./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-lit/bhmr2007.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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-lit/bhmr2007.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 07cb9038cdaf0e413365ff784390031a7ba733892c02a00ed18b47b0bbaf3c4d --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 15:38:13,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 15:38:13,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 15:38:13,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 15:38:13,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 15:38:13,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 15:38:13,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 15:38:13,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 15:38:13,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 15:38:13,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 15:38:13,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 15:38:13,685 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 15:38:13,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 15:38:13,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 15:38:13,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 15:38:13,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 15:38:13,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 15:38:13,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 15:38:13,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 15:38:13,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 15:38:13,692 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 15:38:13,693 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 15:38:13,694 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 15:38:13,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 15:38:13,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 15:38:13,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 15:38:13,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 15:38:13,698 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 15:38:13,698 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 15:38:13,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 15:38:13,699 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 15:38:13,699 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 15:38:13,700 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 15:38:13,700 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 15:38:13,701 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 15:38:13,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 15:38:13,702 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 15:38:13,702 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 15:38:13,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 15:38:13,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 15:38:13,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 15:38:13,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 15:38:13,704 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 15:38:13,718 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 15:38:13,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 15:38:13,718 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 15:38:13,719 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 15:38:13,719 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 15:38:13,719 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 15:38:13,720 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 15:38:13,720 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 15:38:13,720 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 15:38:13,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 15:38:13,720 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 15:38:13,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 15:38:13,721 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 15:38:13,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 15:38:13,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 15:38:13,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 15:38:13,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 15:38:13,721 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 15:38:13,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 15:38:13,722 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 15:38:13,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 15:38:13,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 15:38:13,722 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 15:38:13,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 15:38:13,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 15:38:13,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 15:38:13,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 15:38:13,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 15:38:13,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 15:38:13,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 15:38:13,724 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 15:38:13,724 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 15:38:13,724 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 15:38:13,724 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 07cb9038cdaf0e413365ff784390031a7ba733892c02a00ed18b47b0bbaf3c4d [2022-07-13 15:38:13,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 15:38:13,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 15:38:13,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 15:38:13,883 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 15:38:13,884 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 15:38:13,885 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/bhmr2007.i [2022-07-13 15:38:13,921 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9ecc68ca/b0ab849a6b124bd897d6ef766b976011/FLAG0d46d27b5 [2022-07-13 15:38:14,291 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 15:38:14,291 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/bhmr2007.i [2022-07-13 15:38:14,296 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9ecc68ca/b0ab849a6b124bd897d6ef766b976011/FLAG0d46d27b5 [2022-07-13 15:38:14,714 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9ecc68ca/b0ab849a6b124bd897d6ef766b976011 [2022-07-13 15:38:14,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 15:38:14,718 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 15:38:14,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 15:38:14,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 15:38:14,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 15:38:14,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 03:38:14" (1/1) ... [2022-07-13 15:38:14,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4216c7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:38:14, skipping insertion in model container [2022-07-13 15:38:14,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 03:38:14" (1/1) ... [2022-07-13 15:38:14,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 15:38:14,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 15:38:14,860 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/bhmr2007.i[895,908] [2022-07-13 15:38:14,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 15:38:14,872 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 15:38:14,880 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/bhmr2007.i[895,908] [2022-07-13 15:38:14,883 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 15:38:14,891 INFO L208 MainTranslator]: Completed translation [2022-07-13 15:38:14,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:38:14 WrapperNode [2022-07-13 15:38:14,891 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 15:38:14,892 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 15:38:14,892 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 15:38:14,892 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 15:38:14,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:38:14" (1/1) ... [2022-07-13 15:38:14,901 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:38:14" (1/1) ... [2022-07-13 15:38:14,911 INFO L137 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2022-07-13 15:38:14,912 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 15:38:14,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 15:38:14,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 15:38:14,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 15:38:14,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:38:14" (1/1) ... [2022-07-13 15:38:14,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:38:14" (1/1) ... [2022-07-13 15:38:14,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:38:14" (1/1) ... [2022-07-13 15:38:14,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:38:14" (1/1) ... [2022-07-13 15:38:14,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:38:14" (1/1) ... [2022-07-13 15:38:14,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:38:14" (1/1) ... [2022-07-13 15:38:14,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:38:14" (1/1) ... [2022-07-13 15:38:14,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 15:38:14,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 15:38:14,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 15:38:14,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 15:38:14,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:38:14" (1/1) ... [2022-07-13 15:38:14,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 15:38:14,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 15:38:14,981 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 15:38:15,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 15:38:15,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 15:38:15,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 15:38:15,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 15:38:15,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 15:38:15,084 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 15:38:15,085 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 15:38:15,201 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 15:38:15,205 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 15:38:15,219 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 15:38:15,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:38:15 BoogieIcfgContainer [2022-07-13 15:38:15,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 15:38:15,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 15:38:15,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 15:38:15,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 15:38:15,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 03:38:14" (1/3) ... [2022-07-13 15:38:15,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab4c4f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 03:38:15, skipping insertion in model container [2022-07-13 15:38:15,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:38:14" (2/3) ... [2022-07-13 15:38:15,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab4c4f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 03:38:15, skipping insertion in model container [2022-07-13 15:38:15,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:38:15" (3/3) ... [2022-07-13 15:38:15,226 INFO L111 eAbstractionObserver]: Analyzing ICFG bhmr2007.i [2022-07-13 15:38:15,235 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 15:38:15,239 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 15:38:15,268 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 15:38:15,272 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@e4a4720, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4215d386 [2022-07-13 15:38:15,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 15:38:15,275 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 15:38:15,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-13 15:38:15,280 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 15:38:15,280 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-13 15:38:15,280 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 15:38:15,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 15:38:15,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1807304968, now seen corresponding path program 1 times [2022-07-13 15:38:15,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 15:38:15,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912282851] [2022-07-13 15:38:15,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 15:38:15,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 15:38:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 15:38:15,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 15:38:15,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 15:38:15,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912282851] [2022-07-13 15:38:15,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912282851] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 15:38:15,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 15:38:15,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 15:38:15,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198146117] [2022-07-13 15:38:15,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 15:38:15,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 15:38:15,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 15:38:15,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 15:38:15,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 15:38:15,408 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 15:38:15,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 15:38:15,416 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2022-07-13 15:38:15,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 15:38:15,421 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-13 15:38:15,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 15:38:15,425 INFO L225 Difference]: With dead ends: 22 [2022-07-13 15:38:15,425 INFO L226 Difference]: Without dead ends: 10 [2022-07-13 15:38:15,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 15:38:15,436 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 15:38:15,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 15:38:15,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-07-13 15:38:15,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-07-13 15:38:15,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 15:38:15,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2022-07-13 15:38:15,461 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7 [2022-07-13 15:38:15,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 15:38:15,461 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2022-07-13 15:38:15,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 15:38:15,461 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2022-07-13 15:38:15,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-13 15:38:15,462 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 15:38:15,462 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-13 15:38:15,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 15:38:15,463 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 15:38:15,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 15:38:15,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1806977267, now seen corresponding path program 1 times [2022-07-13 15:38:15,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 15:38:15,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129672692] [2022-07-13 15:38:15,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 15:38:15,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 15:38:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 15:38:15,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 15:38:15,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 15:38:15,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129672692] [2022-07-13 15:38:15,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129672692] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 15:38:15,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 15:38:15,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 15:38:15,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198153712] [2022-07-13 15:38:15,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 15:38:15,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 15:38:15,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 15:38:15,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 15:38:15,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 15:38:15,580 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 15:38:15,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 15:38:15,625 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2022-07-13 15:38:15,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 15:38:15,625 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-13 15:38:15,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 15:38:15,627 INFO L225 Difference]: With dead ends: 16 [2022-07-13 15:38:15,627 INFO L226 Difference]: Without dead ends: 12 [2022-07-13 15:38:15,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 15:38:15,628 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 5 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 15:38:15,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 21 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 15:38:15,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-07-13 15:38:15,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2022-07-13 15:38:15,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 15:38:15,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2022-07-13 15:38:15,631 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 7 [2022-07-13 15:38:15,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 15:38:15,632 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2022-07-13 15:38:15,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 15:38:15,632 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-07-13 15:38:15,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-13 15:38:15,633 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 15:38:15,633 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 15:38:15,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 15:38:15,633 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 15:38:15,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 15:38:15,634 INFO L85 PathProgramCache]: Analyzing trace with hash 78673311, now seen corresponding path program 1 times [2022-07-13 15:38:15,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 15:38:15,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328237752] [2022-07-13 15:38:15,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 15:38:15,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 15:38:15,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 15:38:15,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 15:38:15,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 15:38:15,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328237752] [2022-07-13 15:38:15,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328237752] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 15:38:15,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360267119] [2022-07-13 15:38:15,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 15:38:15,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 15:38:15,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 15:38:15,811 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) [2022-07-13 15:38:15,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 15:38:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 15:38:15,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-13 15:38:15,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 15:38:16,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 15:38:16,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 15:38:16,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 15:38:16,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360267119] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 15:38:16,202 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 15:38:16,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-07-13 15:38:16,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35112067] [2022-07-13 15:38:16,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 15:38:16,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-13 15:38:16,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 15:38:16,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-13 15:38:16,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-07-13 15:38:16,208 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 16 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 15:38:16,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 15:38:16,430 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2022-07-13 15:38:16,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 15:38:16,431 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-13 15:38:16,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 15:38:16,431 INFO L225 Difference]: With dead ends: 26 [2022-07-13 15:38:16,431 INFO L226 Difference]: Without dead ends: 20 [2022-07-13 15:38:16,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2022-07-13 15:38:16,432 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 21 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 15:38:16,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 28 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 15:38:16,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-07-13 15:38:16,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2022-07-13 15:38:16,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 15:38:16,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-07-13 15:38:16,436 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 10 [2022-07-13 15:38:16,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 15:38:16,436 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-07-13 15:38:16,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 15:38:16,437 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-07-13 15:38:16,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-13 15:38:16,437 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 15:38:16,437 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 15:38:16,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 15:38:16,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 15:38:16,654 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 15:38:16,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 15:38:16,655 INFO L85 PathProgramCache]: Analyzing trace with hash 923522933, now seen corresponding path program 1 times [2022-07-13 15:38:16,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 15:38:16,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814456123] [2022-07-13 15:38:16,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 15:38:16,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 15:38:16,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 15:38:16,763 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 15:38:16,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 15:38:16,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814456123] [2022-07-13 15:38:16,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814456123] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 15:38:16,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514574924] [2022-07-13 15:38:16,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 15:38:16,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 15:38:16,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 15:38:16,769 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 15:38:16,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 15:38:16,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-13 15:38:16,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 15:38:16,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 15:38:16,975 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 15:38:16,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 15:38:17,101 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 15:38:17,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514574924] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 15:38:17,101 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 15:38:17,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 21 [2022-07-13 15:38:17,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563149726] [2022-07-13 15:38:17,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 15:38:17,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-13 15:38:17,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 15:38:17,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-13 15:38:17,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-07-13 15:38:17,107 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 15:38:17,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 15:38:17,463 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2022-07-13 15:38:17,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-13 15:38:17,463 