./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_4+soft_float_4-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/square_4+soft_float_4-3a.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 6266dcc240f970a5b491753808ae5c0bb4e18ac4824a7135095a19951d4d9404 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 20:42:36,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 20:42:36,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 20:42:36,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 20:42:36,424 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 20:42:36,425 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 20:42:36,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 20:42:36,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 20:42:36,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 20:42:36,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 20:42:36,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 20:42:36,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 20:42:36,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 20:42:36,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 20:42:36,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 20:42:36,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 20:42:36,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 20:42:36,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 20:42:36,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 20:42:36,447 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 20:42:36,448 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 20:42:36,448 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 20:42:36,449 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 20:42:36,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 20:42:36,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 20:42:36,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 20:42:36,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 20:42:36,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 20:42:36,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 20:42:36,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 20:42:36,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 20:42:36,454 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 20:42:36,455 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 20:42:36,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 20:42:36,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 20:42:36,457 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 20:42:36,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 20:42:36,458 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 20:42:36,458 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 20:42:36,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 20:42:36,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 20:42:36,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 20:42:36,461 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 20:42:36,474 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 20:42:36,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 20:42:36,478 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 20:42:36,479 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 20:42:36,479 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 20:42:36,479 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 20:42:36,480 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 20:42:36,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 20:42:36,480 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 20:42:36,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 20:42:36,481 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 20:42:36,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 20:42:36,481 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 20:42:36,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 20:42:36,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 20:42:36,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 20:42:36,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 20:42:36,482 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 20:42:36,482 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 20:42:36,482 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 20:42:36,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 20:42:36,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 20:42:36,483 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 20:42:36,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 20:42:36,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:42:36,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 20:42:36,484 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 20:42:36,484 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 20:42:36,484 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 20:42:36,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 20:42:36,484 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 20:42:36,485 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 20:42:36,485 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 20:42:36,485 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6266dcc240f970a5b491753808ae5c0bb4e18ac4824a7135095a19951d4d9404 [2022-07-19 20:42:36,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 20:42:36,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 20:42:36,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 20:42:36,670 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 20:42:36,671 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 20:42:36,672 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_4+soft_float_4-3a.c.cil.c [2022-07-19 20:42:36,715 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17e11f043/a1d2e7e72e4a438baf81b0d83bd94b83/FLAG0203be844 [2022-07-19 20:42:37,062 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 20:42:37,064 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_4+soft_float_4-3a.c.cil.c [2022-07-19 20:42:37,072 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17e11f043/a1d2e7e72e4a438baf81b0d83bd94b83/FLAG0203be844 [2022-07-19 20:42:37,492 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17e11f043/a1d2e7e72e4a438baf81b0d83bd94b83 [2022-07-19 20:42:37,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 20:42:37,495 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 20:42:37,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 20:42:37,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 20:42:37,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 20:42:37,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:42:37" (1/1) ... [2022-07-19 20:42:37,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@439d635b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:37, skipping insertion in model container [2022-07-19 20:42:37,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:42:37" (1/1) ... [2022-07-19 20:42:37,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 20:42:37,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 20:42:37,697 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_4+soft_float_4-3a.c.cil.c[1999,2012] [2022-07-19 20:42:37,705 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_4+soft_float_4-3a.c.cil.c[2368,2381] [2022-07-19 20:42:37,765 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:42:37,773 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 20:42:37,793 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_4+soft_float_4-3a.c.cil.c[1999,2012] [2022-07-19 20:42:37,797 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_4+soft_float_4-3a.c.cil.c[2368,2381] [2022-07-19 20:42:37,831 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:42:37,844 INFO L208 MainTranslator]: Completed translation [2022-07-19 20:42:37,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:37 