./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/square_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/floats-cdfpl/square_1.i -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 14ef7b4695081d3e006bc43e895bc31c74bdc7ec3cae3cedfb7a87dd07fa43f0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 13:27:04,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 13:27:04,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 13:27:05,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 13:27:05,003 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 13:27:05,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 13:27:05,006 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 13:27:05,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 13:27:05,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 13:27:05,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 13:27:05,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 13:27:05,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 13:27:05,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 13:27:05,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 13:27:05,023 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 13:27:05,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 13:27:05,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 13:27:05,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 13:27:05,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 13:27:05,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 13:27:05,038 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 13:27:05,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 13:27:05,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 13:27:05,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 13:27:05,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 13:27:05,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 13:27:05,045 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 13:27:05,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 13:27:05,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 13:27:05,047 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 13:27:05,048 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 13:27:05,048 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 13:27:05,049 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 13:27:05,050 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 13:27:05,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 13:27:05,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 13:27:05,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 13:27:05,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 13:27:05,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 13:27:05,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 13:27:05,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 13:27:05,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 13:27:05,057 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 13:27:05,087 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 13:27:05,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 13:27:05,088 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 13:27:05,088 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 13:27:05,089 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 13:27:05,089 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 13:27:05,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 13:27:05,089 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 13:27:05,090 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 13:27:05,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 13:27:05,091 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 13:27:05,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 13:27:05,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 13:27:05,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 13:27:05,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 13:27:05,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 13:27:05,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 13:27:05,092 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 13:27:05,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 13:27:05,092 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 13:27:05,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 13:27:05,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 13:27:05,093 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 13:27:05,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 13:27:05,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:27:05,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 13:27:05,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 13:27:05,094 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 13:27:05,094 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 13:27:05,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 13:27:05,094 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 13:27:05,094 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 13:27:05,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 13:27:05,095 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14ef7b4695081d3e006bc43e895bc31c74bdc7ec3cae3cedfb7a87dd07fa43f0 [2022-07-19 13:27:05,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 13:27:05,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 13:27:05,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 13:27:05,345 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 13:27:05,346 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 13:27:05,347 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/square_1.i [2022-07-19 13:27:05,403 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17acbb9a5/1eb83f68bb5c47f7b4bad67db6c25244/FLAG5ed054f7f [2022-07-19 13:27:05,756 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 13:27:05,757 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/square_1.i [2022-07-19 13:27:05,761 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17acbb9a5/1eb83f68bb5c47f7b4bad67db6c25244/FLAG5ed054f7f [2022-07-19 13:27:05,771 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17acbb9a5/1eb83f68bb5c47f7b4bad67db6c25244 [2022-07-19 13:27:05,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 13:27:05,774 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 13:27:05,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 13:27:05,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 13:27:05,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 13:27:05,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:27:05" (1/1) ... [2022-07-19 13:27:05,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@537aadfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:27:05, skipping insertion in model container [2022-07-19 13:27:05,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:27:05" (1/1) ... [2022-07-19 13:27:05,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 13:27:05,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 13:27:05,894 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/floats-cdfpl/square_1.i[1626,1639] [2022-07-19 13:27:05,897 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:27:05,904 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 13:27:05,926 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/floats-cdfpl/square_1.i[1626,1639] [2022-07-19 13:27:05,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:27:05,946 INFO L208 MainTranslator]: Completed translation [2022-07-19 13:27:05,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:27:05 WrapperNode [2022-07-19 13:27:05,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 13:27:05,948 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 13:27:05,948 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 13:27:05,949 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 13:27:05,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:27:05" (1/1) ... [2022-07-19 13:27:05,960 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:27:05" (1/1) ... [2022-07-19 13:27:05,975 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2022-07-19 13:27:05,976 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 13:27:05,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 13:27:05,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 13:27:05,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 13:27:05,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:27:05" (1/1) ... [2022-07-19 