./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_7+soft_float_2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/square_7+soft_float_2a.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 032bdbaadc57a40b0ab079d12fe59c315df9e45b2b10a57560568a476c18d976 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:03:43,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:03:43,019 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:03:43,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:03:43,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:03:43,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:03:43,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:03:43,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:03:43,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:03:43,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:03:43,074 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:03:43,076 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:03:43,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:03:43,077 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:03:43,078 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:03:43,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:03:43,079 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:03:43,080 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:03:43,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:03:43,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:03:43,083 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:03:43,084 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:03:43,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:03:43,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:03:43,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:03:43,092 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:03:43,094 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:03:43,094 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:03:43,095 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:03:43,095 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:03:43,096 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:03:43,097 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:03:43,098 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:03:43,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:03:43,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:03:43,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:03:43,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:03:43,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:03:43,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:03:43,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:03:43,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:03:43,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:03:43,105 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:03:43,134 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:03:43,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:03:43,135 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:03:43,135 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:03:43,136 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:03:43,136 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:03:43,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:03:43,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:03:43,137 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:03:43,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:03:43,138 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:03:43,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:03:43,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:03:43,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:03:43,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:03:43,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:03:43,139 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:03:43,139 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:03:43,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:03:43,139 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:03:43,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:03:43,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:03:43,140 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:03:43,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:03:43,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:03:43,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:03:43,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:03:43,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:03:43,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:03:43,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:03:43,141 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:03:43,141 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:03:43,142 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:03:43,142 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 032bdbaadc57a40b0ab079d12fe59c315df9e45b2b10a57560568a476c18d976 [2022-07-22 21:03:43,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:03:43,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:03:43,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:03:43,367 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:03:43,368 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:03:43,369 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_7+soft_float_2a.c.cil.c [2022-07-22 21:03:43,418 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d6542eb9/06aba41f1ccc4846bf911bca78279bd0/FLAG6e004ff03 [2022-07-22 21:03:43,739 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:03:43,739 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_7+soft_float_2a.c.cil.c [2022-07-22 21:03:43,747 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d6542eb9/06aba41f1ccc4846bf911bca78279bd0/FLAG6e004ff03 [2022-07-22 21:03:44,150 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d6542eb9/06aba41f1ccc4846bf911bca78279bd0 [2022-07-22 21:03:44,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:03:44,153 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:03:44,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:03:44,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:03:44,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:03:44,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:03:44" (1/1) ... [2022-07-22 21:03:44,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5176f70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:03:44, skipping insertion in model container [2022-07-22 21:03:44,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:03:44" (1/1) ... [2022-07-22 21:03:44,165 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:03:44,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:03:44,359 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_2a.c.cil.c[1995,2008] [2022-07-22 21:03:44,363 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_2a.c.cil.c[2364,2377] [2022-07-22 21:03:44,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:03:44,411 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:03:44,422 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_2a.c.cil.c[1995,2008] [2022-07-22 21:03:44,424 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_2a.c.cil.c[2364,2377] [2022-07-22 21:03:44,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:03:44,466 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:03:44,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:03:44 WrapperNode [2022-07-22 21:03:44,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:03:44,468 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:03:44,468 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:03:44,469 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:03:44,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:03:44" (1/1) ... [2022-07-22 21:03:44,482 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:03:44" (1/1) ... [2022-07-22 21:03:44,506 INFO L137 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 199 [2022-07-22 21:03:44,506 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:03:44,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:03:44,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:03:44,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:03:44,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:03:44" (1/1) ... [2022-07-22 21:03:44,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:03:44" (1/1) ... [2022-07-22 21:03:44,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:03:44" (1/1) ... [2022-07-22 21:03:44,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:03:44" (1/1) ... [2022-07-22 21:03:44,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:03:44" (1/1) ... [2022-07-22 21:03:44,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:03:44" (1/1) ... [2022-07-22 21:03:44,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:03:44" (1/1) ... [2022-07-22 21:03:44,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:03:44,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:03:44,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:03:44,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:03:44,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:03:44" (1/1) ... [2022-07-22 21:03:44,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:03:44,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:03:44,586 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 21:03:44,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 21:03:44,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:03:44,629 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-22 21:03:44,629 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-22 21:03:44,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:03:44,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:03:44,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:03:44,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 21:03:44,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 21:03:44,692 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:03:44,694 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:03:44,985 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:03:44,992 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:03:44,992 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-22 21:03:44,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:03:44 BoogieIcfgContainer [2022-07-22 21:03:44,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:03:44,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:03:44,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:03:45,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:03:45,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:03:44" (1/3) ... [2022-07-22 21:03:45,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44808002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:03:45, skipping insertion in model container [2022-07-22 21:03:45,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:03:44" (2/3) ... [2022-07-22 21:03:45,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44808002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:03:45, skipping insertion in model container [2022-07-22 21:03:45,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:03:44" (3/3) ... [2022-07-22 21:03:45,012 INFO L111 eAbstractionObserver]: Analyzing ICFG square_7+soft_float_2a.c.cil.c [2022-07-22 21:03:45,024 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:03:45,024 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 21:03:45,067 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:03:45,072 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@73d4bf95, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@38752c5b [2022-07-22 21:03:45,073 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 21:03:45,076 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 87 states have (on average 1.6896551724137931) internal successors, (147), 90 states have internal predecessors, (147), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-22 21:03:45,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-22 21:03:45,082 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 21:03:45,082 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:03:45,083 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 21:03:45,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:03:45,087 INFO L85 PathProgramCache]: Analyzing trace with hash -685161840, now seen corresponding path program 1 times [2022-07-22 21:03:45,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:03:45,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886188637] [2022-07-22 21:03:45,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:03:45,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:03:45,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:03:45,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:03:45,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:03:45,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886188637] [2022-07-22 21:03:45,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886188637] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:03:45,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:03:45,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 21:03:45,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132204547] [2022-07-22 21:03:45,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:03:45,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 21:03:45,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:03:45,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 21:03:45,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 21:03:45,241 INFO L87 Difference]: Start difference. First operand has 97 states, 87 states have (on average 1.6896551724137931) internal successors, (147), 90 states have internal predecessors, (147), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:03:45,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 21:03:45,308 INFO L93 Difference]: Finished difference Result 189 states and 311 transitions. [2022-07-22 21:03:45,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 21:03:45,310 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-22 21:03:45,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 21:03:45,318 INFO L225 Difference]: With dead ends: 189 [2022-07-22 21:03:45,318 INFO L226 Difference]: Without dead ends: 88 [2022-07-22 21:03:45,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 21:03:45,338 INFO L413 NwaCegarLoop]: 140 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, 140 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 21:03:45,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 21:03:45,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-07-22 21:03:45,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-07-22 21:03:45,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 80 states have (on average 1.5) internal successors, (120), 81 states have internal predecessors, (120), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-22 21:03:45,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 129 transitions. [2022-07-22 21:03:45,399 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 129 transitions. Word has length 7 [2022-07-22 21:03:45,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 21:03:45,400 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 129 transitions. [2022-07-22 21:03:45,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:03:45,400 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 129 transitions. [2022-07-22 21:03:45,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-22 21:03:45,402 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 21:03:45,402 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:03:45,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:03:45,402 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 21:03:45,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:03:45,403 INFO L85 PathProgramCache]: Analyzing trace with hash -685102258, now seen corresponding path program 1 times [2022-07-22 21:03:45,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:03:45,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066452042] [2022-07-22 21:03:45,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:03:45,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:03:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:03:45,437 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 21:03:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:03:45,482 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 21:03:45,483 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 21:03:45,485 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-22 21:03:45,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-22 21:03:45,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:03:45,492 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-22 21:03:45,495 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 21:03:45,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 09:03:45 BoogieIcfgContainer [2022-07-22 21:03:45,519 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 21:03:45,520 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 21:03:45,520 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 21:03:45,521 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 21:03:45,521 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:03:44" (3/4) ... [2022-07-22 21:03:45,524 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-22 21:03:45,524 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 21:03:45,526 INFO L158 Benchmark]: Toolchain (without parser) took 1370.96ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 67.3MB in the beginning and 95.1MB in the end (delta: -27.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 21:03:45,526 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 107.0MB. Free memory is still 83.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 21:03:45,528 INFO L158 Benchmark]: CACSL2BoogieTranslator took 312.62ms. Allocated memory is still 107.0MB. Free memory was 67.1MB in the beginning and 77.9MB in the end (delta: -10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-22 21:03:45,529 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.14ms. Allocated memory is still 107.0MB. Free memory was 77.9MB in the beginning and 75.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:03:45,531 INFO L158 Benchmark]: Boogie Preprocessor took 28.68ms. Allocated memory is still 107.0MB. Free memory was 75.8MB in the beginning and 74.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:03:45,531 INFO L158 Benchmark]: RCFGBuilder took 459.11ms. Allocated memory is still 107.0MB. Free memory was 73.7MB in the beginning and 54.3MB in the end (delta: 19.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-07-22 21:03:45,532 INFO L158 Benchmark]: TraceAbstraction took 522.63ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 53.7MB in the beginning and 95.1MB in the end (delta: -41.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 21:03:45,532 INFO L158 Benchmark]: Witness Printer took 3.87ms. Allocated memory is still 130.0MB. Free memory is still 95.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 21:03:45,537 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 107.0MB. Free memory is still 83.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 312.62ms. Allocated memory is still 107.0MB. Free memory was 67.1MB in the beginning and 77.9MB in the end (delta: -10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.14ms. Allocated memory is still 107.0MB. Free memory was 77.9MB in the beginning and 75.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.68ms. Allocated memory is still 107.0MB. Free memory was 75.8MB in the beginning and 74.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 459.11ms. Allocated memory is still 107.0MB. Free memory was 73.7MB in the beginning and 54.3MB in the end (delta: 19.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 522.63ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 53.7MB in the beginning and 95.1MB in the end (delta: -41.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.87ms. Allocated memory is still 130.0MB. Free memory is still 95.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L322] COND TRUE __VERIFIER_nondet_int() [L323] 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, 97 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 140 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, 140 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 [2022-07-22 21:03:45,577 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_2a.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 032bdbaadc57a40b0ab079d12fe59c315df9e45b2b10a57560568a476c18d976 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:03:47,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:03:47,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:03:47,423 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:03:47,424 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:03:47,425 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:03:47,432 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:03:47,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:03:47,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:03:47,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:03:47,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:03:47,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:03:47,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:03:47,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:03:47,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:03:47,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:03:47,443 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:03:47,444 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:03:47,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:03:47,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:03:47,448 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:03:47,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:03:47,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:03:47,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:03:47,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:03:47,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:03:47,462 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:03:47,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:03:47,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:03:47,464 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:03:47,465 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:03:47,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:03:47,466 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:03:47,467 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:03:47,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:03:47,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:03:47,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:03:47,470 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:03:47,470 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:03:47,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:03:47,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:03:47,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:03:47,478 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-22 21:03:47,504 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:03:47,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:03:47,505 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:03:47,505 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:03:47,506 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:03:47,506 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:03:47,507 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:03:47,507 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:03:47,507 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:03:47,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:03:47,508 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:03:47,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:03:47,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:03:47,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:03:47,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:03:47,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:03:47,509 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-22 21:03:47,510 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-22 21:03:47,510 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-22 21:03:47,510 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:03:47,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:03:47,510 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:03:47,510 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:03:47,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:03:47,511 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:03:47,511 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:03:47,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:03:47,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:03:47,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:03:47,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:03:47,512 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-22 21:03:47,512 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-22 21:03:47,512 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:03:47,513 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:03:47,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:03:47,513 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-22 21:03:47,513 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 032bdbaadc57a40b0ab079d12fe59c315df9e45b2b10a57560568a476c18d976 [2022-07-22 21:03:47,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:03:47,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:03:47,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:03:47,832 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:03:47,833 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:03:47,835 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_7+soft_float_2a.c.cil.c [2022-07-22 21:03:47,891 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01af8a082/ccec12b163774e3daba4030e72eef116/FLAGce7662826 [2022-07-22 21:03:48,262 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:03:48,263 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_7+soft_float_2a.c.cil.c [2022-07-22 21:03:48,270 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01af8a082/ccec12b163774e3daba4030e72eef116/FLAGce7662826 [2022-07-22 21:03:48,282 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01af8a082/ccec12b163774e3daba4030e72eef116 [2022-07-22 21:03:48,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:03:48,286 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:03:48,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:03:48,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:03:48,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:03:48,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:03:48" (1/1) ... [2022-07-22 21:03:48,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ff6ab01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:03:48, skipping insertion in model container [2022-07-22 21:03:48,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:03:48" (1/1) ... [2022-07-22 21:03:48,297 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:03:48,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:03:48,470 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_2a.c.cil.c[1995,2008] [2022-07-22 21:03:48,477 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_2a.c.cil.c[2364,2377] [2022-07-22 21:03:48,568 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:03:48,584 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:03:48,606 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_2a.c.cil.c[1995,2008] [2022-07-22 21:03:48,609 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_7+soft_float_2a.c.cil.c[2364,2377] [2022-07-22 21:03:48,639 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:03:48,656 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:03:48,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:03:48 WrapperNode [2022-07-22 21:03:48,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:03:48,658 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:03:48,658 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:03:48,658 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:03:48,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:03:48" (1/1) ... [2022-07-22 21:03:48,689 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:03:48" (1/1) ... [2022-07-22 21:03:48,718 INFO L137 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 129 [2022-07-22 21:03:48,718 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:03:48,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:03:48,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:03:48,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:03:48,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:03:48" (1/1) ... [2022-07-22 21:03:48,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:03:48" (1/1) ... [2022-07-22 21:03:48,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:03:48" (1/1) ... [2022-07-22 21:03:48,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:03:48" (1/1) ... [2022-07-22 21:03:48,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:03:48" (1/1) ... [2022-07-22 21:03:48,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:03:48" (1/1) ... [2022-07-22 21:03:48,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:03:48" (1/1) ... [2022-07-22 21:03:48,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:03:48,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:03:48,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:03:48,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:03:48,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:03:48" (1/1) ... [2022-07-22 21:03:48,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:03:48,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:03:48,812 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 21:03:48,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 21:03:48,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:03:48,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-22 21:03:48,856 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-22 21:03:48,856 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-22 21:03:48,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:03:48,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:03:48,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 21:03:48,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 21:03:48,941 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:03:48,942 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:03:51,429 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:03:51,435 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:03:51,436 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-22 21:03:51,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:03:51 BoogieIcfgContainer [2022-07-22 21:03:51,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:03:51,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:03:51,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:03:51,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:03:51,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:03:48" (1/3) ... [2022-07-22 21:03:51,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a58a11e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:03:51, skipping insertion in model container [2022-07-22 21:03:51,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:03:48" (2/3) ... [2022-07-22 21:03:51,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a58a11e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:03:51, skipping insertion in model container [2022-07-22 21:03:51,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:03:51" (3/3) ... [2022-07-22 21:03:51,446 INFO L111 eAbstractionObserver]: Analyzing ICFG square_7+soft_float_2a.c.cil.c [2022-07-22 21:03:51,458 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:03:51,458 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 21:03:51,500 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:03:51,505 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@a5a5c3a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@66fba827 [2022-07-22 21:03:51,506 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 21:03:51,510 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-22 21:03:51,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-22 21:03:51,515 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 21:03:51,516 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:03:51,516 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 21:03:51,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:03:51,521 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-07-22 21:03:51,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 21:03:51,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1930447562] [2022-07-22 21:03:51,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:03:51,533 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 21:03:51,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 21:03:51,536 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 21:03:51,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-22 21:03:51,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:03:51,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-22 21:03:51,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:03:51,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:03:51,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 21:03:51,937 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 21:03:51,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1930447562] [2022-07-22 21:03:51,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1930447562] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:03:51,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:03:51,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 21:03:51,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140569485] [2022-07-22 21:03:51,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:03:51,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 21:03:51,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 21:03:51,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 21:03:51,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 21:03:51,969 INFO L87 Difference]: Start difference. First operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:03:51,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 21:03:51,998 INFO L93 Difference]: Finished difference Result 117 states and 175 transitions. [2022-07-22 21:03:51,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 21:03:52,000 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-22 21:03:52,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 21:03:52,006 INFO L225 Difference]: With dead ends: 117 [2022-07-22 21:03:52,007 INFO L226 Difference]: Without dead ends: 52 [2022-07-22 21:03:52,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 21:03:52,013 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 [2022-07-22 21:03:52,014 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] [2022-07-22 21:03:52,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-07-22 21:03:52,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-07-22 21:03:52,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 45 states have internal predecessors, (62), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-22 21:03:52,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2022-07-22 21:03:52,043 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 7 [2022-07-22 21:03:52,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 21:03:52,043 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2022-07-22 21:03:52,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:03:52,044 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2022-07-22 21:03:52,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-22 21:03:52,044 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 21:03:52,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:03:52,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-22 21:03:52,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 21:03:52,260 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 21:03:52,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:03:52,261 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-07-22 21:03:52,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 21:03:52,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1609209859] [2022-07-22 21:03:52,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:03:52,262 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 21:03:52,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 21:03:52,272 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 21:03:52,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process