./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/verisec_NetBSD-libc_loop.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/loops/verisec_NetBSD-libc_loop.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 dedd0e691082a54e7ab91bc5c89cd5119d7051d93eccccd50f69369896fe2c2c --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 15:09:46,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 15:09:46,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 15:09:46,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 15:09:46,506 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 15:09:46,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 15:09:46,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 15:09:46,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 15:09:46,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 15:09:46,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 15:09:46,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 15:09:46,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 15:09:46,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 15:09:46,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 15:09:46,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 15:09:46,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 15:09:46,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 15:09:46,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 15:09:46,536 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 15:09:46,544 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 15:09:46,546 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 15:09:46,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 15:09:46,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 15:09:46,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 15:09:46,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 15:09:46,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 15:09:46,559 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 15:09:46,559 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 15:09:46,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 15:09:46,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 15:09:46,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 15:09:46,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 15:09:46,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 15:09:46,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 15:09:46,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 15:09:46,571 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 15:09:46,571 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 15:09:46,572 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 15:09:46,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 15:09:46,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 15:09:46,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 15:09:46,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 15:09:46,576 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 15:09:46,611 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 15:09:46,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 15:09:46,612 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 15:09:46,612 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 15:09:46,613 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 15:09:46,613 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 15:09:46,614 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 15:09:46,614 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 15:09:46,614 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 15:09:46,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 15:09:46,616 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 15:09:46,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 15:09:46,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 15:09:46,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 15:09:46,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 15:09:46,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 15:09:46,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 15:09:46,617 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 15:09:46,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 15:09:46,619 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 15:09:46,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 15:09:46,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 15:09:46,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 15:09:46,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 15:09:46,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 15:09:46,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 15:09:46,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 15:09:46,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 15:09:46,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 15:09:46,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 15:09:46,624 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 15:09:46,624 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 15:09:46,625 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 15:09:46,625 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dedd0e691082a54e7ab91bc5c89cd5119d7051d93eccccd50f69369896fe2c2c [2022-07-22 15:09:46,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 15:09:46,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 15:09:46,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 15:09:46,895 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 15:09:46,895 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 15:09:46,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/verisec_NetBSD-libc_loop.i [2022-07-22 15:09:46,958 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60032ebbd/a26c624db3044162867336d657c06fab/FLAG327bf0eb0 [2022-07-22 15:09:47,428 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 15:09:47,429 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/verisec_NetBSD-libc_loop.i [2022-07-22 15:09:47,435 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60032ebbd/a26c624db3044162867336d657c06fab/FLAG327bf0eb0 [2022-07-22 15:09:47,458 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60032ebbd/a26c624db3044162867336d657c06fab [2022-07-22 15:09:47,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 15:09:47,462 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 15:09:47,464 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 15:09:47,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 15:09:47,468 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 15:09:47,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 03:09:47" (1/1) ... [2022-07-22 15:09:47,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40635359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:09:47, skipping insertion in model container [2022-07-22 15:09:47,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 03:09:47" (1/1) ... [2022-07-22 15:09:47,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 15:09:47,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 15:09:47,648 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/loops/verisec_NetBSD-libc_loop.i[825,838] [2022-07-22 15:09:47,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 15:09:47,671 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 15:09:47,682 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/loops/verisec_NetBSD-libc_loop.i[825,838] [2022-07-22 15:09:47,692 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 15:09:47,704 INFO L208 MainTranslator]: Completed translation [2022-07-22 15:09:47,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:09:47 WrapperNode [2022-07-22 15:09:47,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 15:09:47,706 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 15:09:47,706 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 15:09:47,706 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 15:09:47,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:09:47" (1/1) ... [2022-07-22 15:09:47,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:09:47" (1/1) ... [2022-07-22 15:09:47,737 INFO L137 Inliner]: procedures = 16, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 43 [2022-07-22 15:09:47,738 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 15:09:47,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 15:09:47,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 15:09:47,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 15:09:47,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:09:47" (1/1) ... [2022-07-22 15:09:47,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:09:47" (1/1) ... [2022-07-22 15:09:47,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:09:47" (1/1) ... [2022-07-22 15:09:47,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:09:47" (1/1) ... [2022-07-22 15:09:47,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:09:47" (1/1) ... [2022-07-22 15:09:47,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:09:47" (1/1) ... [2022-07-22 15:09:47,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:09:47" (1/1) ... [2022-07-22 15:09:47,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 15:09:47,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 15:09:47,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 15:09:47,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 15:09:47,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:09:47" (1/1) ... [2022-07-22 15:09:47,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 15:09:47,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:09:47,809 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) [2022-07-22 15:09:47,812 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 [2022-07-22 15:09:47,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 15:09:47,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 15:09:47,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 15:09:47,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 15:09:47,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 15:09:47,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 15:09:47,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 15:09:47,920 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 15:09:47,921 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 15:09:48,086 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 15:09:48,091 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 15:09:48,106 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 15:09:48,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:09:48 BoogieIcfgContainer [2022-07-22 15:09:48,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 15:09:48,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 15:09:48,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 15:09:48,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 15:09:48,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 03:09:47" (1/3) ... [2022-07-22 15:09:48,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b1acb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 03:09:48, skipping insertion in model container [2022-07-22 15:09:48,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:09:47" (2/3) ... [2022-07-22 15:09:48,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b1acb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 03:09:48, skipping insertion in model container [2022-07-22 15:09:48,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:09:48" (3/3) ... [2022-07-22 15:09:48,116 INFO L111 eAbstractionObserver]: Analyzing ICFG verisec_NetBSD-libc_loop.i [2022-07-22 15:09:48,137 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 15:09:48,137 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 15:09:48,221 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 15:09:48,227 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@1b678fd8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1ce3074e [2022-07-22 15:09:48,228 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 15:09:48,231 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 15:09:48,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-22 15:09:48,237 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:09:48,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-22 15:09:48,238 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:09:48,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:09:48,244 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-07-22 15:09:48,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:09:48,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594946813] [2022-07-22 15:09:48,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:09:48,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:09:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:09:48,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:09:48,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:09:48,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594946813] [2022-07-22 15:09:48,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594946813] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 15:09:48,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 15:09:48,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 15:09:48,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429496433] [2022-07-22 15:09:48,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 15:09:48,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 15:09:48,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:09:48,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 15:09:48,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 15:09:48,556 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-07-22 15:09:48,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:09:48,646 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2022-07-22 15:09:48,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 15:09:48,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2022-07-22 15:09:48,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:09:48,677 INFO L225 Difference]: With dead ends: 33 [2022-07-22 15:09:48,678 INFO L226 Difference]: Without dead ends: 12 [2022-07-22 15:09:48,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 15:09:48,685 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 17 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 15:09:48,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 28 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 15:09:48,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-07-22 15:09:48,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2022-07-22 15:09:48,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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) [2022-07-22 15:09:48,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2022-07-22 15:09:48,716 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2022-07-22 15:09:48,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:09:48,717 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2022-07-22 15:09:48,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-07-22 15:09:48,718 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2022-07-22 15:09:48,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-22 15:09:48,719 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:09:48,719 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 15:09:48,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 15:09:48,720 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:09:48,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:09:48,722 INFO L85 PathProgramCache]: Analyzing trace with hash -185344033, now seen corresponding path program 1 times [2022-07-22 15:09:48,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:09:48,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798238598] [2022-07-22 15:09:48,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:09:48,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:09:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:09:48,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:09:48,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:09:48,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798238598] [2022-07-22 15:09:48,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798238598] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 15:09:48,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556150371] [2022-07-22 15:09:48,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:09:48,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:09:48,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:09:48,871 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) [2022-07-22 15:09:48,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 15:09:48,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:09:48,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-22 15:09:48,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:09:49,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:09:49,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 15:09:49,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 15:09:49,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556150371] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 15:09:49,155 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 15:09:49,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-07-22 15:09:49,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811891954] [2022-07-22 15:09:49,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 15:09:49,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 15:09:49,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:09:49,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 15:09:49,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 15:09:49,159 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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) [2022-07-22 15:09:49,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:09:49,219 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-07-22 15:09:49,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 15:09:49,220 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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) Word has length 9 [2022-07-22 15:09:49,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:09:49,220 INFO L225 Difference]: With dead ends: 19 [2022-07-22 15:09:49,220 INFO L226 Difference]: Without dead ends: 17 [2022-07-22 15:09:49,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-07-22 15:09:49,222 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 11 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 15:09:49,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 15 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 15:09:49,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-07-22 15:09:49,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2022-07-22 15:09:49,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 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) [2022-07-22 15:09:49,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-07-22 15:09:49,227 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 9 [2022-07-22 15:09:49,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:09:49,227 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-07-22 15:09:49,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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) [2022-07-22 15:09:49,228 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-07-22 15:09:49,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-22 15:09:49,228 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:09:49,229 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2022-07-22 15:09:49,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 15:09:49,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:09:49,444 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:09:49,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:09:49,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1625670603, now seen corresponding path program 2 times [2022-07-22 15:09:49,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:09:49,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674855284] [2022-07-22 15:09:49,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:09:49,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:09:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 15:09:49,477 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 15:09:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 15:09:49,529 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 15:09:49,530 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 15:09:49,530 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-22 15:09:49,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 15:09:49,534 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1] [2022-07-22 15:09:49,537 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 15:09:49,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 03:09:49 BoogieIcfgContainer [2022-07-22 15:09:49,564 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 15:09:49,565 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 15:09:49,565 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 15:09:49,565 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 15:09:49,565 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:09:48" (3/4) ... [2022-07-22 15:09:49,567 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-22 15:09:49,605 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 15:09:49,606 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 15:09:49,606 INFO L158 Benchmark]: Toolchain (without parser) took 2144.63ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 29.5MB in the beginning and 29.4MB in the end (delta: 172.2kB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. [2022-07-22 15:09:49,607 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 73.4MB. Free memory is still 46.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 15:09:49,612 INFO L158 Benchmark]: CACSL2BoogieTranslator took 240.69ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 29.4MB in the beginning and 59.8MB in the end (delta: -30.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-22 15:09:49,612 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.21ms. Allocated memory is still 88.1MB. Free memory was 59.8MB in the beginning and 58.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 15:09:49,612 INFO L158 Benchmark]: Boogie Preprocessor took 35.29ms. Allocated memory is still 88.1MB. Free memory was 58.2MB in the beginning and 57.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 15:09:49,613 INFO L158 Benchmark]: RCFGBuilder took 333.33ms. Allocated memory is still 88.1MB. Free memory was 57.0MB in the beginning and 47.5MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 15:09:49,613 INFO L158 Benchmark]: TraceAbstraction took 1454.64ms. Allocated memory is still 88.1MB. Free memory was 47.0MB in the beginning and 31.9MB in the end (delta: 15.0MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2022-07-22 15:09:49,613 INFO L158 Benchmark]: Witness Printer took 41.10ms. Allocated memory is still 88.1MB. Free memory was 31.5MB in the beginning and 29.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 15:09:49,615 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 73.4MB. Free memory is still 46.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 240.69ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 29.4MB in the beginning and 59.8MB in the end (delta: -30.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.21ms. Allocated memory is still 88.1MB. Free memory was 59.8MB in the beginning and 58.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.29ms. Allocated memory is still 88.1MB. Free memory was 58.2MB in the beginning and 57.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 333.33ms. Allocated memory is still 88.1MB. Free memory was 57.0MB in the beginning and 47.5MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1454.64ms. Allocated memory is still 88.1MB. Free memory was 47.0MB in the beginning and 31.9MB in the end (delta: 15.0MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. * Witness Printer took 41.10ms. Allocated memory is still 88.1MB. Free memory was 31.5MB in the beginning and 29.4MB 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 - CounterExampleResult [Line: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] Char *tmp; VAL [tmp={0:0}] [L40] Char pathbuf[1 +1]; [L42] Char *bound = pathbuf + sizeof(pathbuf) - 1; [L44] tmp = pathbuf + sizeof(pathbuf)/sizeof(*pathbuf) - 1 [L46] CALL glob2 (pathbuf, bound) [L27] Char *p; [L29] p = pathbuf VAL [p={3:0}, pathbuf={3:0}, pathbuf={3:0}, pathlim={3:28}, pathlim={3:28}, tmp={3:4}] [L29] COND TRUE p <= pathlim [L31] CALL __VERIFIER_assert(p<=tmp) [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, tmp={3:4}] [L31] RET __VERIFIER_assert(p<=tmp) [L32] *p = 1 VAL [p={3:0}, pathbuf={3:0}, pathbuf={3:0}, pathlim={3:28}, pathlim={3:28}, tmp={3:4}] [L29] p++ VAL [p={3:4}, pathbuf={3:0}, pathbuf={3:0}, pathlim={3:28}, pathlim={3:28}, tmp={3:4}] [L29] COND TRUE p <= pathlim [L31] CALL __VERIFIER_assert(p<=tmp) [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, tmp={3:4}] [L31] RET __VERIFIER_assert(p<=tmp) [L32] *p = 1 VAL [p={3:4}, pathbuf={3:0}, pathbuf={3:0}, pathlim={3:28}, pathlim={3:28}, tmp={3:4}] [L29] p++ VAL [p={3:8}, pathbuf={3:0}, pathbuf={3:0}, pathlim={3:28}, pathlim={3:28}, tmp={3:4}] [L29] COND TRUE p <= pathlim [L31] CALL __VERIFIER_assert(p<=tmp) [L15] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, tmp={3:4}] [L16] reach_error() VAL [\old(cond)=0, cond=0, tmp={3:4}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 28 mSDsluCounter, 43 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 31 IncrementalHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 18 mSDtfsCounter, 31 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=2, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 160 SizeOfPredicates, 11 NumberOfNonLiveVariables, 91 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-07-22 15:09:49,655 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE