./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-acceleration/simple_3-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e 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/loop-acceleration/simple_3-2.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 8b9c8396c2cadaebd0d1bf5efb2e2e779b8a2240a5737f65c06e64ea585aef3c --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-17 06:28:45,594 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 06:28:45,596 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 06:28:45,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 06:28:45,626 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 06:28:45,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 06:28:45,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 06:28:45,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 06:28:45,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 06:28:45,639 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 06:28:45,640 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 06:28:45,642 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 06:28:45,642 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 06:28:45,643 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 06:28:45,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 06:28:45,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 06:28:45,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 06:28:45,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 06:28:45,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 06:28:45,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 06:28:45,667 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 06:28:45,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 06:28:45,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 06:28:45,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 06:28:45,674 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 06:28:45,675 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 06:28:45,675 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 06:28:45,676 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 06:28:45,677 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 06:28:45,677 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 06:28:45,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 06:28:45,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 06:28:45,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 06:28:45,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 06:28:45,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 06:28:45,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 06:28:45,684 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 06:28:45,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 06:28:45,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 06:28:45,685 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 06:28:45,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 06:28:45,687 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 06:28:45,708 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 06:28:45,708 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 06:28:45,708 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 06:28:45,708 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 06:28:45,709 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 06:28:45,709 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 06:28:45,710 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 06:28:45,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 06:28:45,710 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 06:28:45,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 06:28:45,711 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 06:28:45,711 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 06:28:45,711 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 06:28:45,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 06:28:45,711 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 06:28:45,711 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 06:28:45,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 06:28:45,711 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 06:28:45,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 06:28:45,711 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 06:28:45,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 06:28:45,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 06:28:45,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 06:28:45,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 06:28:45,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 06:28:45,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 06:28:45,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 06:28:45,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 06:28:45,712 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 06:28:45,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 06:28:45,712 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 06:28:45,712 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 06:28:45,712 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 06:28:45,712 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 06:28:45,713 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 06:28:45,713 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b9c8396c2cadaebd0d1bf5efb2e2e779b8a2240a5737f65c06e64ea585aef3c [2023-02-17 06:28:45,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 06:28:45,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 06:28:45,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 06:28:45,947 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 06:28:45,948 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 06:28:45,948 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/simple_3-2.c [2023-02-17 06:28:46,891 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 06:28:47,023 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 06:28:47,024 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/simple_3-2.c [2023-02-17 06:28:47,028 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd751a1cd/e6064984a5ab4f569a58c3b26544cd7e/FLAGb7ae2c597 [2023-02-17 06:28:47,044 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd751a1cd/e6064984a5ab4f569a58c3b26544cd7e [2023-02-17 06:28:47,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 06:28:47,046 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 06:28:47,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 06:28:47,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 06:28:47,051 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 06:28:47,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 06:28:47" (1/1) ... [2023-02-17 06:28:47,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e331898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:28:47, skipping insertion in model container [2023-02-17 06:28:47,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 06:28:47" (1/1) ... [2023-02-17 06:28:47,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 06:28:47,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 06:28:47,185 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/simple_3-2.c[376,389] [2023-02-17 06:28:47,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 06:28:47,205 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 06:28:47,214 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/simple_3-2.c[376,389] [2023-02-17 06:28:47,215 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 06:28:47,225 INFO L208 MainTranslator]: Completed translation [2023-02-17 06:28:47,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:28:47 WrapperNode [2023-02-17 06:28:47,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 06:28:47,226 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 06:28:47,226 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 06:28:47,227 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 06:28:47,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:28:47" (1/1) ... [2023-02-17 06:28:47,235 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:28:47" (1/1) ... [2023-02-17 06:28:47,247 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 25 [2023-02-17 06:28:47,247 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 06:28:47,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 06:28:47,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 06:28:47,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 06:28:47,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:28:47" (1/1) ... [2023-02-17 06:28:47,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:28:47" (1/1) ... [2023-02-17 06:28:47,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:28:47" (1/1) ... [2023-02-17 06:28:47,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:28:47" (1/1) ... [2023-02-17 06:28:47,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:28:47" (1/1) ... [2023-02-17 06:28:47,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:28:47" (1/1) ... [2023-02-17 06:28:47,260 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:28:47" (1/1) ... [2023-02-17 06:28:47,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:28:47" (1/1) ... [2023-02-17 06:28:47,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 06:28:47,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 06:28:47,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 06:28:47,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 06:28:47,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:28:47" (1/1) ... [2023-02-17 06:28:47,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 06:28:47,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 06:28:47,306 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) [2023-02-17 06:28:47,311 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 [2023-02-17 06:28:47,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 06:28:47,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 06:28:47,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 06:28:47,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 06:28:47,372 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 06:28:47,376 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 06:28:47,490 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 06:28:47,506 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 06:28:47,506 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-17 06:28:47,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 06:28:47 BoogieIcfgContainer [2023-02-17 06:28:47,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 06:28:47,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 06:28:47,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 06:28:47,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 06:28:47,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 06:28:47" (1/3) ... [2023-02-17 06:28:47,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@635699c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 06:28:47, skipping insertion in model container [2023-02-17 06:28:47,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:28:47" (2/3) ... [2023-02-17 06:28:47,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@635699c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 06:28:47, skipping insertion in model container [2023-02-17 06:28:47,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 06:28:47" (3/3) ... [2023-02-17 06:28:47,513 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_3-2.c [2023-02-17 06:28:47,524 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 06:28:47,524 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 06:28:47,563 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 06:28:47,568 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@9815197, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 06:28:47,568 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 06:28:47,570 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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) [2023-02-17 06:28:47,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 06:28:47,574 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:28:47,574 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 06:28:47,575 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:28:47,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:28:47,580 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2023-02-17 06:28:47,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:28:47,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195820568] [2023-02-17 06:28:47,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:28:47,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:28:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:28:47,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:28:47,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:28:47,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195820568] [2023-02-17 06:28:47,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195820568] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 06:28:47,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 06:28:47,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 06:28:47,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707869034] [2023-02-17 06:28:47,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 06:28:47,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 06:28:47,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:28:47,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 06:28:47,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 06:28:47,996 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2023-02-17 06:28:48,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:28:48,035 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2023-02-17 06:28:48,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 06:28:48,037 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 [2023-02-17 06:28:48,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:28:48,041 INFO L225 Difference]: With dead ends: 26 [2023-02-17 06:28:48,051 INFO L226 Difference]: Without dead ends: 8 [2023-02-17 06:28:48,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-17 06:28:48,055 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 12 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 06:28:48,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 17 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 06:28:48,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-02-17 06:28:48,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-02-17 06:28:48,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 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) [2023-02-17 06:28:48,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-02-17 06:28:48,086 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2023-02-17 06:28:48,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:28:48,087 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-02-17 06:28:48,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2023-02-17 06:28:48,088 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-02-17 06:28:48,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-17 06:28:48,088 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:28:48,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-17 06:28:48,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 06:28:48,090 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:28:48,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:28:48,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2023-02-17 06:28:48,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:28:48,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764402748] [2023-02-17 06:28:48,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:28:48,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:28:48,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:28:48,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:28:48,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:28:48,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764402748] [2023-02-17 06:28:48,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764402748] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 06:28:48,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997015970] [2023-02-17 06:28:48,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:28:48,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:28:48,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 06:28:48,348 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 06:28:48,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 06:28:48,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:28:48,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-17 06:28:48,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 06:28:48,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:28:48,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 06:28:48,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:28:48,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997015970] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 06:28:48,678 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 06:28:48,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2023-02-17 06:28:48,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188680055] [2023-02-17 06:28:48,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 06:28:48,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-17 06:28:48,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:28:48,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-17 06:28:48,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-02-17 06:28:48,683 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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) [2023-02-17 06:28:48,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:28:48,748 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2023-02-17 06:28:48,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 06:28:48,749 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-17 06:28:48,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:28:48,750 INFO L225 Difference]: With dead ends: 11 [2023-02-17 06:28:48,750 INFO L226 Difference]: Without dead ends: 0 [2023-02-17 06:28:48,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-02-17 06:28:48,755 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 5 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 