./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_4+soft_float_3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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_3a.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 52e7e3a0d80d0519558794c69b54bf5c07c5549c1d780651d891121aff50735c --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 20:42:19,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 20:42:19,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 20:42:19,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 20:42:19,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 20:42:19,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 20:42:19,311 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 20:42:19,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 20:42:19,314 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 20:42:19,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 20:42:19,318 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 20:42:19,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 20:42:19,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 20:42:19,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 20:42:19,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 20:42:19,324 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 20:42:19,325 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 20:42:19,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 20:42:19,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 20:42:19,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 20:42:19,333 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 20:42:19,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 20:42:19,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 20:42:19,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 20:42:19,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 20:42:19,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 20:42:19,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 20:42:19,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 20:42:19,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 20:42:19,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 20:42:19,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 20:42:19,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 20:42:19,345 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 20:42:19,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 20:42:19,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 20:42:19,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 20:42:19,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 20:42:19,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 20:42:19,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 20:42:19,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 20:42:19,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 20:42:19,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 20:42:19,350 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 20:42:19,371 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 20:42:19,372 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 20:42:19,372 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 20:42:19,372 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 20:42:19,372 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 20:42:19,373 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 20:42:19,373 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 20:42:19,373 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 20:42:19,373 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 20:42:19,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 20:42:19,374 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 20:42:19,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 20:42:19,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 20:42:19,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 20:42:19,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 20:42:19,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 20:42:19,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 20:42:19,375 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 20:42:19,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 20:42:19,376 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 20:42:19,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 20:42:19,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 20:42:19,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 20:42:19,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 20:42:19,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:42:19,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 20:42:19,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 20:42:19,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 20:42:19,377 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 20:42:19,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 20:42:19,378 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 20:42:19,378 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 20:42:19,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 20:42:19,378 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52e7e3a0d80d0519558794c69b54bf5c07c5549c1d780651d891121aff50735c [2022-07-19 20:42:19,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 20:42:19,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 20:42:19,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 20:42:19,559 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 20:42:19,559 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 20:42:19,560 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_4+soft_float_3a.c.cil.c [2022-07-19 20:42:19,614 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee6cfa432/b1c19bcaeec140f3b00f93ba651e943f/FLAGfd7854dd0 [2022-07-19 20:42:19,987 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 20:42:19,990 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_4+soft_float_3a.c.cil.c [2022-07-19 20:42:19,998 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee6cfa432/b1c19bcaeec140f3b00f93ba651e943f/FLAGfd7854dd0 [2022-07-19 20:42:20,394 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee6cfa432/b1c19bcaeec140f3b00f93ba651e943f [2022-07-19 20:42:20,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 20:42:20,398 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 20:42:20,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 20:42:20,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 20:42:20,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 20:42:20,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:42:20" (1/1) ... [2022-07-19 20:42:20,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44ac259a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:20, skipping insertion in model container [2022-07-19 20:42:20,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:42:20" (1/1) ... [2022-07-19 20:42:20,412 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 20:42:20,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 20:42:20,609 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_3a.c.cil.c[1999,2012] [2022-07-19 20:42:20,612 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_3a.c.cil.c[2368,2381] [2022-07-19 20:42:20,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:42:20,666 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 20:42:20,681 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_3a.c.cil.c[1999,2012] [2022-07-19 20:42:20,684 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_3a.c.cil.c[2368,2381] [2022-07-19 20:42:20,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:42:20,736 INFO L208 MainTranslator]: Completed translation [2022-07-19 20:42:20,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:20 WrapperNode [2022-07-19 20:42:20,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 20:42:20,738 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 20:42:20,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 20:42:20,738 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 20:42:20,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:20" (1/1) ... [2022-07-19 20:42:20,762 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:20" (1/1) ... [2022-07-19 20:42:20,791 INFO L137 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 199 [2022-07-19 20:42:20,792 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 20:42:20,792 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 20:42:20,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 20:42:20,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 20:42:20,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:20" (1/1) ... [2022-07-19 20:42:20,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:20" (1/1) ... [2022-07-19 20:42:20,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:20" (1/1) ... [2022-07-19 20:42:20,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:20" (1/1) ... [2022-07-19 20:42:20,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:20" (1/1) ... [2022-07-19 20:42:20,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:20" (1/1) ... [2022-07-19 20:42:20,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:20" (1/1) ... [2022-07-19 20:42:20,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 20:42:20,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 20:42:20,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 20:42:20,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 20:42:20,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:20" (1/1) ... [2022-07-19 20:42:20,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:42:20,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:42:20,851 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 20:42:20,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 20:42:20,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 20:42:20,892 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-19 20:42:20,893 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-19 20:42:20,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 20:42:20,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 20:42:20,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 20:42:20,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 20:42:20,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 20:42:20,990 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 20:42:20,991 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 20:42:21,308 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 20:42:21,314 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 20:42:21,314 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-19 20:42:21,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:42:21 BoogieIcfgContainer [2022-07-19 20:42:21,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 20:42:21,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 20:42:21,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 20:42:21,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 20:42:21,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 08:42:20" (1/3) ... [2022-07-19 20:42:21,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7630640c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:42:21, skipping insertion in model container [2022-07-19 20:42:21,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:20" (2/3) ... [2022-07-19 20:42:21,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7630640c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:42:21, skipping insertion in model container [2022-07-19 20:42:21,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:42:21" (3/3) ... [2022-07-19 20:42:21,321 INFO L111 eAbstractionObserver]: Analyzing ICFG square_4+soft_float_3a.c.cil.c [2022-07-19 20:42:21,330 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 20:42:21,331 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 20:42:21,370 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 20:42:21,375 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@743eb300, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@508242b2 [2022-07-19 20:42:21,375 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 20:42:21,378 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 86 states have (on average 1.697674418604651) internal successors, (146), 89 states have internal predecessors, (146), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-19 20:42:21,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-19 20:42:21,382 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:42:21,383 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:42:21,383 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:42:21,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:42:21,386 INFO L85 PathProgramCache]: Analyzing trace with hash -685161840, now seen corresponding path program 1 times [2022-07-19 20:42:21,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:42:21,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122435760] [2022-07-19 20:42:21,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:42:21,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:42:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:42:21,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:42:21,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:42:21,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122435760] [2022-07-19 20:42:21,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122435760] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:42:21,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:42:21,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 20:42:21,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469118625] [2022-07-19 20:42:21,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:42:21,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 20:42:21,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:42:21,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 20:42:21,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 20:42:21,509 INFO L87 Difference]: Start difference. First operand has 96 states, 86 states have (on average 1.697674418604651) internal successors, (146), 89 states have internal predecessors, (146), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:42:21,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:42:21,528 INFO L93 Difference]: Finished difference Result 187 states and 309 transitions. [2022-07-19 20:42:21,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 20:42:21,530 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-19 20:42:21,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:42:21,534 INFO L225 Difference]: With dead ends: 187 [2022-07-19 20:42:21,535 INFO L226 Difference]: Without dead ends: 87 [2022-07-19 20:42:21,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 20:42:21,539 INFO L413 NwaCegarLoop]: 139 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, 139 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:42:21,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:42:21,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-07-19 20:42:21,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2022-07-19 20:42:21,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 79 states have (on average 1.5063291139240507) internal successors, (119), 80 states have internal predecessors, (119), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 20:42:21,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 128 transitions. [2022-07-19 20:42:21,581 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 128 transitions. Word has length 7 [2022-07-19 20:42:21,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:42:21,582 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 128 transitions. [2022-07-19 20:42:21,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:42:21,583 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 128 transitions. [2022-07-19 20:42:21,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-19 20:42:21,584 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:42:21,584 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:42:21,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 20:42:21,585 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:42:21,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:42:21,586 INFO L85 PathProgramCache]: Analyzing trace with hash -685102258, now seen corresponding path program 1 times [2022-07-19 20:42:21,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:42:21,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707763888] [2022-07-19 20:42:21,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:42:21,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:42:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 20:42:21,608 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 20:42:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 20:42:21,638 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 20:42:21,639 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 20:42:21,641 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-19 20:42:21,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-19 20:42:21,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 20:42:21,645 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-19 20:42:21,647 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 20:42:21,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 08:42:21 BoogieIcfgContainer [2022-07-19 20:42:21,665 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 20:42:21,666 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 20:42:21,666 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 20:42:21,666 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 20:42:21,667 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:42:21" (3/4) ... [2022-07-19 20:42:21,668 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-19 20:42:21,668 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 20:42:21,670 INFO L158 Benchmark]: Toolchain (without parser) took 1271.07ms. Allocated memory was 96.5MB in the beginning and 132.1MB in the end (delta: 35.7MB). Free memory was 71.4MB in the beginning and 93.1MB in the end (delta: -21.6MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2022-07-19 20:42:21,670 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory is still 54.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 20:42:21,672 INFO L158 Benchmark]: CACSL2BoogieTranslator took 337.50ms. Allocated memory was 96.5MB in the beginning and 132.1MB in the end (delta: 35.7MB). Free memory was 71.2MB in the beginning and 103.8MB in the end (delta: -32.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 20:42:21,673 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.77ms. Allocated memory is still 132.1MB. Free memory was 103.8MB in the beginning and 101.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 20:42:21,674 INFO L158 Benchmark]: Boogie Preprocessor took 34.04ms. Allocated memory is still 132.1MB. Free memory was 101.4MB in the beginning and 99.