./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_7+soft_float_1-3a.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_7+soft_float_1-3a.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 613205d4a69cfcfbc25451727273468eeac5e6faf4f74e1e8c3a83a65bc4c664 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 20:48:16,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 20:48:16,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 20:48:16,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 20:48:16,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 20:48:16,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 20:48:16,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 20:48:16,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 20:48:16,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 20:48:16,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 20:48:16,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 20:48:16,690 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 20:48:16,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 20:48:16,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 20:48:16,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 20:48:16,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 20:48:16,693 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 20:48:16,694 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 20:48:16,695 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 20:48:16,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 20:48:16,697 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 20:48:16,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 20:48:16,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 20:48:16,700 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 20:48:16,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 20:48:16,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 20:48:16,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 20:48:16,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 20:48:16,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 20:48:16,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 20:48:16,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 20:48:16,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 20:48:16,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 20:48:16,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 20:48:16,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 20:48:16,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 20:48:16,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 20:48:16,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 20:48:16,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 20:48:16,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 20:48:16,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 20:48:16,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 20:48:16,711 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 20:48:16,725 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 20:48:16,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 20:48:16,726 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 20:48:16,726 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 20:48:16,727 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 20:48:16,727 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 20:48:16,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 20:48:16,728 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 20:48:16,728 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 20:48:16,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 20:48:16,728 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 20:48:16,729 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 20:48:16,729 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 20:48:16,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 20:48:16,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 20:48:16,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 20:48:16,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 20:48:16,730 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 20:48:16,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 20:48:16,730 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 20:48:16,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 20:48:16,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 20:48:16,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 20:48:16,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 20:48:16,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:48:16,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 20:48:16,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 20:48:16,732 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 20:48:16,732 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 20:48:16,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 20:48:16,732 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 20:48:16,732 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 20:48:16,733 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 20:48:16,733 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 613205d4a69cfcfbc25451727273468eeac5e6faf4f74e1e8c3a83a65bc4c664 [2022-07-19 20:48:16,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 20:48:16,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 20:48:16,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 20:48:16,897 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 20:48:16,898 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 20:48:16,899 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c [2022-07-19 20:48:16,951 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d457d6081/3b4c8ff59ec047bf9f074c7d750e7297/FLAG4552c6139 [2022-07-19 20:48:17,324 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 20:48:17,324 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c [2022-07-19 20:48:17,333 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d457d6081/3b4c8ff59ec047bf9f074c7d750e7297/FLAG4552c6139 [2022-07-19 20:48:17,343 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d457d6081/3b4c8ff59ec047bf9f074c7d750e7297 [2022-07-19 20:48:17,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 20:48:17,346 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 20:48:17,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 20:48:17,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 20:48:17,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 20:48:17,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:48:17" (1/1) ... [2022-07-19 20:48:17,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e5eced5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:48:17, skipping insertion in model container [2022-07-19 20:48:17,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:48:17" (1/1) ... [2022-07-19 20:48:17,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 20:48:17,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 20:48:17,523 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_7+soft_float_1-3a.c.cil.c[1995,2008] [2022-07-19 20:48:17,529 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_7+soft_float_1-3a.c.cil.c[2364,2377] [2022-07-19 20:48:17,577 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:48:17,590 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 20:48:17,599 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_7+soft_float_1-3a.c.cil.c[1995,2008] [2022-07-19 20:48:17,599 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_7+soft_float_1-3a.c.cil.c[2364,2377] [2022-07-19 20:48:17,631 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:48:17,645 INFO L208 MainTranslator]: Completed translation [2022-07-19 20:48:17,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:48:17 