13:27:05,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:27:05" (1/1) ... [2022-07-19 13:27:05,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:27:05" (1/1) ... [2022-07-19 13:27:05,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:27:05" (1/1) ... [2022-07-19 13:27:05,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:27:05" (1/1) ... [2022-07-19 13:27:05,989 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:27:05" (1/1) ... [2022-07-19 13:27:05,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:27:05" (1/1) ... [2022-07-19 13:27:05,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 13:27:05,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 13:27:05,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 13:27:05,992 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 13:27:05,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:27:05" (1/1) ... [2022-07-19 13:27:06,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:27:06,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:27:06,024 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) [2022-07-19 13:27:06,025 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 [2022-07-19 13:27:06,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 13:27:06,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 13:27:06,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 13:27:06,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 13:27:06,102 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 13:27:06,103 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 13:27:06,172 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 13:27:06,177 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 13:27:06,177 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 13:27:06,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:27:06 BoogieIcfgContainer [2022-07-19 13:27:06,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 13:27:06,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 13:27:06,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 13:27:06,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 13:27:06,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 01:27:05" (1/3) ... [2022-07-19 13:27:06,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b5a74e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:27:06, skipping insertion in model container [2022-07-19 13:27:06,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:27:05" (2/3) ... [2022-07-19 13:27:06,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b5a74e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:27:06, skipping insertion in model container [2022-07-19 13:27:06,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:27:06" (3/3) ... [2022-07-19 13:27:06,187 INFO L111 eAbstractionObserver]: Analyzing ICFG square_1.i [2022-07-19 13:27:06,199 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 13:27:06,199 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 13:27:06,240 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 13:27:06,246 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2de5f4ad, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3b273bd3 [2022-07-19 13:27:06,247 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 13:27:06,250 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:27:06,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-19 13:27:06,256 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:27:06,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-19 13:27:06,257 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:27:06,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:27:06,262 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2022-07-19 13:27:06,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:27:06,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626441548] [2022-07-19 13:27:06,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:27:06,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:27:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:27:06,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:27:06,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:27:06,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626441548] [2022-07-19 13:27:06,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626441548] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:27:06,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:27:06,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 13:27:06,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968025840] [2022-07-19 13:27:06,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:27:06,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 13:27:06,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:27:06,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 13:27:06,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 13:27:06,500 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-07-19 13:27:06,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:27:06,513 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-07-19 13:27:06,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 13:27:06,515 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2022-07-19 13:27:06,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:27:06,521 INFO L225 Difference]: With dead ends: 19 [2022-07-19 13:27:06,521 INFO L226 Difference]: Without dead ends: 7 [2022-07-19 13:27:06,525 INFO L412 NwaCegarLoop]: 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 [2022-07-19 13:27:06,528 INFO L413 NwaCegarLoop]: 10 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, 10 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 [2022-07-19 13:27:06,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 13:27:06,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2022-07-19 13:27:06,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2022-07-19 13:27:06,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 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) [2022-07-19 13:27:06,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2022-07-19 13:27:06,554 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2022-07-19 13:27:06,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:27:06,554 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2022-07-19 13:27:06,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-07-19 13:27:06,555 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2022-07-19 13:27:06,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-19 13:27:06,556 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:27:06,556 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-19 13:27:06,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 13:27:06,557 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:27:06,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:27:06,558 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2022-07-19 13:27:06,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:27:06,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350123665] [2022-07-19 13:27:06,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:27:06,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:27:06,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 13:27:06,595 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 13:27:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 13:27:06,627 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 13:27:06,627 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 13:27:06,629 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 13:27:06,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 13:27:06,637 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-19 13:27:06,640 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 13:27:06,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 01:27:06 BoogieIcfgContainer [2022-07-19 13:27:06,668 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 13:27:06,669 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 13:27:06,669 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 13:27:06,669 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 13:27:06,670 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:27:06" (3/4) ... [2022-07-19 13:27:06,672 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-19 13:27:06,673 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 13:27:06,674 INFO L158 Benchmark]: Toolchain (without parser) took 899.41ms. Allocated memory was 86.0MB in the beginning and 115.3MB in the end (delta: 29.4MB). Free memory was 48.1MB in the beginning and 81.7MB in the end (delta: -33.