./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_0460.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_0460.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 5bcd6030810972ce12a765944bf9ab96af2329d7a9986a8356400ad8ceca68d7 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-15 23:35:15,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 23:35:15,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 23:35:15,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 23:35:15,920 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 23:35:15,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 23:35:15,922 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 23:35:15,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 23:35:15,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 23:35:15,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 23:35:15,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 23:35:15,927 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 23:35:15,928 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 23:35:15,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 23:35:15,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 23:35:15,931 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 23:35:15,931 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 23:35:15,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 23:35:15,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 23:35:15,935 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 23:35:15,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 23:35:15,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 23:35:15,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 23:35:15,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 23:35:15,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 23:35:15,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 23:35:15,941 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 23:35:15,941 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 23:35:15,942 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 23:35:15,943 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 23:35:15,943 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 23:35:15,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 23:35:15,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 23:35:15,945 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 23:35:15,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 23:35:15,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 23:35:15,946 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 23:35:15,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 23:35:15,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 23:35:15,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 23:35:15,948 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 23:35:15,949 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 23:35:15,967 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 23:35:15,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 23:35:15,968 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 23:35:15,968 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 23:35:15,968 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 23:35:15,969 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 23:35:15,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 23:35:15,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 23:35:15,970 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 23:35:15,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 23:35:15,970 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 23:35:15,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 23:35:15,971 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 23:35:15,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 23:35:15,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 23:35:15,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 23:35:15,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 23:35:15,972 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 23:35:15,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 23:35:15,972 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 23:35:15,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 23:35:15,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 23:35:15,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 23:35:15,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 23:35:15,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:35:15,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 23:35:15,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 23:35:15,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 23:35:15,974 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 23:35:15,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 23:35:15,974 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 23:35:15,974 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 23:35:15,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 23:35:15,974 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 23:35:15,975 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bcd6030810972ce12a765944bf9ab96af2329d7a9986a8356400ad8ceca68d7 [2021-12-15 23:35:16,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 23:35:16,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 23:35:16,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 23:35:16,232 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 23:35:16,234 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 23:35:16,235 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0460.c [2021-12-15 23:35:16,293 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/522b5bdbf/bd9888a4cf584c0d9d5eec46733ae249/FLAGd6877b66b [2021-12-15 23:35:16,679 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 23:35:16,680 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0460.c [2021-12-15 23:35:16,686 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/522b5bdbf/bd9888a4cf584c0d9d5eec46733ae249/FLAGd6877b66b [2021-12-15 23:35:17,098 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/522b5bdbf/bd9888a4cf584c0d9d5eec46733ae249 [2021-12-15 23:35:17,103 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 23:35:17,104 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 23:35:17,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 23:35:17,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 23:35:17,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 23:35:17,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:35:17" (1/1) ... [2021-12-15 23:35:17,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e380b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:17, skipping insertion in model container [2021-12-15 23:35:17,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:35:17" (1/1) ... [2021-12-15 23:35:17,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 23:35:17,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 23:35:17,344 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0460.c[5763,5776] [2021-12-15 23:35:17,347 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:35:17,354 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 23:35:17,391 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0460.c[5763,5776] [2021-12-15 23:35:17,392 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:35:17,405 INFO L208 MainTranslator]: Completed translation [2021-12-15 23:35:17,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:17 WrapperNode [2021-12-15 23:35:17,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 23:35:17,407 