./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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_1+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 5af10be63cc32bea05b0693de4e6da336982b76ff2f5b4edc2ff1c6a5e6322ec --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 02:35:47,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 02:35:47,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 02:35:47,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 02:35:47,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 02:35:47,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 02:35:47,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 02:35:47,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 02:35:47,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 02:35:47,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 02:35:47,424 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 02:35:47,425 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 02:35:47,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 02:35:47,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 02:35:47,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 02:35:47,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 02:35:47,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 02:35:47,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 02:35:47,431 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 02:35:47,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 02:35:47,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 02:35:47,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 02:35:47,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 02:35:47,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 02:35:47,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 02:35:47,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 02:35:47,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 02:35:47,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 02:35:47,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 02:35:47,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 02:35:47,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 02:35:47,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 02:35:47,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 02:35:47,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 02:35:47,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 02:35:47,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 02:35:47,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 02:35:47,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 02:35:47,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 02:35:47,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 02:35:47,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 02:35:47,454 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 02:35:47,480 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 02:35:47,483 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 02:35:47,484 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 02:35:47,484 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 02:35:47,485 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 02:35:47,485 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 02:35:47,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 02:35:47,486 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 02:35:47,486 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 02:35:47,486 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 02:35:47,487 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 02:35:47,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 02:35:47,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 02:35:47,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 02:35:47,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 02:35:47,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 02:35:47,488 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 02:35:47,488 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 02:35:47,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 02:35:47,489 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 02:35:47,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 02:35:47,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 02:35:47,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 02:35:47,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 02:35:47,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:35:47,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 02:35:47,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 02:35:47,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 02:35:47,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 02:35:47,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 02:35:47,492 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 02:35:47,492 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 02:35:47,492 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 02:35:47,492 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 02:35:47,493 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5af10be63cc32bea05b0693de4e6da336982b76ff2f5b4edc2ff1c6a5e6322ec [2021-12-16 02:35:47,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 02:35:47,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 02:35:47,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 02:35:47,729 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 02:35:47,730 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 02:35:47,731 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c [2021-12-16 02:35:47,809 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7e14b216/1d5fc14cd676409c8281bc67ce23723d/FLAG31bf256e3 [2021-12-16 02:35:48,169 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 02:35:48,169 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c [2021-12-16 02:35:48,176 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7e14b216/1d5fc14cd676409c8281bc67ce23723d/FLAG31bf256e3 [2021-12-16 02:35:48,187 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7e14b216/1d5fc14cd676409c8281bc67ce23723d [2021-12-16 02:35:48,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 02:35:48,191 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 02:35:48,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 02:35:48,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 02:35:48,198 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 02:35:48,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:35:48" (1/1) ... [2021-12-16 02:35:48,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d7a0080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:35:48, skipping insertion in model container [2021-12-16 02:35:48,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:35:48" (1/1) ... [2021-12-16 02:35:48,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 02:35:48,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 02:35:48,376 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_1+soft_float_4-2a.c.cil.c[1996,2009] [2021-12-16 02:35:48,381 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_1+soft_float_4-2a.c.cil.c[2390,2403] [2021-12-16 02:35:48,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:35:48,425 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 02:35:48,438 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_1+soft_float_4-2a.c.cil.c[1996,2009] [2021-12-16 02:35:48,439 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_1+soft_float_4-2a.c.cil.c[2390,2403] [2021-12-16 02:35:48,469 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:35:48,483 INFO L208 MainTranslator]: Completed translation [2021-12-16 02:35:48,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:35:48 WrapperNode [2021-12-16 02:35:48,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 02:35:48,485 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 02:35:48,485 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 02:35:48,485 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 02:35:48,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:35:48" (1/1) ... [2021-12-16 02:35:48,500 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:35:48" (1/1) ... [2021-12-16 02:35:48,529 INFO L137 Inliner]: procedures = 27, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2021-12-16 02:35:48,530 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 02:35:48,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 02:35:48,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 02:35:48,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 02:35:48,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:35:48" (1/1) ... [2021-12-16 02:35:48,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:35:48" (1/1) ... [2021-12-16 02:35:48,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:35:48" (1/1) ... [2021-12-16 02:35:48,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:35:48" (1/1) ... [2021-12-16 02:35:48,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:35:48" (1/1) ... [2021-12-16 02:35:48,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:35:48" (1/1) ... [2021-12-16 02:35:48,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:35:48" (1/1) ... [2021-12-16 02:35:48,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 02:35:48,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 02:35:48,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 02:35:48,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 02:35:48,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:35:48" (1/1) ... [2021-12-16 02:35:48,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:35:48,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:35:48,633 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 02:35:48,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 02:35:48,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 02:35:48,673 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-16 02:35:48,674 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-16 02:35:48,674 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-12-16 02:35:48,674 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-12-16 02:35:48,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 02:35:48,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 02:35:48,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 02:35:48,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-16 02:35:48,675 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-16 02:35:48,766 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 02:35:48,768 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 02:35:48,934 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 02:35:48,939 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 02:35:48,940 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-16 02:35:48,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:35:48 BoogieIcfgContainer [2021-12-16 02:35:48,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 02:35:48,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 02:35:48,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 02:35:48,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 02:35:48,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:35:48" (1/3) ... [2021-12-16 02:35:48,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2695c9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:35:48, skipping insertion in model container [2021-12-16 02:35:48,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:35:48" (2/3) ... [2021-12-16 02:35:48,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2695c9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:35:48, skipping insertion in model container [2021-12-16 02:35:48,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:35:48" (3/3) ... [2021-12-16 02:35:48,963 INFO L111 eAbstractionObserver]: Analyzing ICFG square_1+soft_float_4-2a.c.cil.c [2021-12-16 02:35:48,967 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 02:35:48,971 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 02:35:49,046 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 02:35:49,055 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 02:35:49,055 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 02:35:49,085 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-16 02:35:49,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-16 02:35:49,089 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:35:49,089 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:35:49,090 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:35:49,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:35:49,094 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-12-16 02:35:49,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:35:49,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646198955] [2021-12-16 02:35:49,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:35:49,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:35:49,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:35:49,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:35:49,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:35:49,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646198955] [2021-12-16 02:35:49,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646198955] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:35:49,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:35:49,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 02:35:49,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597648620] [2021-12-16 02:35:49,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:35:49,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 02:35:49,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:35:49,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 02:35:49,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 02:35:49,284 INFO L87 Difference]: Start difference. First operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:35:49,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:35:49,323 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2021-12-16 02:35:49,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 02:35:49,325 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-16 02:35:49,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:35:49,339 INFO L225 Difference]: With dead ends: 121 [2021-12-16 02:35:49,340 INFO L226 Difference]: Without dead ends: 56 [2021-12-16 02:35:49,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 02:35:49,347 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:35:49,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:35:49,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-16 02:35:49,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-12-16 02:35:49,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 45 states have internal predecessors, (58), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-16 02:35:49,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2021-12-16 02:35:49,398 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 7 [2021-12-16 02:35:49,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:35:49,398 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2021-12-16 02:35:49,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:35:49,399 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2021-12-16 02:35:49,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-16 02:35:49,400 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:35:49,400 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:35:49,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 02:35:49,401 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:35:49,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:35:49,406 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-12-16 02:35:49,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:35:49,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988856918] [2021-12-16 02:35:49,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:35:49,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:35:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 02:35:49,436 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 02:35:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 02:35:49,473 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 02:35:49,473 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-16 02:35:49,475 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-16 02:35:49,476 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-16 02:35:49,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 02:35:49,482 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-16 02:35:49,485 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-16 02:35:49,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:35:49 BoogieIcfgContainer [2021-12-16 02:35:49,507 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-16 02:35:49,508 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 02:35:49,509 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 02:35:49,509 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 02:35:49,509 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:35:48" (3/4) ... [2021-12-16 02:35:49,512 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-16 02:35:49,512 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 02:35:49,514 INFO L158 Benchmark]: Toolchain (without parser) took 1321.80ms. Allocated memory was 81.8MB in the beginning and 115.3MB in the end (delta: 33.6MB). Free memory was 49.2MB in the beginning and 47.3MB in the end (delta: 1.9MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. [2021-12-16 02:35:49,514 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 81.8MB. Free memory was 40.9MB in the beginning and 40.9MB in the end (delta: 43.