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:27:06,674 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 86.0MB. Free memory is still 64.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:27:06,677 INFO L158 Benchmark]: CACSL2BoogieTranslator took 172.51ms. Allocated memory was 86.0MB in the beginning and 115.3MB in the end (delta: 29.4MB). Free memory was 47.9MB in the beginning and 94.5MB in the end (delta: -46.6MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2022-07-19 13:27:06,678 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.54ms. Allocated memory is still 115.3MB. Free memory was 94.5MB in the beginning and 93.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 13:27:06,679 INFO L158 Benchmark]: Boogie Preprocessor took 13.52ms. Allocated memory is still 115.3MB. Free memory was 93.2MB in the beginning and 92.2MB in the end (delta: 973.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:27:06,680 INFO L158 Benchmark]: RCFGBuilder took 187.86ms. Allocated memory is still 115.3MB. Free memory was 92.2MB in the beginning and 83.5MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 13:27:06,680 INFO L158 Benchmark]: TraceAbstraction took 487.57ms. Allocated memory is still 115.3MB. Free memory was 82.8MB in the beginning and 82.0MB in the end (delta: 864.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:27:06,680 INFO L158 Benchmark]: Witness Printer took 3.53ms. Allocated memory is still 115.3MB. Free memory was 82.0MB in the beginning and 81.7MB in the end (delta: 285.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:27:06,686 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 86.0MB. Free memory is still 64.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 172.51ms. Allocated memory was 86.0MB in the beginning and 115.3MB in the end (delta: 29.4MB). Free memory was 47.9MB in the beginning and 94.5MB in the end (delta: -46.6MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.54ms. Allocated memory is still 115.3MB. Free memory was 94.5MB in the beginning and 93.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.52ms. Allocated memory is still 115.3MB. Free memory was 93.2MB in the beginning and 92.2MB in the end (delta: 973.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 187.86ms. Allocated memory is still 115.3MB. Free memory was 92.2MB in the beginning and 83.5MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 487.57ms. Allocated memory is still 115.3MB. Free memory was 82.8MB in the beginning and 82.0MB in the end (delta: 864.9kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.53ms. Allocated memory is still 115.3MB. Free memory was 82.0MB in the beginning and 81.7MB in the end (delta: 285.7kB). 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: 38]: 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 37, overapproximation of someBinaryArithmeticFLOAToperation at line 35. Possible FailurePath: [L29] float IN = __VERIFIER_nondet_float(); [L30] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L24] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L30] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L32] float x = IN; [L34-L35] 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] [L37] COND TRUE !(result >= 0.0f && result < 1.39f) VAL [IN=49, x=49] [L38] reach_error() VAL [IN=49, x=49] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 10 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, 10 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=11occurred 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, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 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 [2022-07-19 13:27:06,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/square_1.i -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 14ef7b4695081d3e006bc43e895bc31c74bdc7ec3cae3cedfb7a87dd07fa43f0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 13:27:08,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 13:27:08,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 13:27:08,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 13:27:08,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 13:27:08,678 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 13:27:08,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 13:27:08,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 13:27:08,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 13:27:08,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 13:27:08,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 13:27:08,700 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 13:27:08,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 13:27:08,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 13:27:08,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 13:27:08,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 13:27:08,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 13:27:08,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 13:27:08,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 13:27:08,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 13:27:08,716 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 13:27:08,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 13:27:08,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 13:27:08,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 13:27:08,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 13:27:08,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 13:27:08,725 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 13:27:08,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 13:27:08,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 13:27:08,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 13:27:08,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 13:27:08,728 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 13:27:08,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 13:27:08,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 13:27:08,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 13:27:08,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 13:27:08,732 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 13:27:08,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 13:27:08,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 13:27:08,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 13:27:08,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 13:27:08,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 13:27:08,736 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-19 13:27:08,763 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 13:27:08,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 13:27:08,764 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 13:27:08,764 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 13:27:08,765 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 13:27:08,765 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 13:27:08,766 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 13:27:08,766 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 13:27:08,766 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 13:27:08,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 13:27:08,767 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 13:27:08,767 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 13:27:08,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 13:27:08,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 13:27:08,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 13:27:08,768 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 13:27:08,768 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 13:27:08,768 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 13:27:08,769 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 13:27:08,769 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 13:27:08,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 13:27:08,769 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 13:27:08,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 13:27:08,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 13:27:08,770 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 13:27:08,770 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 13:27:08,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:27:08,770 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 13:27:08,771 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 13:27:08,771 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 13:27:08,771 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 13:27:08,771 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 13:27:08,771 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 13:27:08,772 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 13:27:08,772 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 13:27:08,772 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 13:27:08,772 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14ef7b4695081d3e006bc43e895bc31c74bdc7ec3cae3cedfb7a87dd07fa43f0 [2022-07-19 13:27:09,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 13:27:09,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 13:27:09,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 13:27:09,094 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 13:27:09,095 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 13:27:09,096 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/square_1.i [2022-07-19 13:27:09,154 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbb5b9f63/6052f4efad7747c6849de06f48c3e80e/FLAGc547abae5 [2022-07-19 13:27:09,594 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 13:27:09,595 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/square_1.i [2022-07-19 13:27:09,601 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbb5b9f63/6052f4efad7747c6849de06f48c3e80e/FLAGc547abae5 [2022-07-19 13:27:10,007 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbb5b9f63/6052f4efad7747c6849de06f48c3e80e [2022-07-19 13:27:10,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 13:27:10,012 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 13:27:10,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 13:27:10,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 13:27:10,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 13:27:10,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:27:10" (1/1) ... [2022-07-19 13:27:10,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a3aac91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:27:10, skipping insertion in model container [2022-07-19 13:27:10,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:27:10" (1/1) ... [2022-07-19 13:27:10,030 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 13:27:10,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 13:27:10,178 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/floats-cdfpl/square_1.i[1626,1639] [2022-07-19 13:27:10,181 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:27:10,191 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 13:27:10,204 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/floats-cdfpl/square_1.i[1626,1639] [2022-07-19 13:27:10,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:27:10,246 INFO L208 MainTranslator]: Completed translation [2022-07-19 13:27:10,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:27:10 WrapperNode [2022-07-19 13:27:10,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 13:27:10,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 13:27:10,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 13:27:10,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 13:27:10,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:27:10" (1/1) ... [2022-07-19 13:27:10,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:27:10" (1/1) ... [2022-07-19 13:27:10,276 INFO L137 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 22 [2022-07-19 13:27:10,277 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 13:27:10,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 13:27:10,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 13:27:10,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 13:27:10,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:27:10" (1/1) ... [2022-07-19 13:27:10,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:27:10" (1/1) ... [2022-07-19 13:27:10,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:27:10" (1/1) ... [2022-07-19 13:27:10,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:27:10" (1/1) ... [2022-07-19 13:27:10,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:27:10" (1/1) ... [2022-07-19 13:27:10,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:27:10" (1/1) ... [2022-07-19 13:27:10,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:27:10" (1/1) ... [2022-07-19 13:27:10,318 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 13:27:10,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 13:27:10,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 13:27:10,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 13:27:10,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:27:10" (1/1) ... [2022-07-19 13:27:10,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:27:10,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:27:10,349 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) [2022-07-19 13:27:10,375 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 [2022-07-19 13:27:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 13:27:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-19 13:27:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 13:27:10,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 13:27:10,454 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 13:27:10,456 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 13:27:12,640 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 13:27:12,645 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 13:27:12,645 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 13:27:12,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:27:12 BoogieIcfgContainer [2022-07-19 13:27:12,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 13:27:12,648 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 13:27:12,648 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 13:27:12,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 13:27:12,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 01:27:10" (1/3) ... [2022-07-19 13:27:12,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@190bcf1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:27:12, skipping insertion in model container [2022-07-19 13:27:12,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:27:10" (2/3) ... [2022-07-19 13:27:12,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@190bcf1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:27:12, skipping insertion in model container [2022-07-19 13:27:12,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:27:12" (3/3) ... [2022-07-19 13:27:12,655 INFO L111 eAbstractionObserver]: Analyzing ICFG square_1.i [2022-07-19 13:27:12,673 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 13:27:12,674 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 13:27:12,722 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 13:27:12,731 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2bd61dc2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1b2d9f1b [2022-07-19 13:27:12,731 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 13:27:12,735 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:27:12,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-19 13:27:12,744 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:27:12,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-19 13:27:12,749 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:27:12,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:27:12,754 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2022-07-19 13:27:12,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:27:12,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116735681] [2022-07-19 13:27:12,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:27:12,766 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:27:12,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:27:12,768 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) [2022-07-19 13:27:12,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-19 13:27:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:27:13,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-19 13:27:13,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:27:13,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:27:13,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 13:27:13,195 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 13:27:13,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116735681] [2022-07-19 