623 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 23:44:57,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 23:44:57,624 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 23:44:57,624 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 23:44:57,625 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 23:44:57,625 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 23:44:57,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 23:44:57,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 23:44:57,626 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 23:44:57,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 23:44:57,627 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 23:44:57,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 23:44:57,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 23:44:57,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 23:44:57,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 23:44:57,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 23:44:57,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 23:44:57,628 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 23:44:57,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 23:44:57,629 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 23:44:57,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 23:44:57,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 23:44:57,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 23:44:57,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 23:44:57,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:44:57,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 23:44:57,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 23:44:57,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 23:44:57,631 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 23:44:57,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 23:44:57,632 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 23:44:57,632 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 23:44:57,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 23:44:57,632 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 23:44:57,633 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef3aead09e1d04146222ba824ba5fd2f951ea3a53aa52ba41e6fea5dd6ebb3d5 [2021-12-15 23:44:57,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 23:44:57,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 23:44:57,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 23:44:57,876 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 23:44:57,877 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 23:44:57,878 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0670.c [2021-12-15 23:44:57,936 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a59e407f/f24a775af7d94b7fb8e702a43d01ce79/FLAG13cbbb7a4 [2021-12-15 23:44:58,321 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 23:44:58,323 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0670.c [2021-12-15 23:44:58,333 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a59e407f/f24a775af7d94b7fb8e702a43d01ce79/FLAG13cbbb7a4 [2021-12-15 23:44:58,343 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a59e407f/f24a775af7d94b7fb8e702a43d01ce79 [2021-12-15 23:44:58,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 23:44:58,346 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 23:44:58,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 23:44:58,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 23:44:58,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 23:44:58,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:44:58" (1/1) ... [2021-12-15 23:44:58,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a6a4fde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:44:58, skipping insertion in model container [2021-12-15 23:44:58,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:44:58" (1/1) ... [2021-12-15 23:44:58,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 23:44:58,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 23:44:58,547 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0670.c[5373,5386] [2021-12-15 23:44:58,550 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:44:58,557 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 23:44:58,596 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0670.c[5373,5386] [2021-12-15 23:44:58,597 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:44:58,613 INFO L208 MainTranslator]: Completed translation [2021-12-15 23:44:58,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:44:58 WrapperNode [2021-12-15 23:44:58,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 23:44:58,614 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 23:44:58,614 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 23:44:58,614 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 23:44:58,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:44:58" (1/1) ... [2021-12-15 23:44:58,628 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:44:58" (1/1) ... [2021-12-15 23:44:58,658 INFO L137 Inliner]: procedures = 20, calls = 82, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 236 [2021-12-15 23:44:58,662 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 23:44:58,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 23:44:58,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 23:44:58,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 23:44:58,668 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:44:58" (1/1) ... [2021-12-15 23:44:58,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:44:58" (1/1) ... [2021-12-15 23:44:58,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:44:58" (1/1) ... [2021-12-15 23:44:58,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:44:58" (1/1) ... [2021-12-15 23:44:58,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:44:58" (1/1) ... [2021-12-15 23:44:58,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:44:58" (1/1) ... [2021-12-15 23:44:58,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:44:58" (1/1) ... [2021-12-15 23:44:58,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 23:44:58,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 23:44:58,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 23:44:58,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 23:44:58,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:44:58" (1/1) ... [2021-12-15 23:44:58,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:44:58,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:44:58,722 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 23:44:58,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 23:44:58,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 23:44:58,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 23:44:58,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 23:44:58,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-15 23:44:58,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 23:44:58,762 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2021-12-15 23:44:58,766 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2021-12-15 23:44:58,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-12-15 23:44:58,766 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2021-12-15 23:44:58,766 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2021-12-15 23:44:58,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 23:44:58,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 23:44:58,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 23:44:58,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-12-15 