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 20:42:21,674 INFO L158 Benchmark]: RCFGBuilder took 488.41ms. Allocated memory is still 132.1MB. Free memory was 99.7MB in the beginning and 80.7MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-07-19 20:42:21,675 INFO L158 Benchmark]: TraceAbstraction took 348.54ms. Allocated memory is still 132.1MB. Free memory was 79.9MB in the beginning and 93.1MB in the end (delta: -13.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 20:42:21,675 INFO L158 Benchmark]: Witness Printer took 2.75ms. Allocated memory is still 132.1MB. Free memory is still 93.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 20:42:21,679 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory is still 54.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 337.50ms. Allocated memory was 96.5MB in the beginning and 132.1MB in the end (delta: 35.7MB). Free memory was 71.2MB in the beginning and 103.8MB in the end (delta: -32.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.77ms. Allocated memory is still 132.1MB. Free memory was 103.8MB in the beginning and 101.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.04ms. Allocated memory is still 132.1MB. Free memory was 101.4MB in the beginning and 99.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 488.41ms. Allocated memory is still 132.1MB. Free memory was 99.7MB in the beginning and 80.7MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 348.54ms. Allocated memory is still 132.1MB. Free memory was 79.9MB in the beginning and 93.1MB in the end (delta: -13.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.75ms. Allocated memory is still 132.1MB. Free memory is still 93.1MB. 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: [L320] COND TRUE __VERIFIER_nondet_int() [L321] 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: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 96 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 139 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, 139 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=96occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-19 20:42:21,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/square_4+soft_float_3a.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 52e7e3a0d80d0519558794c69b54bf5c07c5549c1d780651d891121aff50735c --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 20:42:23,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 20:42:23,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 20:42:23,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 20:42:23,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 20:42:23,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 20:42:23,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 20:42:23,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 20:42:23,318 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 20:42:23,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 20:42:23,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 20:42:23,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 20:42:23,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 20:42:23,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 20:42:23,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 20:42:23,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 20:42:23,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 20:42:23,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 20:42:23,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 20:42:23,327 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 20:42:23,328 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 20:42:23,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 20:42:23,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 20:42:23,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 20:42:23,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 20:42:23,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 20:42:23,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 20:42:23,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 20:42:23,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 20:42:23,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 20:42:23,338 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 20:42:23,338 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 20:42:23,339 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 20:42:23,339 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 20:42:23,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 20:42:23,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 20:42:23,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 20:42:23,341 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 20:42:23,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 20:42:23,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 20:42:23,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 20:42:23,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 20:42:23,343 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-19 20:42:23,358 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 20:42:23,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 20:42:23,358 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 20:42:23,358 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 20:42:23,359 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 20:42:23,359 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 20:42:23,360 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 20:42:23,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 20:42:23,360 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 20:42:23,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 20:42:23,360 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 20:42:23,360 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 20:42:23,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 20:42:23,361 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 20:42:23,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 20:42:23,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 20:42:23,361 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 20:42:23,361 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 20:42:23,361 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 20:42:23,361 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 20:42:23,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 20:42:23,362 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 20:42:23,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 20:42:23,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 20:42:23,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 20:42:23,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 20:42:23,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:42:23,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 20:42:23,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 20:42:23,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 20:42:23,363 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 20:42:23,363 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 20:42:23,363 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 20:42:23,363 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 20:42:23,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 20:42:23,364 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 20:42:23,364 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52e7e3a0d80d0519558794c69b54bf5c07c5549c1d780651d891121aff50735c [2022-07-19 20:42:23,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 20:42:23,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 20:42:23,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 20:42:23,660 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 20:42:23,661 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 20:42:23,662 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_4+soft_float_3a.c.cil.c [2022-07-19 20:42:23,710 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91801cf04/19c52a01adf8456893fea049f31c7c09/FLAGbdd04a476 [2022-07-19 20:42:24,103 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 20:42:24,110 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_4+soft_float_3a.c.cil.c [2022-07-19 20:42:24,117 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91801cf04/19c52a01adf8456893fea049f31c7c09/FLAGbdd04a476 [2022-07-19 20:42:24,127 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91801cf04/19c52a01adf8456893fea049f31c7c09 [2022-07-19 20:42:24,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 20:42:24,130 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 20:42:24,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 20:42:24,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 20:42:24,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 20:42:24,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:42:24" (1/1) ... [2022-07-19 20:42:24,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fe0c618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:24, skipping insertion in model container [2022-07-19 20:42:24,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:42:24" (1/1) ... [2022-07-19 20:42:24,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 20:42:24,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 20:42:24,273 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_3a.c.cil.c[1999,2012] [2022-07-19 20:42:24,276 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_3a.c.cil.c[2368,2381] [2022-07-19 20:42:24,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:42:24,335 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 20:42:24,348 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_3a.c.cil.c[1999,2012] [2022-07-19 20:42:24,349 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_3a.c.cil.c[2368,2381] [2022-07-19 20:42:24,362 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:42:24,372 INFO L208 MainTranslator]: Completed translation [2022-07-19 20:42:24,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:24 WrapperNode [2022-07-19 20:42:24,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 20:42:24,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 20:42:24,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 20:42:24,374 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 20:42:24,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:24" (1/1) ... [2022-07-19 20:42:24,386 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:24" (1/1) ... [2022-07-19 20:42:24,400 INFO L137 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 129 [2022-07-19 20:42:24,400 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 20:42:24,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 20:42:24,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 20:42:24,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 20:42:24,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:24" (1/1) ... [2022-07-19 20:42:24,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:24" (1/1) ... [2022-07-19 20:42:24,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:24" (1/1) ... [2022-07-19 20:42:24,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:24" (1/1) ... [2022-07-19 20:42:24,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:24" (1/1) ... [2022-07-19 20:42:24,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:24" (1/1) ... [2022-07-19 20:42:24,420 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:24" (1/1) ... [2022-07-19 20:42:24,423 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 20:42:24,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 20:42:24,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 20:42:24,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 20:42:24,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:24" (1/1) ... [2022-07-19 20:42:24,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:42:24,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:42:24,446 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 20:42:24,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 20:42:24,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 20:42:24,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-19 20:42:24,481 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-19 20:42:24,481 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-19 20:42:24,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 20:42:24,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 20:42:24,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 20:42:24,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 20:42:24,538 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 20:42:24,540 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 20:42:26,972 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 20:42:26,977 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 20:42:26,977 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-19 20:42:26,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:42:26 BoogieIcfgContainer [2022-07-19 20:42:26,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 20:42:26,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 20:42:26,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 20:42:26,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 20:42:26,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 08:42:24" (1/3) ... [2022-07-19 20:42:26,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@478c0e66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:42:26, skipping insertion in model container [2022-07-19 20:42:26,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:24" (2/3) ... [2022-07-19 20:42:26,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@478c0e66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:42:26, skipping insertion in model container [2022-07-19 20:42:26,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:42:26" (3/3) ... [2022-07-19 20:42:26,985 INFO L111 eAbstractionObserver]: Analyzing ICFG square_4+soft_float_3a.c.cil.c [2022-07-19 20:42:26,996 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 20:42:26,996 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 20:42:27,038 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 20:42:27,043 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6f08de82, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1ed35e3a [2022-07-19 20:42:27,043 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 20:42:27,058 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 50 states have (on average 1.56) internal successors, (78), 53 states have internal predecessors, (78), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-19 20:42:27,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-19 20:42:27,062 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:42:27,063 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:42:27,063 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:42:27,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:42:27,067 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-07-19 20:42:27,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 20:42:27,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1885911065] [2022-07-19 20:42:27,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:42:27,075 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 20:42:27,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 20:42:27,076 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 20:42:27,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-19 20:42:27,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:42:27,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-19 20:42:27,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:42:27,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:42:27,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 20:42:27,477 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 20:42:27,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1885911065] [2022-07-19 20:42:27,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1885911065] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:42:27,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:42:27,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 20:42:27,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455786571] [2022-07-19 20:42:27,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:42:27,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 20:42:27,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 20:42:27,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 20:42:27,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 20:42:27,502 INFO L87 Difference]: Start difference. First operand has 60 states, 50 states have (on average 1.56) internal successors, (78), 53 states have internal predecessors, (78), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:42:27,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:42:27,532 INFO L93 Difference]: Finished difference Result 115 states and 173 transitions. [2022-07-19 20:42:27,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 20:42:27,534 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-19 20:42:27,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:42:27,542 INFO L225 Difference]: With dead ends: 115 [2022-07-19 20:42:27,543 INFO L226 Difference]: Without dead ends: 51 [2022-07-19 20:42:27,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 20:42:27,551 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:42:27,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:42:27,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-07-19 20:42:27,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-07-19 20:42:27,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 44 states have internal predecessors, (61), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 20:42:27,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 70 transitions. [2022-07-19 20:42:27,593 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 70 transitions. Word has length 7 [2022-07-19 20:42:27,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:42:27,594 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 70 transitions. [2022-07-19 20:42:27,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:42:27,594 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 70 transitions. [2022-07-19 20:42:27,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-19 20:42:27,595 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:42:27,595 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:42:27,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-19 20:42:27,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 20:42:27,814 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:42:27,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:42:27,815 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-07-19 20:42:27,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 20:42:27,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [666028520] [2022-07-19 20:42:27,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:42:27,816 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 20:42:27,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 20:42:27,820 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 20:42:27,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process