./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_7+soft_float_5a.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 aff0e850a0570cb9360bb6d36c5ca43ce702912f0a3611fc5fda11d0dcbb5bf1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:05:52,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:05:52,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:05:52,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:05:52,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:05:52,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:05:52,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:05:52,484 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:05:52,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:05:52,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:05:52,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:05:52,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:05:52,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:05:52,492 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:05:52,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:05:52,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:05:52,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:05:52,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:05:52,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:05:52,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:05:52,504 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:05:52,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:05:52,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:05:52,505 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:05:52,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:05:52,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:05:52,511 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:05:52,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:05:52,513 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:05:52,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:05:52,514 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:05:52,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:05:52,516 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:05:52,516 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:05:52,517 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:05:52,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:05:52,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:05:52,518 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:05:52,518 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:05:52,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:05:52,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:05:52,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:05:52,521 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:05:52,543 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:05:52,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:05:52,544 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:05:52,544 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:05:52,544 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:05:52,544 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:05:52,545 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:05:52,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:05:52,545 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:05:52,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:05:52,546 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:05:52,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:05:52,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:05:52,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:05:52,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:05:52,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:05:52,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:05:52,547 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:05:52,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:05:52,547 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:05:52,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:05:52,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:05:52,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:05:52,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:05:52,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:05:52,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:05:52,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:05:52,548 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:05:52,548 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:05:52,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:05:52,549 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:05:52,549 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:05:52,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:05:52,549 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aff0e850a0570cb9360bb6d36c5ca43ce702912f0a3611fc5fda11d0dcbb5bf1 [2022-07-22 21:05:52,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:05:52,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:05:52,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:05:52,748 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:05:52,749 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:05:52,750 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c [2022-07-22 21:05:52,807 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39fd85937/ddc43d60b6db45c5ac4ee94a12cdf8e2/FLAG3f0b853d7 [2022-07-22 21:05:53,189 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:05:53,193 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c [2022-07-22 21:05:53,203 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39fd85937/ddc43d60b6db45c5ac4ee94a12cdf8e2/FLAG3f0b853d7 [2022-07-22 21:05:53,214 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39fd85937/ddc43d60b6db45c5ac4ee94a12cdf8e2 [2022-07-22 21:05:53,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:05:53,217 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:05:53,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:05:53,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:05:53,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:05:53,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:05:53" (1/1) ... [2022-07-22 21:05:53,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d3b9dfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:05:53, skipping insertion in model container [2022-07-22 21:05:53,223 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:05:53" (1/1) ... [2022-07-22 21:05:53,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:05:53,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:05:53,424 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_7+soft_float_5a.c.cil.c[1995,2008] [2022-07-22 21:05:53,428 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_7+soft_float_5a.c.cil.c[2364,2377] [2022-07-22 21:05:53,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:05:53,488 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:05:53,503 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_7+soft_float_5a.c.cil.c[1995,2008] [2022-07-22 21:05:53,506 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_7+soft_float_5a.c.cil.c[2364,2377] [2022-07-22 21:05:53,541 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:05:53,552 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:05:53,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:05:53 WrapperNode [2022-07-22 21:05:53,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:05:53,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:05:53,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:05:53,553 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:05:53,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:05:53" (1/1) ... [2022-07-22 21:05:53,577 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:05:53" (1/1) ... [2022-07-22 21:05:53,605 INFO L137 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 199 [2022-07-22 21:05:53,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:05:53,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:05:53,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:05:53,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:05:53,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:05:53" (1/1) ... [2022-07-22 21:05:53,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:05:53" (1/1) ... [2022-07-22 21:05:53,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:05:53" (1/1) ... [2022-07-22 21:05:53,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:05:53" (1/1) ... [2022-07-22 21:05:53,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:05:53" (1/1) ... [2022-07-22 21:05:53,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:05:53" (1/1) ... [2022-07-22 21:05:53,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:05:53" (1/1) ... [2022-07-22 21:05:53,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:05:53,649 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:05:53,649 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:05:53,649 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:05:53,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:05:53" (1/1) ... [2022-07-22 21:05:53,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:05:53,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:05:53,686 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) [2022-07-22 21:05:53,691 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 [2022-07-22 21:05:53,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:05:53,727 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-22 21:05:53,727 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-22 21:05:53,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:05:53,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:05:53,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:05:53,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 21:05:53,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 21:05:53,826 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:05:53,828 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:05:54,159 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:05:54,168 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:05:54,170 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-22 21:05:54,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:05:54 BoogieIcfgContainer [2022-07-22 21:05:54,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:05:54,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:05:54,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:05:54,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:05:54,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:05:53" (1/3) ... [2022-07-22 21:05:54,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@144a1582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:05:54, skipping insertion in model container [2022-07-22 21:05:54,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:05:53" (2/3) ... [2022-07-22 21:05:54,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@144a1582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:05:54, skipping insertion in model container [2022-07-22 21:05:54,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:05:54" (3/3) ... [2022-07-22 21:05:54,179 INFO L111 eAbstractionObserver]: Analyzing ICFG square_7+soft_float_5a.c.cil.c [2022-07-22 21:05:54,189 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:05:54,189 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 21:05:54,224 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:05:54,229 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@18b9d96a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@f8cc8f1 [2022-07-22 21:05:54,229 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 21:05:54,232 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 87 states have (on average 1.6896551724137931) internal successors, (147), 90 states have internal predecessors, (147), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-22 21:05:54,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-22 21:05:54,236 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 21:05:54,237 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:05:54,237 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 21:05:54,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:05:54,240 INFO L85 PathProgramCache]: Analyzing trace with hash -685161840, now seen corresponding path program 1 times [2022-07-22 21:05:54,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:05:54,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261625987] [2022-07-22 21:05:54,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:05:54,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:05:54,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:05:54,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:05:54,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:05:54,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261625987] [2022-07-22 21:05:54,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261625987] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:05:54,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:05:54,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 21:05:54,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170203090] [2022-07-22 21:05:54,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:05:54,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 21:05:54,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:05:54,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 21:05:54,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 21:05:54,345 INFO L87 Difference]: Start difference. First operand has 97 states, 87 states have (on average 1.6896551724137931) internal successors, (147), 90 states have internal predecessors, (147), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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) [2022-07-22 21:05:54,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 21:05:54,365 INFO L93 Difference]: Finished difference Result 189 states and 311 transitions. [2022-07-22 21:05:54,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 21:05:54,369 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 [2022-07-22 21:05:54,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 21:05:54,375 INFO L225 Difference]: With dead ends: 189 [2022-07-22 21:05:54,375 INFO L226 Difference]: Without dead ends: 88 [2022-07-22 21:05:54,378 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 [2022-07-22 21:05:54,382 INFO L413 NwaCegarLoop]: 140 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, 140 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 [2022-07-22 21:05:54,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 21:05:54,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-07-22 21:05:54,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-07-22 21:05:54,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 80 states have (on average 1.5) internal successors, (120), 81 states have internal predecessors, (120), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-22 21:05:54,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 129 transitions. [2022-07-22 21:05:54,426 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 129 transitions. Word has length 7 [2022-07-22 21:05:54,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 21:05:54,426 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 129 transitions. [2022-07-22 21:05:54,427 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) [2022-07-22 21:05:54,427 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 129 transitions. [2022-07-22 21:05:54,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-22 21:05:54,428 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 21:05:54,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:05:54,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:05:54,429 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 21:05:54,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:05:54,430 INFO L85 PathProgramCache]: Analyzing trace with hash -685102258, now seen corresponding path program 1 times [2022-07-22 21:05:54,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:05:54,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521552273] [2022-07-22 21:05:54,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:05:54,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:05:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:05:54,457 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 21:05:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:05:54,492 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 21:05:54,493 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 21:05:54,494 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-22 21:05:54,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-22 21:05:54,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:05:54,498 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-22 21:05:54,500 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 21:05:54,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 09:05:54 BoogieIcfgContainer [2022-07-22 21:05:54,519 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 21:05:54,520 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 21:05:54,520 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 21:05:54,520 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 21:05:54,521 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:05:54" (3/4) ... [2022-07-22 21:05:54,523 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-22 21:05:54,523 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 21:05:54,524 INFO L158 Benchmark]: Toolchain (without parser) took 1306.02ms. Allocated memory was 86.0MB in the beginning and 132.1MB in the end (delta: 46.1MB). Free memory was 53.1MB in the beginning and 53.5MB in the end (delta: -450.0kB). Peak memory consumption was 45.6MB. Max. memory is 16.1GB. [2022-07-22 21:05:54,524 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 86.0MB. Free memory was 41.7MB in the beginning and 41.7MB in the end (delta: 41.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 21:05:54,526 INFO L158 Benchmark]: CACSL2BoogieTranslator took 332.96ms. Allocated memory was 86.0MB in the beginning and 132.1MB in the end (delta: 46.1MB). Free memory was 52.8MB in the beginning and 103.2MB in the end (delta: -50.5MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2022-07-22 21:05:54,527 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.40ms. Allocated memory is still 132.1MB. Free memory was 103.2MB in the beginning and 101.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:05:54,528 INFO L158 Benchmark]: Boogie Preprocessor took 42.76ms. Allocated memory is still 132.1MB. Free memory was 101.2MB in the beginning and 99.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:05:54,529 INFO L158 Benchmark]: RCFGBuilder took 523.37ms. Allocated memory is still 132.1MB. Free memory was 99.1MB in the beginning and 79.4MB in the end (delta: 19.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-07-22 21:05:54,529 INFO L158 Benchmark]: TraceAbstraction took 344.81ms. Allocated memory is still 132.1MB. Free memory was 78.7MB in the beginning and 53.5MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-07-22 21:05:54,529 INFO L158 Benchmark]: Witness Printer took 3.02ms. Allocated memory is still 132.1MB. Free memory is still 53.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 21:05:54,534 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 86.0MB. Free memory was 41.7MB in the beginning and 41.7MB in the end (delta: 41.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 332.96ms. Allocated memory was 86.0MB in the beginning and 132.1MB in the end (delta: 46.1MB). Free memory was 52.8MB in the beginning and 103.2MB in the end (delta: -50.5MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.40ms. Allocated memory is still 132.1MB. Free memory was 103.2MB in the beginning and 101.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.76ms. Allocated memory is still 132.1MB. Free memory was 101.2MB in the beginning and 99.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 523.37ms. Allocated memory is still 132.1MB. Free memory was 99.1MB in the beginning and 79.4MB in the end (delta: 19.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 344.81ms. Allocated memory is still 132.1MB. Free memory was 78.7MB in the beginning and 53.5MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 3.02ms. Allocated memory is still 132.1MB. Free memory is still 53.5MB. 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: [L322] COND TRUE __VERIFIER_nondet_int() [L323] 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 < 1.4f) 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 3 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, 140 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, 140 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 [2022-07-22 21:05:54,568 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_7+soft_float_5a.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 aff0e850a0570cb9360bb6d36c5ca43ce702912f0a3611fc5fda11d0dcbb5bf1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:05:56,176 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:05:56,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:05:56,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:05:56,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:05:56,212 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:05:56,214 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:05:56,216 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:05:56,218 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:05:56,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:05:56,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:05:56,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:05:56,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:05:56,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:05:56,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:05:56,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:05:56,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:05:56,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:05:56,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:05:56,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:05:56,238 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:05:56,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:05:56,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:05:56,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:05:56,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:05:56,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:05:56,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:05:56,247 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:05:56,248 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:05:56,248 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:05:56,249 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:05:56,249 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:05:56,250 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:05:56,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:05:56,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:05:56,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:05:56,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:05:56,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:05:56,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:05:56,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:05:56,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:05:56,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:05:56,258 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-22 21:05:56,284 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:05:56,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:05:56,285 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:05:56,285 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:05:56,286 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:05:56,286 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:05:56,287 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:05:56,287 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:05:56,287 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:05:56,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:05:56,288 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:05:56,288 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:05:56,288 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:05:56,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:05:56,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:05:56,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:05:56,289 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-22 21:05:56,289 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-22 21:05:56,289 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-22 21:05:56,289 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:05:56,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:05:56,290 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:05:56,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:05:56,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:05:56,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:05:56,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:05:56,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:05:56,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:05:56,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:05:56,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:05:56,291 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-22 21:05:56,291 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-22 21:05:56,291 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:05:56,292 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:05:56,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:05:56,292 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-22 21:05:56,292 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aff0e850a0570cb9360bb6d36c5ca43ce702912f0a3611fc5fda11d0dcbb5bf1 [2022-07-22 21:05:56,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:05:56,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:05:56,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:05:56,531 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:05:56,532 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:05:56,533 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c [2022-07-22 21:05:56,576 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6fa47237/9ab5743272764718aec064bd662db518/FLAGa936e9517 [2022-07-22 21:05:56,959 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:05:56,959 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_7+soft_float_5a.c.cil.c [2022-07-22 21:05:56,965 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6fa47237/9ab5743272764718aec064bd662db518/FLAGa936e9517 [2022-07-22 21:05:56,973 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6fa47237/9ab5743272764718aec064bd662db518 [2022-07-22 21:05:56,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:05:56,978 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:05:56,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:05:56,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:05:56,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:05:56,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:05:56" (1/1) ... [2022-07-22 21:05:56,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b0fae77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:05:56, skipping insertion in model container [2022-07-22 21:05:56,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:05:56" (1/1) ... [2022-07-22 21:05:56,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:05:57,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:05:57,129 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_7+soft_float_5a.c.cil.c[1995,2008] [2022-07-22 21:05:57,133 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_7+soft_float_5a.c.cil.c[2364,2377] [2022-07-22 21:05:57,185 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:05:57,201 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:05:57,220 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_7+soft_float_5a.c.cil.c[1995,2008] [2022-07-22 21:05:57,222 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_7+soft_float_5a.c.cil.c[2364,2377] [2022-07-22 21:05:57,249 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:05:57,262 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:05:57,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:05:57 WrapperNode [2022-07-22 21:05:57,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:05:57,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:05:57,264 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:05:57,264 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:05:57,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:05:57" (1/1) ... [2022-07-22 21:05:57,285 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:05:57" (1/1) ... [2022-07-22 21:05:57,307 INFO L137 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 129 [2022-07-22 21:05:57,307 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:05:57,308 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:05:57,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:05:57,308 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:05:57,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:05:57" (1/1) ... [2022-07-22 21:05:57,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:05:57" (1/1) ... [2022-07-22 21:05:57,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:05:57" (1/1) ... [2022-07-22 21:05:57,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:05:57" (1/1) ... [2022-07-22 21:05:57,338 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:05:57" (1/1) ... [2022-07-22 21:05:57,347 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:05:57" (1/1) ... [2022-07-22 21:05:57,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:05:57" (1/1) ... [2022-07-22 21:05:57,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:05:57,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:05:57,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:05:57,359 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:05:57,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:05:57" (1/1) ... [2022-07-22 21:05:57,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:05:57,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:05:57,382 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) [2022-07-22 21:05:57,388 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 [2022-07-22 21:05:57,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:05:57,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-22 21:05:57,410 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-22 21:05:57,410 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-22 21:05:57,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:05:57,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:05:57,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 21:05:57,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 21:05:57,523 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:05:57,524 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:05:59,894 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:05:59,899 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:05:59,899 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-22 21:05:59,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:05:59 BoogieIcfgContainer [2022-07-22 21:05:59,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:05:59,901 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:05:59,901 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:05:59,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:05:59,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:05:56" (1/3) ... [2022-07-22 21:05:59,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@553c4bc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:05:59, skipping insertion in model container [2022-07-22 21:05:59,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:05:57" (2/3) ... [2022-07-22 21:05:59,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@553c4bc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:05:59, skipping insertion in model container [2022-07-22 21:05:59,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:05:59" (3/3) ... [2022-07-22 21:05:59,911 INFO L111 eAbstractionObserver]: Analyzing ICFG square_7+soft_float_5a.c.cil.c [2022-07-22 21:05:59,922 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:05:59,923 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 21:05:59,953 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:05:59,957 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@173d2758, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@f6bb238 [2022-07-22 21:05:59,958 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 21:05:59,961 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-22 21:05:59,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-22 21:05:59,965 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 21:05:59,966 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:05:59,966 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 21:05:59,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:05:59,970 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-07-22 21:05:59,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 21:05:59,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [870806574] [2022-07-22 21:05:59,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:05:59,978 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 21:05:59,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 21:05:59,980 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) [2022-07-22 21:05:59,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-22 21:06:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:06:00,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-22 21:06:00,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:06:00,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:06:00,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 21:06:00,358 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 21:06:00,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [870806574] [2022-07-22 21:06:00,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [870806574] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:06:00,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:06:00,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 21:06:00,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318745321] [2022-07-22 21:06:00,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:06:00,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 21:06:00,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 21:06:00,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 21:06:00,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 21:06:00,383 INFO L87 Difference]: Start difference. First operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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) [2022-07-22 21:06:00,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 21:06:00,400 INFO L93 Difference]: Finished difference Result 117 states and 175 transitions. [2022-07-22 21:06:00,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 21:06:00,413 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 [2022-07-22 21:06:00,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 21:06:00,418 INFO L225 Difference]: With dead ends: 117 [2022-07-22 21:06:00,418 INFO L226 Difference]: Without dead ends: 52 [2022-07-22 21:06:00,425 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 [2022-07-22 21:06:00,427 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 [2022-07-22 21:06:00,428 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] [2022-07-22 21:06:00,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-07-22 21:06:00,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-07-22 21:06:00,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 45 states have internal predecessors, (62), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-22 21:06:00,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2022-07-22 21:06:00,454 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 7 [2022-07-22 21:06:00,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 21:06:00,455 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2022-07-22 21:06:00,455 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) [2022-07-22 21:06:00,455 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2022-07-22 21:06:00,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-22 21:06:00,455 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 21:06:00,456 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:06:00,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-22 21:06:00,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 21:06:00,672 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 21:06:00,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:06:00,673 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-07-22 21:06:00,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 21:06:00,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358568702] [2022-07-22 21:06:00,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:06:00,674 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 21:06:00,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 21:06:00,675 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) [2022-07-22 21:06:00,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process