23:44:58,767 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2021-12-15 23:44:58,767 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2021-12-15 23:44:58,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 23:44:58,855 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 23:44:58,856 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 23:44:59,144 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 23:44:59,150 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 23:44:59,150 INFO L301 CfgBuilder]: Removed 14 assume(true) statements. [2021-12-15 23:44:59,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:44:59 BoogieIcfgContainer [2021-12-15 23:44:59,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 23:44:59,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 23:44:59,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 23:44:59,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 23:44:59,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:44:58" (1/3) ... [2021-12-15 23:44:59,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41c5295f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:44:59, skipping insertion in model container [2021-12-15 23:44:59,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:44:58" (2/3) ... [2021-12-15 23:44:59,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41c5295f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:44:59, skipping insertion in model container [2021-12-15 23:44:59,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:44:59" (3/3) ... [2021-12-15 23:44:59,173 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0670.c [2021-12-15 23:44:59,177 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 23:44:59,178 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 23:44:59,220 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 23:44:59,225 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 23:44:59,225 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 23:44:59,250 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 90 states have (on average 1.6222222222222222) internal successors, (146), 91 states have internal predecessors, (146), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-15 23:44:59,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-15 23:44:59,256 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:44:59,257 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:44:59,257 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:44:59,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:44:59,266 INFO L85 PathProgramCache]: Analyzing trace with hash -935049918, now seen corresponding path program 1 times [2021-12-15 23:44:59,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:44:59,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688284799] [2021-12-15 23:44:59,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:44:59,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:44:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:44:59,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-15 23:44:59,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:44:59,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-15 23:44:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:44:59,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-15 23:44:59,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:44:59,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688284799] [2021-12-15 23:44:59,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688284799] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:44:59,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:44:59,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 23:44:59,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725622519] [2021-12-15 23:44:59,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:44:59,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 23:44:59,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:44:59,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 23:44:59,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 23:44:59,512 INFO L87 Difference]: Start difference. First operand has 102 states, 90 states have (on average 1.6222222222222222) internal successors, (146), 91 states have internal predecessors, (146), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-15 23:44:59,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:44:59,559 INFO L93 Difference]: Finished difference Result 196 states and 312 transitions. [2021-12-15 23:44:59,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 23:44:59,561 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2021-12-15 23:44:59,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:44:59,569 INFO L225 Difference]: With dead ends: 196 [2021-12-15 23:44:59,569 INFO L226 Difference]: Without dead ends: 98 [2021-12-15 23:44:59,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 23:44:59,578 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 23:44:59,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 23:44:59,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-12-15 23:44:59,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-12-15 23:44:59,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 87 states have (on average 1.4482758620689655) internal successors, (126), 87 states have internal predecessors, (126), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-15 23:44:59,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 140 transitions. [2021-12-15 23:44:59,628 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 140 transitions. Word has length 22 [2021-12-15 23:44:59,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:44:59,630 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 140 transitions. [2021-12-15 23:44:59,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-15 23:44:59,631 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 140 transitions. [2021-12-15 23:44:59,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-15 23:44:59,632 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:44:59,632 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:44:59,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 23:44:59,633 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:44:59,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:44:59,634 INFO L85 PathProgramCache]: Analyzing trace with hash 396491097, now seen corresponding path program 1 times [2021-12-15 23:44:59,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:44:59,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765292714] [2021-12-15 23:44:59,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:44:59,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:44:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 23:44:59,696 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 23:44:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 23:44:59,809 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 23:44:59,809 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-15 23:44:59,811 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-15 23:44:59,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 23:44:59,815 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-15 23:44:59,817 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-15 23:44:59,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 11:44:59 BoogieIcfgContainer [2021-12-15 23:44:59,878 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-15 23:44:59,878 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-15 23:44:59,878 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-15 23:44:59,879 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-15 23:44:59,879 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:44:59" (3/4) ... [2021-12-15 23:44:59,881 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-15 23:44:59,881 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-15 23:44:59,882 INFO L158 Benchmark]: Toolchain (without parser) took 1535.49ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 47.8MB in the beginning and 40.0MB in the end (delta: 7.8MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. [2021-12-15 23:44:59,882 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 83.9MB. Free memory is still 64.