WrapperNode [2022-07-19 20:42:37,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 20:42:37,847 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 20:42:37,847 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 20:42:37,847 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 20:42:37,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:37" (1/1) ... [2022-07-19 20:42:37,871 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:37" (1/1) ... [2022-07-19 20:42:37,896 INFO L137 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2022-07-19 20:42:37,896 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 20:42:37,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 20:42:37,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 20:42:37,897 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 20:42:37,903 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:37" (1/1) ... [2022-07-19 20:42:37,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:37" (1/1) ... [2022-07-19 20:42:37,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:37" (1/1) ... [2022-07-19 20:42:37,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:37" (1/1) ... [2022-07-19 20:42:37,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:37" (1/1) ... [2022-07-19 20:42:37,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:37" (1/1) ... [2022-07-19 20:42:37,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:37" (1/1) ... [2022-07-19 20:42:37,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 20:42:37,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 20:42:37,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 20:42:37,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 20:42:37,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:37" (1/1) ... [2022-07-19 20:42:37,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:42:37,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:42:37,968 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 20:42:37,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 20:42:37,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 20:42:37,998 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-19 20:42:37,998 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-19 20:42:37,998 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2022-07-19 20:42:37,998 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2022-07-19 20:42:37,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 20:42:37,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 20:42:37,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 20:42:37,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 20:42:37,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 20:42:38,068 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 20:42:38,070 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 20:42:38,320 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 20:42:38,326 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 20:42:38,327 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-19 20:42:38,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:42:38 BoogieIcfgContainer [2022-07-19 20:42:38,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 20:42:38,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 20:42:38,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 20:42:38,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 20:42:38,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 08:42:37" (1/3) ... [2022-07-19 20:42:38,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b2f27c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:42:38, skipping insertion in model container [2022-07-19 20:42:38,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:37" (2/3) ... [2022-07-19 20:42:38,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b2f27c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:42:38, skipping insertion in model container [2022-07-19 20:42:38,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:42:38" (3/3) ... [2022-07-19 20:42:38,355 INFO L111 eAbstractionObserver]: Analyzing ICFG square_4+soft_float_4-3a.c.cil.c [2022-07-19 20:42:38,370 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 20:42:38,371 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 20:42:38,414 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 20:42:38,420 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@7f8c1ef1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3f7ed19e [2022-07-19 20:42:38,420 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 20:42:38,424 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 82 states have (on average 1.670731707317073) internal successors, (137), 84 states have internal predecessors, (137), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-19 20:42:38,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-19 20:42:38,430 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:42:38,431 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:42:38,431 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:42:38,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:42:38,435 INFO L85 PathProgramCache]: Analyzing trace with hash -685161840, now seen corresponding path program 1 times [2022-07-19 20:42:38,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:42:38,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416376619] [2022-07-19 20:42:38,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:42:38,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:42:38,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:42:38,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:42:38,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:42:38,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416376619] [2022-07-19 20:42:38,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416376619] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:42:38,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:42:38,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 20:42:38,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142331862] [2022-07-19 20:42:38,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:42:38,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 20:42:38,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:42:38,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 20:42:38,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 20:42:38,569 INFO L87 Difference]: Start difference. First operand has 97 states, 82 states have (on average 1.670731707317073) internal successors, (137), 84 states have internal predecessors, (137), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 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 20:42:38,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:42:38,601 INFO L93 Difference]: Finished difference Result 189 states and 311 transitions. [2022-07-19 20:42:38,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 20:42:38,603 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-19 20:42:38,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:42:38,609 INFO L225 Difference]: With dead ends: 189 [2022-07-19 20:42:38,609 INFO L226 Difference]: Without dead ends: 90 [2022-07-19 20:42:38,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 20:42:38,614 INFO L413 NwaCegarLoop]: 135 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, 135 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:42:38,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:42:38,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-07-19 20:42:38,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2022-07-19 20:42:38,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 76 states have (on average 1.4473684210526316) internal successors, (110), 78 states have internal predecessors, (110), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-19 