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 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 13 [2022-07-13 15:38:17,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 15:38:17,463 INFO L225 Difference]: With dead ends: 25 [2022-07-13 15:38:17,463 INFO L226 Difference]: Without dead ends: 0 [2022-07-13 15:38:17,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=214, Invalid=976, Unknown=0, NotChecked=0, Total=1190 [2022-07-13 15:38:17,466 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 17 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 15:38:17,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 18 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 15:38:17,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-13 15:38:17,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-13 15:38:17,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 15:38:17,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-13 15:38:17,469 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2022-07-13 15:38:17,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 15:38:17,469 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 15:38:17,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 15:38:17,469 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-13 15:38:17,469 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-13 15:38:17,472 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 15:38:17,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 15:38:17,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-13 15:38:17,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-13 15:38:17,747 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-13 15:38:17,747 INFO L899 garLoopResultBuilder]: For program point L29(lines 29 35) no Hoare annotation was computed. [2022-07-13 15:38:17,748 INFO L899 garLoopResultBuilder]: For program point L27(line 27) no Hoare annotation was computed. [2022-07-13 15:38:17,748 INFO L899 garLoopResultBuilder]: For program point L29-2(lines 29 35) no Hoare annotation was computed. [2022-07-13 15:38:17,748 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2022-07-13 15:38:17,748 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-13 15:38:17,748 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-13 15:38:17,748 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-13 15:38:17,748 INFO L895 garLoopResultBuilder]: At program point L28-2(lines 28 37) the Hoare annotation is: (let ((.cse0 (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (.cse1 (* 3 |ULTIMATE.start_main_~i~0#1|))) (and (< .cse0 (+ (* 3 |ULTIMATE.start_main_~n~0#1|) 1)) (<= .cse1 .cse0) (<= .cse0 .cse1))) [2022-07-13 15:38:17,748 INFO L899 garLoopResultBuilder]: For program point L28-3(lines 28 37) no Hoare annotation was computed. [2022-07-13 15:38:17,749 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2022-07-13 15:38:17,751 INFO L899 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2022-07-13 15:38:17,751 INFO L902 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2022-07-13 15:38:17,751 INFO L902 garLoopResultBuilder]: At program point L39(lines 24 40) the Hoare annotation is: true [2022-07-13 15:38:17,753 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-07-13 15:38:17,754 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 15:38:17,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 03:38:17 BoogieIcfgContainer [2022-07-13 15:38:17,775 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 15:38:17,777 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 15:38:17,777 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 15:38:17,781 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 15:38:17,781 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:38:15" (3/4) ... [2022-07-13 15:38:17,783 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-13 15:38:17,789 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-07-13 15:38:17,789 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-13 15:38:17,790 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-13 15:38:17,790 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-13 15:38:17,813 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 15:38:17,813 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 15:38:17,815 INFO L158 Benchmark]: Toolchain (without parser) took 3095.55ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 66.3MB in the beginning and 92.2MB in the end (delta: -25.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 15:38:17,815 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 96.5MB. Free memory is still 51.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 15:38:17,815 INFO L158 Benchmark]: CACSL2BoogieTranslator took 170.41ms. Allocated memory is still 96.5MB. Free memory was 66.1MB in the beginning and 73.2MB in the end (delta: -7.1MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2022-07-13 15:38:17,816 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.49ms. Allocated memory is still 96.5MB. Free memory was 73.2MB in the beginning and 71.9MB in the end (delta: 1.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-13 15:38:17,816 INFO L158 Benchmark]: Boogie Preprocessor took 11.12ms. Allocated memory is still 96.5MB. Free memory was 71.5MB in the beginning and 70.8MB in the end (delta: 703.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 15:38:17,817 INFO L158 Benchmark]: RCFGBuilder took 297.37ms. Allocated memory is still 96.5MB. Free memory was 70.8MB in the beginning and 61.8MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-13 15:38:17,817 INFO L158 Benchmark]: TraceAbstraction took 2552.78ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 61.5MB in the beginning and 94.2MB in the end (delta: -32.8MB). Peak memory consumption was 42.3MB. Max. memory is 16.1GB. [2022-07-13 15:38:17,817 INFO L158 Benchmark]: Witness Printer took 36.26ms. Allocated memory is still 117.4MB. Free memory was 94.2MB in the beginning and 92.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 15:38:17,819 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 96.5MB. Free memory is still 51.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 170.41ms. Allocated memory is still 96.5MB. Free memory was 66.1MB in the beginning and 73.2MB in the end (delta: -7.1MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.49ms. Allocated memory is still 96.5MB. Free memory was 73.2MB in the beginning and 71.9MB in the end (delta: 1.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.12ms. Allocated memory is still 96.5MB. Free memory was 71.5MB in the beginning and 70.8MB in the end (delta: 703.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 297.37ms. Allocated memory is still 96.5MB. Free memory was 70.8MB in the beginning and 61.8MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2552.78ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 61.5MB in the beginning and 94.2MB in the end (delta: -32.8MB). Peak memory consumption was 42.3MB. Max. memory is 16.1GB. * Witness Printer took 36.26ms. Allocated memory is still 117.4MB. Free memory was 94.2MB in the beginning and 92.2MB 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: 19]: 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, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.5s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 43 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 43 mSDsluCounter, 83 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 53 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 279 IncrementalHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 30 mSDtfsCounter, 279 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 25 SyntacticMatches, 6 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=3, InterpolantAutomatonStates: 43, 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, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 10 NumberOfFragments, 26 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 232 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 825 SizeOfPredicates, 12 NumberOfNonLiveVariables, 109 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 1/18 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: 1 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (a + b < 3 * n + 1 && 3 * i <= a + b) && a + b <= 3 * i - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-13 15:38:17,859 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