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 23:44:59,883 INFO L158 Benchmark]: CACSL2BoogieTranslator took 259.47ms. Allocated memory is still 83.9MB. Free memory was 47.6MB in the beginning and 56.9MB in the end (delta: -9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 23:44:59,884 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.81ms. Allocated memory is still 83.9MB. Free memory was 56.9MB in the beginning and 54.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 23:44:59,884 INFO L158 Benchmark]: Boogie Preprocessor took 32.23ms. Allocated memory is still 83.9MB. Free memory was 54.8MB in the beginning and 52.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 23:44:59,885 INFO L158 Benchmark]: RCFGBuilder took 456.66ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 52.4MB in the beginning and 76.9MB in the end (delta: -24.5MB). Peak memory consumption was 26.3MB. Max. memory is 16.1GB. [2021-12-15 23:44:59,885 INFO L158 Benchmark]: TraceAbstraction took 724.30ms. Allocated memory is still 100.7MB. Free memory was 76.3MB in the beginning and 40.6MB in the end (delta: 35.7MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2021-12-15 23:44:59,886 INFO L158 Benchmark]: Witness Printer took 3.17ms. Allocated memory is still 100.7MB. Free memory is still 40.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 23:44:59,888 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 83.9MB. Free memory is still 64.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 259.47ms. Allocated memory is still 83.9MB. Free memory was 47.6MB in the beginning and 56.9MB in the end (delta: -9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.81ms. Allocated memory is still 83.9MB. Free memory was 56.9MB in the beginning and 54.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.23ms. Allocated memory is still 83.9MB. Free memory was 54.8MB in the beginning and 52.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 456.66ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 52.4MB in the beginning and 76.9MB in the end (delta: -24.5MB). Peak memory consumption was 26.3MB. Max. memory is 16.1GB. * TraceAbstraction took 724.30ms. Allocated memory is still 100.7MB. Free memory was 76.3MB in the beginning and 40.6MB in the end (delta: 35.7MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 3.17ms. Allocated memory is still 100.7MB. Free memory is still 40.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 236]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 15, overapproximation of someUnaryDOUBLEoperation at line 47, overapproximation of bitwiseAnd at line 138, overapproximation of someBinaryArithmeticFLOAToperation at line 140. Possible FailurePath: [L32-L37] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L39-L44] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L46-L50] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L52-L54] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; [L120-L121] static const float tiny_atan2 = 1.0e-30, zero_atan2 = 0.0, pi_lo_atan2 = -8.7422776573e-08; VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, zero_atan2=0] [L226] float x = __VERIFIER_nondet_float(); [L227] float y = __VERIFIER_nondet_float(); [L229] CALL, EXPR isnan_float(x) VAL [\old(x)=1000000000000000000000000000003, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, zero_atan2=0] [L15] return x != x; VAL [\old(x)=1000000000000000000000000000003, \result=1, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000003, zero_atan2=0] [L229] RET, EXPR isnan_float(x) VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, isnan_float(x)=1, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000003, zero_atan2=0] [L229] isnan_float(x) || isnan_float(y) VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, isnan_float(x)=1, isnan_float(x) || isnan_float(y)=1, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000003, zero_atan2=0] [L229] COND TRUE isnan_float(x) || isnan_float(y) [L232] CALL, EXPR __ieee754_atan2f(y, x) [L124] float z; [L125] __int32_t k, m, hx, hy, ix, iy; VAL [\old(x)=1000000000000000000000000000003, \old(y)=1000000000000000000000000000002, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000003, y=1000000000000000000000000000002, zero_atan2=0] [L128] ieee_float_shape_type gf_u; [L129] gf_u.value = (x) [L130] EXPR gf_u.word [L130] (hx) = gf_u.word [L132] ix = hx & 0x7fffffff VAL [\old(x)=1000000000000000000000000000003, \old(y)=1000000000000000000000000000002, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, hx=-2, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000003, y=1000000000000000000000000000002, zero_atan2=0] [L134] ieee_float_shape_type gf_u; [L135] gf_u.value = (y) [L136] EXPR gf_u.word [L136] (hy) = gf_u.word [L138] iy = hy & 0x7fffffff VAL [\old(x)=1000000000000000000000000000003, \old(y)=1000000000000000000000000000002, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, hx=-2, hy=-1, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000003, y=1000000000000000000000000000002, zero_atan2=0] [L139] COND TRUE ((ix) > 0x7f800000L) || ((iy) > 0x7f800000L) [L140] return x + y; VAL [\old(x)=1000000000000000000000000000003, \old(y)=1000000000000000000000000000002, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, hx=-2, hy=-1, ix=2139095041, iy=2139095041, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000003, y=1000000000000000000000000000002, zero_atan2=0] [L232] RET, EXPR __ieee754_atan2f(y, x) [L232] float res = __ieee754_atan2f(y, x); [L235] CALL, EXPR isnan_float(res) VAL [\old(x)=1000000000000000000000000000001, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, zero_atan2=0] [L15] return x != x; VAL [\old(x)=1000000000000000000000000000001, \result=0, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000001, zero_atan2=0] [L235] RET, EXPR isnan_float(res) VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, isnan_float(res)=0, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=1000000000000000000000000000001, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000003, y=1000000000000000000000000000002, zero_atan2=0] [L235] COND TRUE !isnan_float(res) [L236] reach_error() VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=1000000000000000000000000000001, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000003, y=1000000000000000000000000000002, zero_atan2=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 102 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 145 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 145 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 21 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 3/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-15 23:44:59,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/float_req_bl_0670.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 ef3aead09e1d04146222ba824ba5fd2f951ea3a53aa52ba41e6fea5dd6ebb3d5 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-15 23:45:01,793 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 23:45:01,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 23:45:01,837 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 23:45:01,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 23:45:01,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 23:45:01,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 23:45:01,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 23:45:01,849 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 23:45:01,854 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 23:45:01,856 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 23:45:01,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 23:45:01,860 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 23:45:01,861 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 23:45:01,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 23:45:01,867 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 23:45:01,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 23:45:01,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 23:45:01,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 23:45:01,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 23:45:01,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 23:45:01,880 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 23:45:01,881 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 23:45:01,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 23:45:01,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 23:45:01,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 23:45:01,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 23:45:01,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 23:45:01,887 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 23:45:01,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 23:45:01,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 23:45:01,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 23:45:01,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 23:45:01,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 23:45:01,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 23:45:01,892 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 23:45:01,893 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 23:45:01,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 23:45:01,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 23:45:01,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 23:45:01,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 23:45:01,899 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 23:45:01,930 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 23:45:01,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 23:45:01,931 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 23:45:01,931 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 23:45:01,932 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 23:45:01,932 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 23:45:01,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 23:45:01,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 23:45:01,934 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 23:45:01,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 23:45:01,935 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 23:45:01,935 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 23:45:01,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 23:45:01,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 23:45:01,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 23:45:01,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 23:45:01,936 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 23:45:01,936 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 23:45:01,936 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 23:45:01,936 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 23:45:01,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 23:45:01,937 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 23:45:01,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 23:45:01,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 23:45:01,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 23:45:01,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 23:45:01,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:45:01,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 23:45:01,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 23:45:01,950 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 23:45:01,950 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 23:45:01,951 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 23:45:01,951 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 23:45:01,951 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 23:45:01,951 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 23:45:01,952 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 23:45:01,952 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 23:45:01,952 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef3aead09e1d04146222ba824ba5fd2f951ea3a53aa52ba41e6fea5dd6ebb3d5 [2021-12-15 23:45:02,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 23:45:02,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 23:45:02,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 23:45:02,250 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 23:45:02,250 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 23:45:02,252 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0670.c [2021-12-15 23:45:02,309 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bfbc5b10/d5f14a7c09d64f449f6f758fdc1088b8/FLAG0e12b9993 [2021-12-15 23:45:02,764 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 23:45:02,767 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0670.c [2021-12-15 23:45:02,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bfbc5b10/d5f14a7c09d64f449f6f758fdc1088b8/FLAG0e12b9993 [2021-12-15 23:45:02,793 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bfbc5b10/d5f14a7c09d64f449f6f758fdc1088b8 [2021-12-15 23:45:02,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 23:45:02,798 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 23:45:02,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 23:45:02,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 23:45:02,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 23:45:02,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:45:02" (1/1) ... [2021-12-15 23:45:02,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72615a41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:02, skipping insertion in model container [2021-12-15 23:45:02,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:45:02" (1/1) ... [2021-12-15 23:45:02,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 23:45:02,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 23:45:03,000 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0670.c[5373,5386] [2021-12-15 23:45:03,021 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:45:03,057 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 23:45:03,109 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0670.c[5373,5386] [2021-12-15 23:45:03,109 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:45:03,132 INFO L208 MainTranslator]: Completed translation [2021-12-15 23:45:03,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:03 WrapperNode [2021-12-15 23:45:03,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 23:45:03,134 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 23:45:03,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 23:45:03,134 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 23:45:03,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:03" (1/1) ... [2021-12-15 23:45:03,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:03" (1/1) ... [2021-12-15 23:45:03,195 INFO L137 Inliner]: procedures = 23, calls = 82, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 234 [2021-12-15 23:45:03,197 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 23:45:03,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 23:45:03,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 23:45:03,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 23:45:03,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:03" (1/1) ... [2021-12-15 23:45:03,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:03" (1/1) ... [2021-12-15 23:45:03,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:03" (1/1) ... [2021-12-15 23:45:03,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:03" (1/1) ... [2021-12-15 23:45:03,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:03" (1/1) ... [2021-12-15 23:45:03,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:03" (1/1) ... [2021-12-15 23:45:03,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:03" (1/1) ... [2021-12-15 23:45:03,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 23:45:03,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 23:45:03,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 23:45:03,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 23:45:03,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:03" (1/1) ... [2021-12-15 23:45:03,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:45:03,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:45:03,300 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 23:45:03,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 23:45:03,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 23:45:03,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-12-15 23:45:03,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 23:45:03,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 23:45:03,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-12-15 23:45:03,336 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2021-12-15 23:45:03,336 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2021-12-15 23:45:03,336 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2021-12-15 23:45:03,336 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2021-12-15 23:45:03,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 23:45:03,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 23:45:03,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 23:45:03,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-12-15 23:45:03,337 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2021-12-15 23:45:03,337 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2021-12-15 23:45:03,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 23:45:03,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 23:45:03,488 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 23:45:03,489 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 23:45:14,331 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 23:45:14,337 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 23:45:14,337 INFO L301 CfgBuilder]: Removed 14 assume(true) statements. [2021-12-15 23:45:14,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:45:14 BoogieIcfgContainer [2021-12-15 23:45:14,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 23:45:14,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 23:45:14,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 23:45:14,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 23:45:14,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:45:02" (1/3) ... [2021-12-15 23:45:14,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a30b68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:45:14, skipping insertion in model container [2021-12-15 23:45:14,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:45:03" (2/3) ... [2021-12-15 23:45:14,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a30b68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:45:14, skipping insertion in model container [2021-12-15 23:45:14,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:45:14" (3/3) ... [2021-12-15 23:45:14,345 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0670.c [2021-12-15 23:45:14,349 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 23:45:14,350 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 23:45:14,382 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 23:45:14,389 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 23:45:14,389 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 23:45:14,401 INFO L276 IsEmpty]: Start isEmpty. Operand has 101 states, 89 states have (on average 1.6292134831460674) internal successors, (145), 90 states have internal predecessors, (145), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-15 23:45:14,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-15 23:45:14,405 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:45:14,406 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:45:14,406 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:45:14,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:45:14,410 INFO L85 PathProgramCache]: Analyzing trace with hash 187834432, now seen corresponding path program 1 times [2021-12-15 23:45:14,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 23:45:14,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1258509522] [2021-12-15 23:45:14,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:45:14,421 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 23:45:14,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 23:45:14,424 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 23:45:14,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 23:45:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:45:15,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-15 23:45:15,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:45:15,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:45:15,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 23:45:15,306 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 23:45:15,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1258509522] [2021-12-15 23:45:15,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1258509522] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:45:15,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:45:15,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 23:45:15,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152274459] [2021-12-15 23:45:15,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:45:15,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 23:45:15,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 23:45:15,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 23:45:15,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 23:45:15,335 INFO L87 Difference]: Start difference. First operand has 101 states, 89 states have (on average 1.6292134831460674) internal successors, (145), 90 states have internal predecessors, (145), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-15 23:45:15,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:45:15,360 INFO L93 Difference]: Finished difference Result 194 states and 310 transitions. [2021-12-15 23:45:15,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 23:45:15,362 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2021-12-15 23:45:15,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:45:15,368 INFO L225 Difference]: With dead ends: 194 [2021-12-15 23:45:15,368 INFO L226 Difference]: Without dead ends: 97 [2021-12-15 23:45:15,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 23:45:15,374 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 23:45:15,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 23:45:15,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-12-15 23:45:15,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2021-12-15 23:45:15,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 86 states have (on average 1.4534883720930232) internal successors, (125), 86 states have internal predecessors, (125), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-15 23:45:15,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 139 transitions. [2021-12-15 23:45:15,412 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 139 transitions. Word has length 21 [2021-12-15 23:45:15,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:45:15,413 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 139 transitions. [2021-12-15 23:45:15,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-15 23:45:15,414 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 139 transitions. [2021-12-15 23:45:15,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-15 23:45:15,416 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:45:15,416 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:45:15,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-15 23:45:15,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 23:45:15,632 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:45:15,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:45:15,632 INFO L85 PathProgramCache]: Analyzing trace with hash 769881417, now seen corresponding path program 1 times [2021-12-15 23:45:15,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 23:45:15,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [224200306] [2021-12-15 23:45:15,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:45:15,634 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 23:45:15,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 23:45:15,635 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 23:45:15,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-15 23:45:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:45:16,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-15 23:45:16,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:45:19,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:45:19,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 23:45:30,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-15 23:45:30,461 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 23:45:30,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [224200306] [2021-12-15 23:45:30,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [224200306] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 23:45:30,461 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-15 23:45:30,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2021-12-15 23:45:30,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449111093] [2021-12-15 23:45:30,462 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-15 23:45:30,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-15 23:45:30,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 23:45:30,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-15 23:45:30,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2021-12-15 23:45:30,467 INFO L87 Difference]: Start difference. First operand 97 states and 139 transitions. Second operand has 21 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-15 23:45:42,768 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-15 23:45:44,027 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-15 23:45:46,641 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-15 23:45:48,622 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-15 23:45:54,335 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-15 23:45:56,978 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-15 23:45:59,611 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-15 23:46:00,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:46:00,614 INFO L93 Difference]: Finished difference Result 165 states and 239 transitions. [2021-12-15 23:46:00,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-15 23:46:00,615 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 23 [2021-12-15 23:46:00,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:46:00,621 INFO L225 Difference]: With dead ends: 165 [2021-12-15 23:46:00,621 INFO L226 Difference]: Without dead ends: 157 [2021-12-15 23:46:00,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2021-12-15 23:46:00,623 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 357 mSDsluCounter, 1280 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 22 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 320 IncrementalHoareTripleChecker+Unchecked, 26.4s IncrementalHoareTripleChecker+Time [2021-12-15 23:46:00,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 1383 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 371 Invalid, 4 Unknown, 320 Unchecked, 26.4s Time] [2021-12-15 23:46:00,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-12-15 23:46:00,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 105. [2021-12-15 23:46:00,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 94 states have (on average 1.4148936170212767) internal successors, (133), 94 states have internal predecessors, (133), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-15 23:46:00,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 147 transitions. [2021-12-15 23:46:00,640 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 147 transitions. Word has length 23 [2021-12-15 23:46:00,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:46:00,641 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 147 transitions. [2021-12-15 23:46:00,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-15 23:46:00,641 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 147 transitions. [2021-12-15 23:46:00,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-15 23:46:00,642 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:46:00,643 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:46:00,668 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-15 23:46:00,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 23:46:00,848 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:46:00,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:46:00,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1728789200, now seen corresponding path program 1 times [2021-12-15 23:46:00,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 23:46:00,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1847790221] [2021-12-15 23:46:00,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:46:00,849 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 23:46:00,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 23:46:00,850 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 23:46:00,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-15 23:46:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:46:01,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-15 23:46:01,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:46:05,252 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-15 23:46:05,252 INFO L328 TraceCheckSpWp]: Computing backward predicates...