20:42:38,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 127 transitions. [2022-07-19 20:42:38,648 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 127 transitions. Word has length 7 [2022-07-19 20:42:38,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:42:38,648 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 127 transitions. [2022-07-19 20:42:38,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:42:38,648 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 127 transitions. [2022-07-19 20:42:38,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-19 20:42:38,649 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:42:38,649 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:42:38,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 20:42:38,650 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:42:38,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:42:38,651 INFO L85 PathProgramCache]: Analyzing trace with hash -685102258, now seen corresponding path program 1 times [2022-07-19 20:42:38,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:42:38,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461907450] [2022-07-19 20:42:38,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:42:38,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:42:38,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 20:42:38,667 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 20:42:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 20:42:38,701 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 20:42:38,702 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 20:42:38,703 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-19 20:42:38,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-19 20:42:38,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 20:42:38,707 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-19 20:42:38,709 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 20:42:38,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 08:42:38 BoogieIcfgContainer [2022-07-19 20:42:38,727 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 20:42:38,728 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 20:42:38,728 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 20:42:38,729 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 20:42:38,729 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:42:38" (3/4) ... [2022-07-19 20:42:38,731 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-19 20:42:38,731 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 20:42:38,732 INFO L158 Benchmark]: Toolchain (without parser) took 1236.49ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 66.5MB in the beginning and 71.0MB in the end (delta: -4.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-07-19 20:42:38,732 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 98.6MB. Free memory was 53.4MB in the beginning and 53.3MB in the end (delta: 41.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 20:42:38,733 INFO L158 Benchmark]: CACSL2BoogieTranslator took 345.57ms. Allocated memory is still 98.6MB. Free memory was 66.2MB in the beginning and 69.9MB in the end (delta: -3.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 20:42:38,733 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.61ms. Allocated memory is still 98.6MB. Free memory was 69.9MB in the beginning and 68.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 20:42:38,733 INFO L158 Benchmark]: Boogie Preprocessor took 38.66ms. Allocated memory is still 98.6MB. Free memory was 68.1MB in the beginning and 66.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 20:42:38,734 INFO L158 Benchmark]: RCFGBuilder took 392.44ms. Allocated memory is still 98.6MB. Free memory was 66.4MB in the beginning and 48.6MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-07-19 20:42:38,734 INFO L158 Benchmark]: TraceAbstraction took 385.19ms. Allocated memory is still 119.5MB. Free memory was 96.1MB in the beginning and 71.6MB in the end (delta: 24.5MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. [2022-07-19 20:42:38,734 INFO L158 Benchmark]: Witness Printer took 3.04ms. Allocated memory is still 119.5MB. Free memory was 71.6MB in the beginning and 71.0MB in the end (delta: 578.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 20:42:38,738 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 98.6MB. Free memory was 53.4MB in the beginning and 53.3MB in the end (delta: 41.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 345.57ms. Allocated memory is still 98.6MB. Free memory was 66.2MB in the beginning and 69.9MB in the end (delta: -3.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.61ms. Allocated memory is still 98.6MB. Free memory was 69.9MB in the beginning and 68.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.66ms. Allocated memory is still 98.6MB. Free memory was 68.1MB in the beginning and 66.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 392.44ms. Allocated memory is still 98.6MB. Free memory was 66.4MB in the beginning and 48.6MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 385.19ms. Allocated memory is still 119.5MB. Free memory was 96.1MB in the beginning and 71.6MB in the end (delta: 24.5MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. * Witness Printer took 3.04ms. Allocated memory is still 119.5MB. Free memory was 71.6MB in the beginning and 71.0MB in the end (delta: 578.6kB). 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: [L309] COND TRUE __VERIFIER_nondet_int() [L310] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=49, x=49] [L47] COND TRUE !(result >= 0.0f && result < 1.39844f) VAL [IN=49, x=49] [L48] reach_error() VAL [IN=49, x=49] - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 97 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, 135 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, 135 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=97occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-19 20:42:38,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/square_4+soft_float_4-3a.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 6266dcc240f970a5b491753808ae5c0bb4e18ac4824a7135095a19951d4d9404 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 20:42:40,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 20:42:40,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 20:42:40,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 20:42:40,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 20:42:40,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 20:42:40,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 20:42:40,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 20:42:40,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 20:42:40,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 20:42:40,628 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 20:42:40,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 20:42:40,631 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 20:42:40,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 20:42:40,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 20:42:40,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 20:42:40,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 20:42:40,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 20:42:40,640 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 20:42:40,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 20:42:40,647 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 20:42:40,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 20:42:40,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 20:42:40,650 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 20:42:40,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 20:42:40,653 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 20:42:40,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 20:42:40,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 20:42:40,657 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 20:42:40,657 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 20:42:40,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 20:42:40,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 20:42:40,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 20:42:40,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 20:42:40,660 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 20:42:40,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 20:42:40,662 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 20:42:40,662 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 20:42:40,663 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 20:42:40,663 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 20:42:40,663 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 20:42:40,664 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 20:42:40,667 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-19 20:42:40,695 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 20:42:40,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 20:42:40,695 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 20:42:40,696 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 20:42:40,696 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 20:42:40,696 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 20:42:40,697 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 20:42:40,697 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 20:42:40,697 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 20:42:40,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 20:42:40,698 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 20:42:40,698 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 20:42:40,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 20:42:40,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 20:42:40,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 20:42:40,705 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 20:42:40,705 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 20:42:40,706 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 20:42:40,707 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 20:42:40,707 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 20:42:40,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 20:42:40,710 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 20:42:40,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 20:42:40,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 20:42:40,712 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 20:42:40,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 20:42:40,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:42:40,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 20:42:40,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 20:42:40,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 20:42:40,713 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 20:42:40,713 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 20:42:40,714 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 20:42:40,714 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 20:42:40,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 20:42:40,714 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 20:42:40,714 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6266dcc240f970a5b491753808ae5c0bb4e18ac4824a7135095a19951d4d9404 [2022-07-19 20:42:40,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 20:42:40,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 20:42:40,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 20:42:40,970 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 20:42:40,970 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 20:42:40,971 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_4+soft_float_4-3a.c.cil.c [2022-07-19 20:42:41,021 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a462a24d/c5a791528f3d40268b72dd61a1857e53/FLAG6fe07e09a [2022-07-19 20:42:41,421 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 20:42:41,422 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_4+soft_float_4-3a.c.cil.c [2022-07-19 20:42:41,428 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a462a24d/c5a791528f3d40268b72dd61a1857e53/FLAG6fe07e09a [2022-07-19 20:42:41,439 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a462a24d/c5a791528f3d40268b72dd61a1857e53 [2022-07-19 20:42:41,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 20:42:41,443 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 20:42:41,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 20:42:41,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 20:42:41,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 20:42:41,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:42:41" (1/1) ... [2022-07-19 20:42:41,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d0b2ae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:41, skipping insertion in model container [2022-07-19 20:42:41,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:42:41" (1/1) ... [2022-07-19 20:42:41,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 20:42:41,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 20:42:41,594 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_4+soft_float_4-3a.c.cil.c[1999,2012] [2022-07-19 20:42:41,621 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_4+soft_float_4-3a.c.cil.c[2368,2381] [2022-07-19 20:42:41,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:42:41,669 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 20:42:41,679 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_4+soft_float_4-3a.c.cil.c[1999,2012] [2022-07-19 20:42:41,680 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_4+soft_float_4-3a.c.cil.c[2368,2381] [2022-07-19 20:42:41,696 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:42:41,706 INFO L208 MainTranslator]: Completed translation [2022-07-19 20:42:41,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:41 WrapperNode [2022-07-19 20:42:41,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 20:42:41,715 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 20:42:41,715 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 20:42:41,715 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 20:42:41,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:41" (1/1) ... [2022-07-19 20:42:41,729 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:41" (1/1) ... [2022-07-19 20:42:41,741 INFO L137 Inliner]: procedures = 28, calls = 20, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70 [2022-07-19 20:42:41,742 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 20:42:41,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 20:42:41,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 20:42:41,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 20:42:41,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:41" (1/1) ... [2022-07-19 20:42:41,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:41" (1/1) ... [2022-07-19 20:42:41,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:41" (1/1) ... [2022-07-19 20:42:41,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:41" (1/1) ... [2022-07-19 20:42:41,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:41" (1/1) ... [2022-07-19 20:42:41,760 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:41" (1/1) ... [2022-07-19 20:42:41,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:41" (1/1) ... [2022-07-19 20:42:41,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 20:42:41,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 20:42:41,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 20:42:41,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 