./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_2+soft_float_4-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/square_2+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 af68db482217344707737f8e87f1bf38c34023f3266d60519ba723388f89d51c --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:39:41,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:39:41,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:39:41,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:39:41,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:39:41,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:39:41,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:39:41,551 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:39:41,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:39:41,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:39:41,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:39:41,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:39:41,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:39:41,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:39:41,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:39:41,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:39:41,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:39:41,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:39:41,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:39:41,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:39:41,575 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:39:41,575 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:39:41,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:39:41,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:39:41,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:39:41,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:39:41,585 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:39:41,585 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:39:41,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:39:41,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:39:41,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:39:41,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:39:41,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:39:41,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:39:41,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:39:41,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:39:41,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:39:41,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:39:41,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:39:41,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:39:41,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:39:41,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:39:41,595 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 09:39:41,624 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:39:41,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:39:41,625 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:39:41,625 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:39:41,625 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:39:41,626 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:39:41,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:39:41,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:39:41,626 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:39:41,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:39:41,627 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:39:41,628 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 09:39:41,628 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:39:41,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:39:41,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:39:41,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:39:41,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:39:41,629 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:39:41,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:39:41,629 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:39:41,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:39:41,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:39:41,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:39:41,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:39:41,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:39:41,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:39:41,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:39:41,630 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:39:41,631 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 09:39:41,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 09:39:41,631 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:39:41,631 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:39:41,631 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:39:41,632 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af68db482217344707737f8e87f1bf38c34023f3266d60519ba723388f89d51c [2022-07-12 09:39:41,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:39:41,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:39:41,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:39:41,849 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:39:41,850 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:39:41,851 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_2+soft_float_4-2a.c.cil.c [2022-07-12 09:39:41,927 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b020120a/0b8293a498ad47c2bdfad61c0c25d19b/FLAG4a628f466 [2022-07-12 09:39:42,279 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:39:42,280 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_2+soft_float_4-2a.c.cil.c [2022-07-12 09:39:42,286 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b020120a/0b8293a498ad47c2bdfad61c0c25d19b/FLAG4a628f466 [2022-07-12 09:39:42,689 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b020120a/0b8293a498ad47c2bdfad61c0c25d19b [2022-07-12 09:39:42,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:39:42,693 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:39:42,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:39:42,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:39:42,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:39:42,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:39:42" (1/1) ... [2022-07-12 09:39:42,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ddd31f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:39:42, skipping insertion in model container [2022-07-12 09:39:42,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:39:42" (1/1) ... [2022-07-12 09:39:42,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:39:42,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:39:42,891 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_2+soft_float_4-2a.c.cil.c[1997,2010] [2022-07-12 09:39:42,895 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_2+soft_float_4-2a.c.cil.c[2391,2404] [2022-07-12 09:39:42,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:39:42,940 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:39:42,952 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_2+soft_float_4-2a.c.cil.c[1997,2010] [2022-07-12 09:39:42,954 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_2+soft_float_4-2a.c.cil.c[2391,2404] [2022-07-12 09:39:42,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:39:42,998 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:39:42,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:39:42 WrapperNode [2022-07-12 09:39:42,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:39:43,000 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:39:43,000 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:39:43,000 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:39:43,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:39:42" (1/1) ... [2022-07-12 09:39:43,021 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:39:42" (1/1) ... [2022-07-12 09:39:43,038 INFO L137 Inliner]: procedures = 27, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2022-07-12 09:39:43,039 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:39:43,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:39:43,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:39:43,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:39:43,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:39:42" (1/1) ... [2022-07-12 09:39:43,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:39:42" (1/1) ... [2022-07-12 09:39:43,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:39:42" (1/1) ... [2022-07-12 09:39:43,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:39:42" (1/1) ... [2022-07-12 09:39:43,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:39:42" (1/1) ... [2022-07-12 09:39:43,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:39:42" (1/1) ... [2022-07-12 09:39:43,066 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:39:42" (1/1) ... [2022-07-12 09:39:43,069 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:39:43,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:39:43,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:39:43,070 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:39:43,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:39:42" (1/1) ... [2022-07-12 09:39:43,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:39:43,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:39:43,101 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 09:39:43,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 09:39:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:39:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-12 09:39:43,134 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-12 09:39:43,134 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2022-07-12 09:39:43,134 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2022-07-12 09:39:43,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 09:39:43,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:39:43,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:39:43,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 09:39:43,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 09:39:43,213 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:39:43,214 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:39:43,583 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:39:43,590 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:39:43,590 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 09:39:43,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:39:43 BoogieIcfgContainer [2022-07-12 09:39:43,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:39:43,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:39:43,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:39:43,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:39:43,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:39:42" (1/3) ... [2022-07-12 09:39:43,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1386d51a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:39:43, skipping insertion in model container [2022-07-12 09:39:43,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:39:42" (2/3) ... [2022-07-12 09:39:43,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1386d51a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:39:43, skipping insertion in model container [2022-07-12 09:39:43,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:39:43" (3/3) ... [2022-07-12 09:39:43,602 INFO L111 eAbstractionObserver]: Analyzing ICFG square_2+soft_float_4-2a.c.cil.c [2022-07-12 09:39:43,618 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:39:43,618 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 09:39:43,671 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:39:43,679 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@52597d73, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@59fa7864 [2022-07-12 09:39:43,680 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 09:39:43,684 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 83 states have (on average 1.6746987951807228) internal successors, (139), 85 states have internal predecessors, (139), 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) [2022-07-12 09:39:43,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 09:39:43,690 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:39:43,691 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:39:43,691 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:39:43,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:39:43,695 INFO L85 PathProgramCache]: Analyzing trace with hash -685161840, now seen corresponding path program 1 times [2022-07-12 09:39:43,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:39:43,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713476022] [2022-07-12 09:39:43,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:39:43,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:39:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:39:43,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:39:43,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:39:43,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713476022] [2022-07-12 09:39:43,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713476022] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:39:43,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:39:43,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 09:39:43,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828136515] [2022-07-12 09:39:43,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:39:43,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 09:39:43,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:39:43,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 09:39:43,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 09:39:43,848 INFO L87 Difference]: Start difference. First operand has 97 states, 83 states have (on average 1.6746987951807228) internal successors, (139), 85 states have internal predecessors, (139), 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) [2022-07-12 09:39:43,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:39:43,878 INFO L93 Difference]: Finished difference Result 189 states and 310 transitions. [2022-07-12 09:39:43,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 09:39:43,880 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-12 09:39:43,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:39:43,887 INFO L225 Difference]: With dead ends: 189 [2022-07-12 09:39:43,888 INFO L226 Difference]: Without dead ends: 90 [2022-07-12 09:39:43,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 09:39:43,894 INFO L413 NwaCegarLoop]: 134 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, 134 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:39:43,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:39:43,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-07-12 09:39:43,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2022-07-12 09:39:43,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 77 states have (on average 1.4415584415584415) internal successors, (111), 79 states have internal predecessors, (111), 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) [2022-07-12 09:39:43,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 126 transitions. [2022-07-12 09:39:43,933 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 126 transitions. Word has length 7 [2022-07-12 09:39:43,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:39:43,933 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 126 transitions. [2022-07-12 09:39:43,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:39:43,934 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 126 transitions. [2022-07-12 09:39:43,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 09:39:43,935 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:39:43,935 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:39:43,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 09:39:43,936 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:39:43,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:39:43,937 INFO L85 PathProgramCache]: Analyzing trace with hash -685102258, now seen corresponding path program 1 times [2022-07-12 09:39:43,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:39:43,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846112036] [2022-07-12 09:39:43,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:39:43,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:39:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 09:39:43,953 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 09:39:43,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 09:39:43,976 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 09:39:43,977 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 09:39:43,978 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-12 09:39:43,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-12 09:39:43,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 09:39:43,982 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-12 09:39:43,985 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 09:39:44,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 09:39:44 BoogieIcfgContainer [2022-07-12 09:39:44,002 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 09:39:44,003 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 09:39:44,003 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 09:39:44,003 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 09:39:44,004 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:39:43" (3/4) ... [2022-07-12 09:39:44,006 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-12 09:39:44,006 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 09:39:44,007 INFO L158 Benchmark]: Toolchain (without parser) took 1313.72ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 61.6MB in the beginning and 80.9MB in the end (delta: -19.2MB). Peak memory consumption was 1.6MB. Max. memory is 16.1GB. [2022-07-12 09:39:44,007 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 96.5MB. Free memory was 74.1MB in the beginning and 74.1MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 09:39:44,008 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.15ms. Allocated memory is still 96.5MB. Free memory was 61.4MB in the beginning and 68.0MB in the end (delta: -6.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 09:39:44,008 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.22ms. Allocated memory is still 96.5MB. Free memory was 68.0MB in the beginning and 66.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 09:39:44,009 INFO L158 Benchmark]: Boogie Preprocessor took 29.48ms. Allocated memory is still 96.5MB. Free memory was 66.4MB in the beginning and 64.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 09:39:44,009 INFO L158 Benchmark]: RCFGBuilder took 522.75ms. Allocated memory is still 96.5MB. Free memory was 64.3MB in the beginning and 46.3MB in the end (delta: 17.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-07-12 09:39:44,010 INFO L158 Benchmark]: TraceAbstraction took 408.68ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 45.9MB in the beginning and 80.9MB in the end (delta: -35.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 09:39:44,010 INFO L158 Benchmark]: Witness Printer took 3.38ms. Allocated memory is still 117.4MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 09:39:44,013 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 96.5MB. Free memory was 74.1MB in the beginning and 74.1MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 299.15ms. Allocated memory is still 96.5MB. Free memory was 61.4MB in the beginning and 68.0MB in the end (delta: -6.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.22ms. Allocated memory is still 96.5MB. Free memory was 68.0MB in the beginning and 66.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.48ms. Allocated memory is still 96.5MB. Free memory was 66.4MB in the beginning and 64.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 522.75ms. Allocated memory is still 96.5MB. Free memory was 64.3MB in the beginning and 46.3MB in the end (delta: 17.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 408.68ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 45.9MB in the beginning and 80.9MB in the end (delta: -35.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.38ms. Allocated memory is still 117.4MB. Free memory is still 80.9MB. 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 < 1.398f) 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, 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, 134 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, 134 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-12 09:39:44,050 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_2+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 af68db482217344707737f8e87f1bf38c34023f3266d60519ba723388f89d51c --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:39:46,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:39:46,019 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:39:46,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:39:46,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:39:46,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:39:46,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:39:46,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:39:46,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:39:46,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:39:46,075 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:39:46,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:39:46,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:39:46,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:39:46,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:39:46,088 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:39:46,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:39:46,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:39:46,093 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:39:46,095 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:39:46,099 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:39:46,100 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:39:46,101 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:39:46,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:39:46,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:39:46,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:39:46,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:39:46,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:39:46,110 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:39:46,110 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:39:46,111 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:39:46,111 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:39:46,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:39:46,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:39:46,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:39:46,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:39:46,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:39:46,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:39:46,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:39:46,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:39:46,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:39:46,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:39:46,121 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-12 09:39:46,153 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:39:46,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:39:46,154 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:39:46,154 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:39:46,155 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:39:46,155 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:39:46,156 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:39:46,156 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:39:46,156 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:39:46,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:39:46,157 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:39:46,157 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:39:46,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:39:46,167 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:39:46,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:39:46,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:39:46,168 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 09:39:46,168 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 09:39:46,168 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 09:39:46,169 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:39:46,169 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:39:46,169 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:39:46,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:39:46,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:39:46,170 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:39:46,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:39:46,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:39:46,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:39:46,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:39:46,171 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:39:46,171 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 09:39:46,171 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 09:39:46,171 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:39:46,171 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:39:46,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:39:46,172 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 09:39:46,172 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af68db482217344707737f8e87f1bf38c34023f3266d60519ba723388f89d51c [2022-07-12 09:39:46,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:39:46,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:39:46,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:39:46,499 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:39:46,500 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:39:46,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_2+soft_float_4-2a.c.cil.c [2022-07-12 09:39:46,551 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a58f084f0/810eb0e0942643068ce25911e1aa7429/FLAG0a3d791f6 [2022-07-12 09:39:47,038 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:39:47,039 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_2+soft_float_4-2a.c.cil.c [2022-07-12 09:39:47,048 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a58f084f0/810eb0e0942643068ce25911e1aa7429/FLAG0a3d791f6 [2022-07-12 09:39:47,534 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a58f084f0/810eb0e0942643068ce25911e1aa7429 [2022-07-12 09:39:47,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:39:47,537 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:39:47,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:39:47,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:39:47,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:39:47,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:39:47" (1/1) ... [2022-07-12 09:39:47,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d79d861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:39:47, skipping insertion in model container [2022-07-12 09:39:47,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:39:47" (1/1) ... [2022-07-12 09:39:47,565 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:39:47,608 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:39:47,792 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_2+soft_float_4-2a.c.cil.c[1997,2010] [2022-07-12 09:39:47,797 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_2+soft_float_4-2a.c.cil.c[2391,2404] [2022-07-12 09:39:47,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:39:47,882 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:39:47,901 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_2+soft_float_4-2a.c.cil.c[1997,2010] [2022-07-12 09:39:47,904 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_2+soft_float_4-2a.c.cil.c[2391,2404] [2022-07-12 09:39:47,934 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:39:47,949 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:39:47,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:39:47 WrapperNode [2022-07-12 09:39:47,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:39:47,950 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:39:47,951 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:39:47,951 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:39:47,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:39:47" (1/1) ... [2022-07-12 09:39:47,978 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:39:47" (1/1) ... [2022-07-12 09:39:48,001 INFO L137 Inliner]: procedures = 28, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70 [2022-07-12 09:39:48,002 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:39:48,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:39:48,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:39:48,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:39:48,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:39:47" (1/1) ... [2022-07-12 09:39:48,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:39:47" (1/1) ... [2022-07-12 09:39:48,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:39:47" (1/1) ... [2022-07-12 09:39:48,028 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:39:47" (1/1) ... [2022-07-12 09:39:48,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:39:47" (1/1) ... [2022-07-12 09:39:48,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:39:47" (1/1) ... [2022-07-12 09:39:48,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:39:47" (1/1) ... [2022-07-12 09:39:48,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:39:48,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:39:48,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:39:48,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:39:48,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:39:47" (1/1) ... [2022-07-12 09:39:48,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:39:48,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:39:48,076 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 09:39:48,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 09:39:48,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:39:48,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-12 09:39:48,121 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-12 09:39:48,121 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-12 09:39:48,122 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2022-07-12 09:39:48,122 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2022-07-12 09:39:48,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:39:48,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:39:48,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 09:39:48,122 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 09:39:48,206 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:39:48,228 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:39:50,678 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:39:50,684 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:39:50,685 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 09:39:50,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:39:50 BoogieIcfgContainer [2022-07-12 09:39:50,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:39:50,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:39:50,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:39:50,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:39:50,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:39:47" (1/3) ... [2022-07-12 09:39:50,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c3666a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:39:50, skipping insertion in model container [2022-07-12 09:39:50,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:39:47" (2/3) ... [2022-07-12 09:39:50,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c3666a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:39:50, skipping insertion in model container [2022-07-12 09:39:50,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:39:50" (3/3) ... [2022-07-12 09:39:50,693 INFO L111 eAbstractionObserver]: Analyzing ICFG square_2+soft_float_4-2a.c.cil.c [2022-07-12 09:39:50,705 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:39:50,705 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 09:39:50,744 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:39:50,750 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@42efffb2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7c27e9e1 [2022-07-12 09:39:50,750 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 09:39:50,754 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) [2022-07-12 09:39:50,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 09:39:50,759 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:39:50,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:39:50,760 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:39:50,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:39:50,764 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-07-12 09:39:50,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 09:39:50,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [270815959] [2022-07-12 09:39:50,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:39:50,774 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 09:39:50,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 09:39:50,786 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 09:39:50,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-12 09:39:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:39:51,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-12 09:39:51,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:39:51,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:39:51,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:39:51,223 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 09:39:51,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [270815959] [2022-07-12 09:39:51,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [270815959] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:39:51,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:39:51,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 09:39:51,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10964041] [2022-07-12 09:39:51,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:39:51,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 09:39:51,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 09:39:51,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 09:39:51,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 09:39:51,265 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) [2022-07-12 09:39:51,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:39:51,299 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2022-07-12 09:39:51,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 09:39:51,301 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-12 09:39:51,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:39:51,309 INFO L225 Difference]: With dead ends: 121 [2022-07-12 09:39:51,309 INFO L226 Difference]: Without dead ends: 56 [2022-07-12 09:39:51,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 09:39:51,317 INFO L413 NwaCegarLoop]: 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 [2022-07-12 09:39:51,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:39:51,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-07-12 09:39:51,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-07-12 09:39:51,359 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) [2022-07-12 09:39:51,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2022-07-12 09:39:51,366 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 7 [2022-07-12 09:39:51,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:39:51,367 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2022-07-12 09:39:51,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:39:51,368 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2022-07-12 09:39:51,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 09:39:51,369 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:39:51,369 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:39:51,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-12 09:39:51,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 09:39:51,586 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:39:51,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:39:51,587 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-07-12 09:39:51,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 09:39:51,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [470231158] [2022-07-12 09:39:51,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:39:51,588 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 09:39:51,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 09:39:51,589 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 09:39:51,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-12 09:42:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 09:42:10,558 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 09:42:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 09:42:41,369 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-12 09:42:41,369 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 09:42:41,371 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-12 09:42:41,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-12 09:42:41,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-12 09:42:41,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 09:42:41,576 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-12 09:42:41,579 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 09:42:41,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 09:42:41 BoogieIcfgContainer [2022-07-12 09:42:41,604 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 09:42:41,605 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 09:42:41,606 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 09:42:41,608 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 09:42:41,609 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:39:50" (3/4) ... [2022-07-12 09:42:41,611 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-12 09:42:41,646 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 09:42:41,646 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 09:42:41,647 INFO L158 Benchmark]: Toolchain (without parser) took 174109.22ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 36.7MB in the beginning and 46.0MB in the end (delta: -9.3MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. [2022-07-12 09:42:41,647 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 44.0MB. Free memory was 26.1MB in the beginning and 26.1MB in the end (delta: 33.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 09:42:41,647 INFO L158 Benchmark]: CACSL2BoogieTranslator took 411.50ms. Allocated memory is still 56.6MB. Free memory was 36.6MB in the beginning and 35.5MB in the end (delta: 1.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-12 09:42:41,648 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.83ms. Allocated memory is still 56.6MB. Free memory was 35.5MB in the beginning and 33.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 09:42:41,648 INFO L158 Benchmark]: Boogie Preprocessor took 39.81ms. Allocated memory is still 56.6MB. Free memory was 33.8MB in the beginning and 32.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 09:42:41,649 INFO L158 Benchmark]: RCFGBuilder took 2643.11ms. Allocated memory is still 56.6MB. Free memory was 32.1MB in the beginning and 31.8MB in the end (delta: 317.6kB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. [2022-07-12 09:42:41,649 INFO L158 Benchmark]: TraceAbstraction took 170916.66ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 31.4MB in the beginning and 47.8MB in the end (delta: -16.4MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2022-07-12 09:42:41,650 INFO L158 Benchmark]: Witness Printer took 40.76ms. Allocated memory is still 69.2MB. Free memory was 47.8MB in the beginning and 46.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 09:42:41,652 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 44.0MB. Free memory was 26.1MB in the beginning and 26.1MB in the end (delta: 33.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 411.50ms. Allocated memory is still 56.6MB. Free memory was 36.6MB in the beginning and 35.5MB in the end (delta: 1.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.83ms. Allocated memory is still 56.6MB. Free memory was 35.5MB in the beginning and 33.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.81ms. Allocated memory is still 56.6MB. Free memory was 33.8MB in the beginning and 32.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2643.11ms. Allocated memory is still 56.6MB. Free memory was 32.1MB in the beginning and 31.8MB in the end (delta: 317.6kB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. * TraceAbstraction took 170916.66ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 31.4MB in the beginning and 47.8MB in the end (delta: -16.4MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * Witness Printer took 40.76ms. Allocated memory is still 69.2MB. Free memory was 47.8MB in the beginning and 46.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 48]: a call to reach_error is reachable a call to reach_error is reachable We found a 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=0.9999999403953552, result=1.3984375, x=0.9999999403953552] [L47] COND TRUE !(result >= 0.0f && result < 1.398f) VAL [IN=0.9999999403953552, result=1.3984375, x=0.9999999403953552] [L48] reach_error() VAL [IN=0.9999999403953552, result=1.3984375, x=0.9999999403953552] - 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: 170.8s, 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, 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, 6 GetRequests, 6 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, 139.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 22 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-07-12 09:42:41,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE