./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_4+soft_float_4-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 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_4+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 e448f16723ad202cc72d167f8951516486910b6c33698da967b6635bbb5adec7 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 12:17:38,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 12:17:38,185 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 12:17:38,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 12:17:38,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 12:17:38,223 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 12:17:38,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 12:17:38,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 12:17:38,231 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 12:17:38,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 12:17:38,232 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 12:17:38,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 12:17:38,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 12:17:38,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 12:17:38,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 12:17:38,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 12:17:38,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 12:17:38,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 12:17:38,245 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 12:17:38,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 12:17:38,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 12:17:38,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 12:17:38,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 12:17:38,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 12:17:38,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 12:17:38,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 12:17:38,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 12:17:38,254 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 12:17:38,255 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 12:17:38,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 12:17:38,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 12:17:38,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 12:17:38,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 12:17:38,258 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 12:17:38,259 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 12:17:38,259 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 12:17:38,260 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 12:17:38,260 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 12:17:38,260 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 12:17:38,261 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 12:17:38,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 12:17:38,262 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 12:17:38,285 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 12:17:38,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 12:17:38,286 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 12:17:38,286 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 12:17:38,287 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 12:17:38,287 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 12:17:38,287 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 12:17:38,287 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 12:17:38,288 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 12:17:38,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 12:17:38,288 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 12:17:38,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 12:17:38,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 12:17:38,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 12:17:38,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 12:17:38,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 12:17:38,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 12:17:38,290 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 12:17:38,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 12:17:38,290 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 12:17:38,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 12:17:38,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 12:17:38,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 12:17:38,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 12:17:38,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:17:38,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 12:17:38,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 12:17:38,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 12:17:38,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 12:17:38,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 12:17:38,292 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 12:17:38,292 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 12:17:38,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 12:17:38,292 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 12:17:38,292 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e448f16723ad202cc72d167f8951516486910b6c33698da967b6635bbb5adec7 [2021-12-15 12:17:38,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 12:17:38,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 12:17:38,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 12:17:38,517 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 12:17:38,517 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 12:17:38,518 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_4+soft_float_4-2a.c.cil.c [2021-12-15 12:17:38,583 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f30e36887/801fd17c350145ad9f326d9daac19336/FLAG3b6c671bb [2021-12-15 12:17:38,909 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 12:17:38,909 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_4+soft_float_4-2a.c.cil.c [2021-12-15 12:17:38,922 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f30e36887/801fd17c350145ad9f326d9daac19336/FLAG3b6c671bb [2021-12-15 12:17:39,313 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f30e36887/801fd17c350145ad9f326d9daac19336 [2021-12-15 12:17:39,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 12:17:39,316 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 12:17:39,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 12:17:39,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 12:17:39,332 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 12:17:39,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:17:39" (1/1) ... [2021-12-15 12:17:39,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19f03210 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:17:39, skipping insertion in model container [2021-12-15 12:17:39,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:17:39" (1/1) ... [2021-12-15 12:17:39,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 12:17:39,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 12:17:39,493 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_4+soft_float_4-2a.c.cil.c[1999,2012] [2021-12-15 12:17:39,496 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_4+soft_float_4-2a.c.cil.c[2393,2406] [2021-12-15 12:17:39,516 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:17:39,521 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 12:17:39,540 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_4+soft_float_4-2a.c.cil.c[1999,2012] [2021-12-15 12:17:39,542 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_4+soft_float_4-2a.c.cil.c[2393,2406] [2021-12-15 12:17:39,566 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:17:39,576 INFO L208 MainTranslator]: Completed translation [2021-12-15 12:17:39,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:17:39 WrapperNode [2021-12-15 12:17:39,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 12:17:39,578 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 12:17:39,578 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 12:17:39,578 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 12:17:39,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:17:39" (1/1) ... [2021-12-15 12:17:39,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:17:39" (1/1) ... [2021-12-15 12:17:39,617 INFO L137 Inliner]: procedures = 27, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2021-12-15 12:17:39,618 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 12:17:39,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 12:17:39,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 12:17:39,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 12:17:39,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:17:39" (1/1) ... [2021-12-15 12:17:39,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:17:39" (1/1) ... [2021-12-15 12:17:39,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:17:39" (1/1) ... [2021-12-15 12:17:39,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:17:39" (1/1) ... [2021-12-15 12:17:39,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:17:39" (1/1) ... [2021-12-15 12:17:39,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:17:39" (1/1) ... [2021-12-15 12:17:39,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:17:39" (1/1) ... [2021-12-15 12:17:39,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 12:17:39,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 12:17:39,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 12:17:39,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 12:17:39,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:17:39" (1/1) ... [2021-12-15 12:17:39,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:17:39,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 12:17:39,698 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) [2021-12-15 12:17:39,700 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 [2021-12-15 12:17:39,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 12:17:39,730 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-15 12:17:39,730 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-15 12:17:39,731 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-12-15 12:17:39,731 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-12-15 12:17:39,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 12:17:39,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 12:17:39,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 12:17:39,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 12:17:39,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 12:17:39,825 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 12:17:39,826 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 12:17:40,076 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 12:17:40,086 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 12:17:40,086 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-15 12:17:40,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:17:40 BoogieIcfgContainer [2021-12-15 12:17:40,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 12:17:40,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 12:17:40,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 12:17:40,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 12:17:40,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 12:17:39" (1/3) ... [2021-12-15 12:17:40,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad09511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:17:40, skipping insertion in model container [2021-12-15 12:17:40,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:17:39" (2/3) ... [2021-12-15 12:17:40,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad09511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:17:40, skipping insertion in model container [2021-12-15 12:17:40,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:17:40" (3/3) ... [2021-12-15 12:17:40,098 INFO L111 eAbstractionObserver]: Analyzing ICFG square_4+soft_float_4-2a.c.cil.c [2021-12-15 12:17:40,103 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 12:17:40,103 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 12:17:40,161 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 12:17:40,169 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 [2021-12-15 12:17:40,169 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 12:17:40,197 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) [2021-12-15 12:17:40,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-15 12:17:40,200 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:17:40,201 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:17:40,202 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:17:40,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:17:40,209 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-12-15 12:17:40,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:17:40,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452473719] [2021-12-15 12:17:40,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:17:40,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:17:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:17:40,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:17:40,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 12:17:40,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452473719] [2021-12-15 12:17:40,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452473719] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:17:40,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:17:40,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 12:17:40,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910024030] [2021-12-15 12:17:40,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:17:40,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 12:17:40,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 12:17:40,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 12:17:40,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 12:17:40,392 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) [2021-12-15 12:17:40,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:17:40,419 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2021-12-15 12:17:40,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 12:17:40,422 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 [2021-12-15 12:17:40,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:17:40,430 INFO L225 Difference]: With dead ends: 121 [2021-12-15 12:17:40,430 INFO L226 Difference]: Without dead ends: 56 [2021-12-15 12:17:40,434 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 [2021-12-15 12:17:40,437 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 [2021-12-15 12:17:40,438 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] [2021-12-15 12:17:40,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-15 12:17:40,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-12-15 12:17:40,476 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) [2021-12-15 12:17:40,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2021-12-15 12:17:40,480 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 7 [2021-12-15 12:17:40,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:17:40,481 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2021-12-15 12:17:40,481 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) [2021-12-15 12:17:40,482 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2021-12-15 12:17:40,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-15 12:17:40,482 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:17:40,482 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:17:40,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 12:17:40,483 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:17:40,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:17:40,484 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-12-15 12:17:40,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 12:17:40,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907978621] [2021-12-15 12:17:40,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:17:40,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 12:17:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 12:17:40,496 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 12:17:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 12:17:40,513 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 12:17:40,514 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-15 12:17:40,515 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-15 12:17:40,516 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-15 12:17:40,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 12:17:40,519 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-15 12:17:40,521 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-15 12:17:40,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 12:17:40 BoogieIcfgContainer [2021-12-15 12:17:40,539 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-15 12:17:40,541 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-15 12:17:40,541 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-15 12:17:40,541 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-15 12:17:40,542 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:17:40" (3/4) ... [2021-12-15 12:17:40,544 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-15 12:17:40,544 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-15 12:17:40,545 INFO L158 Benchmark]: Toolchain (without parser) took 1228.61ms. Allocated memory was 86.0MB in the beginning and 107.0MB in the end (delta: 21.0MB). Free memory was 53.3MB in the beginning and 67.5MB in the end (delta: -14.2MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2021-12-15 12:17:40,545 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 86.0MB. Free memory was 42.2MB in the beginning and 42.2MB in the end (delta: 39.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:17:40,545 INFO L158 Benchmark]: CACSL2BoogieTranslator took 260.36ms. Allocated memory is still 86.0MB. Free memory was 53.2MB in the beginning and 58.7MB in the end (delta: -5.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 12:17:40,546 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.99ms. Allocated memory is still 86.0MB. Free memory was 58.7MB in the beginning and 56.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 12:17:40,546 INFO L158 Benchmark]: Boogie Preprocessor took 36.22ms. Allocated memory is still 86.0MB. Free memory was 56.9MB in the beginning and 55.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:17:40,546 INFO L158 Benchmark]: RCFGBuilder took 432.87ms. Allocated memory is still 86.0MB. Free memory was 55.6MB in the beginning and 42.9MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 12:17:40,547 INFO L158 Benchmark]: TraceAbstraction took 449.79ms. Allocated memory was 86.0MB in the beginning and 107.0MB in the end (delta: 21.0MB). Free memory was 42.2MB in the beginning and 67.5MB in the end (delta: -25.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:17:40,547 INFO L158 Benchmark]: Witness Printer took 3.25ms. Allocated memory is still 107.0MB. Free memory is still 67.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:17:40,548 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 86.0MB. Free memory was 42.2MB in the beginning and 42.2MB in the end (delta: 39.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 260.36ms. Allocated memory is still 86.0MB. Free memory was 53.2MB in the beginning and 58.7MB in the end (delta: -5.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.99ms. Allocated memory is still 86.0MB. Free memory was 58.7MB in the beginning and 56.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.22ms. Allocated memory is still 86.0MB. Free memory was 56.9MB in the beginning and 55.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 432.87ms. Allocated memory is still 86.0MB. Free memory was 55.6MB in the beginning and 42.9MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 449.79ms. Allocated memory was 86.0MB in the beginning and 107.0MB in the end (delta: 21.0MB). Free memory was 42.2MB in the beginning and 67.5MB in the end (delta: -25.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.25ms. Allocated memory is still 107.0MB. Free memory is still 67.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [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 < 1.39844f) 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 [2021-12-15 12:17:40,576 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_4+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 e448f16723ad202cc72d167f8951516486910b6c33698da967b6635bbb5adec7 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 12:17:42,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 12:17:42,407 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 12:17:42,429 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 12:17:42,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 12:17:42,434 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 12:17:42,436 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 12:17:42,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 12:17:42,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 12:17:42,445 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 12:17:42,446 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 12:17:42,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 12:17:42,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 12:17:42,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 12:17:42,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 12:17:42,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 12:17:42,456 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 12:17:42,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 12:17:42,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 12:17:42,464 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 12:17:42,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 12:17:42,466 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 12:17:42,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 12:17:42,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 12:17:42,472 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 12:17:42,472 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 12:17:42,472 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 12:17:42,473 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 12:17:42,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 12:17:42,474 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 12:17:42,475 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 12:17:42,475 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 12:17:42,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 12:17:42,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 12:17:42,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 12:17:42,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 12:17:42,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 12:17:42,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 12:17:42,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 12:17:42,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 12:17:42,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 12:17:42,484 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 12:17:42,509 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 12:17:42,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 12:17:42,510 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 12:17:42,510 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 12:17:42,511 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 12:17:42,511 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 12:17:42,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 12:17:42,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 12:17:42,512 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 12:17:42,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 12:17:42,513 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 12:17:42,513 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 12:17:42,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 12:17:42,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 12:17:42,514 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 12:17:42,514 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 12:17:42,514 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 12:17:42,514 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 12:17:42,514 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 12:17:42,524 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 12:17:42,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 12:17:42,525 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 12:17:42,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 12:17:42,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 12:17:42,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 12:17:42,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 12:17:42,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:17:42,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 12:17:42,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 12:17:42,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 12:17:42,526 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 12:17:42,527 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 12:17:42,527 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 12:17:42,527 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 12:17:42,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 12:17:42,527 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 12:17:42,527 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 12:17:42,528 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e448f16723ad202cc72d167f8951516486910b6c33698da967b6635bbb5adec7 [2021-12-15 12:17:42,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 12:17:42,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 12:17:42,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 12:17:42,802 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 12:17:42,802 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 12:17:42,804 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_4+soft_float_4-2a.c.cil.c [2021-12-15 12:17:42,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53cb6bd2c/bf5abdc4a0fa422c8eb711998ff8ab1a/FLAG95dc68a61 [2021-12-15 12:17:43,344 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 12:17:43,344 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_4+soft_float_4-2a.c.cil.c [2021-12-15 12:17:43,358 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53cb6bd2c/bf5abdc4a0fa422c8eb711998ff8ab1a/FLAG95dc68a61 [2021-12-15 12:17:43,836 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53cb6bd2c/bf5abdc4a0fa422c8eb711998ff8ab1a [2021-12-15 12:17:43,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 12:17:43,840 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 12:17:43,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 12:17:43,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 12:17:43,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 12:17:43,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:17:43" (1/1) ... [2021-12-15 12:17:43,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f988d3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:17:43, skipping insertion in model container [2021-12-15 12:17:43,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:17:43" (1/1) ... [2021-12-15 12:17:43,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 12:17:43,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 12:17:44,000 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_4+soft_float_4-2a.c.cil.c[1999,2012] [2021-12-15 12:17:44,006 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_4+soft_float_4-2a.c.cil.c[2393,2406] [2021-12-15 12:17:44,049 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:17:44,098 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 12:17:44,123 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_4+soft_float_4-2a.c.cil.c[1999,2012] [2021-12-15 12:17:44,124 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_4+soft_float_4-2a.c.cil.c[2393,2406] [2021-12-15 12:17:44,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:17:44,155 INFO L208 MainTranslator]: Completed translation [2021-12-15 12:17:44,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:17:44 WrapperNode [2021-12-15 12:17:44,156 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 12:17:44,156 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 12:17:44,157 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 12:17:44,157 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 12:17:44,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:17:44" (1/1) ... [2021-12-15 12:17:44,169 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:17:44" (1/1) ... [2021-12-15 12:17:44,200 INFO L137 Inliner]: procedures = 28, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70 [2021-12-15 12:17:44,200 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 12:17:44,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 12:17:44,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 12:17:44,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 12:17:44,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:17:44" (1/1) ... [2021-12-15 12:17:44,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:17:44" (1/1) ... [2021-12-15 12:17:44,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:17:44" (1/1) ... [2021-12-15 12:17:44,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:17:44" (1/1) ... [2021-12-15 12:17:44,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:17:44" (1/1) ... [2021-12-15 12:17:44,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:17:44" (1/1) ... [2021-12-15 12:17:44,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:17:44" (1/1) ... [2021-12-15 12:17:44,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 12:17:44,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 12:17:44,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 12:17:44,244 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 12:17:44,245 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:17:44" (1/1) ... [2021-12-15 12:17:44,263 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:17:44,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 12:17:44,295 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) [2021-12-15 12:17:44,299 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 [2021-12-15 12:17:44,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 12:17:44,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 12:17:44,335 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-15 12:17:44,336 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-15 12:17:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-12-15 12:17:44,336 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-12-15 12:17:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 12:17:44,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 12:17:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 12:17:44,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 12:17:44,406 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 12:17:44,410 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 12:17:46,881 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 12:17:46,885 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 12:17:46,886 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-15 12:17:46,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:17:46 BoogieIcfgContainer [2021-12-15 12:17:46,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 12:17:46,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 12:17:46,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 12:17:46,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 12:17:46,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 12:17:43" (1/3) ... [2021-12-15 12:17:46,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d8907d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:17:46, skipping insertion in model container [2021-12-15 12:17:46,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:17:44" (2/3) ... [2021-12-15 12:17:46,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d8907d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 12:17:46, skipping insertion in model container [2021-12-15 12:17:46,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:17:46" (3/3) ... [2021-12-15 12:17:46,896 INFO L111 eAbstractionObserver]: Analyzing ICFG square_4+soft_float_4-2a.c.cil.c [2021-12-15 12:17:46,899 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 12:17:46,900 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 12:17:46,929 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 12:17:46,935 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 [2021-12-15 12:17:46,935 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 12:17:46,956 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) [2021-12-15 12:17:46,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-15 12:17:46,959 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:17:46,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:17:46,959 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:17:46,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:17:46,964 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-12-15 12:17:46,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 12:17:46,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1258019425] [2021-12-15 12:17:46,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:17:46,972 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 12:17:46,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 12:17:46,974 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) [2021-12-15 12:17:46,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 12:17:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 12:17:47,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-15 12:17:47,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 12:17:47,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 12:17:47,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 12:17:47,389 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 12:17:47,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1258019425] [2021-12-15 12:17:47,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1258019425] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 12:17:47,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 12:17:47,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 12:17:47,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875272281] [2021-12-15 12:17:47,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 12:17:47,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 12:17:47,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 12:17:47,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 12:17:47,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 12:17:47,415 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) [2021-12-15 12:17:47,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 12:17:47,434 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2021-12-15 12:17:47,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 12:17:47,436 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 [2021-12-15 12:17:47,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 12:17:47,441 INFO L225 Difference]: With dead ends: 121 [2021-12-15 12:17:47,442 INFO L226 Difference]: Without dead ends: 56 [2021-12-15 12:17:47,444 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 [2021-12-15 12:17:47,446 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 [2021-12-15 12:17:47,447 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] [2021-12-15 12:17:47,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-15 12:17:47,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-12-15 12:17:47,476 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) [2021-12-15 12:17:47,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2021-12-15 12:17:47,486 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 7 [2021-12-15 12:17:47,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 12:17:47,487 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2021-12-15 12:17:47,488 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) [2021-12-15 12:17:47,488 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2021-12-15 12:17:47,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-15 12:17:47,489 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 12:17:47,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-15 12:17:47,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-15 12:17:47,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 12:17:47,707 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 12:17:47,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 12:17:47,710 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-12-15 12:17:47,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 12:17:47,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152415469] [2021-12-15 12:17:47,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 12:17:47,714 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 12:17:47,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 12:17:47,716 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) [2021-12-15 12:17:47,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process