20:42:41,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:41" (1/1) ... [2022-07-19 20:42:41,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:42:41,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:42:41,809 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 20:42:41,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 20:42:41,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 20:42:41,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-19 20:42:41,874 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-19 20:42:41,875 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-19 20:42:41,875 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2022-07-19 20:42:41,875 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2022-07-19 20:42:41,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 20:42:41,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 20:42:41,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 20:42:41,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 20:42:41,969 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 20:42:41,970 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 20:42:44,576 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 20:42:44,581 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 20:42:44,581 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-19 20:42:44,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:42:44 BoogieIcfgContainer [2022-07-19 20:42:44,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 20:42:44,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 20:42:44,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 20:42:44,595 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 20:42:44,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 08:42:41" (1/3) ... [2022-07-19 20:42:44,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eed639d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:42:44, skipping insertion in model container [2022-07-19 20:42:44,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:42:41" (2/3) ... [2022-07-19 20:42:44,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eed639d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:42:44, skipping insertion in model container [2022-07-19 20:42:44,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:42:44" (3/3) ... [2022-07-19 20:42:44,610 INFO L111 eAbstractionObserver]: Analyzing ICFG square_4+soft_float_4-3a.c.cil.c [2022-07-19 20:42:44,620 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 20:42:44,621 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 20:42:44,675 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 20:42:44,688 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@47ace596, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@112f024f [2022-07-19 20:42:44,688 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 20:42:44,691 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 50 states have internal predecessors, (71), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-19 20:42:44,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-19 20:42:44,706 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:42:44,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:42:44,707 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:42:44,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:42:44,713 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-07-19 20:42:44,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 20:42:44,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056347587] [2022-07-19 20:42:44,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:42:44,733 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 20:42:44,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 20:42:44,735 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 20:42:44,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-19 20:42:45,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:42:45,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-19 20:42:45,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:42:45,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:42:45,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 20:42:45,137 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 20:42:45,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1056347587] [2022-07-19 20:42:45,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1056347587] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:42:45,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:42:45,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 20:42:45,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893607764] [2022-07-19 20:42:45,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:42:45,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 20:42:45,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 20:42:45,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 20:42:45,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 20:42:45,225 INFO L87 Difference]: Start difference. First operand has 63 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 50 states have internal predecessors, (71), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 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 20:42:45,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:42:45,256 INFO L93 Difference]: Finished difference Result 121 states and 179 transitions. [2022-07-19 20:42:45,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 20:42:45,257 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-19 20:42:45,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:42:45,263 INFO L225 Difference]: With dead ends: 121 [2022-07-19 20:42:45,263 INFO L226 Difference]: Without dead ends: 56 [2022-07-19 20:42:45,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 20:42:45,268 INFO L413 NwaCegarLoop]: 82 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, 82 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:42:45,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:42:45,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-07-19 20:42:45,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-07-19 20:42:45,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 44 states have internal predecessors, (57), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-19 20:42:45,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 74 transitions. [2022-07-19 20:42:45,295 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 74 transitions. Word has length 7 [2022-07-19 20:42:45,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:42:45,296 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 74 transitions. [2022-07-19 20:42:45,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:42:45,296 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 74 transitions. [2022-07-19 20:42:45,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-19 20:42:45,296 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:42:45,296 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:42:45,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-19 20:42:45,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 20:42:45,510 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:42:45,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:42:45,510 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-07-19 20:42:45,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 20:42:45,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2063672136] [2022-07-19 20:42:45,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:42:45,520 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 20:42:45,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 20:42:45,532 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 20:42:45,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process