./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.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 3d80131755697383884f625dd9587f1c200aa06d2b7c943b2856d52f75da1766 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 13:14:38,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 13:14:38,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 13:14:39,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 13:14:39,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 13:14:39,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 13:14:39,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 13:14:39,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 13:14:39,041 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 13:14:39,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 13:14:39,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 13:14:39,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 13:14:39,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 13:14:39,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 13:14:39,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 13:14:39,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 13:14:39,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 13:14:39,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 13:14:39,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 13:14:39,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 13:14:39,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 13:14:39,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 13:14:39,063 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 13:14:39,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 13:14:39,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 13:14:39,074 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 13:14:39,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 13:14:39,076 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 13:14:39,076 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 13:14:39,076 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 13:14:39,077 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 13:14:39,078 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 13:14:39,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 13:14:39,079 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 13:14:39,080 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 13:14:39,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 13:14:39,082 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 13:14:39,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 13:14:39,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 13:14:39,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 13:14:39,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 13:14:39,085 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 13:14:39,115 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 13:14:39,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 13:14:39,116 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 13:14:39,116 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 13:14:39,117 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 13:14:39,117 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 13:14:39,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 13:14:39,118 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 13:14:39,118 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 13:14:39,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 13:14:39,119 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 13:14:39,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 13:14:39,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 13:14:39,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 13:14:39,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 13:14:39,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 13:14:39,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 13:14:39,120 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 13:14:39,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 13:14:39,121 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 13:14:39,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 13:14:39,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 13:14:39,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 13:14:39,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 13:14:39,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 13:14:39,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 13:14:39,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 13:14:39,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 13:14:39,122 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 13:14:39,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 13:14:39,122 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 13:14:39,122 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 13:14:39,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 13:14:39,123 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 13:14:39,123 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d80131755697383884f625dd9587f1c200aa06d2b7c943b2856d52f75da1766 [2021-12-14 13:14:39,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 13:14:39,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 13:14:39,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 13:14:39,410 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 13:14:39,411 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 13:14:39,412 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c [2021-12-14 13:14:39,491 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/936fcce63/68d0f8e721284cc69d616c0294a415a7/FLAGe5efc1302 [2021-12-14 13:14:40,057 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 13:14:40,058 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c [2021-12-14 13:14:40,067 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/936fcce63/68d0f8e721284cc69d616c0294a415a7/FLAGe5efc1302 [2021-12-14 13:14:40,518 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/936fcce63/68d0f8e721284cc69d616c0294a415a7 [2021-12-14 13:14:40,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 13:14:40,531 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 13:14:40,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 13:14:40,548 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 13:14:40,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 13:14:40,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:14:40" (1/1) ... [2021-12-14 13:14:40,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50794196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:14:40, skipping insertion in model container [2021-12-14 13:14:40,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:14:40" (1/1) ... [2021-12-14 13:14:40,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 13:14:40,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 13:14:40,717 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c[1479,1492] [2021-12-14 13:14:40,721 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 13:14:40,727 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 13:14:40,753 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c[1479,1492] [2021-12-14 13:14:40,761 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 13:14:40,770 INFO L208 MainTranslator]: Completed translation [2021-12-14 13:14:40,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:14:40 WrapperNode [2021-12-14 13:14:40,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 13:14:40,784 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 13:14:40,785 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 13:14:40,785 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 13:14:40,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:14:40" (1/1) ... [2021-12-14 13:14:40,809 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:14:40" (1/1) ... [2021-12-14 13:14:40,840 INFO L137 Inliner]: procedures = 18, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 70 [2021-12-14 13:14:40,841 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 13:14:40,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 13:14:40,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 13:14:40,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 13:14:40,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:14:40" (1/1) ... [2021-12-14 13:14:40,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:14:40" (1/1) ... [2021-12-14 13:14:40,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:14:40" (1/1) ... [2021-12-14 13:14:40,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:14:40" (1/1) ... [2021-12-14 13:14:40,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:14:40" (1/1) ... [2021-12-14 13:14:40,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:14:40" (1/1) ... [2021-12-14 13:14:40,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:14:40" (1/1) ... [2021-12-14 13:14:40,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 13:14:40,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 13:14:40,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 13:14:40,877 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 13:14:40,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:14:40" (1/1) ... [2021-12-14 13:14:40,882 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 13:14:40,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 13:14:40,916 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) [2021-12-14 13:14:40,919 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 [2021-12-14 13:14:40,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 13:14:40,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 13:14:40,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 13:14:40,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-14 13:14:40,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 13:14:40,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-12-14 13:14:40,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 13:14:40,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 13:14:40,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 13:14:40,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 13:14:41,013 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 13:14:41,023 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 13:14:41,157 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 13:14:41,161 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 13:14:41,161 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 13:14:41,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:14:41 BoogieIcfgContainer [2021-12-14 13:14:41,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 13:14:41,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 13:14:41,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 13:14:41,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 13:14:41,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:14:40" (1/3) ... [2021-12-14 13:14:41,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b062efc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:14:41, skipping insertion in model container [2021-12-14 13:14:41,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:14:40" (2/3) ... [2021-12-14 13:14:41,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b062efc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:14:41, skipping insertion in model container [2021-12-14 13:14:41,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:14:41" (3/3) ... [2021-12-14 13:14:41,171 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_sqrt_Quake.c.v+cfa-reducer.c [2021-12-14 13:14:41,174 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 13:14:41,174 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 13:14:41,200 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 13:14:41,205 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 [2021-12-14 13:14:41,205 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 13:14:41,213 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 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) [2021-12-14 13:14:41,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-14 13:14:41,215 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:14:41,216 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:14:41,216 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:14:41,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:14:41,223 INFO L85 PathProgramCache]: Analyzing trace with hash -2137295023, now seen corresponding path program 1 times [2021-12-14 13:14:41,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:14:41,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006151363] [2021-12-14 13:14:41,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:14:41,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:14:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 13:14:41,291 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 13:14:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 13:14:41,313 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 13:14:41,315 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-14 13:14:41,315 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-14 13:14:41,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 13:14:41,319 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-12-14 13:14:41,321 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 13:14:41,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 01:14:41 BoogieIcfgContainer [2021-12-14 13:14:41,337 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 13:14:41,337 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 13:14:41,337 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 13:14:41,338 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 13:14:41,338 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:14:41" (3/4) ... [2021-12-14 13:14:41,340 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-14 13:14:41,340 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 13:14:41,340 INFO L158 Benchmark]: Toolchain (without parser) took 809.88ms. Allocated memory is still 94.4MB. Free memory was 71.4MB in the beginning and 33.8MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2021-12-14 13:14:41,341 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 77.6MB. Free memory was 48.5MB in the beginning and 48.5MB in the end (delta: 42.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 13:14:41,341 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.85ms. Allocated memory is still 94.4MB. Free memory was 71.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-14 13:14:41,342 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.29ms. Allocated memory is still 94.4MB. Free memory was 60.8MB in the beginning and 59.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 13:14:41,342 INFO L158 Benchmark]: Boogie Preprocessor took 34.31ms. Allocated memory is still 94.4MB. Free memory was 59.2MB in the beginning and 58.2MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 13:14:41,342 INFO L158 Benchmark]: RCFGBuilder took 286.22ms. Allocated memory is still 94.4MB. Free memory was 58.2MB in the beginning and 48.5MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 13:14:41,343 INFO L158 Benchmark]: TraceAbstraction took 173.00ms. Allocated memory is still 94.4MB. Free memory was 48.1MB in the beginning and 34.1MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-14 13:14:41,343 INFO L158 Benchmark]: Witness Printer took 2.59ms. Allocated memory is still 94.4MB. Free memory was 34.1MB in the beginning and 33.8MB in the end (delta: 373.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 13:14:41,345 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 77.6MB. Free memory was 48.5MB in the beginning and 48.5MB in the end (delta: 42.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 235.85ms. Allocated memory is still 94.4MB. Free memory was 71.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.29ms. Allocated memory is still 94.4MB. Free memory was 60.8MB in the beginning and 59.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.31ms. Allocated memory is still 94.4MB. Free memory was 59.2MB in the beginning and 58.2MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 286.22ms. Allocated memory is still 94.4MB. Free memory was 58.2MB in the beginning and 48.5MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 173.00ms. Allocated memory is still 94.4MB. Free memory was 48.1MB in the beginning and 34.1MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 2.59ms. Allocated memory is still 94.4MB. Free memory was 34.1MB in the beginning and 33.8MB in the end (delta: 373.8kB). 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: 59]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 46, overapproximation of someBinaryArithmeticDOUBLEoperation at line 37. Possible FailurePath: [L1] int __return_main; [L17] float __return_72; [L18] int __return_87; VAL [__return_72=0, __return_87=0, __return_main=0] [L21] float main__a; [L22] float main__r; [L23] main__a = __VERIFIER_nondet_float() [L24] int main____CPAchecker_TMP_0; VAL [__return_72=0, __return_87=0, __return_main=0] [L25] COND TRUE main__a >= 0.10000000149011612 VAL [__return_72=0, __return_87=0, __return_main=0] [L27] COND TRUE main__a <= 100.0 [L29] main____CPAchecker_TMP_0 = 1 VAL [__return_72=0, __return_87=0, __return_main=0, main____CPAchecker_TMP_0=1] [L30] COND TRUE main____CPAchecker_TMP_0 != 0 [L33] float __tmp_1; [L34] __tmp_1 = main__a [L35] float InvSqrt__x; [L36] InvSqrt__x = __tmp_1 [L37] float InvSqrt__xhalf = 0.5 * InvSqrt__x; [L38] union float_int InvSqrt__i; [L39] InvSqrt__i.f = InvSqrt__x [L40] EXPR InvSqrt__i.i [L40] InvSqrt__i.i = 1597463007 - ((InvSqrt__i.i) >> 1) [L41] EXPR InvSqrt__i.f [L41] InvSqrt__x = InvSqrt__i.f [L42] InvSqrt__x = InvSqrt__x * (1.5 - ((InvSqrt__xhalf * InvSqrt__x) * InvSqrt__x)) [L43] __return_72 = InvSqrt__x [L44] main__r = __return_72 [L45] int main____CPAchecker_TMP_1; VAL [__return_72=1597463009, __return_87=0, __return_main=0, __tmp_1=1597463008, InvSqrt__i={5:0}, InvSqrt__x=1597463009, main____CPAchecker_TMP_0=1, main__a=1597463008, main__r=1597463009] [L46] COND FALSE !(main__r >= 0.0) VAL [__return_72=1597463009, __return_87=0, __return_main=0, __tmp_1=1597463008, InvSqrt__i={5:0}, InvSqrt__x=1597463009, main____CPAchecker_TMP_0=1, main__a=1597463008, main__r=1597463009] [L72] main____CPAchecker_TMP_1 = 0 VAL [__return_72=1597463009, __return_87=0, __return_main=0, __tmp_1=1597463008, InvSqrt__i={5:0}, InvSqrt__x=1597463009, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__a=1597463008, main__r=1597463009] [L53] int __tmp_2; [L54] __tmp_2 = main____CPAchecker_TMP_1 [L55] int __VERIFIER_assert__cond; [L56] __VERIFIER_assert__cond = __tmp_2 VAL [__return_72=1597463009, __return_87=0, __return_main=0, __tmp_1=1597463008, __tmp_2=0, __VERIFIER_assert__cond=0, InvSqrt__i={5:0}, InvSqrt__x=1597463009, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__a=1597463008, main__r=1597463009] [L57] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_72=1597463009, __return_87=0, __return_main=0, __tmp_1=1597463008, __tmp_2=0, __VERIFIER_assert__cond=0, InvSqrt__i={5:0}, InvSqrt__x=1597463009, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__a=1597463008, main__r=1597463009] [L59] reach_error() VAL [__return_72=1597463009, __return_87=0, __return_main=0, __tmp_1=1597463008, __tmp_2=0, __VERIFIER_assert__cond=0, InvSqrt__i={5:0}, InvSqrt__x=1597463009, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__a=1597463008, main__r=1597463009] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-14 13:14:41,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.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 3d80131755697383884f625dd9587f1c200aa06d2b7c943b2856d52f75da1766 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 13:14:43,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 13:14:43,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 13:14:43,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 13:14:43,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 13:14:43,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 13:14:43,414 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 13:14:43,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 13:14:43,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 13:14:43,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 13:14:43,424 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 13:14:43,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 13:14:43,428 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 13:14:43,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 13:14:43,431 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 13:14:43,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 13:14:43,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 13:14:43,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 13:14:43,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 13:14:43,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 13:14:43,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 13:14:43,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 13:14:43,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 13:14:43,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 13:14:43,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 13:14:43,470 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 13:14:43,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 13:14:43,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 13:14:43,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 13:14:43,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 13:14:43,472 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 13:14:43,473 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 13:14:43,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 13:14:43,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 13:14:43,475 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 13:14:43,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 13:14:43,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 13:14:43,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 13:14:43,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 13:14:43,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 13:14:43,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 13:14:43,479 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-14 13:14:43,538 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 13:14:43,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 13:14:43,540 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 13:14:43,540 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 13:14:43,541 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 13:14:43,541 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 13:14:43,542 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 13:14:43,542 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 13:14:43,543 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 13:14:43,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 13:14:43,554 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 13:14:43,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 13:14:43,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 13:14:43,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 13:14:43,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 13:14:43,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 13:14:43,555 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-14 13:14:43,555 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-14 13:14:43,555 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-14 13:14:43,559 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 13:14:43,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 13:14:43,559 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 13:14:43,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 13:14:43,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 13:14:43,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 13:14:43,560 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 13:14:43,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 13:14:43,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 13:14:43,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 13:14:43,560 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 13:14:43,561 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-14 13:14:43,561 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-14 13:14:43,561 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 13:14:43,561 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 13:14:43,561 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 13:14:43,561 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 13:14:43,561 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-14 13:14:43,562 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d80131755697383884f625dd9587f1c200aa06d2b7c943b2856d52f75da1766 [2021-12-14 13:14:44,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 13:14:44,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 13:14:44,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 13:14:44,014 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 13:14:44,035 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 13:14:44,036 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c [2021-12-14 13:14:44,079 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ebb58ed1/138dc0bc28194782a196cfec9c993770/FLAG086b724ef [2021-12-14 13:14:44,511 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 13:14:44,512 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c [2021-12-14 13:14:44,517 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ebb58ed1/138dc0bc28194782a196cfec9c993770/FLAG086b724ef [2021-12-14 13:14:44,531 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ebb58ed1/138dc0bc28194782a196cfec9c993770 [2021-12-14 13:14:44,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 13:14:44,536 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 13:14:44,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 13:14:44,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 13:14:44,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 13:14:44,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:14:44" (1/1) ... [2021-12-14 13:14:44,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e580493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:14:44, skipping insertion in model container [2021-12-14 13:14:44,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:14:44" (1/1) ... [2021-12-14 13:14:44,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 13:14:44,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 13:14:44,685 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c[1479,1492] [2021-12-14 13:14:44,689 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 13:14:44,699 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 13:14:44,758 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c[1479,1492] [2021-12-14 13:14:44,760 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 13:14:44,773 INFO L208 MainTranslator]: Completed translation [2021-12-14 13:14:44,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:14:44 WrapperNode [2021-12-14 13:14:44,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 13:14:44,774 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 13:14:44,774 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 13:14:44,775 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 13:14:44,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:14:44" (1/1) ... [2021-12-14 13:14:44,794 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:14:44" (1/1) ... [2021-12-14 13:14:44,811 INFO L137 Inliner]: procedures = 21, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 71 [2021-12-14 13:14:44,811 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 13:14:44,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 13:14:44,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 13:14:44,812 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 13:14:44,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:14:44" (1/1) ... [2021-12-14 13:14:44,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:14:44" (1/1) ... [2021-12-14 13:14:44,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:14:44" (1/1) ... [2021-12-14 13:14:44,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:14:44" (1/1) ... [2021-12-14 13:14:44,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:14:44" (1/1) ... [2021-12-14 13:14:44,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:14:44" (1/1) ... [2021-12-14 13:14:44,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:14:44" (1/1) ... [2021-12-14 13:14:44,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 13:14:44,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 13:14:44,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 13:14:44,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 13:14:44,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:14:44" (1/1) ... [2021-12-14 13:14:44,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 13:14:44,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 13:14:44,873 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) [2021-12-14 13:14:44,879 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 [2021-12-14 13:14:44,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 13:14:44,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-14 13:14:44,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 13:14:44,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-12-14 13:14:44,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-14 13:14:44,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 13:14:44,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 13:14:44,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-12-14 13:14:44,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 13:14:44,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-14 13:14:44,967 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 13:14:44,968 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 13:14:47,775 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 13:14:47,780 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 13:14:47,780 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 13:14:47,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:14:47 BoogieIcfgContainer [2021-12-14 13:14:47,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 13:14:47,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 13:14:47,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 13:14:47,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 13:14:47,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:14:44" (1/3) ... [2021-12-14 13:14:47,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ced0ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:14:47, skipping insertion in model container [2021-12-14 13:14:47,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:14:44" (2/3) ... [2021-12-14 13:14:47,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ced0ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:14:47, skipping insertion in model container [2021-12-14 13:14:47,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:14:47" (3/3) ... [2021-12-14 13:14:47,787 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_sqrt_Quake.c.v+cfa-reducer.c [2021-12-14 13:14:47,790 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 13:14:47,790 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 13:14:47,825 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 13:14:47,830 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 [2021-12-14 13:14:47,830 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 13:14:47,837 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 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) [2021-12-14 13:14:47,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-14 13:14:47,840 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:14:47,840 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:14:47,841 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:14:47,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:14:47,844 INFO L85 PathProgramCache]: Analyzing trace with hash -2137295023, now seen corresponding path program 1 times [2021-12-14 13:14:47,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 13:14:47,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510480945] [2021-12-14 13:14:47,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:14:47,852 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 13:14:47,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 13:14:47,853 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) [2021-12-14 13:14:47,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-14 13:14:49,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:14:49,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-14 13:14:49,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:15:06,889 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (exists ((|v_skolemized_q#valueAsBitvector_4| (_ BitVec 32))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_4|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_4|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_4|))))) (and (= |c_ULTIMATE.start_main_~main__r~0#1| ((_ to_fp 8 24) c_currentRoundingMode (let ((.cse0 (let ((.cse2 (bvadd (_ bv1597463007 32) (bvneg (bvashr |v_skolemized_q#valueAsBitvector_4| (_ bv1 32)))))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 3.0 2.0)) ((_ to_fp 11 53) c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) .cse1)) .cse0) .cse0))))))) (fp.leq .cse1 ((_ to_fp 11 53) c_currentRoundingMode 100.0)) (fp.geq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0))))))) is different from false [2021-12-14 13:15:24,479 WARN L838 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_4| (_ BitVec 32))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_4|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_4|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_4|))))) (and (fp.geq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 2500000037252903.0 25000000000000000.0))) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (let ((.cse1 (let ((.cse2 (bvadd (_ bv1597463007 32) (bvneg (bvashr |v_skolemized_q#valueAsBitvector_4| (_ bv1 32)))))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven .cse1) (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 3.0 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) .cse0)) .cse1) .cse1))))))) (_ +zero 11 53))) (fp.leq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 100.0))))) is different from false [2021-12-14 13:15:26,598 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_4| (_ BitVec 32))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_4|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_4|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_4|))))) (and (fp.geq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 2500000037252903.0 25000000000000000.0))) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (let ((.cse1 (let ((.cse2 (bvadd (_ bv1597463007 32) (bvneg (bvashr |v_skolemized_q#valueAsBitvector_4| (_ bv1 32)))))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven .cse1) (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 3.0 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) .cse0)) .cse1) .cse1))))))) (_ +zero 11 53))) (fp.leq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 100.0))))) is different from true