./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_5+soft_float_3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_5+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 c47cab6e9e67c4b3363cebe5303809f696c66d6509c3a11e62d36bdf941dfec0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 20:58:55,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 20:58:55,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 20:58:55,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 20:58:55,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 20:58:55,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 20:58:55,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 20:58:55,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 20:58:55,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 20:58:55,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 20:58:55,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 20:58:55,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 20:58:55,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 20:58:55,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 20:58:55,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 20:58:55,748 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 20:58:55,749 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 20:58:55,750 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 20:58:55,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 20:58:55,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 20:58:55,754 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 20:58:55,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 20:58:55,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 20:58:55,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 20:58:55,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 20:58:55,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 20:58:55,760 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 20:58:55,760 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 20:58:55,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 20:58:55,761 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 20:58:55,762 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 20:58:55,763 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 20:58:55,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 20:58:55,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 20:58:55,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 20:58:55,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 20:58:55,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 20:58:55,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 20:58:55,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 20:58:55,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 20:58:55,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 20:58:55,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 20:58:55,769 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 20:58:55,793 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 20:58:55,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 20:58:55,794 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 20:58:55,794 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 20:58:55,795 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 20:58:55,795 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 20:58:55,795 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 20:58:55,796 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 20:58:55,796 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 20:58:55,797 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 20:58:55,797 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 20:58:55,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 20:58:55,797 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 20:58:55,797 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 20:58:55,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 20:58:55,798 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 20:58:55,798 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 20:58:55,798 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 20:58:55,798 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 20:58:55,800 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 20:58:55,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 20:58:55,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 20:58:55,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 20:58:55,800 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 20:58:55,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:58:55,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 20:58:55,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 20:58:55,801 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 20:58:55,801 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 20:58:55,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 20:58:55,802 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 20:58:55,802 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 20:58:55,802 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 20:58:55,802 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c47cab6e9e67c4b3363cebe5303809f696c66d6509c3a11e62d36bdf941dfec0 [2022-07-22 20:58:56,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 20:58:56,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 20:58:56,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 20:58:56,083 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 20:58:56,083 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 20:58:56,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_5+soft_float_3a.c.cil.c [2022-07-22 20:58:56,139 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17e25e724/9bd5c74fbe0e485f80dbac2f10ac77a5/FLAG6051181c1 [2022-07-22 20:58:56,616 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 20:58:56,616 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_5+soft_float_3a.c.cil.c [2022-07-22 20:58:56,624 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17e25e724/9bd5c74fbe0e485f80dbac2f10ac77a5/FLAG6051181c1 [2022-07-22 20:58:57,006 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17e25e724/9bd5c74fbe0e485f80dbac2f10ac77a5 [2022-07-22 20:58:57,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 20:58:57,010 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 20:58:57,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 20:58:57,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 20:58:57,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 20:58:57,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:58:57" (1/1) ... [2022-07-22 20:58:57,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b004f54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:58:57, skipping insertion in model container [2022-07-22 20:58:57,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:58:57" (1/1) ... [2022-07-22 20:58:57,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 20:58:57,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 20:58:57,231 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_5+soft_float_3a.c.cil.c[1998,2011] [2022-07-22 20:58:57,235 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_5+soft_float_3a.c.cil.c[2367,2380] [2022-07-22 20:58:57,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:58:57,323 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 20:58:57,343 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_5+soft_float_3a.c.cil.c[1998,2011] [2022-07-22 20:58:57,346 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_5+soft_float_3a.c.cil.c[2367,2380] [2022-07-22 20:58:57,388 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:58:57,407 INFO L208 MainTranslator]: Completed translation [2022-07-22 20:58:57,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:58:57 WrapperNode [2022-07-22 20:58:57,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 20:58:57,409 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 20:58:57,409 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 20:58:57,409 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 20:58:57,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:58:57" (1/1) ... [2022-07-22 20:58:57,436 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:58:57" (1/1) ... [2022-07-22 20:58:57,468 INFO L137 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 199 [2022-07-22 20:58:57,469 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 20:58:57,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 20:58:57,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 20:58:57,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 20:58:57,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:58:57" (1/1) ... [2022-07-22 20:58:57,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:58:57" (1/1) ... [2022-07-22 20:58:57,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:58:57" (1/1) ... [2022-07-22 20:58:57,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:58:57" (1/1) ... [2022-07-22 20:58:57,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:58:57" (1/1) ... [2022-07-22 20:58:57,515 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:58:57" (1/1) ... [2022-07-22 20:58:57,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:58:57" (1/1) ... [2022-07-22 20:58:57,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 20:58:57,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 20:58:57,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 20:58:57,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 20:58:57,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:58:57" (1/1) ... [2022-07-22 20:58:57,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:58:57,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:58:57,565 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) [2022-07-22 20:58:57,586 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 [2022-07-22 20:58:57,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 20:58:57,607 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-22 20:58:57,607 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-22 20:58:57,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 20:58:57,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 20:58:57,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 20:58:57,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 20:58:57,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 20:58:57,692 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 20:58:57,694 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 20:58:58,065 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 20:58:58,074 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 20:58:58,076 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-22 20:58:58,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:58:58 BoogieIcfgContainer [2022-07-22 20:58:58,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 20:58:58,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 20:58:58,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 20:58:58,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 20:58:58,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 08:58:57" (1/3) ... [2022-07-22 20:58:58,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@88e6a47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:58:58, skipping insertion in model container [2022-07-22 20:58:58,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:58:57" (2/3) ... [2022-07-22 20:58:58,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@88e6a47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:58:58, skipping insertion in model container [2022-07-22 20:58:58,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:58:58" (3/3) ... [2022-07-22 20:58:58,090 INFO L111 eAbstractionObserver]: Analyzing ICFG square_5+soft_float_3a.c.cil.c [2022-07-22 20:58:58,104 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 20:58:58,104 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 20:58:58,215 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 20:58:58,224 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@7007ae2e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2e828416 [2022-07-22 20:58:58,224 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 20:58:58,228 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) [2022-07-22 20:58:58,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-22 20:58:58,235 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:58:58,236 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:58:58,237 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:58:58,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:58:58,243 INFO L85 PathProgramCache]: Analyzing trace with hash -685161840, now seen corresponding path program 1 times [2022-07-22 20:58:58,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:58:58,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121614644] [2022-07-22 20:58:58,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:58:58,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:58:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:58:58,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:58:58,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:58:58,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121614644] [2022-07-22 20:58:58,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121614644] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:58:58,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:58:58,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 20:58:58,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441804444] [2022-07-22 20:58:58,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:58:58,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 20:58:58,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:58:58,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 20:58:58,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 20:58:58,395 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) [2022-07-22 20:58:58,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:58:58,456 INFO L93 Difference]: Finished difference Result 187 states and 309 transitions. [2022-07-22 20:58:58,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 20:58:58,458 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 [2022-07-22 20:58:58,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:58:58,468 INFO L225 Difference]: With dead ends: 187 [2022-07-22 20:58:58,469 INFO L226 Difference]: Without dead ends: 87 [2022-07-22 20:58:58,473 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 [2022-07-22 20:58:58,481 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 [2022-07-22 20:58:58,482 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] [2022-07-22 20:58:58,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-07-22 20:58:58,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2022-07-22 20:58:58,526 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) [2022-07-22 20:58:58,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 128 transitions. [2022-07-22 20:58:58,537 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 128 transitions. Word has length 7 [2022-07-22 20:58:58,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:58:58,538 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 128 transitions. [2022-07-22 20:58:58,539 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) [2022-07-22 20:58:58,540 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 128 transitions. [2022-07-22 20:58:58,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-22 20:58:58,541 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:58:58,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:58:58,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 20:58:58,542 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:58:58,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:58:58,543 INFO L85 PathProgramCache]: Analyzing trace with hash -685102258, now seen corresponding path program 1 times [2022-07-22 20:58:58,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:58:58,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906708389] [2022-07-22 20:58:58,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:58:58,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:58:58,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 20:58:58,579 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 20:58:58,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 20:58:58,625 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 20:58:58,626 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 20:58:58,628 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-22 20:58:58,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-22 20:58:58,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 20:58:58,633 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-22 20:58:58,636 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 20:58:58,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 08:58:58 BoogieIcfgContainer [2022-07-22 20:58:58,660 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 20:58:58,661 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 20:58:58,661 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 20:58:58,661 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 20:58:58,662 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:58:58" (3/4) ... [2022-07-22 20:58:58,664 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-22 20:58:58,665 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 20:58:58,667 INFO L158 Benchmark]: Toolchain (without parser) took 1654.74ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 70.2MB in the beginning and 73.5MB in the end (delta: -3.3MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. [2022-07-22 20:58:58,667 INFO L158 Benchmark]: CDTParser took 0.81ms. Allocated memory is still 98.6MB. Free memory was 56.3MB in the beginning and 56.2MB in the end (delta: 49.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 20:58:58,669 INFO L158 Benchmark]: CACSL2BoogieTranslator took 394.16ms. Allocated memory is still 98.6MB. Free memory was 70.2MB in the beginning and 71.4MB in the end (delta: -1.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-22 20:58:58,670 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.98ms. Allocated memory is still 98.6MB. Free memory was 71.4MB in the beginning and 69.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 20:58:58,672 INFO L158 Benchmark]: Boogie Preprocessor took 56.64ms. Allocated memory is still 98.6MB. Free memory was 69.3MB in the beginning and 67.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 20:58:58,673 INFO L158 Benchmark]: RCFGBuilder took 551.01ms. Allocated memory is still 98.6MB. Free memory was 67.2MB in the beginning and 48.