./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_1+soft_float_4-2a.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_1+soft_float_4-2a.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 5af10be63cc32bea05b0693de4e6da336982b76ff2f5b4edc2ff1c6a5e6322ec --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 16:22:05,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 16:22:05,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 16:22:05,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 16:22:05,178 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 16:22:05,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 16:22:05,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 16:22:05,188 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 16:22:05,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 16:22:05,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 16:22:05,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 16:22:05,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 16:22:05,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 16:22:05,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 16:22:05,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 16:22:05,198 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 16:22:05,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 16:22:05,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 16:22:05,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 16:22:05,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 16:22:05,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 16:22:05,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 16:22:05,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 16:22:05,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 16:22:05,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 16:22:05,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 16:22:05,217 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 16:22:05,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 16:22:05,220 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 16:22:05,220 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 16:22:05,221 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 16:22:05,222 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 16:22:05,223 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 16:22:05,224 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 16:22:05,225 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 16:22:05,226 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 16:22:05,227 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 16:22:05,227 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 16:22:05,227 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 16:22:05,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 16:22:05,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 16:22:05,229 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 16:22:05,253 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 16:22:05,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 16:22:05,254 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 16:22:05,254 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 16:22:05,255 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 16:22:05,255 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 16:22:05,256 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 16:22:05,256 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 16:22:05,256 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 16:22:05,256 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 16:22:05,257 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 16:22:05,257 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 16:22:05,257 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 16:22:05,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 16:22:05,257 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 16:22:05,258 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 16:22:05,258 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 16:22:05,258 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 16:22:05,258 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 16:22:05,258 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 16:22:05,259 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 16:22:05,259 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 16:22:05,259 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 16:22:05,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 16:22:05,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:22:05,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 16:22:05,260 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 16:22:05,260 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 16:22:05,260 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 16:22:05,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 16:22:05,261 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 16:22:05,261 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 16:22:05,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 16:22:05,261 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 16:22:05,261 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5af10be63cc32bea05b0693de4e6da336982b76ff2f5b4edc2ff1c6a5e6322ec [2021-12-14 16:22:05,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 16:22:05,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 16:22:05,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 16:22:05,541 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 16:22:05,541 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 16:22:05,542 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c [2021-12-14 16:22:05,613 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4387fca1/4790d81038924c4ba01e27108118944b/FLAG181a5925c [2021-12-14 16:22:06,110 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 16:22:06,111 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c [2021-12-14 16:22:06,120 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4387fca1/4790d81038924c4ba01e27108118944b/FLAG181a5925c [2021-12-14 16:22:06,618 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4387fca1/4790d81038924c4ba01e27108118944b [2021-12-14 16:22:06,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 16:22:06,626 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 16:22:06,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 16:22:06,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 16:22:06,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 16:22:06,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:22:06" (1/1) ... [2021-12-14 16:22:06,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@491b5f66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:06, skipping insertion in model container [2021-12-14 16:22:06,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:22:06" (1/1) ... [2021-12-14 16:22:06,640 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 16:22:06,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 16:22:06,826 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_1+soft_float_4-2a.c.cil.c[1996,2009] [2021-12-14 16:22:06,830 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_1+soft_float_4-2a.c.cil.c[2390,2403] [2021-12-14 16:22:06,859 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:22:06,866 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 16:22:06,885 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_1+soft_float_4-2a.c.cil.c[1996,2009] [2021-12-14 16:22:06,886 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_1+soft_float_4-2a.c.cil.c[2390,2403] [2021-12-14 16:22:06,906 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:22:06,922 INFO L208 MainTranslator]: Completed translation [2021-12-14 16:22:06,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:06 WrapperNode [2021-12-14 16:22:06,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 16:22:06,924 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 16:22:06,924 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 16:22:06,924 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 16:22:06,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:06" (1/1) ... [2021-12-14 16:22:06,945 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:06" (1/1) ... [2021-12-14 16:22:06,972 INFO L137 Inliner]: procedures = 27, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2021-12-14 16:22:06,973 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 16:22:06,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 16:22:06,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 16:22:06,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 16:22:06,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:06" (1/1) ... [2021-12-14 16:22:06,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:06" (1/1) ... [2021-12-14 16:22:06,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:06" (1/1) ... [2021-12-14 16:22:07,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:06" (1/1) ... [2021-12-14 16:22:07,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:06" (1/1) ... [2021-12-14 16:22:07,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:06" (1/1) ... [2021-12-14 16:22:07,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:06" (1/1) ... [2021-12-14 16:22:07,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 16:22:07,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 16:22:07,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 16:22:07,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 