./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cbmc-regression/float3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cbmc-regression/float3.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 bfc84f7de0a9f57990dc33f292919523a52aa1e7a1c1eca24395d6b28aed01b7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 13:31:42,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 13:31:42,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 13:31:42,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 13:31:42,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 13:31:42,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 13:31:42,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 13:31:42,076 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 13:31:42,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 13:31:42,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 13:31:42,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 13:31:42,081 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 13:31:42,081 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 13:31:42,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 13:31:42,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 13:31:42,085 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 13:31:42,086 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 13:31:42,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 13:31:42,090 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 13:31:42,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 13:31:42,096 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 13:31:42,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 13:31:42,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 13:31:42,102 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 13:31:42,103 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 13:31:42,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 13:31:42,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 13:31:42,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 13:31:42,108 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 13:31:42,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 13:31:42,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 13:31:42,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 13:31:42,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 13:31:42,111 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 13:31:42,112 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 13:31:42,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 13:31:42,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 13:31:42,113 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 13:31:42,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 13:31:42,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 13:31:42,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 13:31:42,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 13:31:42,116 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 13:31:42,139 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 13:31:42,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 13:31:42,140 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 13:31:42,140 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 13:31:42,140 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 13:31:42,141 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 13:31:42,141 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 13:31:42,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 13:31:42,142 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 13:31:42,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 13:31:42,142 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 13:31:42,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 13:31:42,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 13:31:42,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 13:31:42,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 13:31:42,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 13:31:42,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 13:31:42,143 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 13:31:42,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 13:31:42,144 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 13:31:42,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 13:31:42,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 13:31:42,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 13:31:42,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 13:31:42,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:31:42,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 13:31:42,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 13:31:42,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 13:31:42,145 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 13:31:42,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 13:31:42,145 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 13:31:42,146 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 13:31:42,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 13:31:42,146 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfc84f7de0a9f57990dc33f292919523a52aa1e7a1c1eca24395d6b28aed01b7 [2022-07-19 13:31:42,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 13:31:42,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 13:31:42,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 13:31:42,362 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 13:31:42,362 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 13:31:42,363 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float3.c [2022-07-19 13:31:42,408 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2a6bc153/96168f2c24c342399dda980dd384c62b/FLAG973d2a881 [2022-07-19 13:31:42,746 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 13:31:42,747 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float3.c [2022-07-19 13:31:42,750 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2a6bc153/96168f2c24c342399dda980dd384c62b/FLAG973d2a881 [2022-07-19 13:31:43,185 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2a6bc153/96168f2c24c342399dda980dd384c62b [2022-07-19 13:31:43,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 13:31:43,188 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 13:31:43,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 13:31:43,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 13:31:43,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 13:31:43,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:31:43" (1/1) ... [2022-07-19 13:31:43,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e5a279a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:43, skipping insertion in model container [2022-07-19 13:31:43,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:31:43" (1/1) ... [2022-07-19 13:31:43,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 13:31:43,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 13:31:43,306 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/floats-cbmc-regression/float3.c[465,478] [2022-07-19 13:31:43,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:31:43,313 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 13:31:43,322 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/floats-cbmc-regression/float3.c[465,478] [2022-07-19 13:31:43,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:31:43,337 INFO L208 MainTranslator]: Completed translation [2022-07-19 13:31:43,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:43 WrapperNode [2022-07-19 13:31:43,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 13:31:43,338 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 13:31:43,338 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 13:31:43,338 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 13:31:43,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:43" (1/1) ... [2022-07-19 13:31:43,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:43" (1/1) ... [2022-07-19 13:31:43,362 INFO L137 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 24 [2022-07-19 13:31:43,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 13:31:43,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 13:31:43,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 13:31:43,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 13:31:43,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:43" (1/1) ... [2022-07-19 13:31:43,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:43" (1/1) ... [2022-07-19 13:31:43,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:43" (1/1) ... [2022-07-19 13:31:43,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:43" (1/1) ... [2022-07-19 13:31:43,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:43" (1/1) ... [2022-07-19 13:31:43,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:43" (1/1) ... [2022-07-19 13:31:43,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:43" (1/1) ... [2022-07-19 13:31:43,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 13:31:43,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 13:31:43,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 13:31:43,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 13:31:43,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:43" (1/1) ... [2022-07-19 13:31:43,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:31:43,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:31:43,406 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 13:31:43,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 13:31:43,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 13:31:43,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 13:31:43,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 13:31:43,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 13:31:43,480 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 13:31:43,481 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 13:31:43,556 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 13:31:43,559 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 13:31:43,560 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 13:31:43,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:31:43 BoogieIcfgContainer [2022-07-19 13:31:43,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 13:31:43,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 13:31:43,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 13:31:43,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 13:31:43,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 01:31:43" (1/3) ... [2022-07-19 13:31:43,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f876d8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:31:43, skipping insertion in model container [2022-07-19 13:31:43,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:43" (2/3) ... [2022-07-19 13:31:43,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f876d8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:31:43, skipping insertion in model container [2022-07-19 13:31:43,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:31:43" (3/3) ... [2022-07-19 13:31:43,567 INFO L111 eAbstractionObserver]: Analyzing ICFG float3.c [2022-07-19 13:31:43,578 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 13:31:43,578 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 13:31:43,609 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 13:31:43,614 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@7ce8c04b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7a37a9fc [2022-07-19 13:31:43,615 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 13:31:43,618 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:31:43,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-19 13:31:43,622 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:31:43,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:31:43,623 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:31:43,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:31:43,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1804965381, now seen corresponding path program 1 times [2022-07-19 13:31:43,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:31:43,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871919682] [2022-07-19 13:31:43,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:31:43,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:31:43,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 13:31:43,700 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 13:31:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 13:31:43,733 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 13:31:43,735 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 13:31:43,736 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 13:31:43,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 13:31:43,741 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-19 13:31:43,744 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 13:31:43,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 01:31:43 BoogieIcfgContainer [2022-07-19 13:31:43,763 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 13:31:43,766 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 13:31:43,767 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 13:31:43,767 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 13:31:43,768 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:31:43" (3/4) ... [2022-07-19 13:31:43,770 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-19 13:31:43,770 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 13:31:43,771 INFO L158 Benchmark]: Toolchain (without parser) took 582.26ms. Allocated memory was 86.0MB in the beginning and 111.1MB in the end (delta: 25.2MB). Free memory was 47.4MB in the beginning and 65.2MB in the end (delta: -17.8MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. [2022-07-19 13:31:43,772 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 86.0MB. Free memory is still 63.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:31:43,773 INFO L158 Benchmark]: CACSL2BoogieTranslator took 148.47ms. Allocated memory was 86.0MB in the beginning and 111.1MB in the end (delta: 25.2MB). Free memory was 47.2MB in the beginning and 90.4MB in the end (delta: -43.1MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2022-07-19 13:31:43,807 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.12ms. Allocated memory is still 111.1MB. Free memory was 90.4MB in the beginning and 88.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 13:31:43,808 INFO L158 Benchmark]: Boogie Preprocessor took 17.66ms. Allocated memory is still 111.1MB. Free memory was 88.3MB in the beginning and 87.5MB in the end (delta: 810.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:31:43,809 INFO L158 Benchmark]: RCFGBuilder took 179.80ms. Allocated memory is still 111.1MB. Free memory was 87.5MB in the beginning and 79.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 13:31:43,809 INFO L158 Benchmark]: TraceAbstraction took 200.96ms. Allocated memory is still 111.1MB. Free memory was 78.6MB in the beginning and 66.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-19 13:31:43,809 INFO L158 Benchmark]: Witness Printer took 3.36ms. Allocated memory is still 111.1MB. Free memory was 66.0MB in the beginning and 65.2MB in the end (delta: 808.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 13:31:43,811 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 86.0MB. Free memory is still 63.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 148.47ms. Allocated memory was 86.0MB in the beginning and 111.1MB in the end (delta: 25.2MB). Free memory was 47.2MB in the beginning and 90.4MB in the end (delta: -43.1MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.12ms. Allocated memory is still 111.1MB. Free memory was 90.4MB in the beginning and 88.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.66ms. Allocated memory is still 111.1MB. Free memory was 88.3MB in the beginning and 87.5MB in the end (delta: 810.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 179.80ms. Allocated memory is still 111.1MB. Free memory was 87.5MB in the beginning and 79.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 200.96ms. Allocated memory is still 111.1MB. Free memory was 78.6MB in the beginning and 66.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 3.36ms. Allocated memory is still 111.1MB. Free memory was 66.0MB in the beginning and 65.2MB in the end (delta: 808.5kB). Peak memory consumption was 2.1MB. 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: 26]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 26, overapproximation of someBinaryArithmeticDOUBLEoperation at line 22. Possible FailurePath: [L6] double d = 0.0; VAL [d=0] [L15] int x = 2; [L17] COND TRUE __VERIFIER_nondet_int() [L18] x = 4 VAL [d=0, x=4] [L20] CALL f1() [L10] d = 1.0 VAL [d=1] [L20] RET f1() [L22] d += (x == 2) [L24] d += (x > 3) VAL [x=4] [L26] COND TRUE !(d == 2.0) VAL [x=4] [L26] reach_error() VAL [x=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-19 13:31:43,852 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/floats-cbmc-regression/float3.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 bfc84f7de0a9f57990dc33f292919523a52aa1e7a1c1eca24395d6b28aed01b7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 13:31:45,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 13:31:45,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 13:31:45,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 13:31:45,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 13:31:45,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 13:31:45,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 13:31:45,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 13:31:45,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 13:31:45,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 13:31:45,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 13:31:45,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 13:31:45,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 13:31:45,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 13:31:45,587 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 13:31:45,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 13:31:45,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 13:31:45,589 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 13:31:45,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 13:31:45,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 13:31:45,592 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 13:31:45,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 13:31:45,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 13:31:45,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 13:31:45,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 13:31:45,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 13:31:45,605 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 13:31:45,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 13:31:45,606 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 13:31:45,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 13:31:45,607 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 13:31:45,607 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 13:31:45,608 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 13:31:45,608 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 13:31:45,609 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 13:31:45,615 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 13:31:45,616 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 13:31:45,617 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 13:31:45,617 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 13:31:45,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 13:31:45,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 13:31:45,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 13:31:45,621 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-19 13:31:45,639 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 13:31:45,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 13:31:45,640 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 13:31:45,640 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 13:31:45,640 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 13:31:45,641 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 13:31:45,641 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 13:31:45,641 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 13:31:45,642 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 13:31:45,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 13:31:45,642 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 13:31:45,643 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 13:31:45,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 13:31:45,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 13:31:45,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 13:31:45,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 13:31:45,643 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 13:31:45,643 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 13:31:45,644 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 13:31:45,644 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 13:31:45,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 13:31:45,644 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 13:31:45,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 13:31:45,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 13:31:45,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 13:31:45,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 13:31:45,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:31:45,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 13:31:45,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 13:31:45,645 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 13:31:45,646 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 13:31:45,646 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 13:31:45,646 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 13:31:45,646 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 13:31:45,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 13:31:45,646 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 13:31:45,646 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfc84f7de0a9f57990dc33f292919523a52aa1e7a1c1eca24395d6b28aed01b7 [2022-07-19 13:31:45,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 13:31:45,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 13:31:45,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 13:31:45,942 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 13:31:45,943 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 13:31:45,944 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float3.c [2022-07-19 13:31:45,992 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9603e0bb/cfc5ce7fc59b43fd899d91ccf0599706/FLAGde77e2031 [2022-07-19 13:31:46,298 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 13:31:46,298 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float3.c [2022-07-19 13:31:46,303 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9603e0bb/cfc5ce7fc59b43fd899d91ccf0599706/FLAGde77e2031 [2022-07-19 13:31:46,740 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9603e0bb/cfc5ce7fc59b43fd899d91ccf0599706 [2022-07-19 13:31:46,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 13:31:46,743 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 13:31:46,744 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 13:31:46,744 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 13:31:46,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 13:31:46,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:31:46" (1/1) ... [2022-07-19 13:31:46,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53fbc2c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:46, skipping insertion in model container [2022-07-19 13:31:46,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:31:46" (1/1) ... [2022-07-19 13:31:46,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 13:31:46,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 13:31:46,857 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/floats-cbmc-regression/float3.c[465,478] [2022-07-19 13:31:46,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:31:46,873 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 13:31:46,884 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/floats-cbmc-regression/float3.c[465,478] [2022-07-19 13:31:46,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:31:46,932 INFO L208 MainTranslator]: Completed translation [2022-07-19 13:31:46,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:46 WrapperNode [2022-07-19 13:31:46,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 13:31:46,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 13:31:46,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 13:31:46,935 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 13:31:46,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:46" (1/1) ... [2022-07-19 13:31:46,947 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:46" (1/1) ... [2022-07-19 13:31:46,958 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 24 [2022-07-19 13:31:46,958 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 13:31:46,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 13:31:46,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 13:31:46,960 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 13:31:46,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:46" (1/1) ... [2022-07-19 13:31:46,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:46" (1/1) ... [2022-07-19 13:31:46,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:46" (1/1) ... [2022-07-19 13:31:46,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:46" (1/1) ... [2022-07-19 13:31:46,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:46" (1/1) ... [2022-07-19 13:31:46,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:46" (1/1) ... [2022-07-19 13:31:46,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:46" (1/1) ... [2022-07-19 13:31:46,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 13:31:46,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 13:31:46,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 13:31:46,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 13:31:46,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:46" (1/1) ... [2022-07-19 13:31:47,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:31:47,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:31:47,026 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 13:31:47,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 13:31:47,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 13:31:47,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-19 13:31:47,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 13:31:47,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 13:31:47,117 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 13:31:47,118 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 13:31:47,792 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 13:31:47,796 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 13:31:47,796 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 13:31:47,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:31:47 BoogieIcfgContainer [2022-07-19 13:31:47,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 13:31:47,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 13:31:47,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 13:31:47,800 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 13:31:47,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 01:31:46" (1/3) ... [2022-07-19 13:31:47,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dddc22b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:31:47, skipping insertion in model container [2022-07-19 13:31:47,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:31:46" (2/3) ... [2022-07-19 13:31:47,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dddc22b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:31:47, skipping insertion in model container [2022-07-19 13:31:47,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:31:47" (3/3) ... [2022-07-19 13:31:47,802 INFO L111 eAbstractionObserver]: Analyzing ICFG float3.c [2022-07-19 13:31:47,812 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 13:31:47,812 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 13:31:47,841 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 13:31:47,846 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@3fc78b78, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6dbe3f99 [2022-07-19 13:31:47,846 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 13:31:47,849 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:31:47,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-19 13:31:47,852 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:31:47,853 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:31:47,853 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:31:47,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:31:47,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1804965381, now seen corresponding path program 1 times [2022-07-19 13:31:47,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:31:47,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804900876] [2022-07-19 13:31:47,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:31:47,865 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:31:47,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:31:47,867 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 13:31:47,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-19 13:31:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:31:48,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 13:31:48,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:31:48,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:31:48,260 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 13:31:48,260 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 13:31:48,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804900876] [2022-07-19 13:31:48,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804900876] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:31:48,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:31:48,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 13:31:48,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935796911] [2022-07-19 13:31:48,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:31:48,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 13:31:48,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 13:31:48,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 13:31:48,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-19 13:31:48,285 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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) Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:31:50,479 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 13:31:50,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:31:50,549 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-07-19 13:31:50,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 13:31:50,552 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-19 13:31:50,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:31:50,556 INFO L225 Difference]: With dead ends: 22 [2022-07-19 13:31:50,557 INFO L226 Difference]: Without dead ends: 8 [2022-07-19 13:31:50,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-19 13:31:50,561 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 15 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 13:31:50,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 19 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 13:31:50,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-07-19 13:31:50,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-07-19 13:31:50,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:31:50,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2022-07-19 13:31:50,587 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2022-07-19 13:31:50,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:31:50,588 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2022-07-19 13:31:50,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:31:50,588 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2022-07-19 13:31:50,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-19 13:31:50,588 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:31:50,588 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:31:50,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-19 13:31:50,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 13:31:50,793 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:31:50,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:31:50,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1806812423, now seen corresponding path program 1 times [2022-07-19 13:31:50,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:31:50,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [421700883] [2022-07-19 13:31:50,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:31:50,794 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:31:50,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:31:50,796 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 13:31:50,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-19 13:31:50,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:31:50,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 13:31:50,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:31:51,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:31:51,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 13:31:51,058 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 13:31:51,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [421700883] [2022-07-19 13:31:51,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [421700883] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:31:51,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:31:51,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 13:31:51,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464967390] [2022-07-19 13:31:51,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:31:51,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 13:31:51,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 13:31:51,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 13:31:51,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-19 13:31:51,064 INFO L87 Difference]: Start difference. First operand 8 states and 7 transitions. Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:31:51,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:31:51,641 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2022-07-19 13:31:51,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 13:31:51,642 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-19 13:31:51,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:31:51,642 INFO L225 Difference]: With dead ends: 8 [2022-07-19 13:31:51,642 INFO L226 Difference]: Without dead ends: 0 [2022-07-19 13:31:51,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-19 13:31:51,643 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 13:31:51,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 13:31:51,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-19 13:31:51,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-19 13:31:51,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:31:51,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-19 13:31:51,645 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2022-07-19 13:31:51,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:31:51,645 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-19 13:31:51,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:31:51,645 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-19 13:31:51,645 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-19 13:31:51,647 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 13:31:51,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-19 13:31:51,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 13:31:51,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-19 13:31:51,855 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-19 13:31:51,855 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-19 13:31:51,855 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-19 13:31:51,855 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-19 13:31:51,856 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-07-19 13:31:51,856 INFO L899 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2022-07-19 13:31:51,856 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 26) no Hoare annotation was computed. [2022-07-19 13:31:51,856 INFO L899 garLoopResultBuilder]: For program point L17(lines 17 18) no Hoare annotation was computed. [2022-07-19 13:31:51,856 INFO L899 garLoopResultBuilder]: For program point L17-2(lines 17 18) no Hoare annotation was computed. [2022-07-19 13:31:51,856 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 27) no Hoare annotation was computed. [2022-07-19 13:31:51,856 INFO L899 garLoopResultBuilder]: For program point L8(lines 8 11) no Hoare annotation was computed. [2022-07-19 13:31:51,858 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-19 13:31:51,859 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 13:31:51,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 01:31:51 BoogieIcfgContainer [2022-07-19 13:31:51,862 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 13:31:51,862 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 13:31:51,862 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 13:31:51,863 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 13:31:51,863 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:31:47" (3/4) ... [2022-07-19 13:31:51,865 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 13:31:51,871 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-07-19 13:31:51,871 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-19 13:31:51,871 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 13:31:51,872 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 13:31:51,902 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 13:31:51,902 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 13:31:51,903 INFO L158 Benchmark]: Toolchain (without parser) took 5160.35ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 41.2MB in the beginning and 51.3MB in the end (delta: -10.1MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. [2022-07-19 13:31:51,903 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 60.8MB. Free memory was 42.4MB in the beginning and 42.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:31:51,903 INFO L158 Benchmark]: CACSL2BoogieTranslator took 188.61ms. Allocated memory is still 60.8MB. Free memory was 41.0MB in the beginning and 44.5MB in the end (delta: -3.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-19 13:31:51,904 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.80ms. Allocated memory is still 60.8MB. Free memory was 44.5MB in the beginning and 42.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:31:51,904 INFO L158 Benchmark]: Boogie Preprocessor took 35.28ms. Allocated memory is still 60.8MB. Free memory was 42.9MB in the beginning and 42.0MB in the end (delta: 885.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 13:31:51,904 INFO L158 Benchmark]: RCFGBuilder took 802.47ms. Allocated memory is still 60.8MB. Free memory was 41.8MB in the beginning and 33.6MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 13:31:51,904 INFO L158 Benchmark]: TraceAbstraction took 4063.43ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 33.1MB in the beginning and 53.6MB in the end (delta: -20.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:31:51,905 INFO L158 Benchmark]: Witness Printer took 40.08ms. Allocated memory is still 75.5MB. Free memory was 53.6MB in the beginning and 51.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 13:31:51,906 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 60.8MB. Free memory was 42.4MB in the beginning and 42.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 188.61ms. Allocated memory is still 60.8MB. Free memory was 41.0MB in the beginning and 44.5MB in the end (delta: -3.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.80ms. Allocated memory is still 60.8MB. Free memory was 44.5MB in the beginning and 42.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 35.28ms. Allocated memory is still 60.8MB. Free memory was 42.9MB in the beginning and 42.0MB in the end (delta: 885.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 802.47ms. Allocated memory is still 60.8MB. Free memory was 41.8MB in the beginning and 33.6MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 4063.43ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 33.1MB in the beginning and 53.6MB in the end (delta: -20.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 40.08ms. Allocated memory is still 75.5MB. Free memory was 53.6MB in the beginning and 51.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. 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 - PositiveResult [Line: 26]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 28 IncrementalHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 10 mSDtfsCounter, 28 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 13, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 94 SizeOfPredicates, 6 NumberOfNonLiveVariables, 45 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-19 13:31:51,954 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 Writing output log to file Ultimate.log Result: TRUE