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 23:35:17,407 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 23:35:17,407 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 23:35:17,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:17" (1/1) ... [2021-12-15 23:35:17,422 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:17" (1/1) ... [2021-12-15 23:35:17,442 INFO L137 Inliner]: procedures = 18, calls = 34, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 134 [2021-12-15 23:35:17,442 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 23:35:17,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 23:35:17,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 23:35:17,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 23:35:17,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:17" (1/1) ... [2021-12-15 23:35:17,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:17" (1/1) ... [2021-12-15 23:35:17,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:17" (1/1) ... [2021-12-15 23:35:17,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:17" (1/1) ... [2021-12-15 23:35:17,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:17" (1/1) ... [2021-12-15 23:35:17,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:17" (1/1) ... [2021-12-15 23:35:17,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:17" (1/1) ... [2021-12-15 23:35:17,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 23:35:17,506 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 23:35:17,506 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 23:35:17,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 23:35:17,509 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:17" (1/1) ... [2021-12-15 23:35:17,519 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:35:17,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:35:17,545 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 23:35:17,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 23:35:17,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 23:35:17,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 23:35:17,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 23:35:17,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-15 23:35:17,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 23:35:17,585 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2021-12-15 23:35:17,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2021-12-15 23:35:17,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-12-15 23:35:17,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 23:35:17,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 23:35:17,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 23:35:17,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 23:35:17,674 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 23:35:17,676 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 23:35:18,036 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 23:35:18,042 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 23:35:18,042 INFO L301 CfgBuilder]: Removed 14 assume(true) statements. [2021-12-15 23:35:18,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:35:18 BoogieIcfgContainer [2021-12-15 23:35:18,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 23:35:18,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 23:35:18,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 23:35:18,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 23:35:18,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:35:17" (1/3) ... [2021-12-15 23:35:18,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e34abf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:35:18, skipping insertion in model container [2021-12-15 23:35:18,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:17" (2/3) ... [2021-12-15 23:35:18,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e34abf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:35:18, skipping insertion in model container [2021-12-15 23:35:18,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:35:18" (3/3) ... [2021-12-15 23:35:18,055 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0460.c [2021-12-15 23:35:18,060 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 23:35:18,061 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 23:35:18,119 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 23:35:18,128 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 23:35:18,128 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 23:35:18,158 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 67 states have (on average 1.6417910447761195) internal successors, (110), 68 states have internal predecessors, (110), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-15 23:35:18,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-15 23:35:18,163 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:35:18,163 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:35:18,164 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:35:18,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:35:18,169 INFO L85 PathProgramCache]: Analyzing trace with hash 260887967, now seen corresponding path program 1 times [2021-12-15 23:35:18,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:35:18,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418399660] [2021-12-15 23:35:18,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:35:18,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:35:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:35:18,299 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 23:35:18,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:35:18,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418399660] [2021-12-15 23:35:18,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418399660] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:35:18,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:35:18,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 23:35:18,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083496921] [2021-12-15 23:35:18,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:35:18,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 23:35:18,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:35:18,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 23:35:18,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 23:35:18,330 INFO L87 Difference]: Start difference. First operand has 72 states, 67 states have (on average 1.6417910447761195) internal successors, (110), 68 states have internal predecessors, (110), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 23:35:18,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:35:18,354 INFO L93 Difference]: Finished difference Result 141 states and 226 transitions. [2021-12-15 23:35:18,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 23:35:18,356 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2021-12-15 23:35:18,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:35:18,364 INFO L225 Difference]: With dead ends: 141 [2021-12-15 23:35:18,365 INFO L226 Difference]: Without dead ends: 68 [2021-12-15 23:35:18,369 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 23:35:18,375 INFO L933 BasicCegarLoop]: 99 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, 99 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 23:35:18,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 23:35:18,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-12-15 23:35:18,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-12-15 23:35:18,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 64 states have (on average 1.40625) internal successors, (90), 64 states have internal predecessors, (90), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-15 23:35:18,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2021-12-15 23:35:18,415 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 12 [2021-12-15 23:35:18,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:35:18,416 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2021-12-15 23:35:18,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 23:35:18,416 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2021-12-15 23:35:18,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-15 23:35:18,417 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:35:18,417 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:35:18,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 23:35:18,417 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:35:18,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:35:18,418 INFO L85 PathProgramCache]: Analyzing trace with hash -843068167, now seen corresponding path program 1 times [2021-12-15 23:35:18,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:35:18,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79193202] [2021-12-15 23:35:18,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:35:18,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:35:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 23:35:18,473 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 23:35:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 23:35:18,536 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 23:35:18,536 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-15 23:35:18,537 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-15 23:35:18,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 23:35:18,542 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-15 23:35:18,544 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-15 23:35:18,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 11:35:18 BoogieIcfgContainer [2021-12-15 23:35:18,588 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-15 23:35:18,589 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-15 23:35:18,589 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-15 23:35:18,590 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-15 23:35:18,590 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:35:18" (3/4) ... [2021-12-15 23:35:18,593 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-15 23:35:18,593 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-15 23:35:18,594 INFO L158 Benchmark]: Toolchain (without parser) took 1489.44ms. Allocated memory is still 117.4MB. Free memory was 84.2MB in the beginning and 36.0MB in the end (delta: 48.2MB). Peak memory consumption was 45.6MB. Max. memory is 16.1GB. [2021-12-15 23:35:18,595 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 79.7MB. Free memory was 37.3MB in the beginning and 37.2MB in the end (delta: 37.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 23:35:18,596 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.45ms. Allocated memory is still 117.4MB. Free memory was 84.0MB in the beginning and 87.8MB in the end (delta: -3.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 23:35:18,599 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.84ms. Allocated memory is still 117.4MB. Free memory was 87.8MB in the beginning and 85.6MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 23:35:18,600 INFO L158 Benchmark]: Boogie Preprocessor took 62.52ms. Allocated memory is still 117.4MB. Free memory was 85.6MB in the beginning and 83.6MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 23:35:18,601 INFO L158 Benchmark]: RCFGBuilder took 537.68ms. Allocated memory is still 117.4MB. Free memory was 83.6MB in the beginning and 65.4MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-15 23:35:18,602 INFO L158 Benchmark]: TraceAbstraction took 543.04ms. Allocated memory is still 117.4MB. Free memory was 64.7MB in the beginning and 36.7MB in the end (delta: 28.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2021-12-15 23:35:18,602 INFO L158 Benchmark]: Witness Printer took 4.06ms. Allocated memory is still 117.4MB. Free memory is still 36.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 23:35:18,608 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 79.7MB. Free memory was 37.3MB in the beginning and 37.2MB in the end (delta: 37.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 299.45ms. Allocated memory is still 117.4MB. Free memory was 84.0MB in the beginning and 87.8MB in the end (delta: -3.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.84ms. Allocated memory is still 117.4MB. Free memory was 87.8MB in the beginning and 85.6MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 62.52ms. Allocated memory is still 117.4MB. Free memory was 85.6MB in the beginning and 83.6MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 537.68ms. Allocated memory is still 117.4MB. Free memory was 83.6MB in the beginning and 65.4MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 543.04ms. Allocated memory is still 117.4MB. Free memory was 64.7MB in the beginning and 36.7MB in the end (delta: 28.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 4.06ms. Allocated memory is still 117.4MB. Free memory is still 36.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 231]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 134, overapproximation of bitwiseAnd at line 152, overapproximation of someBinaryArithmeticDOUBLEoperation at line 170, overapproximation of someBinaryDOUBLEComparisonOperation at line 215. Possible FailurePath: [L17] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L129-L142] static const double one_acos = 1.00000000000000000000e+00, pi = 3.14159265358979311600e+00, pio2_hi_acos = 1.57079632679489655800e+00, pio2_lo_acos = 6.12323399573676603587e-17, pS0_acos = 1.66666666666666657415e-01, pS1_acos = -3.25565818622400915405e-01, pS2_acos = 2.01212532134862925881e-01, pS3_acos = -4.00555345006794114027e-02, pS4_acos = 7.91534994289814532176e-04, pS5_acos = 3.47933107596021167570e-05, qS1_acos = -2.40339491173441421878e+00, qS2_acos = 2.02094576023350569471e+00, qS3_acos = -6.88283971605453293030e-01, qS4_acos = 7.70381505559019352791e-02; VAL [one_acos=1, one_sqrt=1, pi=785398163397448279/500000000000000000, pi=612323399573676603587/10000000000000000000000000000000000000, pi=785398163397448279/250000000000000000, pS0_acos=33333333333333331483/200000000000000000000, pS2_acos=201212532134862925881/1000000000000000000000, pS4_acos=49470937143113408261/62500000000000000000000, pS5_acos=34793310759602116757/1000000000000000000000000, qS2_acos=202094576023350569471/100000000000000000000, qS4_acos=770381505559019352791/10000000000000000000000, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L223] double x = __VERIFIER_nondet_double(); [L225] COND TRUE x < -1.0 || x > 1.0 [L227] CALL, EXPR __ieee754_acos(x) [L145] double z, p, q, r, w, s, c, df; [L146] __int32_t hx, ix; VAL [\old(x)=49, one_acos=1, one_sqrt=1, pi=785398163397448279/500000000000000000, pi=612323399573676603587/10000000000000000000000000000000000000, pi=785398163397448279/250000000000000000, pS0_acos=33333333333333331483/200000000000000000000, pS2_acos=201212532134862925881/1000000000000000000000, pS4_acos=49470937143113408261/62500000000000000000000, pS5_acos=34793310759602116757/1000000000000000000000000, qS2_acos=202094576023350569471/100000000000000000000, qS4_acos=770381505559019352791/10000000000000000000000, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=49] [L148] ieee_double_shape_type gh_u; [L149] gh_u.value = (x) [L150] EXPR gh_u.parts.msw [L150] (hx) = gh_u.parts.msw [L152] ix = hx & 0x7fffffff VAL [\old(x)=49, hx=0, one_acos=1, one_sqrt=1, pi=612323399573676603587/10000000000000000000000000000000000000, pi=785398163397448279/500000000000000000, pi=785398163397448279/250000000000000000, pS0_acos=33333333333333331483/200000000000000000000, pS2_acos=201212532134862925881/1000000000000000000000, pS4_acos=49470937143113408261/62500000000000000000000, pS5_acos=34793310759602116757/1000000000000000000000000, qS2_acos=202094576023350569471/100000000000000000000, qS4_acos=770381505559019352791/10000000000000000000000, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=49] [L153] COND FALSE !(ix >= 0x3ff00000) VAL [\old(x)=49, hx=0, ix=0, one_acos=1, one_sqrt=1, pi=612323399573676603587/10000000000000000000000000000000000000, pi=785398163397448279/500000000000000000, pi=785398163397448279/250000000000000000, pS0_acos=33333333333333331483/200000000000000000000, pS2_acos=201212532134862925881/1000000000000000000000, pS4_acos=49470937143113408261/62500000000000000000000, pS5_acos=34793310759602116757/1000000000000000000000000, qS2_acos=202094576023350569471/100000000000000000000, qS4_acos=770381505559019352791/10000000000000000000000, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=49] [L168] COND TRUE ix < 0x3fe00000 VAL [\old(x)=49, hx=0, ix=0, one_acos=1, one_sqrt=1, pi=785398163397448279/250000000000000000, pi=785398163397448279/500000000000000000, pi=612323399573676603587/10000000000000000000000000000000000000, pS0_acos=33333333333333331483/200000000000000000000, pS2_acos=201212532134862925881/1000000000000000000000, pS4_acos=49470937143113408261/62500000000000000000000, pS5_acos=34793310759602116757/1000000000000000000000000, qS2_acos=202094576023350569471/100000000000000000000, qS4_acos=770381505559019352791/10000000000000000000000, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=49] [L169] COND TRUE ix <= 0x3c600000 [L170] return pio2_hi_acos + pio2_lo_acos; VAL [\old(x)=49, hx=0, ix=0, one_acos=1, one_sqrt=1, pi=785398163397448279/500000000000000000, pi=612323399573676603587/10000000000000000000000000000000000000, pi=785398163397448279/250000000000000000, pS0_acos=33333333333333331483/200000000000000000000, pS2_acos=201212532134862925881/1000000000000000000000, pS4_acos=49470937143113408261/62500000000000000000000, pS5_acos=34793310759602116757/1000000000000000000000000, qS2_acos=202094576023350569471/100000000000000000000, qS4_acos=770381505559019352791/10000000000000000000000, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=49] [L227] RET, EXPR __ieee754_acos(x) [L227] double res = __ieee754_acos(x); [L230] CALL, EXPR isnan_double(res) [L215] return x != x; VAL [\old(x)=51, \result=0, one_acos=1, one_sqrt=1, pi=785398163397448279/250000000000000000, pi=612323399573676603587/10000000000000000000000000000000000000, pi=785398163397448279/500000000000000000, pS0_acos=33333333333333331483/200000000000000000000, pS2_acos=201212532134862925881/1000000000000000000000, pS4_acos=49470937143113408261/62500000000000000000000, pS5_acos=34793310759602116757/1000000000000000000000000, qS2_acos=202094576023350569471/100000000000000000000, qS4_acos=770381505559019352791/10000000000000000000000, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=51] [L230] RET, EXPR isnan_double(res) [L230] COND TRUE !isnan_double(res) [L231] reach_error() VAL [one_acos=1, one_sqrt=1, pi=785398163397448279/250000000000000000, pi=612323399573676603587/10000000000000000000000000000000000000, pi=785398163397448279/500000000000000000, pS0_acos=33333333333333331483/200000000000000000000, pS2_acos=201212532134862925881/1000000000000000000000, pS4_acos=49470937143113408261/62500000000000000000000, pS5_acos=34793310759602116757/1000000000000000000000000, qS2_acos=202094576023350569471/100000000000000000000, qS4_acos=770381505559019352791/10000000000000000000000, res=51, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=49] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, 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, 99 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, 99 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=72occurred 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, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 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 23:35:18,649 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-newlib/double_req_bl_0460.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 5bcd6030810972ce12a765944bf9ab96af2329d7a9986a8356400ad8ceca68d7 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-15 23:35:20,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 23:35:20,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 23:35:20,717 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 23:35:20,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 23:35:20,722 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 23:35:20,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 23:35:20,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 23:35:20,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 23:35:20,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 23:35:20,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 23:35:20,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 23:35:20,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 23:35:20,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 23:35:20,744 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 23:35:20,748 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 23:35:20,749 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 23:35:20,750 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 23:35:20,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 23:35:20,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 23:35:20,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 23:35:20,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 23:35:20,762 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 23:35:20,764 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 23:35:20,768 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 23:35:20,768 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 23:35:20,768 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 23:35:20,770 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 23:35:20,770 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 23:35:20,771 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 23:35:20,772 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 23:35:20,772 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 23:35:20,774 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 23:35:20,775 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 23:35:20,776 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 23:35:20,776 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 23:35:20,777 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 23:35:20,777 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 23:35:20,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 23:35:20,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 23:35:20,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 23:35:20,780 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 23:35:20,814 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 23:35:20,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 23:35:20,816 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 23:35:20,816 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 23:35:20,817 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 23:35:20,817 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 23:35:20,819 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 23:35:20,819 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 23:35:20,819 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 23:35:20,819 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 23:35:20,820 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 23:35:20,820 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 23:35:20,820 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 23:35:20,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 23:35:20,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 23:35:20,821 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 23:35:20,821 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 23:35:20,821 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 23:35:20,821 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 23:35:20,822 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 23:35:20,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 23:35:20,822 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 23:35:20,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 23:35:20,823 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 23:35:20,823 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 23:35:20,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 23:35:20,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:35:20,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 23:35:20,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 23:35:20,824 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 23:35:20,824 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 23:35:20,824 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 23:35:20,825 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 23:35:20,825 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 23:35:20,825 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 23:35:20,825 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 23:35:20,825 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 23:35:20,826 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bcd6030810972ce12a765944bf9ab96af2329d7a9986a8356400ad8ceca68d7 [2021-12-15 23:35:21,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 23:35:21,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 23:35:21,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 23:35:21,143 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 23:35:21,144 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 23:35:21,146 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0460.c [2021-12-15 23:35:21,208 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df788ae5f/9ce8d759823544e7b34db5051cf7d0f5/FLAGd98c7d9e8 [2021-12-15 23:35:21,720 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 23:35:21,721 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0460.c [2021-12-15 23:35:21,728 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df788ae5f/9ce8d759823544e7b34db5051cf7d0f5/FLAGd98c7d9e8 [2021-12-15 23:35:22,180 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df788ae5f/9ce8d759823544e7b34db5051cf7d0f5 [2021-12-15 23:35:22,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 23:35:22,187 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 23:35:22,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 23:35:22,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 23:35:22,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 23:35:22,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:35:22" (1/1) ... [2021-12-15 23:35:22,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e5a1fb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:22, skipping insertion in model container [2021-12-15 23:35:22,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:35:22" (1/1) ... [2021-12-15 23:35:22,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 23:35:22,237 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 23:35:22,434 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0460.c[5763,5776] [2021-12-15 23:35:22,437 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:35:22,448 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 23:35:22,488 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0460.c[5763,5776] [2021-12-15 23:35:22,488 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:35:22,503 INFO L208 MainTranslator]: Completed translation [2021-12-15 23:35:22,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:22 WrapperNode [2021-12-15 23:35:22,504 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 23:35:22,505 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 23:35:22,506 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 23:35:22,506 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 23:35:22,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:22" (1/1) ... [2021-12-15 23:35:22,524 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:22" (1/1) ... [2021-12-15 23:35:22,546 INFO L137 Inliner]: procedures = 21, calls = 34, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 134 [2021-12-15 23:35:22,547 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 23:35:22,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 23:35:22,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 23:35:22,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 23:35:22,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:22" (1/1) ... [2021-12-15 23:35:22,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:22" (1/1) ... [2021-12-15 23:35:22,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:22" (1/1) ... [2021-12-15 23:35:22,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:22" (1/1) ... [2021-12-15 23:35:22,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:22" (1/1) ... [2021-12-15 23:35:22,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:22" (1/1) ... [2021-12-15 23:35:22,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:22" (1/1) ... [2021-12-15 23:35:22,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 23:35:22,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 23:35:22,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 23:35:22,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 23:35:22,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:22" (1/1) ... [2021-12-15 23:35:22,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:35:22,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:35:22,640 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 23:35:22,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 23:35:22,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 23:35:22,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-12-15 23:35:22,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-12-15 23:35:22,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 23:35:22,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 23:35:22,680 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2021-12-15 23:35:22,680 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2021-12-15 23:35:22,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 23:35:22,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 23:35:22,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 23:35:22,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 23:35:22,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 23:35:22,797 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 23:35:22,799 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 23:35:41,095 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 23:35:41,101 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 23:35:41,101 INFO L301 CfgBuilder]: Removed 14 assume(true) statements. [2021-12-15 23:35:41,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:35:41 BoogieIcfgContainer [2021-12-15 23:35:41,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 23:35:41,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 23:35:41,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 23:35:41,107 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 23:35:41,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:35:22" (1/3) ... [2021-12-15 23:35:41,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@732a4b89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:35:41, skipping insertion in model container [2021-12-15 23:35:41,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:22" (2/3) ... [2021-12-15 23:35:41,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@732a4b89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:35:41, skipping insertion in model container [2021-12-15 23:35:41,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:35:41" (3/3) ... [2021-12-15 23:35:41,110 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0460.c [2021-12-15 23:35:41,114 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 23:35:41,114 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 23:35:41,148 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 23:35:41,154 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 23:35:41,154 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 23:35:41,171 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 67 states have (on average 1.6417910447761195) internal successors, (110), 68 states have internal predecessors, (110), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-15 23:35:41,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-15 23:35:41,175 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:35:41,175 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:35:41,176 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:35:41,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:35:41,180 INFO L85 PathProgramCache]: Analyzing trace with hash 260887967, now seen corresponding path program 1 times [2021-12-15 23:35:41,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 23:35:41,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [979497181] [2021-12-15 23:35:41,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:35:41,190 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 23:35:41,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 23:35:41,193 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 23:35:41,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 23:35:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:35:41,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-15 23:35:41,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:35:42,295 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 23:35:42,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 23:35:42,296 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 23:35:42,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [979497181] [2021-12-15 23:35:42,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [979497181] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:35:42,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:35:42,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 23:35:42,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402390155] [2021-12-15 23:35:42,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:35:42,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 23:35:42,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 23:35:42,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 23:35:42,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 23:35:42,331 INFO L87 Difference]: Start difference. First operand has 72 states, 67 states have (on average 1.6417910447761195) internal successors, (110), 68 states have internal predecessors, (110), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 23:35:42,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:35:42,358 INFO L93 Difference]: Finished difference Result 141 states and 226 transitions. [2021-12-15 23:35:42,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 23:35:42,360 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2021-12-15 23:35:42,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:35:42,367 INFO L225 Difference]: With dead ends: 141 [2021-12-15 23:35:42,368 INFO L226 Difference]: Without dead ends: 68 [2021-12-15 23:35:42,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 23:35:42,375 INFO L933 BasicCegarLoop]: 99 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, 99 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 23:35:42,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 23:35:42,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-12-15 23:35:42,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-12-15 23:35:42,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 64 states have (on average 1.40625) internal successors, (90), 64 states have internal predecessors, (90), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-15 23:35:42,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2021-12-15 23:35:42,412 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 12 [2021-12-15 23:35:42,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:35:42,412 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2021-12-15 23:35:42,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 23:35:42,413 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2021-12-15 23:35:42,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-15 23:35:42,414 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:35:42,414 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:35:42,441 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 23:35:42,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 23:35:42,624 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:35:42,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:35:42,624 INFO L85 PathProgramCache]: Analyzing trace with hash -843068167, now seen corresponding path program 1 times [2021-12-15 23:35:42,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 23:35:42,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1470167948] [2021-12-15 23:35:42,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:35:42,626 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 23:35:42,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 23:35:42,629 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 23:35:42,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-15 23:35:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:35:42,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-15 23:35:42,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:35:48,729 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 23:35:48,729 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 23:35:48,729 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 23:35:48,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1470167948] [2021-12-15 23:35:48,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1470167948] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:35:48,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:35:48,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 23:35:48,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814797966] [2021-12-15 23:35:48,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:35:48,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 23:35:48,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 