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 02:35:49,517 INFO L158 Benchmark]: CACSL2BoogieTranslator took 289.01ms. Allocated memory was 81.8MB in the beginning and 115.3MB in the end (delta: 33.6MB). Free memory was 48.9MB in the beginning and 87.8MB in the end (delta: -38.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-16 02:35:49,517 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.33ms. Allocated memory is still 115.3MB. Free memory was 87.8MB in the beginning and 86.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 02:35:49,520 INFO L158 Benchmark]: Boogie Preprocessor took 53.81ms. Allocated memory is still 115.3MB. Free memory was 86.3MB in the beginning and 85.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 02:35:49,520 INFO L158 Benchmark]: RCFGBuilder took 356.44ms. Allocated memory is still 115.3MB. Free memory was 85.0MB in the beginning and 71.7MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-16 02:35:49,520 INFO L158 Benchmark]: TraceAbstraction took 564.73ms. Allocated memory is still 115.3MB. Free memory was 71.0MB in the beginning and 47.3MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-16 02:35:49,521 INFO L158 Benchmark]: Witness Printer took 3.50ms. Allocated memory is still 115.3MB. Free memory is still 47.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 02:35:49,527 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 81.8MB. Free memory was 40.9MB in the beginning and 40.9MB in the end (delta: 43.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 289.01ms. Allocated memory was 81.8MB in the beginning and 115.3MB in the end (delta: 33.6MB). Free memory was 48.9MB in the beginning and 87.8MB in the end (delta: -38.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.33ms. Allocated memory is still 115.3MB. Free memory was 87.8MB in the beginning and 86.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.81ms. Allocated memory is still 115.3MB. Free memory was 86.3MB in the beginning and 85.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 356.44ms. Allocated memory is still 115.3MB. Free memory was 85.0MB in the beginning and 71.7MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 564.73ms. Allocated memory is still 115.3MB. Free memory was 71.0MB in the beginning and 47.3MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 3.50ms. Allocated memory is still 115.3MB. Free memory is still 47.3MB. 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 < 1.39f) VAL [IN=49, x=49] [L48] reach_error() VAL [IN=49, x=49] - UnprovableResult [Line: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 63 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 81 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 81 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-16 02:35:49,565 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/square_1+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 5af10be63cc32bea05b0693de4e6da336982b76ff2f5b4edc2ff1c6a5e6322ec --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 02:35:51,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 02:35:51,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 02:35:51,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 02:35:51,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 02:35:51,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 02:35:51,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 02:35:51,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 02:35:51,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 02:35:51,571 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 02:35:51,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 02:35:51,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 02:35:51,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 02:35:51,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 02:35:51,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 02:35:51,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 02:35:51,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 02:35:51,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 02:35:51,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 02:35:51,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 02:35:51,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 02:35:51,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 02:35:51,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 02:35:51,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 02:35:51,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 02:35:51,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 02:35:51,598 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 02:35:51,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 02:35:51,600 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 02:35:51,601 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 02:35:51,601 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 02:35:51,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 02:35:51,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 02:35:51,603 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 02:35:51,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 02:35:51,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 02:35:51,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 02:35:51,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 02:35:51,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 02:35:51,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 02:35:51,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 02:35:51,612 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-16 02:35:51,649 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 02:35:51,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 02:35:51,650 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 02:35:51,651 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 02:35:51,652 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 02:35:51,652 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 02:35:51,653 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 02:35:51,653 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 02:35:51,653 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 02:35:51,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 02:35:51,655 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 02:35:51,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 02:35:51,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 02:35:51,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 02:35:51,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 02:35:51,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 02:35:51,656 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 02:35:51,656 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-16 02:35:51,656 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-16 02:35:51,656 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 02:35:51,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 02:35:51,657 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 02:35:51,657 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 02:35:51,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 02:35:51,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 02:35:51,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 02:35:51,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:35:51,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 02:35:51,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 02:35:51,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 02:35:51,659 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-16 02:35:51,659 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-16 02:35:51,659 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 02:35:51,660 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 02:35:51,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 02:35:51,660 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 02:35:51,660 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-16 02:35:51,661 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5af10be63cc32bea05b0693de4e6da336982b76ff2f5b4edc2ff1c6a5e6322ec [2021-12-16 02:35:51,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 02:35:52,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 02:35:52,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 02:35:52,008 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 02:35:52,008 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 02:35:52,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c [2021-12-16 02:35:52,077 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06fe90991/3e7f942a330c4316b09c06dbadf74bb9/FLAGc77d7cc00 [2021-12-16 02:35:52,503 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 02:35:52,504 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_1+soft_float_4-2a.c.cil.c [2021-12-16 02:35:52,515 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06fe90991/3e7f942a330c4316b09c06dbadf74bb9/FLAGc77d7cc00 [2021-12-16 02:35:52,884 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06fe90991/3e7f942a330c4316b09c06dbadf74bb9 [2021-12-16 02:35:52,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 02:35:52,887 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 02:35:52,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 02:35:52,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 02:35:52,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 02:35:52,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:35:52" (1/1) ... [2021-12-16 02:35:52,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74b94d92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:35:52, skipping insertion in model container [2021-12-16 02:35:52,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:35:52" (1/1) ... [2021-12-16 02:35:52,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 02:35:52,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 02:35:53,125 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_1+soft_float_4-2a.c.cil.c[1996,2009] [2021-12-16 02:35:53,128 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_1+soft_float_4-2a.c.cil.c[2390,2403] [2021-12-16 02:35:53,162 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:35:53,178 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 02:35:53,200 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_1+soft_float_4-2a.c.cil.c[1996,2009] [2021-12-16 02:35:53,202 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_1+soft_float_4-2a.c.cil.c[2390,2403] [2021-12-16 02:35:53,225 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:35:53,238 INFO L208 MainTranslator]: Completed translation [2021-12-16 02:35:53,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:35:53 WrapperNode [2021-12-16 02:35:53,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 02:35:53,240 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 02:35:53,240 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 02:35:53,240 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 02:35:53,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:35:53" (1/1) ... [2021-12-16 02:35:53,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:35:53" (1/1) ... [2021-12-16 02:35:53,270 INFO L137 Inliner]: procedures = 28, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70 [2021-12-16 02:35:53,270 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 02:35:53,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 02:35:53,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 02:35:53,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 02:35:53,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:35:53" (1/1) ... [2021-12-16 02:35:53,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:35:53" (1/1) ... [2021-12-16 02:35:53,287 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:35:53" (1/1) ... [2021-12-16 02:35:53,287 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:35:53" (1/1) ... [2021-12-16 02:35:53,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:35:53" (1/1) ... [2021-12-16 02:35:53,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:35:53" (1/1) ... [2021-12-16 02:35:53,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:35:53" (1/1) ... [2021-12-16 02:35:53,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 02:35:53,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 02:35:53,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 02:35:53,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 02:35:53,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:35:53" (1/1) ... [2021-12-16 02:35:53,326 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:35:53,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:35:53,347 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 02:35:53,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 02:35:53,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 02:35:53,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-16 02:35:53,387 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-16 02:35:53,387 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-16 02:35:53,387 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-12-16 02:35:53,387 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-12-16 02:35:53,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 02:35:53,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 02:35:53,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-16 02:35:53,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-16 02:35:53,519 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 02:35:53,521 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 02:35:56,038 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 02:35:56,044 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 02:35:56,046 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-16 02:35:56,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:35:56 BoogieIcfgContainer [2021-12-16 02:35:56,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 02:35:56,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 02:35:56,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 02:35:56,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 02:35:56,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:35:52" (1/3) ... [2021-12-16 02:35:56,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27188997 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:35:56, skipping insertion in model container [2021-12-16 02:35:56,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:35:53" (2/3) ... [2021-12-16 02:35:56,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27188997 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:35:56, skipping insertion in model container [2021-12-16 02:35:56,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:35:56" (3/3) ... [2021-12-16 02:35:56,057 INFO L111 eAbstractionObserver]: Analyzing ICFG square_1+soft_float_4-2a.c.cil.c [2021-12-16 02:35:56,061 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 02:35:56,061 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 02:35:56,094 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 02:35:56,098 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 02:35:56,099 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 02:35:56,111 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-16 02:35:56,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-16 02:35:56,114 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:35:56,115 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:35:56,115 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:35:56,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:35:56,120 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-12-16 02:35:56,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 02:35:56,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1841419013] [2021-12-16 02:35:56,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:35:56,131 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 02:35:56,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 02:35:56,133 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 02:35:56,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-16 02:35:56,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:35:56,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-16 02:35:56,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 