./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/sqrt_poly2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/sqrt_poly2.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 14164d07a16e34a605f7e42a9694dd7b1f0302594742e37b160cf821b53bc94e --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 10:26:10,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 10:26:10,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 10:26:10,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 10:26:10,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 10:26:10,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 10:26:10,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 10:26:10,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 10:26:10,645 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 10:26:10,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 10:26:10,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 10:26:10,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 10:26:10,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 10:26:10,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 10:26:10,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 10:26:10,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 10:26:10,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 10:26:10,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 10:26:10,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 10:26:10,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 10:26:10,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 10:26:10,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 10:26:10,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 10:26:10,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 10:26:10,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 10:26:10,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 10:26:10,658 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 10:26:10,659 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 10:26:10,659 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 10:26:10,659 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 10:26:10,660 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 10:26:10,660 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 10:26:10,661 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 10:26:10,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 10:26:10,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 10:26:10,662 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 10:26:10,662 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 10:26:10,663 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 10:26:10,663 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 10:26:10,663 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 10:26:10,664 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 10:26:10,665 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 10:26:10,678 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 10:26:10,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 10:26:10,678 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 10:26:10,679 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 10:26:10,679 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 10:26:10,679 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 10:26:10,680 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 10:26:10,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 10:26:10,680 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 10:26:10,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 10:26:10,681 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 10:26:10,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 10:26:10,681 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 10:26:10,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 10:26:10,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 10:26:10,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 10:26:10,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 10:26:10,681 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 10:26:10,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 10:26:10,682 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 10:26:10,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 10:26:10,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 10:26:10,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 10:26:10,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 10:26:10,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:26:10,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 10:26:10,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 10:26:10,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 10:26:10,683 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 10:26:10,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 10:26:10,683 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 10:26:10,684 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 10:26:10,684 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 10:26:10,684 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 10:26:10,684 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14164d07a16e34a605f7e42a9694dd7b1f0302594742e37b160cf821b53bc94e [2021-12-15 10:26:10,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 10:26:10,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 10:26:10,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 10:26:10,855 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 10:26:10,855 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 10:26:10,856 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/sqrt_poly2.c [2021-12-15 10:26:10,911 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42aff736c/af64d0bb8cd54e7dbddc994ebf5093f5/FLAGd687fd72e [2021-12-15 10:26:11,287 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 10:26:11,294 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_poly2.c [2021-12-15 10:26:11,299 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42aff736c/af64d0bb8cd54e7dbddc994ebf5093f5/FLAGd687fd72e [2021-12-15 10:26:11,307 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42aff736c/af64d0bb8cd54e7dbddc994ebf5093f5 [2021-12-15 10:26:11,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 10:26:11,310 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 10:26:11,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 10:26:11,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 10:26:11,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 10:26:11,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:26:11" (1/1) ... [2021-12-15 10:26:11,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cc365b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:26:11, skipping insertion in model container [2021-12-15 10:26:11,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:26:11" (1/1) ... [2021-12-15 10:26:11,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 10:26:11,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 10:26:11,413 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-benchs/sqrt_poly2.c[587,600] [2021-12-15 10:26:11,439 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:26:11,445 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 10:26:11,466 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-benchs/sqrt_poly2.c[587,600] [2021-12-15 10:26:11,492 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:26:11,503 INFO L208 MainTranslator]: Completed translation [2021-12-15 10:26:11,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:26:11 WrapperNode [2021-12-15 10:26:11,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 10:26:11,504 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 10:26:11,504 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 10:26:11,504 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 10:26:11,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:26:11" (1/1) ... [2021-12-15 10:26:11,524 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:26:11" (1/1) ... [2021-12-15 10:26:11,542 INFO L137 Inliner]: procedures = 18, calls = 20, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 66 [2021-12-15 10:26:11,542 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 10:26:11,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 10:26:11,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 10:26:11,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 10:26:11,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:26:11" (1/1) ... [2021-12-15 10:26:11,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:26:11" (1/1) ... [2021-12-15 10:26:11,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:26:11" (1/1) ... [2021-12-15 10:26:11,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:26:11" (1/1) ... [2021-12-15 10:26:11,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:26:11" (1/1) ... [2021-12-15 10:26:11,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:26:11" (1/1) ... [2021-12-15 10:26:11,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:26:11" (1/1) ... [2021-12-15 10:26:11,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 10:26:11,566 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 10:26:11,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 10:26:11,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 10:26:11,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:26:11" (1/1) ... [2021-12-15 10:26:11,572 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:26:11,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:26:11,612 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 10:26:11,630 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 10:26:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 10:26:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 10:26:11,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 10:26:11,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-15 10:26:11,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 10:26:11,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-12-15 10:26:11,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 10:26:11,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 10:26:11,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 10:26:11,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 10:26:11,697 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 10:26:11,699 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 10:26:11,810 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 10:26:11,814 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 10:26:11,815 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-15 10:26:11,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:26:11 BoogieIcfgContainer [2021-12-15 10:26:11,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 10:26:11,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 10:26:11,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 10:26:11,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 10:26:11,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:26:11" (1/3) ... [2021-12-15 10:26:11,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a912983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:26:11, skipping insertion in model container [2021-12-15 10:26:11,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:26:11" (2/3) ... [2021-12-15 10:26:11,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a912983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:26:11, skipping insertion in model container [2021-12-15 10:26:11,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:26:11" (3/3) ... [2021-12-15 10:26:11,821 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_poly2.c [2021-12-15 10:26:11,825 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 10:26:11,835 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 10:26:11,893 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 10:26:11,898 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 10:26:11,911 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 10:26:11,924 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:26:11,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-15 10:26:11,943 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:26:11,944 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:26:11,944 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:26:11,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:26:11,948 INFO L85 PathProgramCache]: Analyzing trace with hash -594069783, now seen corresponding path program 1 times [2021-12-15 10:26:11,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:26:11,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335762584] [2021-12-15 10:26:11,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:26:11,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:26:12,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:26:12,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 10:26:12,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:26:12,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335762584] [2021-12-15 10:26:12,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335762584] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 10:26:12,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 10:26:12,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 10:26:12,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129839067] [2021-12-15 10:26:12,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 10:26:12,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 10:26:12,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 10:26:12,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 10:26:12,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 10:26:12,120 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:26:12,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:26:12,134 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2021-12-15 10:26:12,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 10:26:12,155 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-15 10:26:12,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:26:12,160 INFO L225 Difference]: With dead ends: 25 [2021-12-15 10:26:12,160 INFO L226 Difference]: Without dead ends: 10 [2021-12-15 10:26:12,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 10:26:12,167 INFO L933 BasicCegarLoop]: 14 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, 14 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 10:26:12,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 10:26:12,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-12-15 10:26:12,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-12-15 10:26:12,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:26:12,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-12-15 10:26:12,193 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 9 [2021-12-15 10:26:12,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:26:12,193 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-12-15 10:26:12,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:26:12,193 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-12-15 10:26:12,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-15 10:26:12,194 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:26:12,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:26:12,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 10:26:12,195 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:26:12,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:26:12,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1180937579, now seen corresponding path program 1 times [2021-12-15 10:26:12,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:26:12,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15441209] [2021-12-15 10:26:12,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:26:12,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:26:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 10:26:12,280 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 10:26:12,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 10:26:12,339 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 10:26:12,339 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-15 10:26:12,340 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-15 10:26:12,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 10:26:12,344 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-15 10:26:12,346 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-15 10:26:12,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 10:26:12 BoogieIcfgContainer [2021-12-15 10:26:12,363 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-15 10:26:12,363 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-15 10:26:12,363 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-15 10:26:12,363 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-15 10:26:12,364 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:26:11" (3/4) ... [2021-12-15 10:26:12,366 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-15 10:26:12,366 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-15 10:26:12,366 INFO L158 Benchmark]: Toolchain (without parser) took 1056.47ms. Allocated memory was 77.6MB in the beginning and 109.1MB in the end (delta: 31.5MB). Free memory was 41.7MB in the beginning and 74.9MB in the end (delta: -33.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:26:12,367 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 77.6MB. Free memory was 41.0MB in the beginning and 40.9MB in the end (delta: 117.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:26:12,367 INFO L158 Benchmark]: CACSL2BoogieTranslator took 192.85ms. Allocated memory was 77.6MB in the beginning and 109.1MB in the end (delta: 31.5MB). Free memory was 41.5MB in the beginning and 87.3MB in the end (delta: -45.8MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2021-12-15 10:26:12,368 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.20ms. Allocated memory is still 109.1MB. Free memory was 87.2MB in the beginning and 87.3MB in the end (delta: -87.6kB). Peak memory consumption was 4.1MB. Max. memory is 16.1GB. [2021-12-15 10:26:12,368 INFO L158 Benchmark]: Boogie Preprocessor took 23.00ms. Allocated memory is still 109.1MB. Free memory was 87.3MB in the beginning and 86.5MB in the end (delta: 827.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:26:12,368 INFO L158 Benchmark]: RCFGBuilder took 249.69ms. Allocated memory is still 109.1MB. Free memory was 85.9MB in the beginning and 75.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 10:26:12,369 INFO L158 Benchmark]: TraceAbstraction took 545.57ms. Allocated memory is still 109.1MB. Free memory was 74.7MB in the beginning and 75.6MB in the end (delta: -841.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:26:12,369 INFO L158 Benchmark]: Witness Printer took 2.77ms. Allocated memory is still 109.1MB. Free memory is still 74.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:26:12,371 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 77.6MB. Free memory was 41.0MB in the beginning and 40.9MB in the end (delta: 117.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 192.85ms. Allocated memory was 77.6MB in the beginning and 109.1MB in the end (delta: 31.5MB). Free memory was 41.5MB in the beginning and 87.3MB in the end (delta: -45.8MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.20ms. Allocated memory is still 109.1MB. Free memory was 87.2MB in the beginning and 87.3MB in the end (delta: -87.6kB). Peak memory consumption was 4.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.00ms. Allocated memory is still 109.1MB. Free memory was 87.3MB in the beginning and 86.5MB in the end (delta: 827.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 249.69ms. Allocated memory is still 109.1MB. Free memory was 85.9MB in the beginning and 75.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 545.57ms. Allocated memory is still 109.1MB. Free memory was 74.7MB in the beginning and 75.6MB in the end (delta: -841.2kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.77ms. Allocated memory is still 109.1MB. Free memory is still 74.9MB. 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: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 38, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51, overapproximation of bitwiseAnd at line 37, overapproximation of someBinaryDOUBLEComparisonOperation at line 65. Possible FailurePath: [L17] double C0 = 1.414213538; [L18] double C1 = 0.229761391; [L19] double C2 = 1.296735525; [L20] double C3 = -0.901098370; [L21] double C4 = 0.493553400; [L22] double C5 = -0.118958666; VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] [L58] double x,y; [L60] x = __VERIFIER_nondet_double() [L61] CALL assume_abort_if_not(x >= 1. && x <= 1e10) [L12] COND FALSE !(!cond) VAL [\old(cond)=1, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, cond=1] [L61] RET assume_abort_if_not(x >= 1. && x <= 1e10) [L63] CALL, EXPR sqrt_custom(x) [L31] union u x; [L32] double r; [L33] int exp; [L35] x.d = a [L37] EXPR x.i[0] [L37] exp = (x.i[0] & 0x7FF00000) >> 20 [L38] EXPR x.i[0] [L38] x.i[0] = (x.i[0] & 0x800FFFFF) | 0x3FF00000 [L39] EXPR x.d [L39] r = x.d * 0.5 [L41] r = C1+C2+(C3+(C4+C5*r)*r)*r VAL [\old(a)=4294967300, a=4294967300, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=0, x={4:0}] [L43] COND TRUE exp % 2 == 0 [L44] exp++ VAL [\old(a)=4294967300, a=4294967300, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=1, x={4:0}] [L50] x.i[0] = (exp/2 + 511) << 20 [L51] EXPR x.d [L51] r = r * x.d [L53] return r; [L53] return r; VAL [\old(a)=4294967300, \result=4294967297, a=4294967300, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=1, r=4294967297] [L63] RET, EXPR sqrt_custom(x) [L63] y = sqrt_custom(x) [L65] CALL __VERIFIER_assert(y >= 0. && y <= 1e6) [L14] COND TRUE !(cond) VAL [\old(cond)=0, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, cond=0] [L14] reach_error() VAL [\old(cond)=0, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, 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, 14 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, 14 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-15 10:26:12,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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-benchs/sqrt_poly2.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 14164d07a16e34a605f7e42a9694dd7b1f0302594742e37b160cf821b53bc94e --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 10:26:14,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 10:26:14,048 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 10:26:14,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 10:26:14,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 10:26:14,076 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 10:26:14,078 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 10:26:14,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 10:26:14,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 10:26:14,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 10:26:14,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 10:26:14,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 10:26:14,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 10:26:14,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 10:26:14,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 10:26:14,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 10:26:14,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 10:26:14,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 10:26:14,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 10:26:14,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 10:26:14,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 10:26:14,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 10:26:14,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 10:26:14,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 10:26:14,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 10:26:14,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 10:26:14,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 10:26:14,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 10:26:14,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 10:26:14,120 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 10:26:14,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 10:26:14,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 10:26:14,121 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 10:26:14,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 10:26:14,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 10:26:14,123 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 10:26:14,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 10:26:14,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 10:26:14,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 10:26:14,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 10:26:14,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 10:26:14,126 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 10:26:14,150 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 10:26:14,150 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 10:26:14,151 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 10:26:14,151 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 10:26:14,152 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 10:26:14,152 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 10:26:14,152 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 10:26:14,153 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 10:26:14,153 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 10:26:14,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 10:26:14,154 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 10:26:14,154 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 10:26:14,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 10:26:14,154 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 10:26:14,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 10:26:14,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 10:26:14,154 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 10:26:14,155 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 10:26:14,155 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 10:26:14,155 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 10:26:14,155 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 10:26:14,155 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 10:26:14,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 10:26:14,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 10:26:14,156 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 10:26:14,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 10:26:14,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:26:14,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 10:26:14,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 10:26:14,156 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 10:26:14,156 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 10:26:14,157 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 10:26:14,157 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 10:26:14,157 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 10:26:14,157 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 10:26:14,157 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 10:26:14,157 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 10:26:14,158 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14164d07a16e34a605f7e42a9694dd7b1f0302594742e37b160cf821b53bc94e [2021-12-15 10:26:14,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 10:26:14,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 10:26:14,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 10:26:14,457 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 10:26:14,457 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 10:26:14,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/sqrt_poly2.c [2021-12-15 10:26:14,544 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f10cd3635/6fb7ed0f45744c039af639b90bca81fe/FLAG4f16a10b9 [2021-12-15 10:26:14,994 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 10:26:14,995 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_poly2.c [2021-12-15 10:26:14,999 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f10cd3635/6fb7ed0f45744c039af639b90bca81fe/FLAG4f16a10b9 [2021-12-15 10:26:15,016 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f10cd3635/6fb7ed0f45744c039af639b90bca81fe [2021-12-15 10:26:15,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 10:26:15,020 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 10:26:15,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 10:26:15,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 10:26:15,024 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 10:26:15,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:26:15" (1/1) ... [2021-12-15 10:26:15,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@93f7a4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:26:15, skipping insertion in model container [2021-12-15 10:26:15,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:26:15" (1/1) ... [2021-12-15 10:26:15,030 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 10:26:15,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 10:26:15,149 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-benchs/sqrt_poly2.c[587,600] [2021-12-15 10:26:15,176 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:26:15,187 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 10:26:15,199 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-benchs/sqrt_poly2.c[587,600] [2021-12-15 10:26:15,223 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:26:15,238 INFO L208 MainTranslator]: Completed translation [2021-12-15 10:26:15,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:26:15 WrapperNode [2021-12-15 10:26:15,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 10:26:15,240 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 10:26:15,240 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 10:26:15,240 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 10:26:15,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:26:15" (1/1) ... [2021-12-15 