./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_5+soft_float_4-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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_5+soft_float_4-3a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b6a662b89b8e960556d1d617930ac0e98fa0737a1c5851457e8cd9283d13df1d --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:43:50,977 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:43:50,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:43:51,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:43:51,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:43:51,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:43:51,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:43:51,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:43:51,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:43:51,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:43:51,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:43:51,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:43:51,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:43:51,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:43:51,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:43:51,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:43:51,041 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:43:51,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:43:51,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:43:51,043 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:43:51,047 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:43:51,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:43:51,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:43:51,050 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:43:51,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:43:51,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:43:51,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:43:51,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:43:51,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:43:51,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:43:51,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:43:51,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:43:51,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:43:51,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:43:51,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:43:51,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:43:51,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:43:51,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:43:51,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:43:51,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:43:51,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:43:51,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:43:51,070 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 09:43:51,096 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:43:51,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:43:51,097 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:43:51,097 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:43:51,098 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:43:51,098 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:43:51,099 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:43:51,099 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:43:51,099 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:43:51,100 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:43:51,100 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:43:51,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 09:43:51,100 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:43:51,101 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:43:51,101 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:43:51,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:43:51,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:43:51,101 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:43:51,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:43:51,102 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:43:51,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:43:51,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:43:51,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:43:51,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:43:51,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:43:51,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:43:51,103 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:43:51,103 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:43:51,103 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 09:43:51,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 09:43:51,104 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:43:51,104 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:43:51,104 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:43:51,104 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6a662b89b8e960556d1d617930ac0e98fa0737a1c5851457e8cd9283d13df1d [2022-07-12 09:43:51,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:43:51,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:43:51,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:43:51,319 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:43:51,320 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:43:51,321 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_5+soft_float_4-3a.c.cil.c [2022-07-12 09:43:51,386 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fd1a38a4/587cf831b9f14b3f8c89dba8c7ccb1cc/FLAGa41ef3196 [2022-07-12 09:43:51,851 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:43:51,852 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_5+soft_float_4-3a.c.cil.c [2022-07-12 09:43:51,860 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fd1a38a4/587cf831b9f14b3f8c89dba8c7ccb1cc/FLAGa41ef3196 [2022-07-12 09:43:52,218 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fd1a38a4/587cf831b9f14b3f8c89dba8c7ccb1cc [2022-07-12 09:43:52,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:43:52,222 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:43:52,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:43:52,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:43:52,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:43:52,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:43:52" (1/1) ... [2022-07-12 09:43:52,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21041263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:43:52, skipping insertion in model container [2022-07-12 09:43:52,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:43:52" (1/1) ... [2022-07-12 09:43:52,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:43:52,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:43:52,398 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_5+soft_float_4-3a.c.cil.c[1998,2011] [2022-07-12 09:43:52,402 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_5+soft_float_4-3a.c.cil.c[2367,2380] [2022-07-12 09:43:52,443 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:43:52,450 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:43:52,462 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_5+soft_float_4-3a.c.cil.c[1998,2011] [2022-07-12 09:43:52,463 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_5+soft_float_4-3a.c.cil.c[2367,2380] [2022-07-12 09:43:52,490 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:43:52,501 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:43:52,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:43:52 WrapperNode [2022-07-12 09:43:52,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:43:52,503 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:43:52,503 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:43:52,503 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:43:52,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:43:52" (1/1) ... [2022-07-12 09:43:52,526 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:43:52" (1/1) ... [2022-07-12 09:43:52,544 INFO L137 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2022-07-12 09:43:52,545 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:43:52,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:43:52,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:43:52,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:43:52,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:43:52" (1/1) ... [2022-07-12 09:43:52,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:43:52" (1/1) ... [2022-07-12 09:43:52,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:43:52" (1/1) ... [2022-07-12 09:43:52,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:43:52" (1/1) ... [2022-07-12 09:43:52,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:43:52" (1/1) ... [2022-07-12 09:43:52,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:43:52" (1/1) ... [2022-07-12 09:43:52,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:43:52" (1/1) ... [2022-07-12 09:43:52,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:43:52,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:43:52,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:43:52,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:43:52,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:43:52" (1/1) ... [2022-07-12 09:43:52,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:43:52,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:43:52,640 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 09:43:52,661 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 [2022-07-12 09:43:52,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:43:52,686 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-12 09:43:52,686 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-12 09:43:52,686 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2022-07-12 09:43:52,687 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2022-07-12 09:43:52,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 09:43:52,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:43:52,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:43:52,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 09:43:52,687 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 09:43:52,753 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:43:52,754 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:43:53,056 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:43:53,063 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:43:53,063 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 09:43:53,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:43:53 BoogieIcfgContainer [2022-07-12 09:43:53,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:43:53,071 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:43:53,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:43:53,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:43:53,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:43:52" (1/3) ... [2022-07-12 09:43:53,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44827d84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:43:53, skipping insertion in model container [2022-07-12 09:43:53,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:43:52" (2/3) ... [2022-07-12 09:43:53,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44827d84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:43:53, skipping insertion in model container [2022-07-12 09:43:53,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:43:53" (3/3) ... [2022-07-12 09:43:53,077 INFO L111 eAbstractionObserver]: Analyzing ICFG square_5+soft_float_4-3a.c.cil.c [2022-07-12 09:43:53,092 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:43:53,092 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 09:43:53,137 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:43:53,143 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@74c29eab, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@78e65107 [2022-07-12 09:43:53,144 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 09:43:53,148 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 82 states have (on average 1.670731707317073) internal successors, (137), 84 states have internal predecessors, (137), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-12 09:43:53,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 09:43:53,154 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:43:53,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:43:53,155 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:43:53,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:43:53,160 INFO L85 PathProgramCache]: Analyzing trace with hash -685161840, now seen corresponding path program 1 times [2022-07-12 09:43:53,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:43:53,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295875623] [2022-07-12 09:43:53,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:43:53,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:43:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:43:53,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:43:53,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:43:53,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295875623] [2022-07-12 09:43:53,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295875623] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:43:53,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:43:53,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 09:43:53,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876611551] [2022-07-12 09:43:53,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:43:53,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 09:43:53,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:43:53,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 09:43:53,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 09:43:53,312 INFO L87 Difference]: Start difference. First operand has 97 states, 82 states have (on average 1.670731707317073) internal successors, (137), 84 states have internal predecessors, (137), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:43:53,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:43:53,342 INFO L93 Difference]: Finished difference Result 189 states and 311 transitions. [2022-07-12 09:43:53,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 09:43:53,344 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 [2022-07-12 09:43:53,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:43:53,352 INFO L225 Difference]: With dead ends: 189 [2022-07-12 09:43:53,352 INFO L226 Difference]: Without dead ends: 90 [2022-07-12 09:43:53,356 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 [2022-07-12 09:43:53,359 INFO L413 NwaCegarLoop]: 135 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, 135 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 [2022-07-12 09:43:53,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:43:53,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-07-12 09:43:53,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2022-07-12 09:43:53,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 76 states have (on average 1.4473684210526316) internal successors, (110), 78 states have internal predecessors, (110), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-12 09:43:53,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 127 transitions. [2022-07-12 09:43:53,398 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 127 transitions. Word has length 7 [2022-07-12 09:43:53,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:43:53,399 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 127 transitions. [2022-07-12 09:43:53,399 INFO L496 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) [2022-07-12 09:43:53,399 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 127 transitions. [2022-07-12 09:43:53,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 09:43:53,400 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:43:53,400 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:43:53,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 09:43:53,401 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:43:53,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:43:53,402 INFO L85 PathProgramCache]: Analyzing trace with hash -685102258, now seen corresponding path program 1 times [2022-07-12 09:43:53,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:43:53,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275468900] [2022-07-12 09:43:53,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:43:53,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:43:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 09:43:53,420 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 09:43:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 09:43:53,455 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 09:43:53,456 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 09:43:53,457 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-12 09:43:53,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-12 09:43:53,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 09:43:53,462 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-12 09:43:53,465 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 09:43:53,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 09:43:53 BoogieIcfgContainer [2022-07-12 09:43:53,490 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 09:43:53,491 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 09:43:53,491 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 09:43:53,492 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 09:43:53,492 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:43:53" (3/4) ... [2022-07-12 09:43:53,495 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-12 09:43:53,496 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 09:43:53,498 INFO L158 Benchmark]: Toolchain (without parser) took 1274.20ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 93.0MB in the beginning and 102.3MB in the end (delta: -9.3MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2022-07-12 09:43:53,498 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 119.5MB. Free memory is still 75.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 09:43:53,501 INFO L158 Benchmark]: CACSL2BoogieTranslator took 276.89ms. Allocated memory is still 119.5MB. Free memory was 92.6MB in the beginning and 86.7MB in the end (delta: 6.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 09:43:53,501 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.12ms. Allocated memory is still 119.5MB. Free memory was 86.7MB in the beginning and 85.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 09:43:53,503 INFO L158 Benchmark]: Boogie Preprocessor took 45.67ms. Allocated memory is still 119.5MB. Free memory was 85.0MB in the beginning and 83.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 09:43:53,504 INFO L158 Benchmark]: RCFGBuilder took 478.17ms. Allocated memory is still 119.5MB. Free memory was 83.0MB in the beginning and 65.3MB in the end (delta: 17.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-07-12 09:43:53,504 INFO L158 Benchmark]: TraceAbstraction took 418.93ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 64.5MB in the beginning and 102.7MB in the end (delta: -38.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 09:43:53,505 INFO L158 Benchmark]: Witness Printer took 4.72ms. Allocated memory is still 144.7MB. Free memory was 102.7MB in the beginning and 102.3MB in the end (delta: 381.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 09:43:53,510 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 119.5MB. Free memory is still 75.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 276.89ms. Allocated memory is still 119.5MB. Free memory was 92.6MB in the beginning and 86.7MB in the end (delta: 6.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.12ms. Allocated memory is still 119.5MB. Free memory was 86.7MB in the beginning and 85.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 45.67ms. Allocated memory is still 119.5MB. Free memory was 85.0MB in the beginning and 83.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 478.17ms. Allocated memory is still 119.5MB. Free memory was 83.0MB in the beginning and 65.3MB in the end (delta: 17.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 418.93ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 64.5MB in the beginning and 102.7MB in the end (delta: -38.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.72ms. Allocated memory is still 144.7MB. Free memory was 102.7MB in the beginning and 102.3MB in the end (delta: 381.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L309] COND TRUE __VERIFIER_nondet_int() [L310] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=49, x=49] [L47] COND TRUE !(result >= 0.0f && result < 1.3985f) VAL [IN=49, x=49] [L48] reach_error() VAL [IN=49, x=49] - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 97 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, 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, 135 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, 135 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=97occurred 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 [2022-07-12 09:43:53,555 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_5+soft_float_4-3a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b6a662b89b8e960556d1d617930ac0e98fa0737a1c5851457e8cd9283d13df1d --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:43:55,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:43:55,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:43:55,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:43:55,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:43:55,496 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:43:55,497 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:43:55,507 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:43:55,509 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:43:55,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:43:55,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:43:55,518 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:43:55,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:43:55,521 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:43:55,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:43:55,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:43:55,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:43:55,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:43:55,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:43:55,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:43:55,534 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:43:55,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:43:55,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:43:55,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:43:55,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:43:55,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:43:55,547 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:43:55,547 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:43:55,548 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:43:55,548 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:43:55,549 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:43:55,549 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:43:55,551 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:43:55,552 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:43:55,553 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:43:55,554 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:43:55,554 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:43:55,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:43:55,555 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:43:55,555 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:43:55,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:43:55,557 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:43:55,561 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-12 09:43:55,593 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:43:55,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:43:55,594 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:43:55,595 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:43:55,595 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:43:55,595 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:43:55,596 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:43:55,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:43:55,597 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:43:55,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:43:55,598 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:43:55,598 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:43:55,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:43:55,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:43:55,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:43:55,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:43:55,599 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 09:43:55,599 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 09:43:55,599 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 09:43:55,599 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:43:55,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:43:55,600 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:43:55,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:43:55,600 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:43:55,600 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:43:55,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:43:55,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:43:55,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:43:55,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:43:55,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:43:55,602 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 09:43:55,602 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 09:43:55,602 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:43:55,602 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:43:55,603 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:43:55,603 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 09:43:55,603 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6a662b89b8e960556d1d617930ac0e98fa0737a1c5851457e8cd9283d13df1d [2022-07-12 09:43:55,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:43:55,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:43:55,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:43:55,952 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:43:55,952 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:43:55,954 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_5+soft_float_4-3a.c.cil.c [2022-07-12 09:43:56,003 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96eb92ac3/f4cb4f82039a4527b0ee2beda94388ca/FLAG290759dbb [2022-07-12 09:43:56,455 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:43:56,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_5+soft_float_4-3a.c.cil.c [2022-07-12 09:43:56,468 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96eb92ac3/f4cb4f82039a4527b0ee2beda94388ca/FLAG290759dbb [2022-07-12 09:43:56,841 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96eb92ac3/f4cb4f82039a4527b0ee2beda94388ca [2022-07-12 09:43:56,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:43:56,845 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:43:56,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:43:56,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:43:56,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:43:56,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:43:56" (1/1) ... [2022-07-12 09:43:56,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@332276b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:43:56, skipping insertion in model container [2022-07-12 09:43:56,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:43:56" (1/1) ... [2022-07-12 09:43:56,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:43:56,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:43:57,006 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_5+soft_float_4-3a.c.cil.c[1998,2011] [2022-07-12 09:43:57,010 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_5+soft_float_4-3a.c.cil.c[2367,2380] [2022-07-12 09:43:57,076 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:43:57,086 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:43:57,098 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_5+soft_float_4-3a.c.cil.c[1998,2011] [2022-07-12 09:43:57,099 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_5+soft_float_4-3a.c.cil.c[2367,2380] [2022-07-12 09:43:57,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:43:57,129 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:43:57,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:43:57 WrapperNode [2022-07-12 09:43:57,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:43:57,131 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:43:57,131 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:43:57,131 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:43:57,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:43:57" (1/1) ... [2022-07-12 09:43:57,147 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:43:57" (1/1) ... [2022-07-12 09:43:57,163 INFO L137 Inliner]: procedures = 28, calls = 20, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70 [2022-07-12 09:43:57,164 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:43:57,165 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:43:57,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:43:57,165 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:43:57,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:43:57" (1/1) ... [2022-07-12 09:43:57,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:43:57" (1/1) ... [2022-07-12 09:43:57,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:43:57" (1/1) ... [2022-07-12 09:43:57,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:43:57" (1/1) ... [2022-07-12 09:43:57,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:43:57" (1/1) ... [2022-07-12 09:43:57,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:43:57" (1/1) ... [2022-07-12 09:43:57,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:43:57" (1/1) ... [2022-07-12 09:43:57,221 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:43:57,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:43:57,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:43:57,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:43:57,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:43:57" (1/1) ... [2022-07-12 09:43:57,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:43:57,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:43:57,257 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) [2022-07-12 09:43:57,278 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 [2022-07-12 09:43:57,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:43:57,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-12 09:43:57,296 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-12 09:43:57,297 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-12 09:43:57,297 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2022-07-12 09:43:57,297 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2022-07-12 09:43:57,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:43:57,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:43:57,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 09:43:57,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 09:43:57,394 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:43:57,396 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:43:59,907 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:43:59,913 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:43:59,913 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 09:43:59,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:43:59 BoogieIcfgContainer [2022-07-12 09:43:59,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:43:59,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:43:59,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:43:59,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:43:59,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:43:56" (1/3) ... [2022-07-12 09:43:59,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a43ed53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:43:59, skipping insertion in model container [2022-07-12 09:43:59,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:43:57" (2/3) ... [2022-07-12 09:43:59,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a43ed53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:43:59, skipping insertion in model container [2022-07-12 09:43:59,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:43:59" (3/3) ... [2022-07-12 09:43:59,929 INFO L111 eAbstractionObserver]: Analyzing ICFG square_5+soft_float_4-3a.c.cil.c [2022-07-12 09:43:59,942 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:43:59,943 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 09:44:00,002 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:44:00,008 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@360586d6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5f176c8a [2022-07-12 09:44:00,008 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 09:44:00,012 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 50 states have internal predecessors, (71), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-12 09:44:00,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 09:44:00,018 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:44:00,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:44:00,019 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:44:00,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:44:00,023 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-07-12 09:44:00,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 09:44:00,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112973121] [2022-07-12 09:44:00,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:44:00,035 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 09:44:00,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 09:44:00,043 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) [2022-07-12 09:44:00,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-12 09:44:00,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:44:00,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-12 09:44:00,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:44:00,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:44:00,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:44:00,537 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 09:44:00,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112973121] [2022-07-12 09:44:00,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2112973121] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:44:00,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:44:00,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 09:44:00,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495310100] [2022-07-12 09:44:00,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:44:00,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 09:44:00,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 09:44:00,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 09:44:00,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 09:44:00,594 INFO L87 Difference]: Start difference. First operand has 63 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 50 states have internal predecessors, (71), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:44:00,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:44:00,636 INFO L93 Difference]: Finished difference Result 121 states and 179 transitions. [2022-07-12 09:44:00,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 09:44:00,638 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 [2022-07-12 09:44:00,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:44:00,648 INFO L225 Difference]: With dead ends: 121 [2022-07-12 09:44:00,648 INFO L226 Difference]: Without dead ends: 56 [2022-07-12 09:44:00,652 INFO L412 NwaCegarLoop]: 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 [2022-07-12 09:44:00,659 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:44:00,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:44:00,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-07-12 09:44:00,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-07-12 09:44:00,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 44 states have internal predecessors, (57), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-12 09:44:00,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 74 transitions. [2022-07-12 09:44:00,690 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 74 transitions. Word has length 7 [2022-07-12 09:44:00,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:44:00,691 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 74 transitions. [2022-07-12 09:44:00,691 INFO L496 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) [2022-07-12 09:44:00,691 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 74 transitions. [2022-07-12 09:44:00,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 09:44:00,692 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:44:00,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:44:00,707 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-12 09:44:00,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 09:44:00,893 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:44:00,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:44:00,894 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-07-12 09:44:00,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 09:44:00,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [483680648] [2022-07-12 09:44:00,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:44:00,895 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 09:44:00,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 09:44:00,897 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) [2022-07-12 09:44:00,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process