./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 613205d4a69cfcfbc25451727273468eeac5e6faf4f74e1e8c3a83a65bc4c664 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 13:19:36,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 13:19:36,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 13:19:36,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 13:19:36,958 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 13:19:36,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 13:19:36,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 13:19:36,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 13:19:36,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 13:19:36,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 13:19:36,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 13:19:36,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 13:19:36,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 13:19:36,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 13:19:36,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 13:19:36,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 13:19:36,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 13:19:36,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 13:19:36,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 13:19:36,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 13:19:36,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 13:19:36,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 13:19:36,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 13:19:36,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 13:19:36,995 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 13:19:36,995 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 13:19:36,996 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 13:19:36,997 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 13:19:36,997 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 13:19:36,998 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 13:19:36,998 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 13:19:36,999 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 13:19:37,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 13:19:37,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 13:19:37,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 13:19:37,002 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 13:19:37,003 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 13:19:37,003 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 13:19:37,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 13:19:37,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 13:19:37,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 13:19:37,007 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 13:19:37,035 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 13:19:37,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 13:19:37,036 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 13:19:37,036 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 13:19:37,037 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 13:19:37,037 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 13:19:37,038 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 13:19:37,038 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 13:19:37,038 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 13:19:37,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 13:19:37,039 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 13:19:37,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 13:19:37,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 13:19:37,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 13:19:37,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 13:19:37,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 13:19:37,040 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 13:19:37,040 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 13:19:37,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 13:19:37,041 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 13:19:37,041 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 13:19:37,041 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 13:19:37,041 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 13:19:37,041 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 13:19:37,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:19:37,042 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 13:19:37,042 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 13:19:37,043 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 13:19:37,043 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 13:19:37,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 13:19:37,043 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 13:19:37,044 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 13:19:37,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 13:19:37,044 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 13:19:37,044 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 613205d4a69cfcfbc25451727273468eeac5e6faf4f74e1e8c3a83a65bc4c664 [2021-12-22 13:19:37,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 13:19:37,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 13:19:37,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 13:19:37,281 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 13:19:37,283 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 13:19:37,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c [2021-12-22 13:19:37,351 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e33d21b1/e37a5b5fc15f4751b52980a400fa5b32/FLAG9ab2f7eca [2021-12-22 13:19:37,697 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 13:19:37,698 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c [2021-12-22 13:19:37,706 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e33d21b1/e37a5b5fc15f4751b52980a400fa5b32/FLAG9ab2f7eca [2021-12-22 13:19:38,104 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e33d21b1/e37a5b5fc15f4751b52980a400fa5b32 [2021-12-22 13:19:38,106 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 13:19:38,107 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 13:19:38,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 13:19:38,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 13:19:38,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 13:19:38,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:19:38" (1/1) ... [2021-12-22 13:19:38,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71ca1896 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:38, skipping insertion in model container [2021-12-22 13:19:38,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:19:38" (1/1) ... [2021-12-22 13:19:38,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 13:19:38,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 13:19:38,281 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c[1995,2008] [2021-12-22 13:19:38,288 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c[2364,2377] [2021-12-22 13:19:38,323 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:19:38,329 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 13:19:38,342 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c[1995,2008] [2021-12-22 13:19:38,343 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_7+soft_float_1-3a.c.cil.c[2364,2377] [2021-12-22 13:19:38,366 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:19:38,377 INFO L208 MainTranslator]: Completed translation [2021-12-22 13:19:38,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:38 WrapperNode [2021-12-22 13:19:38,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 13:19:38,378 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 13:19:38,378 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 13:19:38,378 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 13:19:38,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:38" (1/1) ... [2021-12-22 13:19:38,396 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:38" (1/1) ... [2021-12-22 13:19:38,417 INFO L137 Inliner]: procedures = 27, calls = 21, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 168 [2021-12-22 13:19:38,417 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 13:19:38,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 13:19:38,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 13:19:38,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 13:19:38,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:38" (1/1) ... [2021-12-22 13:19:38,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:38" (1/1) ... [2021-12-22 13:19:38,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:38" (1/1) ... [2021-12-22 13:19:38,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:38" (1/1) ... [2021-12-22 13:19:38,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:38" (1/1) ... [2021-12-22 13:19:38,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:38" (1/1) ... [2021-12-22 13:19:38,439 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:38" (1/1) ... [2021-12-22 13:19:38,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 13:19:38,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 13:19:38,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 13:19:38,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 13:19:38,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:38" (1/1) ... [2021-12-22 13:19:38,461 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:19:38,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:19:38,488 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 13:19:38,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 13:19:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 13:19:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-22 13:19:38,530 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-22 13:19:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 13:19:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 13:19:38,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 13:19:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-22 13:19:38,535 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-22 13:19:38,585 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 13:19:38,586 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 13:19:38,888 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 13:19:38,894 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 13:19:38,895 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-22 13:19:38,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:19:38 BoogieIcfgContainer [2021-12-22 13:19:38,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 13:19:38,900 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 13:19:38,900 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 13:19:38,903 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 13:19:38,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:19:38" (1/3) ... [2021-12-22 13:19:38,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ffa8e8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:19:38, skipping insertion in model container [2021-12-22 13:19:38,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:38" (2/3) ... [2021-12-22 13:19:38,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ffa8e8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:19:38, skipping insertion in model container [2021-12-22 13:19:38,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:19:38" (3/3) ... [2021-12-22 13:19:38,906 INFO L111 eAbstractionObserver]: Analyzing ICFG square_7+soft_float_1-3a.c.cil.c [2021-12-22 13:19:38,909 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 13:19:38,910 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 13:19:38,950 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 13:19:38,955 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 13:19:38,955 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 13:19:38,969 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 67 states have (on average 1.5820895522388059) internal successors, (106), 71 states have internal predecessors, (106), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-22 13:19:38,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-22 13:19:38,972 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:19:38,973 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:19:38,973 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:19:38,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:19:38,977 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-12-22 13:19:38,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:19:38,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523985999] [2021-12-22 13:19:38,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:19:38,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:19:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:19:39,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:19:39,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:19:39,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523985999] [2021-12-22 13:19:39,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523985999] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:19:39,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:19:39,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 13:19:39,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752755414] [2021-12-22 13:19:39,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:19:39,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 13:19:39,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:19:39,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 13:19:39,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 13:19:39,146 INFO L87 Difference]: Start difference. First operand has 81 states, 67 states have (on average 1.5820895522388059) internal successors, (106), 71 states have internal predecessors, (106), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:19:39,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:19:39,187 INFO L93 Difference]: Finished difference Result 157 states and 249 transitions. [2021-12-22 13:19:39,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 13:19:39,189 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-22 13:19:39,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:19:39,200 INFO L225 Difference]: With dead ends: 157 [2021-12-22 13:19:39,201 INFO L226 Difference]: Without dead ends: 74 [2021-12-22 13:19:39,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 13:19:39,209 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:19:39,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:19:39,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-12-22 13:19:39,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-12-22 13:19:39,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 64 states have internal predecessors, (91), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-22 13:19:39,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 108 transitions. [2021-12-22 13:19:39,248 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 108 transitions. Word has length 7 [2021-12-22 13:19:39,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:19:39,249 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 108 transitions. [2021-12-22 13:19:39,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:19:39,249 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 108 transitions. [2021-12-22 13:19:39,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-22 13:19:39,250 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:19:39,250 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:19:39,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 13:19:39,250 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:19:39,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:19:39,251 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-12-22 13:19:39,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:19:39,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649806135] [2021-12-22 13:19:39,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:19:39,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:19:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 13:19:39,262 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 13:19:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 13:19:39,285 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 13:19:39,286 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-22 13:19:39,287 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-22 13:19:39,288 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-22 13:19:39,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 13:19:39,294 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-22 13:19:39,296 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 13:19:39,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 01:19:39 BoogieIcfgContainer [2021-12-22 13:19:39,320 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 13:19:39,321 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 13:19:39,321 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 13:19:39,322 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 13:19:39,322 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:19:38" (3/4) ... [2021-12-22 13:19:39,324 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-22 13:19:39,325 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 13:19:39,326 INFO L158 Benchmark]: Toolchain (without parser) took 1217.97ms. Allocated memory is still 104.9MB. Free memory was 73.9MB in the beginning and 34.2MB in the end (delta: 39.7MB). Peak memory consumption was 37.0MB. Max. memory is 16.1GB. [2021-12-22 13:19:39,327 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 86.0MB. Free memory was 42.9MB in the beginning and 42.8MB in the end (delta: 75.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 13:19:39,329 INFO L158 Benchmark]: CACSL2BoogieTranslator took 265.56ms. Allocated memory is still 104.9MB. Free memory was 73.6MB in the beginning and 78.2MB in the end (delta: -4.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-22 13:19:39,330 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.37ms. Allocated memory is still 104.9MB. Free memory was 78.2MB in the beginning and 76.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 13:19:39,332 INFO L158 Benchmark]: Boogie Preprocessor took 23.61ms. Allocated memory is still 104.9MB. Free memory was 76.1MB in the beginning and 74.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 13:19:39,332 INFO L158 Benchmark]: RCFGBuilder took 455.41ms. Allocated memory is still 104.9MB. Free memory was 74.6MB in the beginning and 59.3MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-22 13:19:39,332 INFO L158 Benchmark]: TraceAbstraction took 420.79ms. Allocated memory is still 104.9MB. Free memory was 58.5MB in the beginning and 34.8MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-22 13:19:39,333 INFO L158 Benchmark]: Witness Printer took 3.55ms. Allocated memory is still 104.9MB. Free memory was 34.8MB in the beginning and 34.2MB in the end (delta: 594.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 13:19:39,338 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 86.0MB. Free memory was 42.9MB in the beginning and 42.8MB in the end (delta: 75.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 265.56ms. Allocated memory is still 104.9MB. Free memory was 73.6MB in the beginning and 78.2MB in the end (delta: -4.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.37ms. Allocated memory is still 104.9MB. Free memory was 78.2MB in the beginning and 76.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.61ms. Allocated memory is still 104.9MB. Free memory was 76.1MB in the beginning and 74.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 455.41ms. Allocated memory is still 104.9MB. Free memory was 74.6MB in the beginning and 59.3MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 420.79ms. Allocated memory is still 104.9MB. Free memory was 58.5MB in the beginning and 34.8MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 3.55ms. Allocated memory is still 104.9MB. Free memory was 34.8MB in the beginning and 34.2MB in the end (delta: 594.5kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L402] COND TRUE __VERIFIER_nondet_int() [L403] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=49, x=49] [L47] COND TRUE !(result >= 0.0f && result < 1.4f) VAL [IN=49, x=49] [L48] reach_error() VAL [IN=49, x=49] - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 81 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, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 117 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, 117 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=81occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-22 13:19:39,375 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_7+soft_float_1-3a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 613205d4a69cfcfbc25451727273468eeac5e6faf4f74e1e8c3a83a65bc4c664 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 13:19:41,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 13:19:41,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 13:19:41,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 13:19:41,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 13:19:41,311 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 13:19:41,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 13:19:41,316 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 13:19:41,318 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 13:19:41,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 13:19:41,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 13:19:41,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 13:19:41,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 13:19:41,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 13:19:41,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 13:19:41,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 13:19:41,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 13:19:41,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 13:19:41,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 13:19:41,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 13:19:41,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 13:19:41,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 13:19:41,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 13:19:41,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 13:19:41,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 13:19:41,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 13:19:41,351 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 13:19:41,352 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 13:19:41,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 13:19:41,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 13:19:41,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 13:19:41,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 13:19:41,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 13:19:41,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 13:19:41,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 13:19:41,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 13:19:41,358 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 13:19:41,358 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 13:19:41,358 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 13:19:41,360 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 13:19:41,360 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 13:19:41,364 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-22 13:19:41,390 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 13:19:41,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 13:19:41,391 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 13:19:41,391 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 13:19:41,391 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 13:19:41,392 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 13:19:41,392 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 13:19:41,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 13:19:41,392 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 13:19:41,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 13:19:41,393 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 13:19:41,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 13:19:41,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 13:19:41,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 13:19:41,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 13:19:41,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 13:19:41,394 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 13:19:41,394 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-22 13:19:41,394 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-22 13:19:41,395 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 13:19:41,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 13:19:41,395 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 13:19:41,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 13:19:41,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 13:19:41,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 13:19:41,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 13:19:41,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:19:41,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 13:19:41,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 13:19:41,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 13:19:41,397 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-22 13:19:41,397 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-22 13:19:41,397 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 13:19:41,397 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 13:19:41,398 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 13:19:41,398 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 13:19:41,399 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-22 13:19:41,399 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 613205d4a69cfcfbc25451727273468eeac5e6faf4f74e1e8c3a83a65bc4c664 [2021-12-22 13:19:41,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 13:19:41,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 13:19:41,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 13:19:41,722 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 13:19:41,722 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 13:19:41,724 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c [2021-12-22 13:19:41,777 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a406de8a/ff43f414d5814313822ff42c7c14f303/FLAG9048611bd [2021-12-22 13:19:42,137 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 13:19:42,138 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c [2021-12-22 13:19:42,149 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a406de8a/ff43f414d5814313822ff42c7c14f303/FLAG9048611bd [2021-12-22 13:19:42,499 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a406de8a/ff43f414d5814313822ff42c7c14f303 [2021-12-22 13:19:42,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 13:19:42,502 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 13:19:42,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 13:19:42,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 13:19:42,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 13:19:42,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:19:42" (1/1) ... [2021-12-22 13:19:42,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c3bd8c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:42, skipping insertion in model container [2021-12-22 13:19:42,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:19:42" (1/1) ... [2021-12-22 13:19:42,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 13:19:42,559 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 13:19:42,663 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c[1995,2008] [2021-12-22 13:19:42,666 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c[2364,2377] [2021-12-22 13:19:42,700 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:19:42,709 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 13:19:42,729 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c[1995,2008] [2021-12-22 13:19:42,730 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c[2364,2377] [2021-12-22 13:19:42,786 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:19:42,796 INFO L208 MainTranslator]: Completed translation [2021-12-22 13:19:42,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:42 WrapperNode [2021-12-22 13:19:42,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 13:19:42,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 13:19:42,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 13:19:42,798 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 13:19:42,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:42" (1/1) ... [2021-12-22 13:19:42,810 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:42" (1/1) ... [2021-12-22 13:19:42,829 INFO L137 Inliner]: procedures = 28, calls = 21, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 164 [2021-12-22 13:19:42,830 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 13:19:42,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 13:19:42,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 13:19:42,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 13:19:42,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:42" (1/1) ... [2021-12-22 13:19:42,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:42" (1/1) ... [2021-12-22 13:19:42,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:42" (1/1) ... [2021-12-22 13:19:42,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:42" (1/1) ... [2021-12-22 13:19:42,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:42" (1/1) ... [2021-12-22 13:19:42,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:42" (1/1) ... [2021-12-22 13:19:42,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:42" (1/1) ... [2021-12-22 13:19:42,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 13:19:42,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 13:19:42,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 13:19:42,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 13:19:42,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:42" (1/1) ... [2021-12-22 13:19:42,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:19:42,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:19:42,888 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 13:19:42,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 13:19:42,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 13:19:42,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-22 13:19:42,916 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-22 13:19:42,916 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-22 13:19:42,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 13:19:42,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 13:19:42,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-22 13:19:42,916 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-22 13:19:42,981 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 13:19:42,982 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 13:19:45,592 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 13:19:45,599 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 13:19:45,599 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-22 13:19:45,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:19:45 BoogieIcfgContainer [2021-12-22 13:19:45,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 13:19:45,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 13:19:45,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 13:19:45,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 13:19:45,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:19:42" (1/3) ... [2021-12-22 13:19:45,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b1378d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:19:45, skipping insertion in model container [2021-12-22 13:19:45,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:42" (2/3) ... [2021-12-22 13:19:45,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b1378d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:19:45, skipping insertion in model container [2021-12-22 13:19:45,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:19:45" (3/3) ... [2021-12-22 13:19:45,607 INFO L111 eAbstractionObserver]: Analyzing ICFG square_7+soft_float_1-3a.c.cil.c [2021-12-22 13:19:45,613 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 13:19:45,613 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 13:19:45,667 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 13:19:45,673 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 13:19:45,675 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 13:19:45,690 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 67 states have (on average 1.5820895522388059) internal successors, (106), 71 states have internal predecessors, (106), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-22 13:19:45,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-22 13:19:45,693 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:19:45,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:19:45,694 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:19:45,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:19:45,700 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-12-22 13:19:45,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 13:19:45,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [505335964] [2021-12-22 13:19:45,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:19:45,715 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 13:19:45,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 13:19:45,716 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 13:19:45,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-22 13:19:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:19:46,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-22 13:19:46,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:19:46,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:19:46,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:19:46,115 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 13:19:46,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [505335964] [2021-12-22 13:19:46,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [505335964] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:19:46,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:19:46,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 13:19:46,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470411669] [2021-12-22 13:19:46,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:19:46,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 13:19:46,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 13:19:46,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 13:19:46,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 13:19:46,144 INFO L87 Difference]: Start difference. First operand has 81 states, 67 states have (on average 1.5820895522388059) internal successors, (106), 71 states have internal predecessors, (106), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:19:46,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:19:46,169 INFO L93 Difference]: Finished difference Result 157 states and 249 transitions. [2021-12-22 13:19:46,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 13:19:46,170 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-22 13:19:46,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:19:46,177 INFO L225 Difference]: With dead ends: 157 [2021-12-22 13:19:46,177 INFO L226 Difference]: Without dead ends: 74 [2021-12-22 13:19:46,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 13:19:46,183 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:19:46,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:19:46,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-12-22 13:19:46,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-12-22 13:19:46,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 64 states have internal predecessors, (91), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-22 13:19:46,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 108 transitions. [2021-12-22 13:19:46,217 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 108 transitions. Word has length 7 [2021-12-22 13:19:46,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:19:46,218 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 108 transitions. [2021-12-22 13:19:46,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:19:46,218 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 108 transitions. [2021-12-22 13:19:46,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-22 13:19:46,219 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:19:46,219 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:19:46,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-22 13:19:46,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 13:19:46,444 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:19:46,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:19:46,445 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-12-22 13:19:46,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 13:19:46,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1252398213] [2021-12-22 13:19:46,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:19:46,445 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 13:19:46,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 13:19:46,448 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 13:19:46,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process