13:27:13,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2116735681] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:27:13,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:27:13,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 13:27:13,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53602361] [2022-07-19 13:27:13,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:27:13,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 13:27:13,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 13:27:13,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 13:27:13,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 13:27:13,226 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-07-19 13:27:13,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:27:13,237 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-07-19 13:27:13,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 13:27:13,239 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2022-07-19 13:27:13,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:27:13,245 INFO L225 Difference]: With dead ends: 19 [2022-07-19 13:27:13,245 INFO L226 Difference]: Without dead ends: 7 [2022-07-19 13:27:13,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 13:27:13,250 INFO L413 NwaCegarLoop]: 10 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, 10 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 [2022-07-19 13:27:13,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 13:27:13,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2022-07-19 13:27:13,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2022-07-19 13:27:13,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 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) [2022-07-19 13:27:13,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2022-07-19 13:27:13,275 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2022-07-19 13:27:13,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:27:13,275 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2022-07-19 13:27:13,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-07-19 13:27:13,276 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2022-07-19 13:27:13,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-19 13:27:13,276 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:27:13,277 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-19 13:27:13,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-19 13:27:13,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 13:27:13,492 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:27:13,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:27:13,492 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2022-07-19 13:27:13,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:27:13,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1067576975] [2022-07-19 13:27:13,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:27:13,493 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:27:13,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:27:13,495 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) [2022-07-19 13:27:13,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-19 13:27:34,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 13:27:34,425 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 13:27:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 13:27:36,868 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-19 13:27:36,868 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 13:27:36,870 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 13:27:36,895 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-07-19 13:27:37,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 13:27:37,074 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-19 13:27:37,077 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 13:27:37,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 01:27:37 BoogieIcfgContainer [2022-07-19 13:27:37,094 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 13:27:37,095 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 13:27:37,095 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 13:27:37,095 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 13:27:37,096 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:27:12" (3/4) ... [2022-07-19 13:27:37,097 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-19 13:27:37,135 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 13:27:37,139 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 13:27:37,140 INFO L158 Benchmark]: Toolchain (without parser) took 27127.77ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 36.1MB in the beginning and 51.0MB in the end (delta: -14.9MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. [2022-07-19 13:27:37,140 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 56.6MB. Free memory was 38.9MB in the beginning and 38.9MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:27:37,140 INFO L158 Benchmark]: CACSL2BoogieTranslator took 234.06ms. Allocated memory is still 56.6MB. Free memory was 35.9MB in the beginning and 40.7MB in the end (delta: -4.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-19 13:27:37,141 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.99ms. Allocated memory is still 56.6MB. Free memory was 40.7MB in the beginning and 39.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:27:37,141 INFO L158 Benchmark]: Boogie Preprocessor took 41.60ms. Allocated memory is still 56.6MB. Free memory was 39.2MB in the beginning and 38.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:27:37,142 INFO L158 Benchmark]: RCFGBuilder took 2326.37ms. Allocated memory is still 56.6MB. Free memory was 38.0MB in the beginning and 30.0MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 13:27:37,142 INFO L158 Benchmark]: TraceAbstraction took 24446.62ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 29.5MB in the beginning and 34.2MB in the end (delta: -4.7MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2022-07-19 13:27:37,142 INFO L158 Benchmark]: Witness Printer took 44.07ms. Allocated memory is still 69.2MB. Free memory was 34.2MB in the beginning and 51.0MB in the end (delta: -16.8MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. [2022-07-19 13:27:37,144 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 56.6MB. Free memory was 38.9MB in the beginning and 38.9MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 234.06ms. Allocated memory is still 56.6MB. Free memory was 35.9MB in the beginning and 40.7MB in the end (delta: -4.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.99ms. Allocated memory is still 56.6MB. Free memory was 40.7MB in the beginning and 39.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 41.60ms. Allocated memory is still 56.6MB. Free memory was 39.2MB in the beginning and 38.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 2326.37ms. Allocated memory is still 56.6MB. Free memory was 38.0MB in the beginning and 30.0MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 24446.62ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 29.5MB in the beginning and 34.2MB in the end (delta: -4.7MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * Witness Printer took 44.07ms. Allocated memory is still 69.2MB. Free memory was 34.2MB in the beginning and 51.0MB in the end (delta: -16.8MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 38]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L29] float IN = __VERIFIER_nondet_float(); [L30] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L24] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L30] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L32] float x = IN; [L34-L35] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=0.9999995827674866, result=1.398437261581421, x=0.9999995827674866] [L37] COND TRUE !(result >= 0.0f && result < 1.39f) VAL [IN=0.9999995827674866, result=1.398437261581421, x=0.9999995827674866] [L38] reach_error() VAL [IN=0.9999995827674866, result=1.398437261581421, x=0.9999995827674866] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 24.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 10 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, 10 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 21.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 20 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-07-19 13:27:37,211 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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE