./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cbmc-regression/float2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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/float2.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 069e404bf7b01a351383c4004538ba52022db96a ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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/float2.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 069e404bf7b01a351383c4004538ba52022db96a ................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 00:08:11,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 00:08:11,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 00:08:11,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 00:08:11,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 00:08:11,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 00:08:11,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 00:08:11,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 00:08:11,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 00:08:11,201 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 00:08:11,202 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 00:08:11,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 00:08:11,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 00:08:11,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 00:08:11,205 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 00:08:11,206 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 00:08:11,206 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 00:08:11,207 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 00:08:11,208 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 00:08:11,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 00:08:11,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 00:08:11,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 00:08:11,211 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 00:08:11,212 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 00:08:11,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 00:08:11,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 00:08:11,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 00:08:11,214 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 00:08:11,215 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 00:08:11,215 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 00:08:11,216 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 00:08:11,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 00:08:11,217 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 00:08:11,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 00:08:11,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 00:08:11,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 00:08:11,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 00:08:11,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 00:08:11,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 00:08:11,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 00:08:11,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 00:08:11,221 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 00:08:11,235 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 00:08:11,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 00:08:11,235 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 00:08:11,235 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 00:08:11,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 00:08:11,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 00:08:11,236 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 00:08:11,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 00:08:11,237 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 00:08:11,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 00:08:11,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 00:08:11,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 00:08:11,237 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 00:08:11,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 00:08:11,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 00:08:11,238 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 00:08:11,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 00:08:11,238 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 00:08:11,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 00:08:11,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 00:08:11,238 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 00:08:11,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 00:08:11,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 00:08:11,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 00:08:11,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 00:08:11,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 00:08:11,239 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 00:08:11,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 00:08:11,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 00:08:11,240 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 00:08:11,240 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 069e404bf7b01a351383c4004538ba52022db96a [2021-08-26 00:08:11,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 00:08:11,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 00:08:11,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 00:08:11,521 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 00:08:11,521 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 00:08:11,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float2.c [2021-08-26 00:08:11,565 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84c27b966/883454c7c2214d7eaa1ffab038be1049/FLAG875bb11e0 [2021-08-26 00:08:11,911 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 00:08:11,911 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float2.c [2021-08-26 00:08:11,916 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84c27b966/883454c7c2214d7eaa1ffab038be1049/FLAG875bb11e0 [2021-08-26 00:08:12,358 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84c27b966/883454c7c2214d7eaa1ffab038be1049 [2021-08-26 00:08:12,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 00:08:12,361 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 00:08:12,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 00:08:12,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 00:08:12,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 00:08:12,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:08:12" (1/1) ... [2021-08-26 00:08:12,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49956c41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:12, skipping insertion in model container [2021-08-26 00:08:12,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:08:12" (1/1) ... [2021-08-26 00:08:12,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 00:08:12,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 00:08:12,533 WARN L228 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/float2.c[366,379] [2021-08-26 00:08:12,535 WARN L228 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/float2.c[420,433] [2021-08-26 00:08:12,535 WARN L228 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/float2.c[493,506] [2021-08-26 00:08:12,536 WARN L228 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/float2.c[557,570] [2021-08-26 00:08:12,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 00:08:12,542 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 00:08:12,553 WARN L228 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/float2.c[366,379] [2021-08-26 00:08:12,555 WARN L228 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/float2.c[420,433] [2021-08-26 00:08:12,556 WARN L228 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/float2.c[493,506] [2021-08-26 00:08:12,557 WARN L228 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/float2.c[557,570] [2021-08-26 00:08:12,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 00:08:12,566 INFO L208 MainTranslator]: Completed translation [2021-08-26 00:08:12,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:12 WrapperNode [2021-08-26 00:08:12,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 00:08:12,569 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 00:08:12,569 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 00:08:12,569 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 00:08:12,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:12" (1/1) ... [2021-08-26 00:08:12,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:12" (1/1) ... [2021-08-26 00:08:12,626 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 00:08:12,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 00:08:12,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 00:08:12,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 00:08:12,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:12" (1/1) ... [2021-08-26 00:08:12,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:12" (1/1) ... [2021-08-26 00:08:12,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:12" (1/1) ... [2021-08-26 00:08:12,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:12" (1/1) ... [2021-08-26 00:08:12,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:12" (1/1) ... [2021-08-26 00:08:12,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:12" (1/1) ... [2021-08-26 00:08:12,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:12" (1/1) ... [2021-08-26 00:08:12,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 00:08:12,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 00:08:12,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 00:08:12,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 00:08:12,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:12" (1/1) ... [2021-08-26 00:08:12,655 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 00:08:12,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 00:08:12,703 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 00:08:12,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 00:08:12,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 00:08:12,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 00:08:12,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 00:08:12,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 00:08:12,953 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 00:08:12,953 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-26 00:08:12,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:08:12 BoogieIcfgContainer [2021-08-26 00:08:12,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 00:08:12,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 00:08:12,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 00:08:12,957 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 00:08:12,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 12:08:12" (1/3) ... [2021-08-26 00:08:12,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25fff507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:08:12, skipping insertion in model container [2021-08-26 00:08:12,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:12" (2/3) ... [2021-08-26 00:08:12,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25fff507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:08:12, skipping insertion in model container [2021-08-26 00:08:12,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:08:12" (3/3) ... [2021-08-26 00:08:12,959 INFO L111 eAbstractionObserver]: Analyzing ICFG float2.c [2021-08-26 00:08:12,962 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 00:08:12,962 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-08-26 00:08:12,990 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 00:08:12,995 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 00:08:12,995 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-26 00:08:13,004 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 00:08:13,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-08-26 00:08:13,007 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 00:08:13,007 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-08-26 00:08:13,008 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-08-26 00:08:13,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 00:08:13,011 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-08-26 00:08:13,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 00:08:13,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559699784] [2021-08-26 00:08:13,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 00:08:13,022 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 00:08:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 00:08:13,078 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 00:08:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 00:08:13,098 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-26 00:08:13,100 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 00:08:13,100 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 00:08:13,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 00:08:13,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 00:08:13,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 00:08:13,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 00:08:13,106 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 00:08:13,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 12:08:13 BoogieIcfgContainer [2021-08-26 00:08:13,116 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 00:08:13,116 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 00:08:13,116 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 00:08:13,116 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 00:08:13,117 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:08:12" (3/4) ... [2021-08-26 00:08:13,119 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-26 00:08:13,119 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 00:08:13,120 INFO L168 Benchmark]: Toolchain (without parser) took 758.30 ms. Allocated memory is still 67.1 MB. Free memory was 42.7 MB in the beginning and 43.0 MB in the end (delta: -295.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 00:08:13,120 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 46.1 MB. Free memory was 28.4 MB in the beginning and 28.4 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 00:08:13,121 INFO L168 Benchmark]: CACSL2BoogieTranslator took 189.24 ms. Allocated memory is still 67.1 MB. Free memory was 42.5 MB in the beginning and 48.0 MB in the end (delta: -5.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-26 00:08:13,122 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.10 ms. Allocated memory is still 67.1 MB. Free memory was 48.0 MB in the beginning and 51.2 MB in the end (delta: -3.1 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. [2021-08-26 00:08:13,123 INFO L168 Benchmark]: Boogie Preprocessor took 19.71 ms. Allocated memory is still 67.1 MB. Free memory was 51.2 MB in the beginning and 50.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 00:08:13,124 INFO L168 Benchmark]: RCFGBuilder took 306.08 ms. Allocated memory is still 67.1 MB. Free memory was 50.2 MB in the beginning and 38.6 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 00:08:13,127 INFO L168 Benchmark]: TraceAbstraction took 160.62 ms. Allocated memory is still 67.1 MB. Free memory was 38.2 MB in the beginning and 43.2 MB in the end (delta: -5.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 00:08:13,127 INFO L168 Benchmark]: Witness Printer took 2.50 ms. Allocated memory is still 67.1 MB. Free memory was 43.2 MB in the beginning and 43.0 MB in the end (delta: 256.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 00:08:13,130 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 46.1 MB. Free memory was 28.4 MB in the beginning and 28.4 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 189.24 ms. Allocated memory is still 67.1 MB. Free memory was 42.5 MB in the beginning and 48.0 MB in the end (delta: -5.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.10 ms. Allocated memory is still 67.1 MB. Free memory was 48.0 MB in the beginning and 51.2 MB in the end (delta: -3.1 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.71 ms. Allocated memory is still 67.1 MB. Free memory was 51.2 MB in the beginning and 50.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 306.08 ms. Allocated memory is still 67.1 MB. Free memory was 50.2 MB in the beginning and 38.6 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 160.62 ms. Allocated memory is still 67.1 MB. Free memory was 38.2 MB in the beginning and 43.2 MB in the end (delta: -5.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 2.50 ms. Allocated memory is still 67.1 MB. Free memory was 43.2 MB in the beginning and 43.0 MB in the end (delta: 256.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 12]: 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 12. Possible FailurePath: [L7] float a; [L8] double b; [L11] a=1.25L [L12] COND TRUE !(a==1.25) [L12] reach_error() - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 23]: 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 1 procedures, 20 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 116.0ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 5.4ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 3.0ms SsaConstructionTime, 17.9ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 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 [2021-08-26 00:08:13,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 00:08:15,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 00:08:15,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 00:08:15,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 00:08:15,479 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 00:08:15,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 00:08:15,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 00:08:15,487 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 00:08:15,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 00:08:15,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 00:08:15,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 00:08:15,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 00:08:15,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 00:08:15,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 00:08:15,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 00:08:15,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 00:08:15,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 00:08:15,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 00:08:15,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 00:08:15,511 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 00:08:15,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 00:08:15,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 00:08:15,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 00:08:15,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 00:08:15,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 00:08:15,520 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 00:08:15,521 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 00:08:15,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 00:08:15,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 00:08:15,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 00:08:15,523 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 00:08:15,524 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 00:08:15,525 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 00:08:15,526 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 00:08:15,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 00:08:15,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 00:08:15,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 00:08:15,527 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 00:08:15,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 00:08:15,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 00:08:15,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 00:08:15,532 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-26 00:08:15,563 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 00:08:15,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 00:08:15,564 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 00:08:15,565 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 00:08:15,566 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 00:08:15,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 00:08:15,566 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 00:08:15,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 00:08:15,567 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 00:08:15,567 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 00:08:15,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 00:08:15,568 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 00:08:15,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 00:08:15,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 00:08:15,568 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-26 00:08:15,568 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-26 00:08:15,568 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 00:08:15,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 00:08:15,569 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 00:08:15,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 00:08:15,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 00:08:15,569 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 00:08:15,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 00:08:15,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 00:08:15,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 00:08:15,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 00:08:15,570 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 00:08:15,570 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-26 00:08:15,570 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-26 00:08:15,571 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 00:08:15,571 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 00:08:15,571 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-26 00:08:15,571 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 069e404bf7b01a351383c4004538ba52022db96a [2021-08-26 00:08:15,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 00:08:15,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 00:08:15,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 00:08:15,843 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 00:08:15,843 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 00:08:15,844 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float2.c [2021-08-26 00:08:15,918 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/068f41724/5c8dba7726a44a0aa78d094c912f6bd4/FLAG42a86b75e [2021-08-26 00:08:16,233 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 00:08:16,233 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float2.c [2021-08-26 00:08:16,238 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/068f41724/5c8dba7726a44a0aa78d094c912f6bd4/FLAG42a86b75e [2021-08-26 00:08:16,669 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/068f41724/5c8dba7726a44a0aa78d094c912f6bd4 [2021-08-26 00:08:16,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 00:08:16,672 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 00:08:16,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 00:08:16,673 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 00:08:16,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 00:08:16,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:08:16" (1/1) ... [2021-08-26 00:08:16,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33188bad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:16, skipping insertion in model container [2021-08-26 00:08:16,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:08:16" (1/1) ... [2021-08-26 00:08:16,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 00:08:16,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 00:08:16,764 WARN L228 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/float2.c[366,379] [2021-08-26 00:08:16,766 WARN L228 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/float2.c[420,433] [2021-08-26 00:08:16,767 WARN L228 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/float2.c[493,506] [2021-08-26 00:08:16,768 WARN L228 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/float2.c[557,570] [2021-08-26 00:08:16,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 00:08:16,776 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 00:08:16,784 WARN L228 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/float2.c[366,379] [2021-08-26 00:08:16,785 WARN L228 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/float2.c[420,433] [2021-08-26 00:08:16,785 WARN L228 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/float2.c[493,506] [2021-08-26 00:08:16,786 WARN L228 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/float2.c[557,570] [2021-08-26 00:08:16,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 00:08:16,794 INFO L208 MainTranslator]: Completed translation [2021-08-26 00:08:16,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:16 WrapperNode [2021-08-26 00:08:16,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 00:08:16,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 00:08:16,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 00:08:16,796 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 00:08:16,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:16" (1/1) ... [2021-08-26 00:08:16,805 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:16" (1/1) ... [2021-08-26 00:08:16,846 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 00:08:16,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 00:08:16,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 00:08:16,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 00:08:16,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:16" (1/1) ... [2021-08-26 00:08:16,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:16" (1/1) ... [2021-08-26 00:08:16,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:16" (1/1) ... [2021-08-26 00:08:16,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:16" (1/1) ... [2021-08-26 00:08:16,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:16" (1/1) ... [2021-08-26 00:08:16,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:16" (1/1) ... [2021-08-26 00:08:16,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:16" (1/1) ... [2021-08-26 00:08:16,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 00:08:16,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 00:08:16,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 00:08:16,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 00:08:16,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:16" (1/1) ... [2021-08-26 00:08:16,872 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 00:08:16,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 00:08:16,885 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 00:08:16,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 00:08:16,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 00:08:16,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 00:08:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-26 00:08:16,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 00:08:17,331 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 00:08:17,331 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-26 00:08:17,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:08:17 BoogieIcfgContainer [2021-08-26 00:08:17,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 00:08:17,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 00:08:17,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 00:08:17,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 00:08:17,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 12:08:16" (1/3) ... [2021-08-26 00:08:17,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@309c133 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:08:17, skipping insertion in model container [2021-08-26 00:08:17,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:08:16" (2/3) ... [2021-08-26 00:08:17,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@309c133 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:08:17, skipping insertion in model container [2021-08-26 00:08:17,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:08:17" (3/3) ... [2021-08-26 00:08:17,343 INFO L111 eAbstractionObserver]: Analyzing ICFG float2.c [2021-08-26 00:08:17,346 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 00:08:17,346 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-08-26 00:08:17,373 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 00:08:17,377 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 00:08:17,378 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-26 00:08:17,386 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 00:08:17,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-08-26 00:08:17,389 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 00:08:17,389 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-08-26 00:08:17,389 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-08-26 00:08:17,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 00:08:17,393 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-08-26 00:08:17,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 00:08:17,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [622630781] [2021-08-26 00:08:17,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 00:08:17,400 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 00:08:17,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 00:08:17,402 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 00:08:17,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-26 00:08:17,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 00:08:17,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-26 00:08:17,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 00:08:17,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 00:08:17,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 00:08:17,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 00:08:17,902 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 00:08:17,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [622630781] [2021-08-26 00:08:17,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [622630781] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 00:08:17,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 00:08:17,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-26 00:08:17,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994311952] [2021-08-26 00:08:17,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 00:08:17,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 00:08:17,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 00:08:17,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 00:08:17,923 INFO L87 Difference]: Start difference. First operand has 20 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 19 states have internal predecessors, (23), 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 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 00:08:18,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 00:08:18,026 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-08-26 00:08:18,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 00:08:18,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2021-08-26 00:08:18,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 00:08:18,032 INFO L225 Difference]: With dead ends: 35 [2021-08-26 00:08:18,032 INFO L226 Difference]: Without dead ends: 15 [2021-08-26 00:08:18,034 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 202.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 00:08:18,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-08-26 00:08:18,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-08-26 00:08:18,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 14 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 00:08:18,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2021-08-26 00:08:18,068 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 4 [2021-08-26 00:08:18,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 00:08:18,069 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2021-08-26 00:08:18,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 00:08:18,070 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2021-08-26 00:08:18,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-26 00:08:18,070 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 00:08:18,070 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-26 00:08:18,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-08-26 00:08:18,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 00:08:18,284 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-08-26 00:08:18,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 00:08:18,285 INFO L82 PathProgramCache]: Analyzing trace with hash 889629862, now seen corresponding path program 1 times [2021-08-26 00:08:18,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 00:08:18,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1147202082] [2021-08-26 00:08:18,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 00:08:18,286 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 00:08:18,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 00:08:18,287 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 00:08:18,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-26 00:08:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 00:08:18,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-26 00:08:18,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 00:08:18,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 00:08:18,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 00:08:18,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 00:08:18,449 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 00:08:18,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1147202082] [2021-08-26 00:08:18,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1147202082] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 00:08:18,449 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 00:08:18,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-26 00:08:18,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616507724] [2021-08-26 00:08:18,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 00:08:18,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 00:08:18,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 00:08:18,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 00:08:18,454 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 00:08:18,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 00:08:18,526 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2021-08-26 00:08:18,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 00:08:18,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2021-08-26 00:08:18,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 00:08:18,528 INFO L225 Difference]: With dead ends: 15 [2021-08-26 00:08:18,528 INFO L226 Difference]: Without dead ends: 13 [2021-08-26 00:08:18,528 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 00:08:18,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-08-26 00:08:18,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-08-26 00:08:18,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 12 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) [2021-08-26 00:08:18,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2021-08-26 00:08:18,530 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 6 [2021-08-26 00:08:18,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 00:08:18,530 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2021-08-26 00:08:18,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 00:08:18,530 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2021-08-26 00:08:18,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-26 00:08:18,530 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 00:08:18,530 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 00:08:18,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-26 00:08:18,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 00:08:18,738 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-08-26 00:08:18,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 00:08:18,738 INFO L82 PathProgramCache]: Analyzing trace with hash 235930184, now seen corresponding path program 1 times [2021-08-26 00:08:18,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 00:08:18,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [292586484] [2021-08-26 00:08:18,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 00:08:18,739 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 00:08:18,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 00:08:18,741 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 00:08:18,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-26 00:08:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 00:08:18,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-26 00:08:18,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 00:08:18,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 00:08:18,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 00:08:18,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 00:08:18,907 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 00:08:18,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [292586484] [2021-08-26 00:08:18,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [292586484] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 00:08:18,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 00:08:18,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-26 00:08:18,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675549742] [2021-08-26 00:08:18,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 00:08:18,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 00:08:18,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 00:08:18,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 00:08:18,909 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 00:08:18,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 00:08:18,987 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2021-08-26 00:08:18,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 00:08:18,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2021-08-26 00:08:18,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 00:08:18,988 INFO L225 Difference]: With dead ends: 13 [2021-08-26 00:08:18,988 INFO L226 Difference]: Without dead ends: 11 [2021-08-26 00:08:18,988 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 00:08:18,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-08-26 00:08:18,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-08-26 00:08:18,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.0) internal successors, (10), 10 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 00:08:18,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2021-08-26 00:08:18,989 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 8 [2021-08-26 00:08:18,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 00:08:18,989 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2021-08-26 00:08:18,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 00:08:18,989 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2021-08-26 00:08:18,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-26 00:08:18,990 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 00:08:18,990 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 00:08:18,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-26 00:08:19,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 00:08:19,190 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-08-26 00:08:19,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 00:08:19,191 INFO L82 PathProgramCache]: Analyzing trace with hash -904234870, now seen corresponding path program 1 times [2021-08-26 00:08:19,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 00:08:19,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022489199] [2021-08-26 00:08:19,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 00:08:19,191 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 00:08:19,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 00:08:19,205 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 00:08:19,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-26 00:08:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 00:08:19,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-26 00:08:19,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 00:08:19,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 00:08:19,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 00:08:19,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 00:08:19,336 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 00:08:19,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2022489199] [2021-08-26 00:08:19,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2022489199] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 00:08:19,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 00:08:19,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-26 00:08:19,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667222469] [2021-08-26 00:08:19,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 00:08:19,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 00:08:19,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 00:08:19,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 00:08:19,338 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 00:08:19,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 