WrapperNode [2022-07-19 20:48:17,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 20:48:17,647 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 20:48:17,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 20:48:17,649 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 20:48:17,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:48:17" (1/1) ... [2022-07-19 20:48:17,662 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:48:17" (1/1) ... [2022-07-19 20:48:17,693 INFO L137 Inliner]: procedures = 27, calls = 21, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 234 [2022-07-19 20:48:17,706 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 20:48:17,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 20:48:17,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 20:48:17,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 20:48:17,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:48:17" (1/1) ... [2022-07-19 20:48:17,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:48:17" (1/1) ... [2022-07-19 20:48:17,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:48:17" (1/1) ... [2022-07-19 20:48:17,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:48:17" (1/1) ... [2022-07-19 20:48:17,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:48:17" (1/1) ... [2022-07-19 20:48:17,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:48:17" (1/1) ... [2022-07-19 20:48:17,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:48:17" (1/1) ... [2022-07-19 20:48:17,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 20:48:17,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 20:48:17,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 20:48:17,743 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 20:48:17,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:48:17" (1/1) ... [2022-07-19 20:48:17,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:48:17,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:48:17,817 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 20:48:17,823 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 20:48:17,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 20:48:17,844 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-19 20:48:17,845 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-19 20:48:17,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 20:48:17,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 20:48:17,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 20:48:17,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 20:48:17,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 20:48:17,936 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 20:48:17,937 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 20:48:18,205 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 20:48:18,224 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 20:48:18,224 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-19 20:48:18,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:48:18 BoogieIcfgContainer [2022-07-19 20:48:18,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 20:48:18,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 20:48:18,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 20:48:18,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 20:48:18,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 08:48:17" (1/3) ... [2022-07-19 20:48:18,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cc8150b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:48:18, skipping insertion in model container [2022-07-19 20:48:18,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:48:17" (2/3) ... [2022-07-19 20:48:18,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cc8150b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:48:18, skipping insertion in model container [2022-07-19 20:48:18,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:48:18" (3/3) ... [2022-07-19 20:48:18,238 INFO L111 eAbstractionObserver]: Analyzing ICFG square_7+soft_float_1-3a.c.cil.c [2022-07-19 20:48:18,248 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 20:48:18,248 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 20:48:18,282 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 20:48:18,286 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@639555e9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@18e35d93 [2022-07-19 20:48:18,287 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 20:48:18,290 INFO L276 IsEmpty]: Start isEmpty. Operand has 115 states, 101 states have (on average 1.702970297029703) internal successors, (172), 105 states have internal predecessors, (172), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-19 20:48:18,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-19 20:48:18,294 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:48:18,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:48:18,295 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:48:18,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:48:18,299 INFO L85 PathProgramCache]: Analyzing trace with hash -685161840, now seen corresponding path program 1 times [2022-07-19 20:48:18,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:48:18,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299215880] [2022-07-19 20:48:18,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:48:18,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:48:18,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:48:18,415 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 20:48:18,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:48:18,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299215880] [2022-07-19 20:48:18,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299215880] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:48:18,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:48:18,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 20:48:18,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271984538] [2022-07-19 20:48:18,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:48:18,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 20:48:18,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:48:18,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 20:48:18,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 20:48:18,450 INFO L87 Difference]: Start difference. First operand has 115 states, 101 states have (on average 1.702970297029703) internal successors, (172), 105 states have internal predecessors, (172), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) 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 20:48:18,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:48:18,472 INFO L93 Difference]: Finished difference Result 225 states and 381 transitions. [2022-07-19 20:48:18,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 20:48:18,474 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 20:48:18,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:48:18,480 INFO L225 Difference]: With dead ends: 225 [2022-07-19 20:48:18,480 INFO L226 Difference]: Without dead ends: 108 [2022-07-19 20:48:18,482 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 20:48:18,484 INFO L413 NwaCegarLoop]: 170 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, 170 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 20:48:18,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:48:18,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-07-19 20:48:18,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-07-19 20:48:18,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 95 states have (on average 1.5157894736842106) internal successors, (144), 98 states have internal