23:35:48,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 23:35:48,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 23:35:48,732 INFO L87 Difference]: Start difference. First operand 68 states and 94 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 23:35:48,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:35:48,746 INFO L93 Difference]: Finished difference Result 73 states and 98 transitions. [2021-12-15 23:35:48,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 23:35:48,747 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 13 [2021-12-15 23:35:48,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:35:48,749 INFO L225 Difference]: With dead ends: 73 [2021-12-15 23:35:48,749 INFO L226 Difference]: Without dead ends: 16 [2021-12-15 23:35:48,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 23:35:48,756 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 23:35:48,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 11 Unchecked, 0.0s Time] [2021-12-15 23:35:48,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-12-15 23:35:48,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-12-15 23:35:48,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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 23:35:48,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-12-15 23:35:48,765 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 13 [2021-12-15 23:35:48,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:35:48,765 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-12-15 23:35:48,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 23:35:48,766 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-12-15 23:35:48,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-15 23:35:48,767 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:35:48,767 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:35:48,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-15 23:35:48,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 23:35:48,982 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:35:48,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:35:48,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1156017025, now seen corresponding path program 1 times [2021-12-15 23:35:48,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 23:35:48,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104577407] [2021-12-15 23:35:48,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:35:48,984 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 23:35:48,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 23:35:48,985 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 23:35:49,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-15 23:35:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:35:49,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-15 23:35:49,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:35:56,193 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start___ieee754_acos_~x#1| (_ FloatingPoint 11 53))) (= |c_ULTIMATE.start___ieee754_acos_#res#1| (let ((.cse0 (fp.sub roundNearestTiesToEven |ULTIMATE.start___ieee754_acos_~x#1| |ULTIMATE.start___ieee754_acos_~x#1|))) (fp.div roundNearestTiesToEven .cse0 .cse0)))) is different from true [2021-12-15 23:36:12,057 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 23:36:12,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 23:36:12,058 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 23:36:12,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104577407] [2021-12-15 23:36:12,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1104577407] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:36:12,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:36:12,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 23:36:12,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681096201] [2021-12-15 23:36:12,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:36:12,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 23:36:12,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 23:36:12,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 23:36:12,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=13, Unknown=2, NotChecked=6, Total=30 [2021-12-15 23:36:12,060 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 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 23:36:14,843 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.60s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-15 23:36:16,118 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-15 23:36:16,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:36:16,991 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-12-15 23:36:16,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-15 23:36:16,991 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2021-12-15 23:36:16,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:36:16,992 INFO L225 Difference]: With dead ends: 21 [2021-12-15 23:36:16,992 INFO L226 Difference]: Without dead ends: 16 [2021-12-15 23:36:16,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=13, Invalid=19, Unknown=2, NotChecked=8, Total=42 [2021-12-15 23:36:16,993 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-12-15 23:36:16,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 37 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 1 Unknown, 18 Unchecked, 4.5s Time] [2021-12-15 23:36:16,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-12-15 23:36:16,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-12-15 23:36:16,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 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 23:36:16,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-12-15 23:36:16,995 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2021-12-15 23:36:16,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:36:16,996 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-12-15 23:36:16,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 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 23:36:16,996 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-12-15 23:36:16,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-15 23:36:16,997 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:36:16,997 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:36:17,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-15 23:36:17,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 23:36:17,204 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:36:17,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:36:17,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1239382277, now seen corresponding path program 1 times [2021-12-15 23:36:17,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 23:36:17,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2132915595] [2021-12-15 23:36:17,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:36:17,205 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 23:36:17,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 23:36:17,206 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 23:36:17,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-15 23:36:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:36:17,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-15 23:36:17,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:36:18,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 16 [2021-12-15 23:36:23,699 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:36:23,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-12-15 23:36:24,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10