00:08:19,429 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2021-08-26 00:08:19,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 00:08:19,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2021-08-26 00:08:19,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 00:08:19,429 INFO L225 Difference]: With dead ends: 11 [2021-08-26 00:08:19,430 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 00:08:19,430 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 00:08:19,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 00:08:19,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 00:08:19,430 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) [2021-08-26 00:08:19,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 00:08:19,430 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-08-26 00:08:19,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 00:08:19,430 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 00:08:19,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 00:08:19,430 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 00:08:19,431 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 00:08:19,433 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 00:08:19,433 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 00:08:19,433 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 00:08:19,433 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 00:08:19,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-26 00:08:19,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 00:08:19,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 00:08:19,644 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 00:08:19,644 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2021-08-26 00:08:19,644 INFO L857 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2021-08-26 00:08:19,644 INFO L857 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-08-26 00:08:19,644 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 23) no Hoare annotation was computed. [2021-08-26 00:08:19,644 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-08-26 00:08:19,644 INFO L857 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-08-26 00:08:19,644 INFO L857 garLoopResultBuilder]: For program point L19-3(line 19) no Hoare annotation was computed. [2021-08-26 00:08:19,644 INFO L857 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2021-08-26 00:08:19,645 INFO L857 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-08-26 00:08:19,645 INFO L857 garLoopResultBuilder]: For program point L15-3(line 15) no Hoare annotation was computed. [2021-08-26 00:08:19,645 INFO L857 garLoopResultBuilder]: For program point L5(lines 5 24) no Hoare annotation was computed. [2021-08-26 00:08:19,645 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 00:08:19,645 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 00:08:19,645 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 00:08:19,645 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-08-26 00:08:19,645 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-08-26 00:08:19,645 INFO L857 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-08-26 00:08:19,645 INFO L857 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-08-26 00:08:19,645 INFO L857 garLoopResultBuilder]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-08-26 00:08:19,648 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 00:08:19,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 12:08:19 BoogieIcfgContainer [2021-08-26 00:08:19,658 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 00:08:19,659 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 00:08:19,659 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 00:08:19,665 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 00:08:19,665 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:08:17" (3/4) ... [2021-08-26 00:08:19,670 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 00:08:19,679 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-08-26 00:08:19,679 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 00:08:19,679 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-26 00:08:19,680 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 00:08:19,739 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 00:08:19,740 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 00:08:19,741 INFO L168 Benchmark]: Toolchain (without parser) took 3068.32 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 37.4 MB in the beginning and 32.1 MB in the end (delta: 5.3 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. [2021-08-26 00:08:19,741 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 44.0 MB. Free memory was 25.9 MB in the beginning and 25.8 MB in the end (delta: 35.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 00:08:19,742 INFO L168 Benchmark]: CACSL2BoogieTranslator took 122.55 ms. Allocated memory is still 54.5 MB. Free memory was 37.1 MB in the beginning and 27.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-26 00:08:19,742 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.94 ms. Allocated memory is still 54.5 MB. Free memory was 27.1 MB in the beginning and 38.3 MB in the end (delta: -11.2 MB). Peak memory consumption was 3.1 MB. Max. memory is 16.1 GB. [2021-08-26 00:08:19,742 INFO L168 Benchmark]: Boogie Preprocessor took 13.67 ms. Allocated memory is still 54.5 MB. Free memory was 38.3 MB in the beginning and 37.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 00:08:19,742 INFO L168 Benchmark]: RCFGBuilder took 464.92 ms. Allocated memory is still 54.5 MB. Free memory was 37.2 MB in the beginning and 24.9 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 00:08:19,744 INFO L168 Benchmark]: TraceAbstraction took 2325.12 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 24.4 MB in the beginning and 34.7 MB in the end (delta: -10.3 MB). Peak memory consumption was 3.9 MB. Max. memory is 16.1 GB. [2021-08-26 00:08:19,744 INFO L168 Benchmark]: Witness Printer took 80.63 ms. Allocated memory is still 67.1 MB. Free memory was 34.7 MB in the beginning and 32.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 00:08:19,750 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 44.0 MB. Free memory was 25.9 MB in the beginning and 25.8 MB in the end (delta: 35.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 122.55 ms. Allocated memory is still 54.5 MB. Free memory was 37.1 MB in the beginning and 27.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.94 ms. Allocated memory is still 54.5 MB. Free memory was 27.1 MB in the beginning and 38.3 MB in the end (delta: -11.2 MB). Peak memory consumption was 3.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 13.67 ms. Allocated memory is still 54.5 MB. Free memory was 38.3 MB in the beginning and 37.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 464.92 ms. Allocated memory is still 54.5 MB. Free memory was 37.2 MB in the beginning and 24.9 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2325.12 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 24.4 MB in the beginning and 34.7 MB in the end (delta: -10.3 MB). Peak memory consumption was 3.9 MB. Max. memory is 16.1 GB. * Witness Printer took 80.63 ms. Allocated memory is still 67.1 MB. Free memory was 34.7 MB in the beginning and 32.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 15]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 23]: 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, 20 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 2275.4ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 5.9ms, AutomataDifference: 373.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 2.8ms, InitialAbstractionConstructionTime: 5.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 34 SDtfs, 14 SDslu, 5 SDs, 0 SdLazy, 37 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 282.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 233.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 11.9ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0ms HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 66.1ms SsaConstructionTime, 77.6ms SatisfiabilityAnalysisTime, 674.6ms InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 92 SizeOfPredicates, 8 NumberOfNonLiveVariables, 112 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-26 00:08:19,787 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...