10:26:15,259 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:26:15" (1/1) ... [2021-12-15 10:26:15,278 INFO L137 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 67 [2021-12-15 10:26:15,279 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 10:26:15,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 10:26:15,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 10:26:15,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 10:26:15,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:26:15" (1/1) ... [2021-12-15 10:26:15,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:26:15" (1/1) ... [2021-12-15 10:26:15,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:26:15" (1/1) ... [2021-12-15 10:26:15,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:26:15" (1/1) ... [2021-12-15 10:26:15,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:26:15" (1/1) ... [2021-12-15 10:26:15,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:26:15" (1/1) ... [2021-12-15 10:26:15,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:26:15" (1/1) ... [2021-12-15 10:26:15,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 10:26:15,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 10:26:15,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 10:26:15,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 10:26:15,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:26:15" (1/1) ... [2021-12-15 10:26:15,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:26:15,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:26:15,385 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 10:26:15,409 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 10:26:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 10:26:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-12-15 10:26:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-12-15 10:26:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 10:26:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 10:26:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 10:26:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 10:26:15,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 10:26:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 10:26:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 10:26:15,496 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 10:26:15,498 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 10:26:18,896 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 10:26:18,900 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 10:26:18,901 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-15 10:26:18,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:26:18 BoogieIcfgContainer [2021-12-15 10:26:18,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 10:26:18,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 10:26:18,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 10:26:18,905 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 10:26:18,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:26:15" (1/3) ... [2021-12-15 10:26:18,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd4a40b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:26:18, skipping insertion in model container [2021-12-15 10:26:18,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:26:15" (2/3) ... [2021-12-15 10:26:18,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd4a40b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:26:18, skipping insertion in model container [2021-12-15 10:26:18,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:26:18" (3/3) ... [2021-12-15 10:26:18,907 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_poly2.c [2021-12-15 10:26:18,911 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 10:26:18,911 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 10:26:18,942 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 10:26:18,947 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 10:26:18,948 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 10:26:18,964 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:26:18,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-15 10:26:18,968 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:26:18,968 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:26:18,969 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:26:18,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:26:18,972 INFO L85 PathProgramCache]: Analyzing trace with hash -594069783, now seen corresponding path program 1 times [2021-12-15 10:26:18,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 10:26:18,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [976723701] [2021-12-15 10:26:18,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:26:18,981 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 10:26:18,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 10:26:18,983 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 10:26:18,984 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 10:26:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:26:19,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-15 10:26:19,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 10:26:20,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 10:26:20,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 10:26:20,019 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 10:26:20,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [976723701] [2021-12-15 10:26:20,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [976723701] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 10:26:20,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 10:26:20,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 10:26:20,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605723210] [2021-12-15 10:26:20,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 10:26:20,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 10:26:20,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 10:26:20,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 10:26:20,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 10:26:20,040 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:26:20,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:26:20,047 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2021-12-15 10:26:20,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 10:26:20,049 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-15 10:26:20,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:26:20,052 INFO L225 Difference]: With dead ends: 25 [2021-12-15 10:26:20,053 INFO L226 Difference]: Without dead ends: 10 [2021-12-15 10:26:20,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 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 10:26:20,056 INFO L933 BasicCegarLoop]: 14 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, 14 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 10:26:20,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 10:26:20,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-12-15 10:26:20,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-12-15 10:26:20,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:26:20,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-12-15 10:26:20,072 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 9 [2021-12-15 10:26:20,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:26:20,073 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-12-15 10:26:20,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:26:20,073 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-12-15 10:26:20,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-15 10:26:20,073 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:26:20,073 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:26:20,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-15 10:26:20,291 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 10:26:20,292 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:26:20,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:26:20,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1180937579, now seen corresponding path program 1 times [2021-12-15 10:26:20,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 10:26:20,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65218643] [2021-12-15 10:26:20,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:26:20,293 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 10:26:20,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 10:26:20,294 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 10:26:20,341 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 10:26:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 10:26:24,802 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 10:26:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 10:26:37,528 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-15 10:26:37,528 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-15 10:26:37,529 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-15 10:26:37,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-15 10:26:37,731 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 10:26:37,734 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-15 10:26:37,740 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-15 10:26:37,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 10:26:37 BoogieIcfgContainer [2021-12-15 10:26:37,767 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-15 10:26:37,767 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-15 10:26:37,767 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-15 10:26:37,767 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-15 10:26:37,768 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:26:18" (3/4) ... [2021-12-15 10:26:37,769 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-15 10:26:37,816 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-15 10:26:37,816 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-15 10:26:37,816 INFO L158 Benchmark]: Toolchain (without parser) took 22796.44ms. Allocated memory is still 62.9MB. Free memory was 43.7MB in the beginning and 25.4MB in the end (delta: 18.3MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. [2021-12-15 10:26:37,817 INFO L158 Benchmark]: CDTParser took 4.29ms. Allocated memory is still 62.9MB. Free memory was 44.2MB in the beginning and 44.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:26:37,817 INFO L158 Benchmark]: CACSL2BoogieTranslator took 218.82ms. Allocated memory is still 62.9MB. Free memory was 43.5MB in the beginning and 32.2MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 10:26:37,817 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.68ms. Allocated memory is still 62.9MB. Free memory was 32.2MB in the beginning and 30.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:26:37,817 INFO L158 Benchmark]: Boogie Preprocessor took 53.60ms. Allocated memory is still 62.9MB. Free memory was 30.4MB in the beginning and 46.4MB in the end (delta: -16.0MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2021-12-15 10:26:37,818 INFO L158 Benchmark]: RCFGBuilder took 3568.57ms. Allocated memory is still 62.9MB. Free memory was 46.4MB in the beginning and 35.7MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 10:26:37,818 INFO L158 Benchmark]: TraceAbstraction took 18863.62ms. Allocated memory is still 62.9MB. Free memory was 35.2MB in the beginning and 28.1MB in the end (delta: 7.1MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. [2021-12-15 10:26:37,818 INFO L158 Benchmark]: Witness Printer took 48.86ms. Allocated memory is still 62.9MB. Free memory was 27.8MB in the beginning and 25.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:26:37,819 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 4.29ms. Allocated memory is still 62.9MB. Free memory was 44.2MB in the beginning and 44.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 218.82ms. Allocated memory is still 62.9MB. Free memory was 43.5MB in the beginning and 32.2MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.68ms. Allocated memory is still 62.9MB. Free memory was 32.2MB in the beginning and 30.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.60ms. Allocated memory is still 62.9MB. Free memory was 30.4MB in the beginning and 46.4MB in the end (delta: -16.0MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * RCFGBuilder took 3568.57ms. Allocated memory is still 62.9MB. Free memory was 46.4MB in the beginning and 35.7MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 18863.62ms. Allocated memory is still 62.9MB. Free memory was 35.2MB in the beginning and 28.1MB in the end (delta: 7.1MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. * Witness Printer took 48.86ms. Allocated memory is still 62.9MB. Free memory was 27.8MB in the beginning and 25.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. 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 - CounterExampleResult [Line: 14]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] double C0 = 1.414213538; [L18] double C1 = 0.229761391; [L19] double C2 = 1.296735525; [L20] double C3 = -0.901098370; [L21] double C4 = 0.493553400; [L22] double C5 = -0.118958666; VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L58] double x,y; [L60] x = __VERIFIER_nondet_double() [L61] CALL assume_abort_if_not(x >= 1. && x <= 1e10) [L12] COND FALSE !(!cond) VAL [\old(cond)=1, C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666, cond=1] [L61] RET assume_abort_if_not(x >= 1. && x <= 1e10) [L63] CALL, EXPR sqrt_custom(x) [L31] union u x; [L32] double r; [L33] int exp; [L35] x.d = a [L37] EXPR x.i[0] [L37] exp = (x.i[0] & 0x7FF00000) >> 20 [L38] EXPR x.i[0] [L38] x.i[0] = (x.i[0] & 0x800FFFFF) | 0x3FF00000 [L39] EXPR x.d [L39] r = x.d * 0.5 [L41] r = C1+C2+(C3+(C4+C5*r)*r)*r VAL [\old(a)=66.62487504249125, a=66.62487504249125, C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666, exp=1854, r=-3878.37961516293, x={7:0}] [L43] COND TRUE exp % 2 == 0 [L44] exp++ VAL [\old(a)=66.62487504249125, a=66.62487504249125, C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666, exp=1855, r=-3878.37961516293, x={7:0}] [L50] x.i[0] = (exp/2 + 511) << 20 [L51] EXPR x.d [L51] r = r * x.d [L53] return r; [L53] return r; VAL [\old(a)=66.62487504249125, \result=-258396.4148131262, a=66.62487504249125, C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666, exp=1855, r=-258396.4148131262] [L63] RET, EXPR sqrt_custom(x) [L63] y = sqrt_custom(x) [L65] CALL __VERIFIER_assert(y >= 0. && y <= 1e6) [L14] COND TRUE !(cond) VAL [\old(cond)=0, C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666, cond=0] [L14] reach_error() VAL [\old(cond)=0, C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 18.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, 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, 14 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, 14 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 5.3s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 58 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-15 10:26:37,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE