./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/fo_test.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/ldv-regression/fo_test.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 311e8ee9583d2ef90ad7c5b34825dcb05dcd1a4fef3a842e7a9948bf014d4ce2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 03:18:57,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 03:18:57,592 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 03:18:57,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 03:18:57,623 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 03:18:57,624 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 03:18:57,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 03:18:57,629 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 03:18:57,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 03:18:57,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 03:18:57,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 03:18:57,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 03:18:57,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 03:18:57,642 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 03:18:57,643 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 03:18:57,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 03:18:57,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 03:18:57,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 03:18:57,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 03:18:57,657 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 03:18:57,659 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 03:18:57,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 03:18:57,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 03:18:57,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 03:18:57,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 03:18:57,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 03:18:57,666 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 03:18:57,667 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 03:18:57,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 03:18:57,669 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 03:18:57,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 03:18:57,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 03:18:57,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 03:18:57,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 03:18:57,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 03:18:57,674 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 03:18:57,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 03:18:57,674 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 03:18:57,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 03:18:57,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 03:18:57,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 03:18:57,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 03:18:57,679 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 03:18:57,709 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 03:18:57,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 03:18:57,710 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 03:18:57,710 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 03:18:57,710 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 03:18:57,711 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 03:18:57,711 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 03:18:57,711 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 03:18:57,712 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 03:18:57,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 03:18:57,713 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 03:18:57,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 03:18:57,713 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 03:18:57,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 03:18:57,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 03:18:57,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 03:18:57,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 03:18:57,714 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 03:18:57,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 03:18:57,714 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 03:18:57,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 03:18:57,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 03:18:57,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 03:18:57,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 03:18:57,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 03:18:57,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 03:18:57,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 03:18:57,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 03:18:57,718 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 03:18:57,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 03:18:57,718 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 03:18:57,719 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 03:18:57,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 03:18:57,719 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 311e8ee9583d2ef90ad7c5b34825dcb05dcd1a4fef3a842e7a9948bf014d4ce2 [2022-07-12 03:18:57,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 03:18:57,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 03:18:57,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 03:18:57,983 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 03:18:57,984 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 03:18:57,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/fo_test.i [2022-07-12 03:18:58,035 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/977dbc2f0/b81197732fb94bcf9b906b2fad8d5b91/FLAGffe8688c5 [2022-07-12 03:18:58,524 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 03:18:58,525 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/fo_test.i [2022-07-12 03:18:58,544 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/977dbc2f0/b81197732fb94bcf9b906b2fad8d5b91/FLAGffe8688c5 [2022-07-12 03:18:59,008 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/977dbc2f0/b81197732fb94bcf9b906b2fad8d5b91 [2022-07-12 03:18:59,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 03:18:59,013 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 03:18:59,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 03:18:59,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 03:18:59,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 03:18:59,020 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:18:59" (1/1) ... [2022-07-12 03:18:59,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79f3cbff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:18:59, skipping insertion in model container [2022-07-12 03:18:59,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:18:59" (1/1) ... [2022-07-12 03:18:59,029 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 03:18:59,082 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 03:18:59,471 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/ldv-regression/fo_test.i[40440,40453] [2022-07-12 03:18:59,484 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 03:18:59,493 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 03:18:59,529 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/ldv-regression/fo_test.i[40440,40453] [2022-07-12 03:18:59,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 03:18:59,570 INFO L208 MainTranslator]: Completed translation [2022-07-12 03:18:59,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:18:59 WrapperNode [2022-07-12 03:18:59,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 03:18:59,571 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 03:18:59,572 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 03:18:59,572 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 03:18:59,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:18:59" (1/1) ... [2022-07-12 03:18:59,595 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:18:59" (1/1) ... [2022-07-12 03:18:59,614 INFO L137 Inliner]: procedures = 229, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 56 [2022-07-12 03:18:59,614 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 03:18:59,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 03:18:59,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 03:18:59,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 03:18:59,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:18:59" (1/1) ... [2022-07-12 03:18:59,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:18:59" (1/1) ... [2022-07-12 03:18:59,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:18:59" (1/1) ... [2022-07-12 03:18:59,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:18:59" (1/1) ... [2022-07-12 03:18:59,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:18:59" (1/1) ... [2022-07-12 03:18:59,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:18:59" (1/1) ... [2022-07-12 03:18:59,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:18:59" (1/1) ... [2022-07-12 03:18:59,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 03:18:59,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 03:18:59,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 03:18:59,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 03:18:59,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:18:59" (1/1) ... [2022-07-12 03:18:59,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 03:18:59,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:18:59,692 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) [2022-07-12 03:18:59,694 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 [2022-07-12 03:18:59,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 03:18:59,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 03:18:59,721 INFO L130 BoogieDeclarations]: Found specification of procedure read [2022-07-12 03:18:59,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 03:18:59,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 03:18:59,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 03:18:59,961 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 03:18:59,962 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 03:19:00,042 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 03:19:00,047 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 03:19:00,048 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 03:19:00,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:19:00 BoogieIcfgContainer [2022-07-12 03:19:00,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 03:19:00,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 03:19:00,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 03:19:00,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 03:19:00,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 03:18:59" (1/3) ... [2022-07-12 03:19:00,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12015fa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 03:19:00, skipping insertion in model container [2022-07-12 03:19:00,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:18:59" (2/3) ... [2022-07-12 03:19:00,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12015fa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 03:19:00, skipping insertion in model container [2022-07-12 03:19:00,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:19:00" (3/3) ... [2022-07-12 03:19:00,063 INFO L111 eAbstractionObserver]: Analyzing ICFG fo_test.i [2022-07-12 03:19:00,076 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 03:19:00,077 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 03:19:00,119 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 03:19:00,125 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@6fb2ca24, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@42b9b49b [2022-07-12 03:19:00,125 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 03:19:00,132 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 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) [2022-07-12 03:19:00,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-12 03:19:00,143 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:19:00,143 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:19:00,144 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:19:00,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:19:00,151 INFO L85 PathProgramCache]: Analyzing trace with hash 88874922, now seen corresponding path program 1 times [2022-07-12 03:19:00,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:19:00,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974785876] [2022-07-12 03:19:00,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:19:00,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:19:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:19:00,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:19:00,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:19:00,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974785876] [2022-07-12 03:19:00,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974785876] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:19:00,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:19:00,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 03:19:00,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252746780] [2022-07-12 03:19:00,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:19:00,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 03:19:00,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:19:00,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 03:19:00,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 03:19:00,595 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:19:00,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:19:00,617 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2022-07-12 03:19:00,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 03:19:00,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-12 03:19:00,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:19:00,626 INFO L225 Difference]: With dead ends: 25 [2022-07-12 03:19:00,626 INFO L226 Difference]: Without dead ends: 9 [2022-07-12 03:19:00,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 03:19:00,632 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:19:00,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 19 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 03:19:00,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-07-12 03:19:00,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-07-12 03:19:00,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 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) [2022-07-12 03:19:00,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2022-07-12 03:19:00,658 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2022-07-12 03:19:00,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:19:00,658 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2022-07-12 03:19:00,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:19:00,659 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2022-07-12 03:19:00,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-12 03:19:00,660 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:19:00,660 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:19:00,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 03:19:00,661 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:19:00,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:19:00,661 INFO L85 PathProgramCache]: Analyzing trace with hash 90721964, now seen corresponding path program 1 times [2022-07-12 03:19:00,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:19:00,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351474847] [2022-07-12 03:19:00,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:19:00,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:19:00,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 03:19:00,710 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 03:19:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 03:19:00,756 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 03:19:00,756 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 03:19:00,758 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 03:19:00,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 03:19:00,766 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-12 03:19:00,769 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 03:19:00,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 03:19:00 BoogieIcfgContainer [2022-07-12 03:19:00,805 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 03:19:00,805 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 03:19:00,806 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 03:19:00,806 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 03:19:00,807 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:19:00" (3/4) ... [2022-07-12 03:19:00,810 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-12 03:19:00,810 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 03:19:00,811 INFO L158 Benchmark]: Toolchain (without parser) took 1797.45ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 62.6MB in the beginning and 51.5MB in the end (delta: 11.1MB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. [2022-07-12 03:19:00,812 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 86.0MB. Free memory was 61.2MB in the beginning and 61.1MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 03:19:00,816 INFO L158 Benchmark]: CACSL2BoogieTranslator took 556.80ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 62.3MB in the beginning and 62.7MB in the end (delta: -384.8kB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-07-12 03:19:00,817 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.08ms. Allocated memory is still 104.9MB. Free memory was 62.7MB in the beginning and 60.2MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-12 03:19:00,817 INFO L158 Benchmark]: Boogie Preprocessor took 31.55ms. Allocated memory is still 104.9MB. Free memory was 60.2MB in the beginning and 58.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 03:19:00,818 INFO L158 Benchmark]: RCFGBuilder took 402.21ms. Allocated memory is still 104.9MB. Free memory was 58.1MB in the beginning and 44.5MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-12 03:19:00,819 INFO L158 Benchmark]: TraceAbstraction took 753.85ms. Allocated memory is still 104.9MB. Free memory was 43.8MB in the beginning and 51.6MB in the end (delta: -7.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 03:19:00,820 INFO L158 Benchmark]: Witness Printer took 4.58ms. Allocated memory is still 104.9MB. Free memory was 51.6MB in the beginning and 51.5MB in the end (delta: 118.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 03:19:00,822 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 86.0MB. Free memory was 61.2MB in the beginning and 61.1MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 556.80ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 62.3MB in the beginning and 62.7MB in the end (delta: -384.8kB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.08ms. Allocated memory is still 104.9MB. Free memory was 62.7MB in the beginning and 60.2MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.55ms. Allocated memory is still 104.9MB. Free memory was 60.2MB in the beginning and 58.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 402.21ms. Allocated memory is still 104.9MB. Free memory was 58.1MB in the beginning and 44.5MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 753.85ms. Allocated memory is still 104.9MB. Free memory was 43.8MB in the beginning and 51.6MB in the end (delta: -7.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.58ms. Allocated memory is still 104.9MB. Free memory was 51.6MB in the beginning and 51.5MB in the end (delta: 118.6kB). There was no memory consumed. 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 - UnprovableResult [Line: 980]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 992. Possible FailurePath: [L987] int globalState = 0; VAL [globalState=0] [L992] CALL, EXPR l_open("unknown",00) [L1002] CALL, EXPR open(file,flags) [L985] return __VERIFIER_nondet_int(); [L1002] RET, EXPR open(file,flags) [L1002] int fd = open(file,flags); [L1003] COND FALSE !(fd>0) VAL [\old(flags)=0, fd=0, file={4:0}, file={4:0}, flags=0, globalState=0] [L1004] return fd; VAL [\old(flags)=0, \result=0, fd=0, file={4:0}, file={4:0}, flags=0, globalState=0] [L992] RET, EXPR l_open("unknown",00) [L992] int file = l_open("unknown",00); [L993] void* cbuf = (void*) malloc(sizeof(char)*100); [L994] CALL l_read(file,cbuf,99) [L998] (globalState == 1) ? (0) : __blast_assert () [L998] CALL __blast_assert () [L980] reach_error() VAL [globalState=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 13 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 13 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-12 03:19:00,863 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/ldv-regression/fo_test.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 311e8ee9583d2ef90ad7c5b34825dcb05dcd1a4fef3a842e7a9948bf014d4ce2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 03:19:02,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 03:19:02,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 03:19:02,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 03:19:02,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 03:19:02,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 03:19:02,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 03:19:02,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 03:19:02,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 03:19:02,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 03:19:02,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 03:19:02,901 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 03:19:02,901 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 03:19:02,903 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 03:19:02,905 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 03:19:02,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 03:19:02,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 03:19:02,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 03:19:02,914 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 03:19:02,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 03:19:02,922 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 03:19:02,923 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 03:19:02,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 03:19:02,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 03:19:02,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 03:19:02,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 03:19:02,930 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 03:19:02,930 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 03:19:02,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 03:19:02,931 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 03:19:02,932 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 03:19:02,932 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 03:19:02,933 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 03:19:02,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 03:19:02,935 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 03:19:02,936 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 03:19:02,936 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 03:19:02,937 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 03:19:02,937 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 03:19:02,937 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 03:19:02,938 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 03:19:02,939 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 03:19:02,940 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-12 03:19:02,976 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 03:19:02,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 03:19:02,977 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 03:19:02,978 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 03:19:02,978 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 03:19:02,978 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 03:19:02,979 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 03:19:02,979 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 03:19:02,980 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 03:19:02,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 03:19:02,981 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 03:19:02,992 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 03:19:02,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 03:19:02,992 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 03:19:02,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 03:19:02,993 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 03:19:02,993 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 03:19:02,993 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 03:19:02,993 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 03:19:02,994 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 03:19:02,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 03:19:02,994 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 03:19:02,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 03:19:02,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 03:19:02,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 03:19:02,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 03:19:02,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 03:19:02,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 03:19:02,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 03:19:02,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 03:19:02,996 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 03:19:02,996 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 03:19:02,996 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 03:19:02,997 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 03:19:02,997 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 03:19:02,997 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 03:19:02,997 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 311e8ee9583d2ef90ad7c5b34825dcb05dcd1a4fef3a842e7a9948bf014d4ce2 [2022-07-12 03:19:03,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 03:19:03,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 03:19:03,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 03:19:03,325 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 03:19:03,326 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 03:19:03,327 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/fo_test.i [2022-07-12 03:19:03,381 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2e436be3/b729eb8147b049888b141c6af97ce878/FLAG102305b0f [2022-07-12 03:19:03,874 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 03:19:03,874 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/fo_test.i [2022-07-12 03:19:03,891 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2e436be3/b729eb8147b049888b141c6af97ce878/FLAG102305b0f [2022-07-12 03:19:04,197 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2e436be3/b729eb8147b049888b141c6af97ce878 [2022-07-12 03:19:04,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 03:19:04,201 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 03:19:04,202 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 03:19:04,202 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 03:19:04,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 03:19:04,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:19:04" (1/1) ... [2022-07-12 03:19:04,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7711145e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:04, skipping insertion in model container [2022-07-12 03:19:04,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:19:04" (1/1) ... [2022-07-12 03:19:04,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 03:19:04,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 03:19:04,618 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/ldv-regression/fo_test.i[40440,40453] [2022-07-12 03:19:04,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 03:19:04,654 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 03:19:04,686 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/ldv-regression/fo_test.i[40440,40453] [2022-07-12 03:19:04,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 03:19:04,732 INFO L208 MainTranslator]: Completed translation [2022-07-12 03:19:04,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:04 WrapperNode [2022-07-12 03:19:04,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 03:19:04,733 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 03:19:04,733 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 03:19:04,734 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 03:19:04,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:04" (1/1) ... [2022-07-12 03:19:04,766 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:04" (1/1) ... [2022-07-12 03:19:04,798 INFO L137 Inliner]: procedures = 230, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 52 [2022-07-12 03:19:04,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 03:19:04,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 03:19:04,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 03:19:04,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 03:19:04,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:04" (1/1) ... [2022-07-12 03:19:04,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:04" (1/1) ... [2022-07-12 03:19:04,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:04" (1/1) ... [2022-07-12 03:19:04,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:04" (1/1) ... [2022-07-12 03:19:04,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:04" (1/1) ... [2022-07-12 03:19:04,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:04" (1/1) ... [2022-07-12 03:19:04,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:04" (1/1) ... [2022-07-12 03:19:04,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 03:19:04,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 03:19:04,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 03:19:04,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 03:19:04,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:04" (1/1) ... [2022-07-12 03:19:04,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 03:19:04,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:19:04,922 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) [2022-07-12 03:19:04,936 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 [2022-07-12 03:19:04,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-12 03:19:04,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 03:19:04,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 03:19:04,965 INFO L130 BoogieDeclarations]: Found specification of procedure read [2022-07-12 03:19:04,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 03:19:04,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 03:19:05,323 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 03:19:05,325 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 03:19:05,457 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 03:19:05,464 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 03:19:05,464 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 03:19:05,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:19:05 BoogieIcfgContainer [2022-07-12 03:19:05,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 03:19:05,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 03:19:05,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 03:19:05,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 03:19:05,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 03:19:04" (1/3) ... [2022-07-12 03:19:05,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64d2ed2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 03:19:05, skipping insertion in model container [2022-07-12 03:19:05,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:19:04" (2/3) ... [2022-07-12 03:19:05,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64d2ed2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 03:19:05, skipping insertion in model container [2022-07-12 03:19:05,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:19:05" (3/3) ... [2022-07-12 03:19:05,473 INFO L111 eAbstractionObserver]: Analyzing ICFG fo_test.i [2022-07-12 03:19:05,486 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 03:19:05,486 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 03:19:05,543 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 03:19:05,554 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@5126242b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@67a9087e [2022-07-12 03:19:05,555 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 03:19:05,560 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 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) [2022-07-12 03:19:05,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-12 03:19:05,565 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:19:05,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:19:05,567 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:19:05,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:19:05,572 INFO L85 PathProgramCache]: Analyzing trace with hash 88874922, now seen corresponding path program 1 times [2022-07-12 03:19:05,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 03:19:05,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587360271] [2022-07-12 03:19:05,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:19:05,587 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 03:19:05,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 03:19:05,590 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 03:19:05,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-12 03:19:05,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:19:05,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 03:19:05,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:19:05,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:19:05,779 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 03:19:05,780 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 03:19:05,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587360271] [2022-07-12 03:19:05,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1587360271] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:19:05,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:19:05,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 03:19:05,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743894523] [2022-07-12 03:19:05,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:19:05,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 03:19:05,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 03:19:05,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 03:19:05,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 03:19:05,821 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:19:05,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:19:05,846 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2022-07-12 03:19:05,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 03:19:05,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-12 03:19:05,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:19:05,854 INFO L225 Difference]: With dead ends: 25 [2022-07-12 03:19:05,854 INFO L226 Difference]: Without dead ends: 9 [2022-07-12 03:19:05,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 03:19:05,861 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:19:05,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 19 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 03:19:05,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-07-12 03:19:05,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-07-12 03:19:05,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 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) [2022-07-12 03:19:05,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2022-07-12 03:19:05,890 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2022-07-12 03:19:05,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:19:05,890 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2022-07-12 03:19:05,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:19:05,890 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2022-07-12 03:19:05,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-12 03:19:05,891 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:19:05,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:19:05,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-12 03:19:06,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 03:19:06,100 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:19:06,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:19:06,100 INFO L85 PathProgramCache]: Analyzing trace with hash 90721964, now seen corresponding path program 1 times [2022-07-12 03:19:06,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 03:19:06,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2118343539] [2022-07-12 03:19:06,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:19:06,101 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 03:19:06,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 03:19:06,103 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 03:19:06,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-12 03:19:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 03:19:06,252 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 03:19:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 03:19:06,320 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-12 03:19:06,320 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 03:19:06,322 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 03:19:06,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-12 03:19:06,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 03:19:06,527 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-12 03:19:06,529 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 03:19:06,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 03:19:06 BoogieIcfgContainer [2022-07-12 03:19:06,550 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 03:19:06,550 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 03:19:06,550 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 03:19:06,550 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 03:19:06,551 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:19:05" (3/4) ... [2022-07-12 03:19:06,553 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-12 03:19:06,553 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 03:19:06,554 INFO L158 Benchmark]: Toolchain (without parser) took 2352.50ms. Allocated memory was 62.9MB in the beginning and 88.1MB in the end (delta: 25.2MB). Free memory was 41.7MB in the beginning and 47.9MB in the end (delta: -6.2MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. [2022-07-12 03:19:06,554 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 62.9MB. Free memory was 45.0MB in the beginning and 44.9MB in the end (delta: 51.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 03:19:06,554 INFO L158 Benchmark]: CACSL2BoogieTranslator took 530.71ms. Allocated memory is still 62.9MB. Free memory was 41.4MB in the beginning and 30.2MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-12 03:19:06,555 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.29ms. Allocated memory is still 62.9MB. Free memory was 30.2MB in the beginning and 27.6MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-12 03:19:06,555 INFO L158 Benchmark]: Boogie Preprocessor took 85.41ms. Allocated memory was 62.9MB in the beginning and 88.1MB in the end (delta: 25.2MB). Free memory was 27.6MB in the beginning and 69.0MB in the end (delta: -41.4MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2022-07-12 03:19:06,556 INFO L158 Benchmark]: RCFGBuilder took 578.30ms. Allocated memory is still 88.1MB. Free memory was 69.0MB in the beginning and 54.6MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-12 03:19:06,556 INFO L158 Benchmark]: TraceAbstraction took 1081.82ms. Allocated memory is still 88.1MB. Free memory was 54.3MB in the beginning and 48.3MB in the end (delta: 6.0MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2022-07-12 03:19:06,557 INFO L158 Benchmark]: Witness Printer took 2.85ms. Allocated memory is still 88.1MB. Free memory was 48.3MB in the beginning and 47.9MB in the end (delta: 460.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 03:19:06,565 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 62.9MB. Free memory was 45.0MB in the beginning and 44.9MB in the end (delta: 51.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 530.71ms. Allocated memory is still 62.9MB. Free memory was 41.4MB in the beginning and 30.2MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.29ms. Allocated memory is still 62.9MB. Free memory was 30.2MB in the beginning and 27.6MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 85.41ms. Allocated memory was 62.9MB in the beginning and 88.1MB in the end (delta: 25.2MB). Free memory was 27.6MB in the beginning and 69.0MB in the end (delta: -41.4MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. * RCFGBuilder took 578.30ms. Allocated memory is still 88.1MB. Free memory was 69.0MB in the beginning and 54.6MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1081.82ms. Allocated memory is still 88.1MB. Free memory was 54.3MB in the beginning and 48.3MB in the end (delta: 6.0MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. * Witness Printer took 2.85ms. Allocated memory is still 88.1MB. Free memory was 48.3MB in the beginning and 47.9MB in the end (delta: 460.0kB). There was no memory consumed. 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 - UnprovableResult [Line: 980]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 992. Possible FailurePath: [L987] int globalState = 0; VAL [globalState=0] [L992] CALL, EXPR l_open("unknown",00) [L1002] CALL, EXPR open(file,flags) [L985] return __VERIFIER_nondet_int(); [L1002] RET, EXPR open(file,flags) [L1002] int fd = open(file,flags); [L1003] COND FALSE !(fd>0) VAL [\old(flags)=0, fd=0, file={4:0}, file={4:0}, flags=0, globalState=0] [L1004] return fd; VAL [\old(flags)=0, \result=0, fd=0, file={4:0}, file={4:0}, flags=0, globalState=0] [L992] RET, EXPR l_open("unknown",00) [L992] int file = l_open("unknown",00); [L993] void* cbuf = (void*) malloc(sizeof(char)*100); [L994] CALL l_read(file,cbuf,99) [L998] (globalState == 1) ? (0) : __blast_assert () [L998] CALL __blast_assert () [L980] reach_error() VAL [globalState=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 13 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 13 SizeOfPredicates, 0 NumberOfNonLiveVariables, 59 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-12 03:19:06,600 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: UNKNOWN: Overapproximated counterexample