./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.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/combinations/square_8+soft_float_4-3a.c.cil.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 3a1b0d13ed57f2c287b7c5c279f90464e92ac535bf47194a470e4f6c38d6c07a --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 16:26:26,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 16:26:26,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 16:26:26,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 16:26:26,796 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 16:26:26,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 16:26:26,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 16:26:26,798 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 16:26:26,799 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 16:26:26,800 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 16:26:26,800 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 16:26:26,801 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 16:26:26,801 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 16:26:26,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 16:26:26,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 16:26:26,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 16:26:26,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 16:26:26,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 16:26:26,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 16:26:26,806 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 16:26:26,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 16:26:26,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 16:26:26,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 16:26:26,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 16:26:26,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 16:26:26,811 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 16:26:26,811 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 16:26:26,811 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 16:26:26,812 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 16:26:26,812 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 16:26:26,813 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 16:26:26,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 16:26:26,814 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 16:26:26,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 16:26:26,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 16:26:26,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 16:26:26,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 16:26:26,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 16:26:26,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 16:26:26,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 16:26:26,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 16:26:26,817 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 16:26:26,829 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 16:26:26,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 16:26:26,830 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 16:26:26,830 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 16:26:26,830 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 16:26:26,830 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 16:26:26,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 16:26:26,831 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 16:26:26,831 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 16:26:26,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 16:26:26,831 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 16:26:26,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 16:26:26,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 16:26:26,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 16:26:26,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 16:26:26,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 16:26:26,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 16:26:26,832 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 16:26:26,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 16:26:26,833 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 16:26:26,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 16:26:26,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 16:26:26,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 16:26:26,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 16:26:26,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:26:26,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 16:26:26,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 16:26:26,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 16:26:26,834 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 16:26:26,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 16:26:26,834 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 16:26:26,834 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 16:26:26,834 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 16:26:26,834 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 16:26:26,835 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a1b0d13ed57f2c287b7c5c279f90464e92ac535bf47194a470e4f6c38d6c07a [2021-12-14 16:26:26,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 16:26:26,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 16:26:26,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 16:26:26,982 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 16:26:26,982 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 16:26:26,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c [2021-12-14 16:26:27,030 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50a93b061/a035693192864c85a7f5372252dfc98d/FLAG1715a22f3 [2021-12-14 16:26:27,335 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 16:26:27,335 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c [2021-12-14 16:26:27,340 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50a93b061/a035693192864c85a7f5372252dfc98d/FLAG1715a22f3 [2021-12-14 16:26:27,348 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50a93b061/a035693192864c85a7f5372252dfc98d [2021-12-14 16:26:27,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 16:26:27,353 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 16:26:27,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 16:26:27,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 16:26:27,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 16:26:27,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:26:27" (1/1) ... [2021-12-14 16:26:27,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@780b4ab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:26:27, skipping insertion in model container [2021-12-14 16:26:27,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:26:27" (1/1) ... [2021-12-14 16:26:27,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 16:26:27,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 16:26:27,530 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/combinations/square_8+soft_float_4-3a.c.cil.c[1995,2008] [2021-12-14 16:26:27,548 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/combinations/square_8+soft_float_4-3a.c.cil.c[2364,2377] [2021-12-14 16:26:27,576 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:26:27,585 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 16:26:27,595 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/combinations/square_8+soft_float_4-3a.c.cil.c[1995,2008] [2021-12-14 16:26:27,596 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c[2364,2377] [2021-12-14 16:26:27,616 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:26:27,633 INFO L208 MainTranslator]: Completed translation [2021-12-14 16:26:27,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:26:27 WrapperNode [2021-12-14 16:26:27,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 16:26:27,634 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 16:26:27,635 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 16:26:27,635 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 16:26:27,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:26:27" (1/1) ... [2021-12-14 16:26:27,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:26:27" (1/1) ... [2021-12-14 16:26:27,656 INFO L137 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2021-12-14 16:26:27,656 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 16:26:27,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 16:26:27,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 16:26:27,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 16:26:27,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:26:27" (1/1) ... [2021-12-14 16:26:27,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:26:27" (1/1) ... [2021-12-14 16:26:27,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:26:27" (1/1) ... [2021-12-14 16:26:27,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:26:27" (1/1) ... [2021-12-14 16:26:27,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:26:27" (1/1) ... [2021-12-14 16:26:27,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:26:27" (1/1) ... [2021-12-14 16:26:27,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:26:27" (1/1) ... [2021-12-14 16:26:27,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 16:26:27,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 16:26:27,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 16:26:27,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 16:26:27,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:26:27" (1/1) ... [2021-12-14 16:26:27,696 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:26:27,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:26:27,717 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 16:26:27,743 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 16:26:27,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 16:26:27,747 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-14 16:26:27,748 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-14 16:26:27,748 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-12-14 16:26:27,749 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-12-14 16:26:27,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 16:26:27,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 16:26:27,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 16:26:27,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-14 16:26:27,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-14 16:26:27,801 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 16:26:27,802 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 16:26:27,937 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 16:26:27,942 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 16:26:27,942 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-14 16:26:27,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:26:27 BoogieIcfgContainer [2021-12-14 16:26:27,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 16:26:27,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 16:26:27,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 16:26:27,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 16:26:27,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:26:27" (1/3) ... [2021-12-14 16:26:27,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498c57a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:26:27, skipping insertion in model container [2021-12-14 16:26:27,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:26:27" (2/3) ... [2021-12-14 16:26:27,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498c57a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:26:27, skipping insertion in model container [2021-12-14 16:26:27,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:26:27" (3/3) ... [2021-12-14 16:26:27,948 INFO L111 eAbstractionObserver]: Analyzing ICFG square_8+soft_float_4-3a.c.cil.c [2021-12-14 16:26:27,951 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 16:26:27,951 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 16:26:27,978 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 16:26:27,982 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 16:26:27,982 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 16:26:27,993 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 50 states have internal predecessors, (71), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-14 16:26:27,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-14 16:26:27,995 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:26:27,996 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:26:27,996 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:26:27,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:26:28,003 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-12-14 16:26:28,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:26:28,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085920168] [2021-12-14 16:26:28,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:26:28,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:26:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:26:28,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:26:28,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:26:28,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085920168] [2021-12-14 16:26:28,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085920168] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:26:28,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:26:28,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 16:26:28,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098890999] [2021-12-14 16:26:28,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:26:28,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 16:26:28,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:26:28,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 16:26:28,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 16:26:28,111 INFO L87 Difference]: Start difference. First operand has 63 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 50 states have internal predecessors, (71), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 16:26:28,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:26:28,129 INFO L93 Difference]: Finished difference Result 121 states and 179 transitions. [2021-12-14 16:26:28,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 16:26:28,130 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-12-14 16:26:28,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:26:28,135 INFO L225 Difference]: With dead ends: 121 [2021-12-14 16:26:28,137 INFO L226 Difference]: Without dead ends: 56 [2021-12-14 16:26:28,139 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 [2021-12-14 16:26:28,142 INFO L933 BasicCegarLoop]: 82 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, 82 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 [2021-12-14 16:26:28,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 16:26:28,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-14 16:26:28,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-12-14 16:26:28,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 44 states have internal predecessors, (57), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-14 16:26:28,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 74 transitions. [2021-12-14 16:26:28,168 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 74 transitions. Word has length 7 [2021-12-14 16:26:28,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:26:28,168 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 74 transitions. [2021-12-14 16:26:28,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 16:26:28,168 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 74 transitions. [2021-12-14 16:26:28,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-14 16:26:28,169 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:26:28,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:26:28,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 16:26:28,169 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:26:28,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:26:28,170 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-12-14 16:26:28,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:26:28,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374153270] [2021-12-14 16:26:28,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:26:28,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:26:28,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 16:26:28,183 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 16:26:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 16:26:28,198 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 16:26:28,199 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-14 16:26:28,200 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-14 16:26:28,201 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-14 16:26:28,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 16:26:28,206 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-14 16:26:28,208 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 16:26:28,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 04:26:28 BoogieIcfgContainer [2021-12-14 16:26:28,221 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 16:26:28,221 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 16:26:28,221 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 16:26:28,222 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 16:26:28,222 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:26:27" (3/4) ... [2021-12-14 16:26:28,224 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-14 16:26:28,224 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 16:26:28,225 INFO L158 Benchmark]: Toolchain (without parser) took 871.18ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 57.6MB in the beginning and 39.7MB in the end (delta: 17.9MB). Peak memory consumption was 32.8MB. Max. memory is 16.1GB. [2021-12-14 16:26:28,225 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 88.1MB. Free memory is still 45.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 16:26:28,225 INFO L158 Benchmark]: CACSL2BoogieTranslator took 279.85ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 57.4MB in the beginning and 80.4MB in the end (delta: -23.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 16:26:28,226 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.07ms. Allocated memory is still 107.0MB. Free memory was 80.4MB in the beginning and 79.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 16:26:28,226 INFO L158 Benchmark]: Boogie Preprocessor took 32.98ms. Allocated memory is still 107.0MB. Free memory was 79.0MB in the beginning and 77.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 16:26:28,226 INFO L158 Benchmark]: RCFGBuilder took 252.96ms. Allocated memory is still 107.0MB. Free memory was 77.5MB in the beginning and 64.3MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-14 16:26:28,227 INFO L158 Benchmark]: TraceAbstraction took 276.60ms. Allocated memory is still 107.0MB. Free memory was 63.7MB in the beginning and 40.0MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-14 16:26:28,227 INFO L158 Benchmark]: Witness Printer took 2.60ms. Allocated memory is still 107.0MB. Free memory was 40.0MB in the beginning and 39.7MB in the end (delta: 258.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 16:26:28,229 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 88.1MB. Free memory is still 45.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 279.85ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 57.4MB in the beginning and 80.4MB in the end (delta: -23.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.07ms. Allocated memory is still 107.0MB. Free memory was 80.4MB in the beginning and 79.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.98ms. Allocated memory is still 107.0MB. Free memory was 79.0MB in the beginning and 77.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 252.96ms. Allocated memory is still 107.0MB. Free memory was 77.5MB in the beginning and 64.3MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 276.60ms. Allocated memory is still 107.0MB. Free memory was 63.7MB in the beginning and 40.0MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 2.60ms. Allocated memory is still 107.0MB. Free memory was 40.0MB in the beginning and 39.7MB in the end (delta: 258.3kB). 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: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L309] COND TRUE __VERIFIER_nondet_int() [L310] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=49, x=49] [L47] COND TRUE !(result >= 0.0f && result < 1.5f) VAL [IN=49, x=49] [L48] reach_error() VAL [IN=49, x=49] - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 63 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 82 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, 82 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=63occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 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 [2021-12-14 16:26:28,255 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/combinations/square_8+soft_float_4-3a.c.cil.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 3a1b0d13ed57f2c287b7c5c279f90464e92ac535bf47194a470e4f6c38d6c07a --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 16:26:29,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 16:26:29,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 16:26:29,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 16:26:29,992 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 16:26:29,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 16:26:29,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 16:26:29,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 16:26:30,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 16:26:30,004 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 16:26:30,005 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 16:26:30,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 16:26:30,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 16:26:30,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 16:26:30,010 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 16:26:30,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 16:26:30,015 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 16:26:30,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 16:26:30,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 16:26:30,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 16:26:30,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 16:26:30,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 16:26:30,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 16:26:30,035 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 16:26:30,040 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 16:26:30,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 16:26:30,040 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 16:26:30,041 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 16:26:30,042 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 16:26:30,042 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 16:26:30,042 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 16:26:30,043 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 