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-07-22 20:58:58,673 INFO L158 Benchmark]: TraceAbstraction took 579.88ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 47.7MB in the beginning and 74.1MB in the end (delta: -26.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 20:58:58,673 INFO L158 Benchmark]: Witness Printer took 3.95ms. Allocated memory is still 119.5MB. Free memory was 74.1MB in the beginning and 73.5MB in the end (delta: 556.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 20:58:58,679 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.81ms. Allocated memory is still 98.6MB. Free memory was 56.3MB in the beginning and 56.2MB in the end (delta: 49.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 394.16ms. Allocated memory is still 98.6MB. Free memory was 70.2MB in the beginning and 71.4MB in the end (delta: -1.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.98ms. Allocated memory is still 98.6MB. Free memory was 71.4MB in the beginning and 69.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.64ms. Allocated memory is still 98.6MB. Free memory was 69.3MB in the beginning and 67.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 551.01ms. Allocated memory is still 98.6MB. Free memory was 67.2MB in the beginning and 48.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 579.88ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 47.7MB in the beginning and 74.1MB in the end (delta: -26.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.95ms. Allocated memory is still 119.5MB. Free memory was 74.1MB in the beginning and 73.5MB in the end (delta: 556.7kB). 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 < 1.3985f) 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: 0.4s, 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, 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 [2022-07-22 20:58:58,727 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_5+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 c47cab6e9e67c4b3363cebe5303809f696c66d6509c3a11e62d36bdf941dfec0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 20:59:00,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 20:59:00,659 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 20:59:00,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 20:59:00,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 20:59:00,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 20:59:00,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 20:59:00,710 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 20:59:00,712 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 20:59:00,724 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 20:59:00,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 20:59:00,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 20:59:00,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 20:59:00,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 20:59:00,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 20:59:00,738 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 20:59:00,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 20:59:00,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 20:59:00,746 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 20:59:00,748 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 20:59:00,753 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 20:59:00,756 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 20:59:00,758 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 20:59:00,759 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 20:59:00,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 20:59:00,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 20:59:00,767 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 20:59:00,767 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 20:59:00,768 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 20:59:00,769 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 20:59:00,770 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 20:59:00,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 20:59:00,772 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 20:59:00,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 20:59:00,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 20:59:00,775 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 20:59:00,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 20:59:00,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 20:59:00,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 20:59:00,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 20:59:00,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 20:59:00,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 20:59:00,782 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-22 20:59:00,825 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 20:59:00,825 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 20:59:00,826 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 20:59:00,826 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 20:59:00,827 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 20:59:00,827 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 20:59:00,829 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 20:59:00,829 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 20:59:00,830 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 20:59:00,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 20:59:00,831 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 20:59:00,831 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 20:59:00,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 20:59:00,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 20:59:00,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 20:59:00,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 20:59:00,832 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-22 20:59:00,832 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-22 20:59:00,832 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-22 20:59:00,833 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 20:59:00,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 20:59:00,833 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 20:59:00,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 20:59:00,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 20:59:00,834 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 20:59:00,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 20:59:00,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:59:00,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 20:59:00,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 20:59:00,835 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 20:59:00,835 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-22 20:59:00,835 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-22 20:59:00,836 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 20:59:00,836 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 20:59:00,836 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 20:59:00,836 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-22 20:59:00,837 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c47cab6e9e67c4b3363cebe5303809f696c66d6509c3a11e62d36bdf941dfec0 [2022-07-22 20:59:01,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 20:59:01,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 20:59:01,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 20:59:01,163 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 20:59:01,163 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 20:59:01,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_5+soft_float_3a.c.cil.c [2022-07-22 20:59:01,216 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9c38f7a0/18558ade11074fef849fd99a8e47f901/FLAG8f501db9d [2022-07-22 20:59:01,672 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 20:59:01,673 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_5+soft_float_3a.c.cil.c [2022-07-22 20:59:01,684 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9c38f7a0/18558ade11074fef849fd99a8e47f901/FLAG8f501db9d [2022-07-22 20:59:02,064 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9c38f7a0/18558ade11074fef849fd99a8e47f901 [2022-07-22 20:59:02,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 20:59:02,067 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 20:59:02,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 20:59:02,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 20:59:02,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 20:59:02,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:59:02" (1/1) ... [2022-07-22 20:59:02,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@afee494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:59:02, skipping insertion in model container [2022-07-22 20:59:02,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:59:02" (1/1) ... [2022-07-22 20:59:02,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 20:59:02,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 20:59:02,218 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_5+soft_float_3a.c.cil.c[1998,2011] [2022-07-22 20:59:02,222 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_5+soft_float_3a.c.cil.c[2367,2380] [2022-07-22 20:59:02,272 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:59:02,293 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 20:59:02,317 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_5+soft_float_3a.c.cil.c[1998,2011] [2022-07-22 20:59:02,318 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_5+soft_float_3a.c.cil.c[2367,2380] [2022-07-22 20:59:02,339 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:59:02,351 INFO L208 MainTranslator]: Completed translation [2022-07-22 20:59:02,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:59:02 WrapperNode [2022-07-22 20:59:02,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 20:59:02,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 20:59:02,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 20:59:02,353 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 20:59:02,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:59:02" (1/1) ... [2022-07-22 20:59:02,366 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:59:02" (1/1) ... [2022-07-22 20:59:02,387 INFO L137 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 129 [2022-07-22 20:59:02,387 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 20:59:02,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 20:59:02,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 20:59:02,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 20:59:02,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:59:02" (1/1) ... [2022-07-22 20:59:02,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:59:02" (1/1) ... [2022-07-22 20:59:02,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:59:02" (1/1) ... [2022-07-22 20:59:02,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:59:02" (1/1) ... [2022-07-22 20:59:02,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:59:02" (1/1) ... [2022-07-22 20:59:02,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:59:02" (1/1) ... [2022-07-22 20:59:02,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:59:02" (1/1) ... [2022-07-22 20:59:02,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 20:59:02,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 20:59:02,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 20:59:02,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 20:59:02,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:59:02" (1/1) ... [2022-07-22 20:59:02,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:59:02,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:59:02,485 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) [2022-07-22 20:59:02,511 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 [2022-07-22 20:59:02,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 20:59:02,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-22 20:59:02,523 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-22 20:59:02,524 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-22 20:59:02,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 20:59:02,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 20:59:02,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 20:59:02,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 20:59:02,596 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 20:59:02,597 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 20:59:05,133 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 20:59:05,140 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 20:59:05,140 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-22 20:59:05,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:59:05 BoogieIcfgContainer [2022-07-22 20:59:05,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 20:59:05,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 20:59:05,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 20:59:05,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 20:59:05,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 08:59:02" (1/3) ... [2022-07-22 20:59:05,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bd50690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:59:05, skipping insertion in model container [2022-07-22 20:59:05,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:59:02" (2/3) ... [2022-07-22 20:59:05,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bd50690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:59:05, skipping insertion in model container [2022-07-22 20:59:05,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:59:05" (3/3) ... [2022-07-22 20:59:05,149 INFO L111 eAbstractionObserver]: Analyzing ICFG square_5+soft_float_3a.c.cil.c [2022-07-22 20:59:05,162 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 20:59:05,162 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 20:59:05,204 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 20:59:05,209 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@39391024, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@24842bf9 [2022-07-22 20:59:05,210 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 20:59:05,214 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) [2022-07-22 20:59:05,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-22 20:59:05,219 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:59:05,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:59:05,220 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:59:05,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:59:05,225 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-07-22 20:59:05,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 20:59:05,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [15649107] [2022-07-22 20:59:05,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:59:05,236 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 20:59:05,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 20:59:05,239 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) [2022-07-22 20:59:05,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-22 20:59:05,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:59:05,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-22 20:59:05,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:59:05,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:59:05,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:59:05,757 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 20:59:05,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [15649107] [2022-07-22 20:59:05,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [15649107] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:59:05,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:59:05,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 20:59:05,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981042699] [2022-07-22 20:59:05,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:59:05,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 20:59:05,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 20:59:05,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 20:59:05,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 20:59:05,799 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) [2022-07-22 20:59:05,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:59:05,837 INFO L93 Difference]: Finished difference Result 115 states and 173 transitions. [2022-07-22 20:59:05,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 20:59:05,839 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 [2022-07-22 20:59:05,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:59:05,845 INFO L225 Difference]: With dead ends: 115 [2022-07-22 20:59:05,846 INFO L226 Difference]: Without dead ends: 51 [2022-07-22 20:59:05,849 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 [2022-07-22 20:59:05,852 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 [2022-07-22 20:59:05,854 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] [2022-07-22 20:59:05,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-07-22 20:59:05,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-07-22 20:59:05,903 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) [2022-07-22 20:59:05,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 70 transitions. [2022-07-22 20:59:05,910 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 70 transitions. Word has length 7 [2022-07-22 20:59:05,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:59:05,911 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 70 transitions. [2022-07-22 20:59:05,911 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) [2022-07-22 20:59:05,911 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 70 transitions. [2022-07-22 20:59:05,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-22 20:59:05,912 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:59:05,912 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:59:05,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-22 20:59:06,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 20:59:06,124 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:59:06,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:59:06,125 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-07-22 20:59:06,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 20:59:06,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [891302565] [2022-07-22 20:59:06,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:59:06,125 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 20:59:06,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 20:59:06,127 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) [2022-07-22 20:59:06,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process