06:28:48,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 7 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 06:28:48,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-17 06:28:48,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-17 06:28:48,758 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) [2023-02-17 06:28:48,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-17 06:28:48,758 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2023-02-17 06:28:48,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:28:48,759 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-17 06:28:48,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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) [2023-02-17 06:28:48,759 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-17 06:28:48,760 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-17 06:28:48,762 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-17 06:28:48,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 06:28:48,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:28:48,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-17 06:28:48,973 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-17 06:28:48,974 INFO L895 garLoopResultBuilder]: At program point L17-2(lines 17 19) the Hoare annotation is: (let ((.cse9 (div |ULTIMATE.start_main_~x~0#1| 2))) (let ((.cse19 (* (- 2) .cse9))) (let ((.cse13 (div (+ .cse19 |ULTIMATE.start_main_~x~0#1|) 4294967296)) (.cse18 (+ |ULTIMATE.start_main_~x~0#1| .cse19)) (.cse12 (div (+ .cse19 |ULTIMATE.start_main_~x~0#1| (- 2)) 4294967296))) (let ((.cse5 (+ (+ |ULTIMATE.start_main_~x~0#1| .cse19 (- 2)) (* (- 4294967296) .cse12))) (.cse14 (= 0 .cse18)) (.cse15 (<= (+ (* (- 1) |ULTIMATE.start_main_~x~0#1|) (* 4294967296 (div |ULTIMATE.start_main_~x~0#1| 4294967296))) 0)) (.cse1 (+ .cse18 (* (- 4294967296) .cse13)))) (let ((.cse17 (= 0 .cse1)) (.cse2 (or .cse14 .cse15)) (.cse3 (not .cse14)) (.cse4 (not .cse15)) (.cse16 (= 0 .cse5))) (let ((.cse6 (and .cse3 .cse4 (not .cse16))) (.cse7 (and (not .cse17) .cse2)) (.cse8 (and (or .cse14 .cse15 .cse16) (or (and .cse3 .cse4) .cse17))) (.cse10 (and .cse2 (<= (+ .cse13 1) 0))) (.cse11 (and .cse3 .cse4 (<= (+ .cse12 1) 0)))) (or (and (< 0 (mod (mod |ULTIMATE.start_main_~N~0#1| 65536) 4294967296)) (= |ULTIMATE.start_main_~x~0#1| (+ 2 0))) (let ((.cse0 (<= .cse9 0))) (and (or (<= 0 (+ |ULTIMATE.start_main_~x~0#1| (- 2))) (not .cse0)) (or .cse0 (and (or (and (<= .cse1 0) .cse2) (and .cse3 .cse4 (<= .cse5 0)) (<= |ULTIMATE.start_main_~x~0#1| 2)) (or .cse6 .cse7 .cse8))))) .cse10 (and (= |ULTIMATE.start_main_~x~0#1| 0) (or .cse6 .cse7 .cse8 .cse10 .cse11)) .cse11))))))) [2023-02-17 06:28:48,974 INFO L899 garLoopResultBuilder]: For program point L17-3(lines 17 19) no Hoare annotation was computed. [2023-02-17 06:28:48,974 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 22) no Hoare annotation was computed. [2023-02-17 06:28:48,974 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-17 06:28:48,974 INFO L899 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2023-02-17 06:28:48,975 INFO L895 garLoopResultBuilder]: At program point L7-2(lines 6 11) the Hoare annotation is: (let ((.cse11 (not (= 0 |ULTIMATE.start___VERIFIER_assert_~cond#1|)))) (or (and (= |ULTIMATE.start_main_~x~0#1| 0) (let ((.cse10 (* (- 2) (div |ULTIMATE.start_main_~x~0#1| 2)))) (let ((.cse9 (+ |ULTIMATE.start_main_~x~0#1| .cse10))) (let ((.cse5 (= 0 .cse9)) (.cse6 (<= (+ (* (- 1) |ULTIMATE.start_main_~x~0#1|) (* 4294967296 (div |ULTIMATE.start_main_~x~0#1| 4294967296))) 0)) (.cse7 (div (+ .cse10 |ULTIMATE.start_main_~x~0#1|) 4294967296)) (.cse8 (div (+ .cse10 |ULTIMATE.start_main_~x~0#1| (- 2)) 4294967296))) (let ((.cse2 (= 0 (+ (+ |ULTIMATE.start_main_~x~0#1| .cse10 (- 2)) (* (- 4294967296) .cse8)))) (.cse3 (= 0 (+ .cse9 (* (- 4294967296) .cse7)))) (.cse4 (or .cse5 .cse6)) (.cse0 (not .cse5)) (.cse1 (not .cse6))) (or (and .cse0 .cse1 (not .cse2)) (and (not .cse3) .cse4) (and (or .cse5 .cse6 .cse2) (or (and .cse0 .cse1) .cse3)) (and .cse4 (<= (+ .cse7 1) 0)) (and .cse0 .cse1 (<= (+ .cse8 1) 0))))))) .cse11) .cse11)) [2023-02-17 06:28:48,975 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-17 06:28:48,975 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-17 06:28:48,975 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2023-02-17 06:28:48,975 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2023-02-17 06:28:48,977 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-02-17 06:28:48,978 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-17 06:28:48,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.02 06:28:48 BoogieIcfgContainer [2023-02-17 06:28:48,993 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-17 06:28:48,994 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-17 06:28:48,994 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-17 06:28:48,994 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-17 06:28:48,994 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 06:28:47" (3/4) ... [2023-02-17 06:28:48,996 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-17 06:28:49,002 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-02-17 06:28:49,002 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-17 06:28:49,002 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-17 06:28:49,002 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-17 06:28:49,022 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-17 06:28:49,022 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-17 06:28:49,022 INFO L158 Benchmark]: Toolchain (without parser) took 1975.80ms. Allocated memory was 142.6MB in the beginning and 184.5MB in the end (delta: 41.9MB). Free memory was 107.2MB in the beginning and 79.8MB in the end (delta: 27.4MB). Peak memory consumption was 70.4MB. Max. memory is 16.1GB. [2023-02-17 06:28:49,023 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 117.4MB. Free memory is still 89.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 06:28:49,023 INFO L158 Benchmark]: CACSL2BoogieTranslator took 177.18ms. Allocated memory is still 142.6MB. Free memory was 106.8MB in the beginning and 97.2MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-17 06:28:49,023 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.08ms. Allocated memory is still 142.6MB. Free memory was 96.7MB in the beginning and 95.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 06:28:49,023 INFO L158 Benchmark]: Boogie Preprocessor took 15.43ms. Allocated memory is still 142.6MB. Free memory was 95.5MB in the beginning and 94.6MB in the end (delta: 820.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 06:28:49,024 INFO L158 Benchmark]: RCFGBuilder took 243.08ms. Allocated memory is still 142.6MB. Free memory was 94.6MB in the beginning and 111.8MB in the end (delta: -17.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-17 06:28:49,024 INFO L158 Benchmark]: TraceAbstraction took 1484.63ms. Allocated memory was 142.6MB in the beginning and 184.5MB in the end (delta: 41.9MB). Free memory was 111.1MB in the beginning and 81.9MB in the end (delta: 29.2MB). Peak memory consumption was 72.9MB. Max. memory is 16.1GB. [2023-02-17 06:28:49,024 INFO L158 Benchmark]: Witness Printer took 28.12ms. Allocated memory is still 184.5MB. Free memory was 81.9MB in the beginning and 79.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 06:28:49,026 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 117.4MB. Free memory is still 89.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 177.18ms. Allocated memory is still 142.6MB. Free memory was 106.8MB in the beginning and 97.2MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.08ms. Allocated memory is still 142.6MB. Free memory was 96.7MB in the beginning and 95.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.43ms. Allocated memory is still 142.6MB. Free memory was 95.5MB in the beginning and 94.6MB in the end (delta: 820.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 243.08ms. Allocated memory is still 142.6MB. Free memory was 94.6MB in the beginning and 111.8MB in the end (delta: -17.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1484.63ms. Allocated memory was 142.6MB in the beginning and 184.5MB in the end (delta: 41.9MB). Free memory was 111.1MB in the beginning and 81.9MB in the end (delta: 29.2MB). Peak memory consumption was 72.9MB. Max. memory is 16.1GB. * Witness Printer took 28.12ms. Allocated memory is still 184.5MB. Free memory was 81.9MB in the beginning and 79.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 8]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 31 IncrementalHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 9 mSDtfsCounter, 31 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 906 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 2 QuantifiedInterpolants, 1981 SizeOfPredicates, 5 NumberOfNonLiveVariables, 38 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((0 < N % 65536 % 4294967296 && x == 2 + 0) || ((0 <= x + -2 || !(x / 2 <= 0)) && (x / 2 <= 0 || ((((x + -2 * (x / 2) + -4294967296 * ((-2 * (x / 2) + x) / 4294967296) <= 0 && (0 == x + -2 * (x / 2) || -1 * x + 4294967296 * (x / 4294967296) <= 0)) || ((!(0 == x + -2 * (x / 2)) && !(-1 * x + 4294967296 * (x / 4294967296) <= 0)) && x + -2 * (x / 2) + -2 + -4294967296 * ((-2 * (x / 2) + x + -2) / 4294967296) <= 0)) || x <= 2) && ((((!(0 == x + -2 * (x / 2)) && !(-1 * x + 4294967296 * (x / 4294967296) <= 0)) && !(0 == x + -2 * (x / 2) + -2 + -4294967296 * ((-2 * (x / 2) + x + -2) / 4294967296))) || (!(0 == x + -2 * (x / 2) + -4294967296 * ((-2 * (x / 2) + x) / 4294967296)) && (0 == x + -2 * (x / 2) || -1 * x + 4294967296 * (x / 4294967296) <= 0))) || (((0 == x + -2 * (x / 2) || -1 * x + 4294967296 * (x / 4294967296) <= 0) || 0 == x + -2 * (x / 2) + -2 + -4294967296 * ((-2 * (x / 2) + x + -2) / 4294967296)) && ((!(0 == x + -2 * (x / 2)) && !(-1 * x + 4294967296 * (x / 4294967296) <= 0)) || 0 == x + -2 * (x / 2) + -4294967296 * ((-2 * (x / 2) + x) / 4294967296)))))))) || ((0 == x + -2 * (x / 2) || -1 * x + 4294967296 * (x / 4294967296) <= 0) && (-2 * (x / 2) + x) / 4294967296 + 1 <= 0)) || (x == 0 && ((((((!(0 == x + -2 * (x / 2)) && !(-1 * x + 4294967296 * (x / 4294967296) <= 0)) && !(0 == x + -2 * (x / 2) + -2 + -4294967296 * ((-2 * (x / 2) + x + -2) / 4294967296))) || (!(0 == x + -2 * (x / 2) + -4294967296 * ((-2 * (x / 2) + x) / 4294967296)) && (0 == x + -2 * (x / 2) || -1 * x + 4294967296 * (x / 4294967296) <= 0))) || (((0 == x + -2 * (x / 2) || -1 * x + 4294967296 * (x / 4294967296) <= 0) || 0 == x + -2 * (x / 2) + -2 + -4294967296 * ((-2 * (x / 2) + x + -2) / 4294967296)) && ((!(0 == x + -2 * (x / 2)) && !(-1 * x + 4294967296 * (x / 4294967296) <= 0)) || 0 == x + -2 * (x / 2) + -4294967296 * ((-2 * (x / 2) + x) / 4294967296)))) || ((0 == x + -2 * (x / 2) || -1 * x + 4294967296 * (x / 4294967296) <= 0) && (-2 * (x / 2) + x) / 4294967296 + 1 <= 0)) || ((!(0 == x + -2 * (x / 2)) && !(-1 * x + 4294967296 * (x / 4294967296) <= 0)) && (-2 * (x / 2) + x + -2) / 4294967296 + 1 <= 0)))) || ((!(0 == x + -2 * (x / 2)) && !(-1 * x + 4294967296 * (x / 4294967296) <= 0)) && (-2 * (x / 2) + x + -2) / 4294967296 + 1 <= 0) - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: ((x == 0 && ((((((!(0 == x + -2 * (x / 2)) && !(-1 * x + 4294967296 * (x / 4294967296) <= 0)) && !(0 == x + -2 * (x / 2) + -2 + -4294967296 * ((-2 * (x / 2) + x + -2) / 4294967296))) || (!(0 == x + -2 * (x / 2) + -4294967296 * ((-2 * (x / 2) + x) / 4294967296)) && (0 == x + -2 * (x / 2) || -1 * x + 4294967296 * (x / 4294967296) <= 0))) || (((0 == x + -2 * (x / 2) || -1 * x + 4294967296 * (x / 4294967296) <= 0) || 0 == x + -2 * (x / 2) + -2 + -4294967296 * ((-2 * (x / 2) + x + -2) / 4294967296)) && ((!(0 == x + -2 * (x / 2)) && !(-1 * x + 4294967296 * (x / 4294967296) <= 0)) || 0 == x + -2 * (x / 2) + -4294967296 * ((-2 * (x / 2) + x) / 4294967296)))) || ((0 == x + -2 * (x / 2) || -1 * x + 4294967296 * (x / 4294967296) <= 0) && (-2 * (x / 2) + x) / 4294967296 + 1 <= 0)) || ((!(0 == x + -2 * (x / 2)) && !(-1 * x + 4294967296 * (x / 4294967296) <= 0)) && (-2 * (x / 2) + x + -2) / 4294967296 + 1 <= 0))) && !(0 == cond)) || !(0 == cond) RESULT: Ultimate proved your program to be correct! [2023-02-17 06:28:49,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE