./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/square_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf 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-cdfpl/square_1.i -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 eb1826e8952b1eb941e064a85d9720fcb947ea7c ................................................................................................................................................................................................................................................................................... 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-cdfpl/square_1.i -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 eb1826e8952b1eb941e064a85d9720fcb947ea7c .................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 06:27:47,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 06:27:47,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 06:27:47,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 06:27:47,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 06:27:47,760 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 06:27:47,761 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 06:27:47,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 06:27:47,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 06:27:47,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 06:27:47,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 06:27:47,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 06:27:47,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 06:27:47,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 06:27:47,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 06:27:47,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 06:27:47,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 06:27:47,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 06:27:47,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 06:27:47,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 06:27:47,794 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 06:27:47,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 06:27:47,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 06:27:47,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 06:27:47,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 06:27:47,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 06:27:47,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 06:27:47,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 06:27:47,806 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 06:27:47,807 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 06:27:47,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 06:27:47,807 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 06:27:47,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 06:27:47,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 06:27:47,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 06:27:47,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 06:27:47,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 06:27:47,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 06:27:47,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 06:27:47,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 06:27:47,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 06:27:47,818 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 06:27:47,853 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 06:27:47,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 06:27:47,855 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 06:27:47,855 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 06:27:47,857 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 06:27:47,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 06:27:47,857 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 06:27:47,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 06:27:47,858 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 06:27:47,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 06:27:47,859 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 06:27:47,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 06:27:47,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 06:27:47,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 06:27:47,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 06:27:47,860 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 06:27:47,860 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 06:27:47,860 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 06:27:47,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 06:27:47,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 06:27:47,861 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 06:27:47,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 06:27:47,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 06:27:47,873 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 06:27:47,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 06:27:47,873 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 06:27:47,874 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 06:27:47,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 06:27:47,874 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 06:27:47,874 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 06:27:47,875 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb1826e8952b1eb941e064a85d9720fcb947ea7c [2021-08-29 06:27:48,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 06:27:48,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 06:27:48,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 06:27:48,224 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 06:27:48,224 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 06:27:48,226 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/square_1.i [2021-08-29 06:27:48,284 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90b65d67f/6c3122fc265c438eaf6fd28c54efa22e/FLAG05ac74531 [2021-08-29 06:27:48,671 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 06:27:48,672 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/square_1.i [2021-08-29 06:27:48,676 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90b65d67f/6c3122fc265c438eaf6fd28c54efa22e/FLAG05ac74531 [2021-08-29 06:27:49,094 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90b65d67f/6c3122fc265c438eaf6fd28c54efa22e [2021-08-29 06:27:49,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 06:27:49,098 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 06:27:49,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 06:27:49,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 06:27:49,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 06:27:49,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:27:49" (1/1) ... [2021-08-29 06:27:49,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b219462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:49, skipping insertion in model container [2021-08-29 06:27:49,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:27:49" (1/1) ... [2021-08-29 06:27:49,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 06:27:49,127 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 06:27:49,232 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-cdfpl/square_1.i[1128,1141] [2021-08-29 06:27:49,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 06:27:49,242 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 06:27:49,254 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-cdfpl/square_1.i[1128,1141] [2021-08-29 06:27:49,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 06:27:49,265 INFO L208 MainTranslator]: Completed translation [2021-08-29 06:27:49,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:49 WrapperNode [2021-08-29 06:27:49,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 06:27:49,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 06:27:49,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 06:27:49,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 06:27:49,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:49" (1/1) ... [2021-08-29 06:27:49,307 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:49" (1/1) ... [2021-08-29 06:27:49,321 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 06:27:49,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 06:27:49,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 06:27:49,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 06:27:49,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:49" (1/1) ... [2021-08-29 06:27:49,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:49" (1/1) ... [2021-08-29 06:27:49,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:49" (1/1) ... [2021-08-29 06:27:49,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:49" (1/1) ... [2021-08-29 06:27:49,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:49" (1/1) ... [2021-08-29 06:27:49,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:49" (1/1) ... [2021-08-29 06:27:49,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:49" (1/1) ... [2021-08-29 06:27:49,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 06:27:49,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 06:27:49,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 06:27:49,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 06:27:49,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:49" (1/1) ... [2021-08-29 06:27:49,368 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 06:27:49,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 06:27:49,396 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) [2021-08-29 06:27:49,417 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 [2021-08-29 06:27:49,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 06:27:49,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 06:27:49,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 06:27:49,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 06:27:49,559 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 06:27:49,559 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-08-29 06:27:49,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:27:49 BoogieIcfgContainer [2021-08-29 06:27:49,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 06:27:49,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 06:27:49,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 06:27:49,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 06:27:49,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 06:27:49" (1/3) ... [2021-08-29 06:27:49,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79343fd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:27:49, skipping insertion in model container [2021-08-29 06:27:49,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:49" (2/3) ... [2021-08-29 06:27:49,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79343fd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:27:49, skipping insertion in model container [2021-08-29 06:27:49,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:27:49" (3/3) ... [2021-08-29 06:27:49,568 INFO L111 eAbstractionObserver]: Analyzing ICFG square_1.i [2021-08-29 06:27:49,574 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 06:27:49,574 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 06:27:49,623 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 06:27:49,631 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 [2021-08-29 06:27:49,631 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 06:27:49,644 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 06:27:49,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-29 06:27:49,658 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 06:27:49,659 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-29 06:27:49,660 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 06:27:49,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 06:27:49,667 INFO L82 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-08-29 06:27:49,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 06:27:49,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396091482] [2021-08-29 06:27:49,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 06:27:49,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 06:27:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 06:27:49,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 06:27:49,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 06:27:49,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396091482] [2021-08-29 06:27:49,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396091482] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 06:27:49,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 06:27:49,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 06:27:49,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444290453] [2021-08-29 06:27:49,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 06:27:49,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 06:27:49,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 06:27:49,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 06:27:49,878 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-08-29 06:27:49,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 06:27:49,932 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-08-29 06:27:49,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 06:27:49,934 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 [2021-08-29 06:27:49,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 06:27:49,940 INFO L225 Difference]: With dead ends: 19 [2021-08-29 06:27:49,952 INFO L226 Difference]: Without dead ends: 7 [2021-08-29 06:27:49,955 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 06:27:49,958 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.18ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.71ms IncrementalHoareTripleChecker+Time [2021-08-29 06:27:49,959 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 10 Unknown, 0 Unchecked, 0.18ms Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 42.71ms Time] [2021-08-29 06:27:49,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-08-29 06:27:49,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-08-29 06:27:50,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 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) [2021-08-29 06:27:50,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-08-29 06:27:50,011 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-08-29 06:27:50,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 06:27:50,012 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-08-29 06:27:50,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-08-29 06:27:50,012 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-08-29 06:27:50,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-29 06:27:50,013 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 06:27:50,013 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-29 06:27:50,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 06:27:50,014 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 06:27:50,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 06:27:50,014 INFO L82 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-08-29 06:27:50,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 06:27:50,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025792137] [2021-08-29 06:27:50,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 06:27:50,015 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 06:27:50,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 06:27:50,057 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 06:27:50,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 06:27:50,083 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 06:27:50,083 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 06:27:50,085 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 06:27:50,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 06:27:50,091 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 06:27:50,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 06:27:50 BoogieIcfgContainer [2021-08-29 06:27:50,106 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 06:27:50,106 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 06:27:50,107 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 06:27:50,107 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 06:27:50,107 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:27:49" (3/4) ... [2021-08-29 06:27:50,118 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-29 06:27:50,118 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 06:27:50,119 INFO L158 Benchmark]: Toolchain (without parser) took 1020.86ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 29.6MB in the beginning and 45.3MB in the end (delta: -15.7MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. [2021-08-29 06:27:50,120 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 52.4MB. Free memory was 34.1MB in the beginning and 34.0MB in the end (delta: 33.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 06:27:50,120 INFO L158 Benchmark]: CACSL2BoogieTranslator took 166.18ms. Allocated memory is still 52.4MB. Free memory was 29.4MB in the beginning and 33.0MB in the end (delta: -3.5MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2021-08-29 06:27:50,121 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.43ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 33.0MB in the beginning and 46.0MB in the end (delta: -13.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 06:27:50,122 INFO L158 Benchmark]: Boogie Preprocessor took 37.26ms. Allocated memory is still 62.9MB. Free memory was 46.0MB in the beginning and 45.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 06:27:50,122 INFO L158 Benchmark]: RCFGBuilder took 200.72ms. Allocated memory is still 62.9MB. Free memory was 45.0MB in the beginning and 37.1MB in the end (delta: 7.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-08-29 06:27:50,122 INFO L158 Benchmark]: TraceAbstraction took 542.99ms. Allocated memory is still 62.9MB. Free memory was 36.6MB in the beginning and 29.4MB in the end (delta: 7.2MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2021-08-29 06:27:50,123 INFO L158 Benchmark]: Witness Printer took 11.97ms. Allocated memory is still 62.9MB. Free memory was 29.4MB in the beginning and 45.3MB in the end (delta: -15.8MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. [2021-08-29 06:27:50,126 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 52.4MB. Free memory was 34.1MB in the beginning and 34.0MB in the end (delta: 33.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 166.18ms. Allocated memory is still 52.4MB. Free memory was 29.4MB in the beginning and 33.0MB in the end (delta: -3.5MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.43ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 33.0MB in the beginning and 46.0MB in the end (delta: -13.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.26ms. Allocated memory is still 62.9MB. Free memory was 46.0MB in the beginning and 45.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 200.72ms. Allocated memory is still 62.9MB. Free memory was 45.0MB in the beginning and 37.1MB in the end (delta: 7.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 542.99ms. Allocated memory is still 62.9MB. Free memory was 36.6MB in the beginning and 29.4MB in the end (delta: 7.2MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * Witness Printer took 11.97ms. Allocated memory is still 62.9MB. Free memory was 29.4MB in the beginning and 45.3MB in the end (delta: -15.8MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 29]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 28, overapproximation of someBinaryArithmeticFLOAToperation at line 26. Possible FailurePath: [L20] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L23] float x = IN; [L25-L26] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L28] COND TRUE !(result >= 0.0f && result < 1.39f) [L29] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 469.03ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 17.48ms, AutomataDifference: 108.28ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 9.68ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 42.71ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 38.50ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10 IncrementalHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 10 mSolverCounterSat, 0.18ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 26.14ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 11.91ms SsaConstructionTime, 66.41ms SatisfiabilityAnalysisTime, 71.34ms InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-29 06:27:50,163 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... ### Bit-precise run ### This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 06:27:51,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 06:27:51,937 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 06:27:51,976 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 06:27:51,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 06:27:51,979 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 06:27:51,981 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 06:27:51,985 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 06:27:51,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 06:27:51,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 06:27:51,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 06:27:52,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 06:27:52,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 06:27:52,005 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 06:27:52,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 06:27:52,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 06:27:52,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 06:27:52,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 06:27:52,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 06:27:52,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 06:27:52,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 06:27:52,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 06:27:52,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 06:27:52,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 06:27:52,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 06:27:52,029 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 06:27:52,029 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 06:27:52,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 06:27:52,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 06:27:52,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 06:27:52,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 06:27:52,033 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 06:27:52,035 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 06:27:52,035 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 06:27:52,036 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 06:27:52,037 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 06:27:52,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 06:27:52,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 06:27:52,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 06:27:52,039 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 06:27:52,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 06:27:52,043 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-29 06:27:52,078 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 06:27:52,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 06:27:52,080 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 06:27:52,080 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 06:27:52,082 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 06:27:52,082 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 06:27:52,082 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 06:27:52,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 06:27:52,082 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 06:27:52,082 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 06:27:52,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 06:27:52,083 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 06:27:52,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 06:27:52,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 06:27:52,083 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-29 06:27:52,084 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-29 06:27:52,084 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 06:27:52,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 06:27:52,084 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 06:27:52,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 06:27:52,084 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 06:27:52,085 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 06:27:52,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 06:27:52,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 06:27:52,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 06:27:52,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 06:27:52,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 06:27:52,086 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-29 06:27:52,086 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-29 06:27:52,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 06:27:52,086 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 06:27:52,086 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-29 06:27:52,087 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb1826e8952b1eb941e064a85d9720fcb947ea7c [2021-08-29 06:27:52,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 06:27:52,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 06:27:52,416 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 06:27:52,417 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 06:27:52,418 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 06:27:52,419 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/square_1.i [2021-08-29 06:27:52,478 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf9989dff/bb25fc51d6e24ae1a614f0f909518bca/FLAG35a651d34 [2021-08-29 06:27:52,841 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 06:27:52,842 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/square_1.i [2021-08-29 06:27:52,854 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf9989dff/bb25fc51d6e24ae1a614f0f909518bca/FLAG35a651d34 [2021-08-29 06:27:52,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf9989dff/bb25fc51d6e24ae1a614f0f909518bca [2021-08-29 06:27:52,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 06:27:52,882 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 06:27:52,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 06:27:52,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 06:27:52,888 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 06:27:52,889 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:27:52" (1/1) ... [2021-08-29 06:27:52,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@437f18cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:52, skipping insertion in model container [2021-08-29 06:27:52,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:27:52" (1/1) ... [2021-08-29 06:27:52,896 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 06:27:52,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 06:27:53,043 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-cdfpl/square_1.i[1128,1141] [2021-08-29 06:27:53,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 06:27:53,056 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 06:27:53,087 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-cdfpl/square_1.i[1128,1141] [2021-08-29 06:27:53,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 06:27:53,114 INFO L208 MainTranslator]: Completed translation [2021-08-29 06:27:53,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:53 WrapperNode [2021-08-29 06:27:53,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 06:27:53,116 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 06:27:53,116 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 06:27:53,117 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 06:27:53,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:53" (1/1) ... [2021-08-29 06:27:53,137 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:53" (1/1) ... [2021-08-29 06:27:53,152 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 06:27:53,153 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 06:27:53,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 06:27:53,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 06:27:53,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:53" (1/1) ... [2021-08-29 06:27:53,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:53" (1/1) ... [2021-08-29 06:27:53,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:53" (1/1) ... [2021-08-29 06:27:53,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:53" (1/1) ... [2021-08-29 06:27:53,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:53" (1/1) ... [2021-08-29 06:27:53,182 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:53" (1/1) ... [2021-08-29 06:27:53,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:53" (1/1) ... [2021-08-29 06:27:53,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 06:27:53,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 06:27:53,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 06:27:53,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 06:27:53,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:53" (1/1) ... [2021-08-29 06:27:53,198 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 06:27:53,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 06:27:53,222 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) [2021-08-29 06:27:53,248 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 [2021-08-29 06:27:53,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-29 06:27:53,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 06:27:53,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 06:27:53,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 06:27:53,407 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 06:27:53,408 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-08-29 06:27:53,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:27:53 BoogieIcfgContainer [2021-08-29 06:27:53,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 06:27:53,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 06:27:53,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 06:27:53,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 06:27:53,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 06:27:52" (1/3) ... [2021-08-29 06:27:53,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e08e7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:27:53, skipping insertion in model container [2021-08-29 06:27:53,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:53" (2/3) ... [2021-08-29 06:27:53,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e08e7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:27:53, skipping insertion in model container [2021-08-29 06:27:53,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:27:53" (3/3) ... [2021-08-29 06:27:53,419 INFO L111 eAbstractionObserver]: Analyzing ICFG square_1.i [2021-08-29 06:27:53,424 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 06:27:53,424 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 06:27:53,478 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 06:27:53,491 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 [2021-08-29 06:27:53,492 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 06:27:53,503 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 06:27:53,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-29 06:27:53,510 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 06:27:53,511 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-29 06:27:53,512 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 06:27:53,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 06:27:53,517 INFO L82 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-08-29 06:27:53,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 06:27:53,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2094581520] [2021-08-29 06:27:53,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 06:27:53,528 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 06:27:53,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 06:27:53,534 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) [2021-08-29 06:27:53,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-29 06:27:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 06:27:53,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-29 06:27:53,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 06:27:53,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 06:27:53,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 06:27:54,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 06:27:54,019 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 06:27:54,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2094581520] [2021-08-29 06:27:54,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2094581520] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 06:27:54,020 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 06:27:54,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-29 06:27:54,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041531529] [2021-08-29 06:27:54,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 06:27:54,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 06:27:54,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 06:27:54,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 06:27:54,047 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-08-29 06:27:56,326 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 06:27:56,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 06:27:56,430 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-08-29 06:27:56,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 06:27:56,433 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 [2021-08-29 06:27:56,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 06:27:56,437 INFO L225 Difference]: With dead ends: 19 [2021-08-29 06:27:56,437 INFO L226 Difference]: Without dead ends: 7 [2021-08-29 06:27:56,439 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.08ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 06:27:56,441 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2302.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.22ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2370.30ms IncrementalHoareTripleChecker+Time [2021-08-29 06:27:56,443 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 10 Unknown, 0 Unchecked, 0.22ms Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 1 Unknown, 0 Unchecked, 2370.30ms Time] [2021-08-29 06:27:56,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-08-29 06:27:56,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-08-29 06:27:56,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 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) [2021-08-29 06:27:56,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-08-29 06:27:56,464 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-08-29 06:27:56,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 06:27:56,464 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-08-29 06:27:56,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-08-29 06:27:56,465 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-08-29 06:27:56,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-29 06:27:56,465 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 06:27:56,465 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-29 06:27:56,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-29 06:27:56,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 06:27:56,678 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 06:27:56,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 06:27:56,679 INFO L82 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-08-29 06:27:56,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 06:27:56,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641223740] [2021-08-29 06:27:56,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 06:27:56,680 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 06:27:56,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 06:27:56,681 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) [2021-08-29 06:27:56,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-29 06:29:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 06:29:35,026 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 06:29:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 06:29:38,576 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-29 06:29:38,576 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 06:29:38,577 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 06:29:38,611 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-08-29 06:29:38,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 06:29:38,785 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 06:29:38,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 06:29:38 BoogieIcfgContainer [2021-08-29 06:29:38,805 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 06:29:38,806 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 06:29:38,807 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 06:29:38,807 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 06:29:38,808 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:27:53" (3/4) ... [2021-08-29 06:29:38,809 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-29 06:29:38,854 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 06:29:38,854 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 06:29:38,855 INFO L158 Benchmark]: Toolchain (without parser) took 105973.00ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 32.0MB in the beginning and 44.1MB in the end (delta: -12.1MB). Peak memory consumption was 1.2MB. Max. memory is 16.1GB. [2021-08-29 06:29:38,857 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 54.5MB. Free memory was 35.7MB in the beginning and 35.7MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 06:29:38,857 INFO L158 Benchmark]: CACSL2BoogieTranslator took 230.63ms. Allocated memory is still 54.5MB. Free memory was 31.9MB in the beginning and 37.1MB in the end (delta: -5.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-29 06:29:38,857 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.92ms. Allocated memory is still 54.5MB. Free memory was 37.1MB in the beginning and 35.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 06:29:38,859 INFO L158 Benchmark]: Boogie Preprocessor took 36.73ms. Allocated memory is still 54.5MB. Free memory was 35.6MB in the beginning and 34.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 06:29:38,860 INFO L158 Benchmark]: RCFGBuilder took 218.52ms. Allocated memory is still 54.5MB. Free memory was 34.5MB in the beginning and 26.3MB in the end (delta: 8.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-08-29 06:29:38,860 INFO L158 Benchmark]: TraceAbstraction took 105394.03ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 25.9MB in the beginning and 45.9MB in the end (delta: -20.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 06:29:38,860 INFO L158 Benchmark]: Witness Printer took 48.16ms. Allocated memory is still 67.1MB. Free memory was 45.6MB in the beginning and 44.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 06:29:38,864 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 54.5MB. Free memory was 35.7MB in the beginning and 35.7MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 230.63ms. Allocated memory is still 54.5MB. Free memory was 31.9MB in the beginning and 37.1MB in the end (delta: -5.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.92ms. Allocated memory is still 54.5MB. Free memory was 37.1MB in the beginning and 35.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.73ms. Allocated memory is still 54.5MB. Free memory was 35.6MB in the beginning and 34.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 218.52ms. Allocated memory is still 54.5MB. Free memory was 34.5MB in the beginning and 26.3MB in the end (delta: 8.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 105394.03ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 25.9MB in the beginning and 45.9MB in the end (delta: -20.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 48.16ms. Allocated memory is still 67.1MB. Free memory was 45.6MB in the beginning and 44.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 29]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L20] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L23] float x = IN; [L25-L26] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L28] COND TRUE !(result >= 0.0f && result < 1.39f) [L29] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 105306.87ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 10.55ms, AutomataDifference: 2418.18ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 8.23ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 2370.30ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2302.49ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9 IncrementalHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 9 mSolverCounterSat, 0.22ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.08ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 10.76ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.01ms SsaConstructionTime, 98646.26ms SatisfiabilityAnalysisTime, 115.92ms InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 26 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-08-29 06:29:38,948 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...