predecessors, (144), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-19 20:48:18,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 161 transitions. [2022-07-19 20:48:18,521 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 161 transitions. Word has length 7 [2022-07-19 20:48:18,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:48:18,521 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 161 transitions. [2022-07-19 20:48:18,521 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 20:48:18,521 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 161 transitions. [2022-07-19 20:48:18,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-19 20:48:18,522 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:48:18,522 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:48:18,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 20:48:18,522 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:48:18,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:48:18,523 INFO L85 PathProgramCache]: Analyzing trace with hash -685102258, now seen corresponding path program 1 times [2022-07-19 20:48:18,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:48:18,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187788167] [2022-07-19 20:48:18,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:48:18,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:48:18,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 20:48:18,536 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 20:48:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 20:48:18,554 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 20:48:18,554 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 20:48:18,555 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-19 20:48:18,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-19 20:48:18,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 20:48:18,559 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-19 20:48:18,561 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 20:48:18,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 08:48:18 BoogieIcfgContainer [2022-07-19 20:48:18,574 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 20:48:18,576 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 20:48:18,576 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 20:48:18,576 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 20:48:18,577 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:48:18" (3/4) ... [2022-07-19 20:48:18,579 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-19 20:48:18,579 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 20:48:18,580 INFO L158 Benchmark]: Toolchain (without parser) took 1232.98ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 83.6MB in the beginning and 85.0MB in the end (delta: -1.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-07-19 20:48:18,580 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 113.2MB. Free memory was 69.4MB in the beginning and 69.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 20:48:18,583 INFO L158 Benchmark]: CACSL2BoogieTranslator took 298.55ms. Allocated memory is still 113.2MB. Free memory was 83.4MB in the beginning and 83.0MB in the end (delta: 359.7kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 20:48:18,584 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.35ms. Allocated memory is still 113.2MB. Free memory was 83.0MB in the beginning and 80.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 20:48:18,584 INFO L158 Benchmark]: Boogie Preprocessor took 36.07ms. Allocated memory is still 113.2MB. Free memory was 80.5MB in the beginning and 78.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 20:48:18,584 INFO L158 Benchmark]: RCFGBuilder took 482.92ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 78.8MB in the beginning and 110.3MB in the end (delta: -31.5MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. [2022-07-19 20:48:18,584 INFO L158 Benchmark]: TraceAbstraction took 340.63ms. Allocated memory is still 136.3MB. Free memory was 110.8MB in the beginning and 85.0MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-07-19 20:48:18,585 INFO L158 Benchmark]: Witness Printer took 2.92ms. Allocated memory is still 136.3MB. Free memory is still 85.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 20:48:18,589 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 113.2MB. Free memory was 69.4MB in the beginning and 69.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 298.55ms. Allocated memory is still 113.2MB. Free memory was 83.4MB in the beginning and 83.0MB in the end (delta: 359.7kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.35ms. Allocated memory is still 113.2MB. Free memory was 83.0MB in the beginning and 80.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.07ms. Allocated memory is still 113.2MB. Free memory was 80.5MB in the beginning and 78.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 482.92ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 78.8MB in the beginning and 110.3MB in the end (delta: -31.5MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. * TraceAbstraction took 340.63ms. Allocated memory is still 136.3MB. Free memory was 110.8MB in the beginning and 85.0MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 2.92ms. Allocated memory is still 136.3MB. Free memory is still 85.0MB. 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: [L402] COND TRUE __VERIFIER_nondet_int() [L403] 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 < 1.4f) 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, 115 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 170 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, 170 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=115occurred 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 20:48:18,617 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_7+soft_float_1-3a.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 613205d4a69cfcfbc25451727273468eeac5e6faf4f74e1e8c3a83a65bc4c664 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 20:48:20,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 20:48:20,309 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 20:48:20,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 20:48:20,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 20:48:20,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 20:48:20,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 20:48:20,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 20:48:20,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 20:48:20,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 20:48:20,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 20:48:20,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 20:48:20,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 20:48:20,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 20:48:20,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 20:48:20,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 20:48:20,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 20:48:20,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 20:48:20,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 20:48:20,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 20:48:20,367 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 20:48:20,368 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 20:48:20,369 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 20:48:20,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 20:48:20,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 20:48:20,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 20:48:20,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 20:48:20,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 20:48:20,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 20:48:20,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 20:48:20,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 20:48:20,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 20:48:20,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 20:48:20,380 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 20:48:20,381 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 20:48:20,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 20:48:20,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 20:48:20,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 20:48:20,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 20:48:20,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 20:48:20,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 20:48:20,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 20:48:20,390 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-19 20:48:20,421 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 20:48:20,422 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 20:48:20,422 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 20:48:20,422 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 20:48:20,423 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 20:48:20,423 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 20:48:20,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 20:48:20,424 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 20:48:20,424 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 20:48:20,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 20:48:20,425 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 20:48:20,425 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 20:48:20,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 20:48:20,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 20:48:20,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 20:48:20,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 20:48:20,426 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 20:48:20,426 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 20:48:20,426 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 20:48:20,426 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 20:48:20,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 20:48:20,426 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 20:48:20,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 20:48:20,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 20:48:20,427 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 20:48:20,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 20:48:20,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:48:20,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 20:48:20,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 20:48:20,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 20:48:20,428 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 20:48:20,428 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 20:48:20,428 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 20:48:20,428 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 20:48:20,429 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 20:48:20,429 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 20:48:20,429 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 613205d4a69cfcfbc25451727273468eeac5e6faf4f74e1e8c3a83a65bc4c664 [2022-07-19 20:48:20,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 20:48:20,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 20:48:20,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 20:48:20,703 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 20:48:20,703 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 20:48:20,704 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c [2022-07-19 20:48:20,766 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dca92bf01/3ea92d6b156d4c77bf891d2e2fc7dfd2/FLAG0e62fe118 [2022-07-19 20:48:21,119 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 20:48:21,120 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c [2022-07-19 20:48:21,131 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dca92bf01/3ea92d6b156d4c77bf891d2e2fc7dfd2/FLAG0e62fe118 [2022-07-19 20:48:21,540 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dca92bf01/3ea92d6b156d4c77bf891d2e2fc7dfd2 [2022-07-19 20:48:21,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 20:48:21,547 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 20:48:21,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 20:48:21,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 20:48:21,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 20:48:21,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:48:21" (1/1) ... [2022-07-19 20:48:21,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e307156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:48:21, skipping insertion in model container [2022-07-19 20:48:21,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:48:21" (1/1) ... [2022-07-19 20:48:21,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 20:48:21,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 20:48:21,736 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_7+soft_float_1-3a.c.cil.c[1995,2008] [2022-07-19 20:48:21,742 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_7+soft_float_1-3a.c.cil.c[2364,2377] [2022-07-19 20:48:21,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:48:21,831 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 20:48:21,853 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_7+soft_float_1-3a.c.cil.c[1995,2008] [2022-07-19 20:48:21,855 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_7+soft_float_1-3a.c.cil.c[2364,2377] [2022-07-19 20:48:21,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:48:21,896 INFO L208 MainTranslator]: Completed translation [2022-07-19 20:48:21,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:48:21 WrapperNode [2022-07-19 20:48:21,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 20:48:21,897 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 20:48:21,897 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 20:48:21,898 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 20:48:21,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:48:21" (1/1) ... [2022-07-19 20:48:21,921 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:48:21" (1/1) ... [2022-07-19 20:48:21,937 INFO L137 Inliner]: procedures = 28, calls = 21, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 164 [2022-07-19 20:48:21,937 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 20:48:21,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 20:48:21,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 20:48:21,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 20:48:21,944 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:48:21" (1/1) ... [2022-07-19 20:48:21,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:48:21" (1/1) ... [2022-07-19 20:48:21,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:48:21" (1/1) ... [2022-07-19 20:48:21,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:48:21" (1/1) ... [2022-07-19 20:48:21,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:48:21" (1/1) ... [2022-07-19 20:48:21,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:48:21" (1/1) ... [2022-07-19 20:48:21,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:48:21" (1/1) ... [2022-07-19 20:48:21,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 20:48:21,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 20:48:21,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 20:48:21,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 20:48:21,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:48:21" (1/1) ... [2022-07-19 20:48:21,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:48:21,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:48:22,038 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 20:48:22,059 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 20:48:22,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 20:48:22,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-19 20:48:22,069 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-19 20:48:22,069 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-19 20:48:22,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 20:48:22,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 20:48:22,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 20:48:22,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 20:48:22,162 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 20:48:22,163 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 20:48:24,668 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 20:48:24,673 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 20:48:24,673 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-19 20:48:24,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:48:24 BoogieIcfgContainer [2022-07-19 20:48:24,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 20:48:24,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 20:48:24,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 20:48:24,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 20:48:24,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 08:48:21" (1/3) ... [2022-07-19 20:48:24,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@246da80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:48:24, skipping insertion in model container [2022-07-19 20:48:24,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:48:21" (2/3) ... [2022-07-19 20:48:24,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@246da80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:48:24, skipping insertion in model container [2022-07-19 20:48:24,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:48:24" (3/3) ... [2022-07-19 20:48:24,692 INFO L111 eAbstractionObserver]: Analyzing ICFG square_7+soft_float_1-3a.c.cil.c [2022-07-19 20:48:24,702 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 20:48:24,702 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 20:48:24,745 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 20:48:24,750 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@51b329b7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3bc460ed [2022-07-19 20:48:24,751 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 20:48:24,754 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 67 states have (on average 1.5820895522388059) internal successors, (106), 71 states have internal predecessors, (106), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-19 20:48:24,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-19 20:48:24,758 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:48:24,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:48:24,760 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:48:24,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:48:24,764 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-07-19 20:48:24,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 20:48:24,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [208270182] [2022-07-19 20:48:24,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:48:24,773 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 20:48:24,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 20:48:24,775 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 20:48:24,776 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 20:48:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:48:25,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-19 20:48:25,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:48:25,170 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 20:48:25,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 20:48:25,171 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 20:48:25,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [208270182] [2022-07-19 20:48:25,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [208270182] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:48:25,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:48:25,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 20:48:25,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361474996] [2022-07-19 20:48:25,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:48:25,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 20:48:25,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 20:48:25,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 20:48:25,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 20:48:25,208 INFO L87 Difference]: Start difference. First operand has 81 states, 67 states have (on average 1.5820895522388059) internal successors, (106), 71 states have internal predecessors, (106), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) 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 20:48:25,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:48:25,233 INFO L93 Difference]: Finished difference Result 157 states and 249 transitions. [2022-07-19 20:48:25,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 20:48:25,235 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 20:48:25,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:48:25,240 INFO L225 Difference]: With dead ends: 157 [2022-07-19 20:48:25,240 INFO L226 Difference]: Without dead ends: 74 [2022-07-19 20:48:25,242 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 20:48:25,246 INFO L413 NwaCegarLoop]: 117 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, 117 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 20:48:25,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:48:25,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-07-19 20:48:25,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-07-19 20:48:25,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 64 states have internal predecessors, (91), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-19 20:48:25,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 108 transitions. [2022-07-19 20:48:25,273 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 108 transitions. Word has length 7 [2022-07-19 20:48:25,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:48:25,273 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 108 transitions. [2022-07-19 20:48:25,273 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 20:48:25,273 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 108 transitions. [2022-07-19 20:48:25,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-19 20:48:25,273 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:48:25,273 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:48:25,291 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 20:48:25,482 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 20:48:25,483 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:48:25,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:48:25,483 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-07-19 20:48:25,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 20:48:25,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1194290209] [2022-07-19 20:48:25,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:48:25,484 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 20:48:25,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 20:48:25,486 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 20:48:25,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process