02:35:56,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:35:56,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 02:35:56,592 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 02:35:56,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1841419013] [2021-12-16 02:35:56,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1841419013] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:35:56,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:35:56,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 02:35:56,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422039376] [2021-12-16 02:35:56,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:35:56,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 02:35:56,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 02:35:56,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 02:35:56,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 02:35:56,632 INFO L87 Difference]: Start difference. First operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:35:56,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:35:56,670 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2021-12-16 02:35:56,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 02:35:56,672 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-16 02:35:56,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:35:56,680 INFO L225 Difference]: With dead ends: 121 [2021-12-16 02:35:56,681 INFO L226 Difference]: Without dead ends: 56 [2021-12-16 02:35:56,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 02:35:56,688 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:35:56,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:35:56,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-16 02:35:56,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-12-16 02:35:56,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 45 states have internal predecessors, (58), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-16 02:35:56,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2021-12-16 02:35:56,741 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 7 [2021-12-16 02:35:56,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:35:56,741 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2021-12-16 02:35:56,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:35:56,742 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2021-12-16 02:35:56,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-16 02:35:56,742 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:35:56,743 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:35:56,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-16 02:35:56,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 02:35:56,944 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:35:56,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:35:56,944 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-12-16 02:35:56,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 02:35:56,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [714754994] [2021-12-16 02:35:56,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:35:56,945 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 02:35:56,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 02:35:56,947 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 02:35:56,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-16 02:36:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 02:36:35,414 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 02:36:38,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 02:36:38,080 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-16 02:36:38,081 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-16 02:36:38,082 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-16 02:36:38,083 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-16 02:36:38,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-16 02:36:38,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 02:36:38,288 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-16 02:36:38,291 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-16 02:36:38,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:36:38 BoogieIcfgContainer [2021-12-16 02:36:38,311 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-16 02:36:38,312 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 02:36:38,312 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 02:36:38,312 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 02:36:38,313 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:35:56" (3/4) ... [2021-12-16 02:36:38,314 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-16 02:36:38,352 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-16 02:36:38,352 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 02:36:38,353 INFO L158 Benchmark]: Toolchain (without parser) took 45465.48ms. Allocated memory was 52.4MB in the beginning and 69.2MB in the end (delta: 16.8MB). Free memory was 29.1MB in the beginning and 41.2MB in the end (delta: -12.1MB). Peak memory consumption was 3.9MB. Max. memory is 16.1GB. [2021-12-16 02:36:38,353 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 52.4MB. Free memory is still 34.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 02:36:38,354 INFO L158 Benchmark]: CACSL2BoogieTranslator took 347.76ms. Allocated memory was 52.4MB in the beginning and 69.2MB in the end (delta: 16.8MB). Free memory was 28.9MB in the beginning and 49.7MB in the end (delta: -20.7MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2021-12-16 02:36:38,354 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.59ms. Allocated memory is still 69.2MB. Free memory was 49.7MB in the beginning and 47.8MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 02:36:38,354 INFO L158 Benchmark]: Boogie Preprocessor took 41.25ms. Allocated memory is still 69.2MB. Free memory was 47.8MB in the beginning and 46.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 02:36:38,354 INFO L158 Benchmark]: RCFGBuilder took 2728.68ms. Allocated memory is still 69.2MB. Free memory was 46.2MB in the beginning and 50.1MB in the end (delta: -3.9MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2021-12-16 02:36:38,355 INFO L158 Benchmark]: TraceAbstraction took 42262.15ms. Allocated memory is still 69.2MB. Free memory was 49.8MB in the beginning and 43.3MB in the end (delta: 6.5MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2021-12-16 02:36:38,355 INFO L158 Benchmark]: Witness Printer took 40.55ms. Allocated memory is still 69.2MB. Free memory was 42.9MB in the beginning and 41.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 02:36:38,357 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 52.4MB. Free memory is still 34.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 347.76ms. Allocated memory was 52.4MB in the beginning and 69.2MB in the end (delta: 16.8MB). Free memory was 28.9MB in the beginning and 49.7MB in the end (delta: -20.7MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.59ms. Allocated memory is still 69.2MB. Free memory was 49.7MB in the beginning and 47.8MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 41.25ms. Allocated memory is still 69.2MB. Free memory was 47.8MB in the beginning and 46.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2728.68ms. Allocated memory is still 69.2MB. Free memory was 46.2MB in the beginning and 50.1MB in the end (delta: -3.9MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. * TraceAbstraction took 42262.15ms. Allocated memory is still 69.2MB. Free memory was 49.8MB in the beginning and 43.3MB in the end (delta: 6.5MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. * Witness Printer took 40.55ms. Allocated memory is still 69.2MB. Free memory was 42.9MB in the beginning and 41.2MB 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=0.9810709357261658, result=1.3930526971817017, x=0.9810709357261658] [L47] COND TRUE !(result >= 0.0f && result < 1.39f) VAL [IN=0.9810709357261658, result=1.3930526971817017, x=0.9810709357261658] [L48] reach_error() VAL [IN=0.9810709357261658, result=1.3930526971817017, x=0.9810709357261658] - 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: 42.2s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 81 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 81 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 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, 38.8s SatisfiabilityAnalysisTime, 0.1s 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! [2021-12-16 02:36:38,451 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