16:26:30,044 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 16:26:30,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 16:26:30,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 16:26:30,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 16:26:30,046 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 16:26:30,046 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 16:26:30,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 16:26:30,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 16:26:30,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 16:26:30,048 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-14 16:26:30,075 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 16:26:30,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 16:26:30,075 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 16:26:30,075 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 16:26:30,076 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 16:26:30,076 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 16:26:30,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 16:26:30,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 16:26:30,077 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 16:26:30,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 16:26:30,078 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 16:26:30,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 16:26:30,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 16:26:30,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 16:26:30,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 16:26:30,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 16:26:30,079 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-14 16:26:30,079 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-14 16:26:30,079 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-14 16:26:30,079 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 16:26:30,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 16:26:30,079 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 16:26:30,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 16:26:30,084 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 16:26:30,084 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 16:26:30,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 16:26:30,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:26:30,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 16:26:30,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 16:26:30,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 16:26:30,085 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-14 16:26:30,086 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-14 16:26:30,086 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 16:26:30,086 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 16:26:30,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 16:26:30,086 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 16:26:30,086 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-14 16:26:30,087 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a1b0d13ed57f2c287b7c5c279f90464e92ac535bf47194a470e4f6c38d6c07a [2021-12-14 16:26:30,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 16:26:30,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 16:26:30,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 16:26:30,333 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 16:26:30,334 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 16:26:30,335 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c [2021-12-14 16:26:30,375 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88af62ab6/ea7eaad9f6c3489bbb0c1dbde8c9151b/FLAG19be43158 [2021-12-14 16:26:30,767 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 16:26:30,768 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c [2021-12-14 16:26:30,774 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88af62ab6/ea7eaad9f6c3489bbb0c1dbde8c9151b/FLAG19be43158 [2021-12-14 16:26:30,785 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88af62ab6/ea7eaad9f6c3489bbb0c1dbde8c9151b [2021-12-14 16:26:30,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 16:26:30,788 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 16:26:30,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 16:26:30,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 16:26:30,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 16:26:30,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:26:30" (1/1) ... [2021-12-14 16:26:30,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@210dc8e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:26:30, skipping insertion in model container [2021-12-14 16:26:30,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:26:30" (1/1) ... [2021-12-14 16:26:30,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 16:26:30,828 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 16:26:30,954 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/combinations/square_8+soft_float_4-3a.c.cil.c[1995,2008] [2021-12-14 16:26:30,958 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/combinations/square_8+soft_float_4-3a.c.cil.c[2364,2377] [2021-12-14 16:26:31,002 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:26:31,015 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 16:26:31,033 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/combinations/square_8+soft_float_4-3a.c.cil.c[1995,2008] [2021-12-14 16:26:31,035 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/combinations/square_8+soft_float_4-3a.c.cil.c[2364,2377] [2021-12-14 16:26:31,051 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:26:31,065 INFO L208 MainTranslator]: Completed translation [2021-12-14 16:26:31,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:26:31 WrapperNode [2021-12-14 16:26:31,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 16:26:31,066 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 16:26:31,066 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 16:26:31,066 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 16:26:31,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:26:31" (1/1) ... [2021-12-14 16:26:31,087 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:26:31" (1/1) ... [2021-12-14 16:26:31,106 INFO L137 Inliner]: procedures = 28, calls = 20, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70 [2021-12-14 16:26:31,106 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 16:26:31,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 16:26:31,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 16:26:31,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 16:26:31,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:26:31" (1/1) ... [2021-12-14 16:26:31,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:26:31" (1/1) ... [2021-12-14 16:26:31,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:26:31" (1/1) ... [2021-12-14 16:26:31,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:26:31" (1/1) ... [2021-12-14 16:26:31,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:26:31" (1/1) ... [2021-12-14 16:26:31,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:26:31" (1/1) ... [2021-12-14 16:26:31,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:26:31" (1/1) ... [2021-12-14 16:26:31,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 16:26:31,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 16:26:31,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 16:26:31,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 16:26:31,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:26:31" (1/1) ... [2021-12-14 16:26:31,163 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:26:31,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:26:31,182 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 16:26:31,204 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 16:26:31,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 16:26:31,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-14 16:26:31,215 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-14 16:26:31,215 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-14 16:26:31,215 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-12-14 16:26:31,215 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-12-14 16:26:31,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 16:26:31,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 16:26:31,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-14 16:26:31,216 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-14 16:26:31,285 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 16:26:31,286 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 16:26:33,688 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 16:26:33,692 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 16:26:33,692 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-14 16:26:33,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:26:33 BoogieIcfgContainer [2021-12-14 16:26:33,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 16:26:33,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 16:26:33,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 16:26:33,696 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 16:26:33,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:26:30" (1/3) ... [2021-12-14 16:26:33,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e265437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:26:33, skipping insertion in model container [2021-12-14 16:26:33,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:26:31" (2/3) ... [2021-12-14 16:26:33,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e265437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:26:33, skipping insertion in model container [2021-12-14 16:26:33,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:26:33" (3/3) ... [2021-12-14 16:26:33,698 INFO L111 eAbstractionObserver]: Analyzing ICFG square_8+soft_float_4-3a.c.cil.c [2021-12-14 16:26:33,702 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 16:26:33,702 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 16:26:33,731 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 16:26:33,735 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 16:26:33,735 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 16:26:33,745 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 50 states have internal predecessors, (71), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-14 16:26:33,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-14 16:26:33,747 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:26:33,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:26:33,748 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:26:33,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:26:33,751 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-12-14 16:26:33,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 16:26:33,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [303151064] [2021-12-14 16:26:33,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:26:33,760 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 16:26:33,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 16:26:33,762 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 16:26:33,763 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 16:26:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:26:34,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-14 16:26:34,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:26:34,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:26:34,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 16:26:34,160 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 16:26:34,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [303151064] [2021-12-14 16:26:34,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [303151064] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:26:34,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:26:34,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 16:26:34,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89300056] [2021-12-14 16:26:34,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:26:34,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 16:26:34,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 16:26:34,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 16:26:34,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 16:26:34,184 INFO L87 Difference]: Start difference. First operand has 63 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 50 states have internal predecessors, (71), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 16:26:34,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:26:34,201 INFO L93 Difference]: Finished difference Result 121 states and 179 transitions. [2021-12-14 16:26:34,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 16:26:34,203 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-12-14 16:26:34,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:26:34,207 INFO L225 Difference]: With dead ends: 121 [2021-12-14 16:26:34,208 INFO L226 Difference]: Without dead ends: 56 [2021-12-14 16:26:34,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 16:26:34,216 INFO L933 BasicCegarLoop]: 82 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, 82 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 [2021-12-14 16:26:34,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 16:26:34,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-14 16:26:34,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-12-14 16:26:34,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 44 states have internal predecessors, (57), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-14 16:26:34,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 74 transitions. [2021-12-14 16:26:34,262 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 74 transitions. Word has length 7 [2021-12-14 16:26:34,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:26:34,262 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 74 transitions. [2021-12-14 16:26:34,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 16:26:34,263 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 74 transitions. [2021-12-14 16:26:34,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-14 16:26:34,264 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:26:34,264 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:26:34,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-14 16:26:34,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 16:26:34,479 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:26:34,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:26:34,480 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-12-14 16:26:34,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 16:26:34,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [547594480] [2021-12-14 16:26:34,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:26:34,481 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 16:26:34,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 16:26:34,484 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) [2021-12-14 16:26:34,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-14 16:26:49,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:26:49,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-14 16:26:49,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:27:04,982 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0) (= |c_ULTIMATE.start_main1_~result~0#1| (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false