./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 [2023-02-18 15:27:31,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 15:27:31,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 15:27:31,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 15:27:31,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 15:27:31,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 15:27:31,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 15:27:31,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 15:27:31,073 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 15:27:31,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 15:27:31,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 15:27:31,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 15:27:31,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 15:27:31,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 15:27:31,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 15:27:31,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 15:27:31,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 15:27:31,086 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 15:27:31,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 15:27:31,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 15:27:31,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 15:27:31,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 15:27:31,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 15:27:31,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 15:27:31,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 15:27:31,100 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 15:27:31,101 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 15:27:31,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 15:27:31,103 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 15:27:31,104 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 15:27:31,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 15:27:31,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 15:27:31,106 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 15:27:31,106 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 15:27:31,107 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 15:27:31,107 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 15:27:31,108 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 15:27:31,108 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 15:27:31,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 15:27:31,109 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 15:27:31,110 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 15:27:31,110 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 15:27:31,139 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 15:27:31,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 15:27:31,140 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 15:27:31,140 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 15:27:31,141 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 15:27:31,141 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 15:27:31,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 15:27:31,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 15:27:31,142 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 15:27:31,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 15:27:31,143 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 15:27:31,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 15:27:31,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 15:27:31,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 15:27:31,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 15:27:31,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 15:27:31,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 15:27:31,144 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 15:27:31,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 15:27:31,145 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 15:27:31,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 15:27:31,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 15:27:31,145 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 15:27:31,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 15:27:31,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 15:27:31,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 15:27:31,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 15:27:31,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 15:27:31,146 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 15:27:31,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 15:27:31,147 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 15:27:31,147 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 15:27:31,147 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 15:27:31,147 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 15:27:31,148 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 15:27:31,148 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b9c8396c2cadaebd0d1bf5efb2e2e779b8a2240a5737f65c06e64ea585aef3c [2023-02-18 15:27:31,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 15:27:31,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 15:27:31,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 15:27:31,356 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 15:27:31,356 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 15:27:31,357 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/simple_3-2.c [2023-02-18 15:27:32,499 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 15:27:32,655 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 15:27:32,656 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/simple_3-2.c [2023-02-18 15:27:32,660 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20e22e71f/73014c9d4e264df5a259f349be3d23bf/FLAG0df6ae7a5 [2023-02-18 15:27:32,710 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20e22e71f/73014c9d4e264df5a259f349be3d23bf [2023-02-18 15:27:32,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 15:27:32,714 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 15:27:32,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 15:27:32,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 15:27:32,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 15:27:32,720 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 03:27:32" (1/1) ... [2023-02-18 15:27:32,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2659225b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:27:32, skipping insertion in model container [2023-02-18 15:27:32,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 03:27:32" (1/1) ... [2023-02-18 15:27:32,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 15:27:32,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 15:27:32,863 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] [2023-02-18 15:27:32,871 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 15:27:32,877 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 15:27:32,885 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] [2023-02-18 15:27:32,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 15:27:32,895 INFO L208 MainTranslator]: Completed translation [2023-02-18 15:27:32,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:27:32 WrapperNode [2023-02-18 15:27:32,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 15:27:32,896 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 15:27:32,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 15:27:32,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 15:27:32,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:27:32" (1/1) ... [2023-02-18 15:27:32,906 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:27:32" (1/1) ... [2023-02-18 15:27:32,919 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 25 [2023-02-18 15:27:32,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 15:27:32,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 15:27:32,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 15:27:32,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 15:27:32,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:27:32" (1/1) ... [2023-02-18 15:27:32,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:27:32" (1/1) ... [2023-02-18 15:27:32,927 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:27:32" (1/1) ... [2023-02-18 15:27:32,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:27:32" (1/1) ... [2023-02-18 15:27:32,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:27:32" (1/1) ... [2023-02-18 15:27:32,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:27:32" (1/1) ... [2023-02-18 15:27:32,932 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:27:32" (1/1) ... [2023-02-18 15:27:32,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:27:32" (1/1) ... [2023-02-18 15:27:32,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 15:27:32,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 15:27:32,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 15:27:32,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 15:27:32,935 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:27:32" (1/1) ... [2023-02-18 15:27:32,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 15:27:32,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 15:27:32,958 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) [2023-02-18 15:27:32,963 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 [2023-02-18 15:27:32,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 15:27:32,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 15:27:32,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 15:27:32,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 15:27:33,043 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 15:27:33,045 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 15:27:33,115 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 15:27:33,120 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 15:27:33,120 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-18 15:27:33,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 03:27:33 BoogieIcfgContainer [2023-02-18 15:27:33,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 15:27:33,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 15:27:33,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 15:27:33,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 15:27:33,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 03:27:32" (1/3) ... [2023-02-18 15:27:33,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6601576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 03:27:33, skipping insertion in model container [2023-02-18 15:27:33,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:27:32" (2/3) ... [2023-02-18 15:27:33,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6601576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 03:27:33, skipping insertion in model container [2023-02-18 15:27:33,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 03:27:33" (3/3) ... [2023-02-18 15:27:33,129 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_3-2.c [2023-02-18 15:27:33,144 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 15:27:33,144 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 15:27:33,182 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 15:27:33,187 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;@55bdc1fd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 15:27:33,188 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 15:27:33,191 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) [2023-02-18 15:27:33,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-18 15:27:33,196 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 15:27:33,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-18 15:27:33,197 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 15:27:33,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 15:27:33,201 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2023-02-18 15:27:33,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 15:27:33,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593096605] [2023-02-18 15:27:33,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:27:33,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 15:27:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:27:33,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:27:33,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 15:27:33,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593096605] [2023-02-18 15:27:33,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593096605] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 15:27:33,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 15:27:33,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 15:27:33,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065622358] [2023-02-18 15:27:33,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 15:27:33,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 15:27:33,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 15:27:33,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 15:27:33,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 15:27:33,707 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) [2023-02-18 15:27:33,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 15:27:33,753 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2023-02-18 15:27:33,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 15:27:33,755 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 [2023-02-18 15:27:33,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 15:27:33,787 INFO L225 Difference]: With dead ends: 26 [2023-02-18 15:27:33,787 INFO L226 Difference]: Without dead ends: 8 [2023-02-18 15:27:33,804 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 [2023-02-18 15:27:33,807 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 [2023-02-18 15:27:33,808 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] [2023-02-18 15:27:33,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-02-18 15:27:33,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-02-18 15:27:33,838 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) [2023-02-18 15:27:33,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-02-18 15:27:33,840 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2023-02-18 15:27:33,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 15:27:33,840 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-02-18 15:27:33,840 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) [2023-02-18 15:27:33,840 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-02-18 15:27:33,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-18 15:27:33,841 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 15:27:33,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-18 15:27:33,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 15:27:33,842 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 15:27:33,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 15:27:33,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2023-02-18 15:27:33,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 15:27:33,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723831175] [2023-02-18 15:27:33,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:27:33,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 15:27:33,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:27:34,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:27:34,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 15:27:34,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723831175] [2023-02-18 15:27:34,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723831175] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 15:27:34,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614426753] [2023-02-18 15:27:34,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:27:34,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:27:34,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 15:27:34,021 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) [2023-02-18 15:27:34,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 15:27:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:27:34,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-18 15:27:34,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 15:27:34,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:27:34,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 15:27:34,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:27:34,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614426753] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 15:27:34,534 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 15:27:34,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2023-02-18 15:27:34,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840509480] [2023-02-18 15:27:34,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 15:27:34,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-18 15:27:34,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 15:27:34,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-18 15:27:34,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-02-18 15:27:34,538 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) [2023-02-18 15:27:34,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 15:27:34,606 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2023-02-18 15:27:34,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 15:27:34,606 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 [2023-02-18 15:27:34,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 15:27:34,607 INFO L225 Difference]: With dead ends: 11 [2023-02-18 15:27:34,607 INFO L226 Difference]: Without dead ends: 0 [2023-02-18 15:27:34,608 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 [2023-02-18 15:27:34,609 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 [2023-02-18 15:27:34,609 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] [2023-02-18 15:27:34,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-18 15:27:34,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-18 15:27:34,611 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) [2023-02-18 15:27:34,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-18 15:27:34,611 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2023-02-18 15:27:34,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 15:27:34,611 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-18 15:27:34,611 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) [2023-02-18 15:27:34,612 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-18 15:27:34,612 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-18 15:27:34,614 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-18 15:27:34,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 15:27:34,820 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 [2023-02-18 15:27:34,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-18 15:27:34,827 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-18 15:27:34,829 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))))))) [2023-02-18 15:27:34,829 INFO L899 garLoopResultBuilder]: For program point L17-3(lines 17 19) no Hoare annotation was computed. [2023-02-18 15:27:34,829 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 22) no Hoare annotation was computed. [2023-02-18 15:27:34,829 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-18 15:27:34,830 INFO L899 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2023-02-18 15:27:34,831 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)) [2023-02-18 15:27:34,831 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-18 15:27:34,831 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-18 15:27:34,831 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2023-02-18 15:27:34,831 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2023-02-18 15:27:34,834 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-02-18 15:27:34,836 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-18 15:27:34,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 03:27:34 BoogieIcfgContainer [2023-02-18 15:27:34,870 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-18 15:27:34,871 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-18 15:27:34,871 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-18 15:27:34,871 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-18 15:27:34,872 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 03:27:33" (3/4) ... [2023-02-18 15:27:34,874 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-18 15:27:34,884 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-02-18 15:27:34,884 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-18 15:27:34,884 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-18 15:27:34,884 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-18 15:27:34,911 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-18 15:27:34,911 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-18 15:27:34,916 INFO L158 Benchmark]: Toolchain (without parser) took 2201.58ms. Allocated memory was 115.3MB in the beginning and 148.9MB in the end (delta: 33.6MB). Free memory was 90.4MB in the beginning and 73.1MB in the end (delta: 17.3MB). Peak memory consumption was 50.7MB. Max. memory is 16.1GB. [2023-02-18 15:27:34,916 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 94.4MB. Free memory was 47.6MB in the beginning and 47.5MB in the end (delta: 134.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 15:27:34,916 INFO L158 Benchmark]: CACSL2BoogieTranslator took 178.96ms. Allocated memory is still 115.3MB. Free memory was 90.1MB in the beginning and 80.5MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 15:27:34,917 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.00ms. Allocated memory is still 115.3MB. Free memory was 80.5MB in the beginning and 79.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 15:27:34,917 INFO L158 Benchmark]: Boogie Preprocessor took 14.25ms. Allocated memory is still 115.3MB. Free memory was 79.1MB in the beginning and 78.0MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 15:27:34,917 INFO L158 Benchmark]: RCFGBuilder took 187.71ms. Allocated memory is still 115.3MB. Free memory was 78.0MB in the beginning and 69.4MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-18 15:27:34,918 INFO L158 Benchmark]: TraceAbstraction took 1746.72ms. Allocated memory was 115.3MB in the beginning and 148.9MB in the end (delta: 33.6MB). Free memory was 68.7MB in the beginning and 75.3MB in the end (delta: -6.5MB). Peak memory consumption was 27.7MB. Max. memory is 16.1GB. [2023-02-18 15:27:34,919 INFO L158 Benchmark]: Witness Printer took 44.16ms. Allocated memory is still 148.9MB. Free memory was 75.3MB in the beginning and 73.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 15:27:34,921 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 94.4MB. Free memory was 47.6MB in the beginning and 47.5MB in the end (delta: 134.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 178.96ms. Allocated memory is still 115.3MB. Free memory was 90.1MB in the beginning and 80.5MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.00ms. Allocated memory is still 115.3MB. Free memory was 80.5MB in the beginning and 79.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 14.25ms. Allocated memory is still 115.3MB. Free memory was 79.1MB in the beginning and 78.0MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 187.71ms. Allocated memory is still 115.3MB. Free memory was 78.0MB in the beginning and 69.4MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1746.72ms. Allocated memory was 115.3MB in the beginning and 148.9MB in the end (delta: 33.6MB). Free memory was 68.7MB in the beginning and 75.3MB in the end (delta: -6.5MB). Peak memory consumption was 27.7MB. Max. memory is 16.1GB. * Witness Printer took 44.16ms. Allocated memory is still 148.9MB. Free memory was 75.3MB in the beginning and 73.1MB 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: 1.7s, 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, 0.1s 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, 0.9s 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! [2023-02-18 15:27:34,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE