./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_6+soft_float_4-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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_6+soft_float_4-2a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f32113811de2ab4c3fb74e14d99b17c8b125c39361fe4dfe371ba0cd2a7c43ad --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 02:38:48,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 02:38:48,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 02:38:48,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 02:38:48,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 02:38:48,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 02:38:48,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 02:38:48,558 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 02:38:48,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 02:38:48,564 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 02:38:48,565 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 02:38:48,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 02:38:48,569 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 02:38:48,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 02:38:48,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 02:38:48,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 02:38:48,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 02:38:48,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 02:38:48,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 02:38:48,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 02:38:48,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 02:38:48,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 02:38:48,586 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 02:38:48,587 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 02:38:48,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 02:38:48,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 02:38:48,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 02:38:48,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 02:38:48,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 02:38:48,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 02:38:48,596 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 02:38:48,597 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 02:38:48,598 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 02:38:48,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 02:38:48,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 02:38:48,600 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 02:38:48,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 02:38:48,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 02:38:48,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 02:38:48,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 02:38:48,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 02:38:48,607 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 02:38:48,625 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 02:38:48,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 02:38:48,626 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 02:38:48,626 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 02:38:48,627 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 02:38:48,627 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 02:38:48,627 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 02:38:48,628 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 02:38:48,628 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 02:38:48,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 02:38:48,628 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 02:38:48,628 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 02:38:48,629 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 02:38:48,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 02:38:48,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 02:38:48,629 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 02:38:48,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 02:38:48,630 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 02:38:48,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 02:38:48,630 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 02:38:48,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 02:38:48,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 02:38:48,631 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 02:38:48,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 02:38:48,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:38:48,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 02:38:48,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 02:38:48,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 02:38:48,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 02:38:48,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 02:38:48,636 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 02:38:48,636 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 02:38:48,636 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 02:38:48,636 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f32113811de2ab4c3fb74e14d99b17c8b125c39361fe4dfe371ba0cd2a7c43ad [2021-12-28 02:38:48,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 02:38:48,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 02:38:48,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 02:38:48,956 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 02:38:48,957 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 02:38:48,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_6+soft_float_4-2a.c.cil.c [2021-12-28 02:38:49,021 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed057159b/6a304d528b9649e88894f8427e09d0a0/FLAG86522787d [2021-12-28 02:38:49,416 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 02:38:49,417 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_6+soft_float_4-2a.c.cil.c [2021-12-28 02:38:49,433 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed057159b/6a304d528b9649e88894f8427e09d0a0/FLAG86522787d [2021-12-28 02:38:49,799 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed057159b/6a304d528b9649e88894f8427e09d0a0 [2021-12-28 02:38:49,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 02:38:49,803 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 02:38:49,804 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 02:38:49,804 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 02:38:49,813 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 02:38:49,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:38:49" (1/1) ... [2021-12-28 02:38:49,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14b746b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:49, skipping insertion in model container [2021-12-28 02:38:49,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:38:49" (1/1) ... [2021-12-28 02:38:49,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 02:38:49,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 02:38:50,032 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_6+soft_float_4-2a.c.cil.c[1997,2010] [2021-12-28 02:38:50,037 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_6+soft_float_4-2a.c.cil.c[2391,2404] [2021-12-28 02:38:50,117 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:38:50,124 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 02:38:50,150 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_6+soft_float_4-2a.c.cil.c[1997,2010] [2021-12-28 02:38:50,153 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_6+soft_float_4-2a.c.cil.c[2391,2404] [2021-12-28 02:38:50,179 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:38:50,195 INFO L208 MainTranslator]: Completed translation [2021-12-28 02:38:50,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:50 WrapperNode [2021-12-28 02:38:50,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 02:38:50,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 02:38:50,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 02:38:50,198 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 02:38:50,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:50" (1/1) ... [2021-12-28 02:38:50,223 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:50" (1/1) ... [2021-12-28 02:38:50,248 INFO L137 Inliner]: procedures = 27, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2021-12-28 02:38:50,248 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 02:38:50,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 02:38:50,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 02:38:50,249 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 02:38:50,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:50" (1/1) ... [2021-12-28 02:38:50,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:50" (1/1) ... [2021-12-28 02:38:50,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:50" (1/1) ... [2021-12-28 02:38:50,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:50" (1/1) ... [2021-12-28 02:38:50,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:50" (1/1) ... [2021-12-28 02:38:50,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:50" (1/1) ... [2021-12-28 02:38:50,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:50" (1/1) ... [2021-12-28 02:38:50,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 02:38:50,305 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 02:38:50,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 02:38:50,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 02:38:50,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:50" (1/1) ... [2021-12-28 02:38:50,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:38:50,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 02:38:50,334 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 02:38:50,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 02:38:50,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 02:38:50,380 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-28 02:38:50,380 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-28 02:38:50,380 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-12-28 02:38:50,381 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-12-28 02:38:50,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 02:38:50,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 02:38:50,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 02:38:50,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-28 02:38:50,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-28 02:38:50,472 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 02:38:50,473 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 02:38:50,715 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 02:38:50,720 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 02:38:50,720 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-28 02:38:50,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:38:50 BoogieIcfgContainer [2021-12-28 02:38:50,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 02:38:50,723 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 02:38:50,723 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 02:38:50,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 02:38:50,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 02:38:49" (1/3) ... [2021-12-28 02:38:50,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303ebd5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:38:50, skipping insertion in model container [2021-12-28 02:38:50,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:50" (2/3) ... [2021-12-28 02:38:50,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303ebd5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:38:50, skipping insertion in model container [2021-12-28 02:38:50,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:38:50" (3/3) ... [2021-12-28 02:38:50,734 INFO L111 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_4-2a.c.cil.c [2021-12-28 02:38:50,738 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 02:38:50,739 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-28 02:38:50,791 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 02:38:50,797 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 02:38:50,798 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-28 02:38:50,813 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-28 02:38:50,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-28 02:38:50,817 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:38:50,817 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:38:50,818 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:38:50,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:38:50,824 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-12-28 02:38:50,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:38:50,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849375323] [2021-12-28 02:38:50,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:38:50,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:38:50,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:38:50,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:38:50,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:38:50,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849375323] [2021-12-28 02:38:50,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849375323] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:38:50,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:38:50,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 02:38:50,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856428614] [2021-12-28 02:38:50,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:38:50,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 02:38:50,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:38:50,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 02:38:50,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-28 02:38:50,981 INFO L87 Difference]: Start difference. First operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:38:51,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:38:51,017 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2021-12-28 02:38:51,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 02:38:51,019 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-28 02:38:51,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:38:51,027 INFO L225 Difference]: With dead ends: 121 [2021-12-28 02:38:51,027 INFO L226 Difference]: Without dead ends: 56 [2021-12-28 02:38:51,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-28 02:38:51,034 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:38:51,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:38:51,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-28 02:38:51,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-12-28 02:38:51,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 45 states have internal predecessors, (58), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-28 02:38:51,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2021-12-28 02:38:51,076 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 7 [2021-12-28 02:38:51,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:38:51,076 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2021-12-28 02:38:51,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:38:51,077 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2021-12-28 02:38:51,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-28 02:38:51,077 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:38:51,078 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:38:51,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 02:38:51,078 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:38:51,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:38:51,079 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-12-28 02:38:51,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:38:51,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202270024] [2021-12-28 02:38:51,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:38:51,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:38:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 02:38:51,091 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 02:38:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 02:38:51,110 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 02:38:51,111 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-28 02:38:51,112 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-28 02:38:51,113 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-28 02:38:51,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 02:38:51,116 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-28 02:38:51,118 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-28 02:38:51,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.12 02:38:51 BoogieIcfgContainer [2021-12-28 02:38:51,140 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-28 02:38:51,141 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 02:38:51,142 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 02:38:51,142 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 02:38:51,143 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:38:50" (3/4) ... [2021-12-28 02:38:51,145 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-28 02:38:51,145 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 02:38:51,148 INFO L158 Benchmark]: Toolchain (without parser) took 1343.61ms. Allocated memory was 54.5MB in the beginning and 69.2MB in the end (delta: 14.7MB). Free memory was 33.0MB in the beginning and 43.3MB in the end (delta: -10.3MB). Peak memory consumption was 3.8MB. Max. memory is 16.1GB. [2021-12-28 02:38:51,148 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 54.5MB. Free memory is still 36.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 02:38:51,151 INFO L158 Benchmark]: CACSL2BoogieTranslator took 392.77ms. Allocated memory was 54.5MB in the beginning and 69.2MB in the end (delta: 14.7MB). Free memory was 32.9MB in the beginning and 49.4MB in the end (delta: -16.5MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2021-12-28 02:38:51,152 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.86ms. Allocated memory is still 69.2MB. Free memory was 49.4MB in the beginning and 47.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 02:38:51,154 INFO L158 Benchmark]: Boogie Preprocessor took 55.64ms. Allocated memory is still 69.2MB. Free memory was 47.6MB in the beginning and 46.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 02:38:51,155 INFO L158 Benchmark]: RCFGBuilder took 416.28ms. Allocated memory is still 69.2MB. Free memory was 46.0MB in the beginning and 50.4MB in the end (delta: -4.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-28 02:38:51,155 INFO L158 Benchmark]: TraceAbstraction took 417.41ms. Allocated memory is still 69.2MB. Free memory was 49.8MB in the beginning and 43.7MB in the end (delta: 6.1MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2021-12-28 02:38:51,155 INFO L158 Benchmark]: Witness Printer took 4.10ms. Allocated memory is still 69.2MB. Free memory was 43.7MB in the beginning and 43.3MB in the end (delta: 378.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 02:38:51,162 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 54.5MB. Free memory is still 36.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 392.77ms. Allocated memory was 54.5MB in the beginning and 69.2MB in the end (delta: 14.7MB). Free memory was 32.9MB in the beginning and 49.4MB in the end (delta: -16.5MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.86ms. Allocated memory is still 69.2MB. Free memory was 49.4MB in the beginning and 47.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 55.64ms. Allocated memory is still 69.2MB. Free memory was 47.6MB in the beginning and 46.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 416.28ms. Allocated memory is still 69.2MB. Free memory was 46.0MB in the beginning and 50.4MB in the end (delta: -4.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 417.41ms. Allocated memory is still 69.2MB. Free memory was 49.8MB in the beginning and 43.7MB in the end (delta: 6.1MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * Witness Printer took 4.10ms. Allocated memory is still 69.2MB. Free memory was 43.7MB in the beginning and 43.3MB in the end (delta: 378.6kB). 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: [L310] COND TRUE __VERIFIER_nondet_int() [L311] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=49, x=49] [L47] COND TRUE !(result >= 0.0f && result < 1.399f) VAL [IN=49, x=49] [L48] reach_error() VAL [IN=49, x=49] - UnprovableResult [Line: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 63 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 81 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 81 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-28 02:38:51,208 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_6+soft_float_4-2a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f32113811de2ab4c3fb74e14d99b17c8b125c39361fe4dfe371ba0cd2a7c43ad --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 02:38:52,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 02:38:52,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 02:38:52,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 02:38:52,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 02:38:52,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 02:38:53,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 02:38:53,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 02:38:53,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 02:38:53,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 02:38:53,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 02:38:53,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 02:38:53,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 02:38:53,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 02:38:53,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 02:38:53,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 02:38:53,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 02:38:53,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 02:38:53,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 02:38:53,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 02:38:53,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 02:38:53,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 02:38:53,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 02:38:53,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 02:38:53,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 02:38:53,045 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 02:38:53,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 02:38:53,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 02:38:53,047 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 02:38:53,048 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 02:38:53,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 02:38:53,049 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 02:38:53,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 02:38:53,051 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 02:38:53,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 02:38:53,053 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 02:38:53,053 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 02:38:53,053 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 02:38:53,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 02:38:53,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 02:38:53,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 02:38:53,056 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-28 02:38:53,094 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 02:38:53,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 02:38:53,095 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 02:38:53,095 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 02:38:53,096 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 02:38:53,096 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 02:38:53,097 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 02:38:53,098 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 02:38:53,098 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 02:38:53,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 02:38:53,099 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 02:38:53,099 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 02:38:53,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 02:38:53,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 02:38:53,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 02:38:53,100 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 02:38:53,100 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-28 02:38:53,101 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-28 02:38:53,101 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-28 02:38:53,101 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 02:38:53,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 02:38:53,101 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 02:38:53,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 02:38:53,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 02:38:53,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 02:38:53,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 02:38:53,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:38:53,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 02:38:53,103 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 02:38:53,103 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 02:38:53,103 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-28 02:38:53,103 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-28 02:38:53,104 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 02:38:53,104 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 02:38:53,104 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 02:38:53,104 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-28 02:38:53,105 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f32113811de2ab4c3fb74e14d99b17c8b125c39361fe4dfe371ba0cd2a7c43ad [2021-12-28 02:38:53,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 02:38:53,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 02:38:53,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 02:38:53,443 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 02:38:53,444 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 02:38:53,445 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_6+soft_float_4-2a.c.cil.c [2021-12-28 02:38:53,504 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da2d10644/36dbc2f5cfe54cc690f764f009ebb3a9/FLAG3e2af6700 [2021-12-28 02:38:53,933 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 02:38:53,934 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_6+soft_float_4-2a.c.cil.c [2021-12-28 02:38:53,942 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da2d10644/36dbc2f5cfe54cc690f764f009ebb3a9/FLAG3e2af6700 [2021-12-28 02:38:54,324 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da2d10644/36dbc2f5cfe54cc690f764f009ebb3a9 [2021-12-28 02:38:54,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 02:38:54,329 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 02:38:54,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 02:38:54,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 02:38:54,336 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 02:38:54,337 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:38:54" (1/1) ... [2021-12-28 02:38:54,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e0c9956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:54, skipping insertion in model container [2021-12-28 02:38:54,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:38:54" (1/1) ... [2021-12-28 02:38:54,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 02:38:54,390 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 02:38:54,564 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_6+soft_float_4-2a.c.cil.c[1997,2010] [2021-12-28 02:38:54,570 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_6+soft_float_4-2a.c.cil.c[2391,2404] [2021-12-28 02:38:54,656 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:38:54,670 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 02:38:54,695 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_6+soft_float_4-2a.c.cil.c[1997,2010] [2021-12-28 02:38:54,698 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_6+soft_float_4-2a.c.cil.c[2391,2404] [2021-12-28 02:38:54,734 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:38:54,749 INFO L208 MainTranslator]: Completed translation [2021-12-28 02:38:54,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:54 WrapperNode [2021-12-28 02:38:54,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 02:38:54,751 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 02:38:54,751 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 02:38:54,751 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 02:38:54,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:54" (1/1) ... [2021-12-28 02:38:54,776 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:54" (1/1) ... [2021-12-28 02:38:54,798 INFO L137 Inliner]: procedures = 28, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70 [2021-12-28 02:38:54,798 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 02:38:54,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 02:38:54,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 02:38:54,800 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 02:38:54,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:54" (1/1) ... [2021-12-28 02:38:54,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:54" (1/1) ... [2021-12-28 02:38:54,822 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:54" (1/1) ... [2021-12-28 02:38:54,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:54" (1/1) ... [2021-12-28 02:38:54,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:54" (1/1) ... [2021-12-28 02:38:54,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:54" (1/1) ... [2021-12-28 02:38:54,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:54" (1/1) ... [2021-12-28 02:38:54,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 02:38:54,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 02:38:54,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 02:38:54,855 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 02:38:54,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:54" (1/1) ... [2021-12-28 02:38:54,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:38:54,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 02:38:54,887 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 02:38:54,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 02:38:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 02:38:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-28 02:38:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-28 02:38:54,933 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-28 02:38:54,933 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-12-28 02:38:54,933 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-12-28 02:38:54,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 02:38:54,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 02:38:54,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-28 02:38:54,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-28 02:38:55,020 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 02:38:55,022 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 02:38:57,511 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 02:38:57,517 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 02:38:57,517 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-28 02:38:57,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:38:57 BoogieIcfgContainer [2021-12-28 02:38:57,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 02:38:57,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 02:38:57,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 02:38:57,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 02:38:57,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 02:38:54" (1/3) ... [2021-12-28 02:38:57,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fa2da8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:38:57, skipping insertion in model container [2021-12-28 02:38:57,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:54" (2/3) ... [2021-12-28 02:38:57,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fa2da8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:38:57, skipping insertion in model container [2021-12-28 02:38:57,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:38:57" (3/3) ... [2021-12-28 02:38:57,524 INFO L111 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_4-2a.c.cil.c [2021-12-28 02:38:57,527 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 02:38:57,528 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-28 02:38:57,559 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 02:38:57,564 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 02:38:57,565 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-28 02:38:57,578 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-28 02:38:57,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-28 02:38:57,581 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:38:57,581 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:38:57,582 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:38:57,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:38:57,586 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-12-28 02:38:57,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 02:38:57,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825601404] [2021-12-28 02:38:57,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:38:57,597 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 02:38:57,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 02:38:57,603 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-28 02:38:57,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-28 02:38:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:38:58,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-28 02:38:58,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 02:38:58,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:38:58,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 02:38:58,131 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 02:38:58,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825601404] [2021-12-28 02:38:58,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825601404] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:38:58,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:38:58,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 02:38:58,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847935760] [2021-12-28 02:38:58,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:38:58,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 02:38:58,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 02:38:58,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 02:38:58,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-28 02:38:58,162 INFO L87 Difference]: Start difference. First operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:38:58,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:38:58,184 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2021-12-28 02:38:58,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 02:38:58,185 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-28 02:38:58,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:38:58,191 INFO L225 Difference]: With dead ends: 121 [2021-12-28 02:38:58,191 INFO L226 Difference]: Without dead ends: 56 [2021-12-28 02:38:58,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-28 02:38:58,196 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:38:58,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:38:58,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-28 02:38:58,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-12-28 02:38:58,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 45 states have internal predecessors, (58), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-28 02:38:58,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2021-12-28 02:38:58,227 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 7 [2021-12-28 02:38:58,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:38:58,227 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2021-12-28 02:38:58,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:38:58,228 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2021-12-28 02:38:58,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-28 02:38:58,228 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:38:58,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:38:58,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-28 02:38:58,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 02:38:58,449 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:38:58,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:38:58,450 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-12-28 02:38:58,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 02:38:58,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1373464180] [2021-12-28 02:38:58,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:38:58,450 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 02:38:58,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 02:38:58,452 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-28 02:38:58,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process