16:22:07,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:06" (1/1) ... [2021-12-14 16:22:07,044 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:22:07,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:22:07,063 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 16:22:07,065 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 16:22:07,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 16:22:07,096 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-14 16:22:07,096 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-14 16:22:07,097 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-12-14 16:22:07,098 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-12-14 16:22:07,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 16:22:07,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 16:22:07,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 16:22:07,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-14 16:22:07,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-14 16:22:07,201 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 16:22:07,216 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 16:22:07,525 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 16:22:07,531 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 16:22:07,533 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-14 16:22:07,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:22:07 BoogieIcfgContainer [2021-12-14 16:22:07,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 16:22:07,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 16:22:07,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 16:22:07,542 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 16:22:07,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:22:06" (1/3) ... [2021-12-14 16:22:07,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@187428bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:22:07, skipping insertion in model container [2021-12-14 16:22:07,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:06" (2/3) ... [2021-12-14 16:22:07,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@187428bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:22:07, skipping insertion in model container [2021-12-14 16:22:07,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:22:07" (3/3) ... [2021-12-14 16:22:07,545 INFO L111 eAbstractionObserver]: Analyzing ICFG square_1+soft_float_4-2a.c.cil.c [2021-12-14 16:22:07,550 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 16:22:07,550 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 16:22:07,627 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 16:22:07,633 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 16:22:07,634 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 16:22:07,660 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-14 16:22:07,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-14 16:22:07,664 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:22:07,664 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:22:07,665 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:22:07,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:22:07,669 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-12-14 16:22:07,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:22:07,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243737571] [2021-12-14 16:22:07,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:22:07,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:22:07,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:22:07,779 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 16:22:07,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:22:07,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243737571] [2021-12-14 16:22:07,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243737571] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:22:07,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:22:07,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 16:22:07,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670367176] [2021-12-14 16:22:07,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:22:07,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 16:22:07,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:22:07,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 16:22:07,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 16:22:07,812 INFO L87 Difference]: Start difference. First operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) 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 16:22:07,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:22:07,846 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2021-12-14 16:22:07,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 16:22:07,849 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 16:22:07,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:22:07,857 INFO L225 Difference]: With dead ends: 121 [2021-12-14 16:22:07,858 INFO L226 Difference]: Without dead ends: 56 [2021-12-14 16:22:07,862 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 16:22:07,866 INFO L933 BasicCegarLoop]: 81 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, 81 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 16:22:07,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 16:22:07,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-14 16:22:07,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-12-14 16:22:07,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 45 states have internal predecessors, (58), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-14 16:22:07,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2021-12-14 16:22:07,920 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 7 [2021-12-14 16:22:07,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:22:07,921 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2021-12-14 16:22:07,922 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 16:22:07,922 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2021-12-14 16:22:07,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-14 16:22:07,923 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:22:07,923 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:22:07,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 16:22:07,924 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:22:07,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:22:07,927 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-12-14 16:22:07,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:22:07,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48339189] [2021-12-14 16:22:07,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:22:07,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:22:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 16:22:07,961 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 16:22:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 16:22:08,002 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 16:22:08,002 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-14 16:22:08,004 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-14 16:22:08,005 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-14 16:22:08,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 16:22:08,011 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-14 16:22:08,013 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 16:22:08,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 04:22:08 BoogieIcfgContainer [2021-12-14 16:22:08,035 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 16:22:08,036 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 16:22:08,037 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 16:22:08,037 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 16:22:08,038 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:22:07" (3/4) ... [2021-12-14 16:22:08,040 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-14 16:22:08,040 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 16:22:08,042 INFO L158 Benchmark]: Toolchain (without parser) took 1415.23ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 48.7MB in the beginning and 54.9MB in the end (delta: -6.2MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2021-12-14 16:22:08,043 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 81.8MB. Free memory was 52.2MB in the beginning and 52.2MB in the end (delta: 26.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 16:22:08,045 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.14ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 48.5MB in the beginning and 70.7MB in the end (delta: -22.2MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2021-12-14 16:22:08,046 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.85ms. Allocated memory is still 98.6MB. Free memory was 70.7MB in the beginning and 68.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 16:22:08,048 INFO L158 Benchmark]: Boogie Preprocessor took 55.25ms. Allocated memory is still 98.6MB. Free memory was 68.9MB in the beginning and 67.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 16:22:08,048 INFO L158 Benchmark]: RCFGBuilder took 507.29ms. Allocated memory is still 98.6MB. Free memory was 67.6MB in the beginning and 54.3MB in the end (delta: 13.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-14 16:22:08,048 INFO L158 Benchmark]: TraceAbstraction took 497.39ms. Allocated memory is still 98.6MB. Free memory was 53.9MB in the beginning and 55.6MB in the end (delta: -1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 16:22:08,049 INFO L158 Benchmark]: Witness Printer took 4.00ms. Allocated memory is still 98.6MB. Free memory was 55.6MB in the beginning and 54.9MB in the end (delta: 705.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 16:22:08,055 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 81.8MB. Free memory was 52.2MB in the beginning and 52.2MB in the end (delta: 26.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 295.14ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 48.5MB in the beginning and 70.7MB in the end (delta: -22.2MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.85ms. Allocated memory is still 98.6MB. Free memory was 70.7MB in the beginning and 68.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 55.25ms. Allocated memory is still 98.6MB. Free memory was 68.9MB in the beginning and 67.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 507.29ms. Allocated memory is still 98.6MB. Free memory was 67.6MB in the beginning and 54.3MB in the end (delta: 13.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 497.39ms. Allocated memory is still 98.6MB. Free memory was 53.9MB in the beginning and 55.6MB in the end (delta: -1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.00ms. Allocated memory is still 98.6MB. Free memory was 55.6MB in the beginning and 54.9MB in the end (delta: 705.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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: [L310] COND TRUE __VERIFIER_nondet_int() [L311] 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 < 1.39f) VAL [IN=49, x=49] [L48] reach_error() VAL [IN=49, x=49] - UnprovableResult [Line: 61]: 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: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 81 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, 81 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 16:22:08,101 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_1+soft_float_4-2a.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 5af10be63cc32bea05b0693de4e6da336982b76ff2f5b4edc2ff1c6a5e6322ec --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 16:22:10,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 16:22:10,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 16:22:10,166 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 16:22:10,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 16:22:10,170 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 16:22:10,172 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 16:22:10,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 16:22:10,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 16:22:10,182 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 16:22:10,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 16:22:10,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 16:22:10,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 16:22:10,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 16:22:10,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 16:22:10,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 16:22:10,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 16:22:10,194 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 16:22:10,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 16:22:10,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 16:22:10,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 16:22:10,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 16:22:10,206 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 16:22:10,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 16:22:10,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 16:22:10,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 16:22:10,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 16:22:10,214 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 16:22:10,215 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 16:22:10,215 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 16:22:10,216 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 16:22:10,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 16:22:10,217 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 16:22:10,218 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 16:22:10,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 16:22:10,219 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 16:22:10,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 16:22:10,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 16:22:10,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 16:22:10,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 16:22:10,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 16:22:10,222 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-14 16:22:10,247 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 16:22:10,249 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 16:22:10,251 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 16:22:10,251 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 16:22:10,252 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 16:22:10,252 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 16:22:10,253 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 16:22:10,253 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 16:22:10,253 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 16:22:10,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 16:22:10,254 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 16:22:10,255 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 16:22:10,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 16:22:10,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 16:22:10,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 16:22:10,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 16:22:10,256 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-14 16:22:10,256 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-14 16:22:10,256 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-14 16:22:10,256 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 16:22:10,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 16:22:10,257 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 16:22:10,257 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 16:22:10,263 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 16:22:10,263 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 16:22:10,263 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 16:22:10,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:22:10,264 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 16:22:10,264 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 16:22:10,264 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 16:22:10,264 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-14 16:22:10,265 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-14 16:22:10,265 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 16:22:10,265 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 16:22:10,265 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 16:22:10,266 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 16:22:10,266 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-14 16:22:10,266 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5af10be63cc32bea05b0693de4e6da336982b76ff2f5b4edc2ff1c6a5e6322ec [2021-12-14 16:22:10,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 16:22:10,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 16:22:10,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 16:22:10,641 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 16:22:10,641 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 16:22:10,643 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c [2021-12-14 16:22:10,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d78ae44e/c26127edb89f4beea94aae1289345cc0/FLAGd623dd3a1 [2021-12-14 16:22:11,230 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 16:22:11,230 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c [2021-12-14 16:22:11,242 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d78ae44e/c26127edb89f4beea94aae1289345cc0/FLAGd623dd3a1 [2021-12-14 16:22:11,728 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d78ae44e/c26127edb89f4beea94aae1289345cc0 [2021-12-14 16:22:11,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 16:22:11,731 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 16:22:11,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 16:22:11,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 16:22:11,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 16:22:11,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:22:11" (1/1) ... [2021-12-14 16:22:11,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17eb4b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:11, skipping insertion in model container [2021-12-14 16:22:11,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:22:11" (1/1) ... [2021-12-14 16:22:11,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 16:22:11,769 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 16:22:11,913 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_1+soft_float_4-2a.c.cil.c[1996,2009] [2021-12-14 16:22:11,917 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_1+soft_float_4-2a.c.cil.c[2390,2403] [2021-12-14 16:22:11,979 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:22:11,997 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 16:22:12,009 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_1+soft_float_4-2a.c.cil.c[1996,2009] [2021-12-14 16:22:12,010 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_1+soft_float_4-2a.c.cil.c[2390,2403] [2021-12-14 16:22:12,032 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:22:12,046 INFO L208 MainTranslator]: Completed translation [2021-12-14 16:22:12,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:12 WrapperNode [2021-12-14 16:22:12,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 16:22:12,051 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 16:22:12,051 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 16:22:12,051 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 16:22:12,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:12" (1/1) ... [2021-12-14 16:22:12,066 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:12" (1/1) ... [2021-12-14 16:22:12,086 INFO L137 Inliner]: procedures = 28, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70 [2021-12-14 16:22:12,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 16:22:12,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 16:22:12,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 16:22:12,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 16:22:12,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:12" (1/1) ... [2021-12-14 16:22:12,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:12" (1/1) ... [2021-12-14 16:22:12,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:12" (1/1) ... [2021-12-14 16:22:12,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:12" (1/1) ... [2021-12-14 16:22:12,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:12" (1/1) ... [2021-12-14 16:22:12,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:12" (1/1) ... [2021-12-14 16:22:12,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:12" (1/1) ... [2021-12-14 16:22:12,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 16:22:12,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 16:22:12,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 16:22:12,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 16:22:12,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:12" (1/1) ... [2021-12-14 16:22:12,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:22:12,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:22:12,155 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 16:22:12,173 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 16:22:12,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 16:22:12,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-14 16:22:12,187 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-14 16:22:12,188 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-14 16:22:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-12-14 16:22:12,188 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-12-14 16:22:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 16:22:12,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 16:22:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-14 16:22:12,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-14 16:22:12,255 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 16:22:12,257 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 16:22:14,774 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 16:22:14,780 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 16:22:14,781 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-14 16:22:14,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:22:14 BoogieIcfgContainer [2021-12-14 16:22:14,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 16:22:14,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 16:22:14,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 16:22:14,787 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 16:22:14,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:22:11" (1/3) ... [2021-12-14 16:22:14,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb89f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:22:14, skipping insertion in model container [2021-12-14 16:22:14,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:22:12" (2/3) ... [2021-12-14 16:22:14,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb89f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:22:14, skipping insertion in model container [2021-12-14 16:22:14,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:22:14" (3/3) ... [2021-12-14 16:22:14,789 INFO L111 eAbstractionObserver]: Analyzing ICFG square_1+soft_float_4-2a.c.cil.c [2021-12-14 16:22:14,794 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 16:22:14,794 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 16:22:14,833 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 16:22:14,839 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 16:22:14,840 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 16:22:14,855 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-14 16:22:14,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-14 16:22:14,859 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:22:14,859 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:22:14,860 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:22:14,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:22:14,865 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-12-14 16:22:14,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 16:22:14,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [435787693] [2021-12-14 16:22:14,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:22:14,877 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 16:22:14,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 16:22:14,883 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 16:22:14,891 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 16:22:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:22:15,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-14 16:22:15,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:22:15,461 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 16:22:15,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 16:22:15,462 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 16:22:15,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [435787693] [2021-12-14 16:22:15,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [435787693] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:22:15,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:22:15,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 16:22:15,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828064890] [2021-12-14 16:22:15,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:22:15,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 16:22:15,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 16:22:15,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 16:22:15,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 16:22:15,512 INFO L87 Difference]: Start difference. First operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) 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 16:22:15,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:22:15,555 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2021-12-14 16:22:15,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 16:22:15,557 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 16:22:15,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:22:15,565 INFO L225 Difference]: With dead ends: 121 [2021-12-14 16:22:15,565 INFO L226 Difference]: Without dead ends: 56 [2021-12-14 16:22:15,569 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 16:22:15,573 INFO L933 BasicCegarLoop]: 81 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, 81 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 16:22:15,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 16:22:15,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-14 16:22:15,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-12-14 16:22:15,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 45 states have internal predecessors, (58), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-14 16:22:15,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2021-12-14 16:22:15,618 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 7 [2021-12-14 16:22:15,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:22:15,618 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2021-12-14 16:22:15,619 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 16:22:15,619 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2021-12-14 16:22:15,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-14 16:22:15,619 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:22:15,620 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:22:15,639 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 16:22:15,830 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 16:22:15,830 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:22:15,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:22:15,831 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-12-14 16:22:15,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 16:22:15,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1792457729] [2021-12-14 16:22:15,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:22:15,832 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 16:22:15,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 16:22:15,837 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 16:22:15,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process