./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/veris.c_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 b1c73403384a361e15608c077b8e86297621fa69c42f15894e841079f64af74a --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 09:39:44,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 09:39:44,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 09:39:44,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 09:39:44,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 09:39:44,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 09:39:44,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 09:39:44,627 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 09:39:44,628 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 09:39:44,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 09:39:44,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 09:39:44,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 09:39:44,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 09:39:44,635 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 09:39:44,636 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 09:39:44,639 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 09:39:44,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 09:39:44,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 09:39:44,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 09:39:44,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 09:39:44,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 09:39:44,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 09:39:44,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 09:39:44,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 09:39:44,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 09:39:44,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 09:39:44,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 09:39:44,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 09:39:44,659 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 09:39:44,659 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 09:39:44,660 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 09:39:44,660 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 09:39:44,661 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 09:39:44,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 09:39:44,663 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 09:39:44,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 09:39:44,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 09:39:44,663 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 09:39:44,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 09:39:44,664 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 09:39:44,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 09:39:44,666 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 09:39:44,695 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 09:39:44,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 09:39:44,695 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 09:39:44,696 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 09:39:44,696 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 09:39:44,697 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 09:39:44,697 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 09:39:44,697 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 09:39:44,697 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 09:39:44,697 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 09:39:44,698 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 09:39:44,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 09:39:44,698 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 09:39:44,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 09:39:44,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 09:39:44,699 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 09:39:44,699 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 09:39:44,699 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 09:39:44,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 09:39:44,699 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 09:39:44,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 09:39:44,700 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 09:39:44,700 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 09:39:44,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 09:39:44,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 09:39:44,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 09:39:44,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 09:39:44,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 09:39:44,701 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 09:39:44,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 09:39:44,701 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 09:39:44,701 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 09:39:44,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 09:39:44,701 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 09:39:44,702 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1c73403384a361e15608c077b8e86297621fa69c42f15894e841079f64af74a [2021-12-17 09:39:44,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 09:39:44,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 09:39:44,945 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 09:39:44,945 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 09:39:44,946 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 09:39:44,947 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i [2021-12-17 09:39:45,010 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67b0e4981/4972d281bb014020a325b6a1bec8a2f3/FLAG0443d0b7e [2021-12-17 09:39:45,422 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 09:39:45,423 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i [2021-12-17 09:39:45,427 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67b0e4981/4972d281bb014020a325b6a1bec8a2f3/FLAG0443d0b7e [2021-12-17 09:39:45,440 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67b0e4981/4972d281bb014020a325b6a1bec8a2f3 [2021-12-17 09:39:45,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 09:39:45,444 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 09:39:45,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 09:39:45,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 09:39:45,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 09:39:45,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 09:39:45" (1/1) ... [2021-12-17 09:39:45,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3709dca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:39:45, skipping insertion in model container [2021-12-17 09:39:45,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 09:39:45" (1/1) ... [2021-12-17 09:39:45,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 09:39:45,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 09:39:45,618 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/loops/veris.c_NetBSD-libc_loop.i[825,838] [2021-12-17 09:39:45,634 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 09:39:45,640 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 09:39:45,651 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/veris.c_NetBSD-libc_loop.i[825,838] [2021-12-17 09:39:45,660 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 09:39:45,672 INFO L208 MainTranslator]: Completed translation [2021-12-17 09:39:45,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:39:45 WrapperNode [2021-12-17 09:39:45,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 09:39:45,674 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 09:39:45,674 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 09:39:45,674 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 09:39:45,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:39:45" (1/1) ... [2021-12-17 09:39:45,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:39:45" (1/1) ... [2021-12-17 09:39:45,697 INFO L137 Inliner]: procedures = 16, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 43 [2021-12-17 09:39:45,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 09:39:45,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 09:39:45,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 09:39:45,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 09:39:45,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:39:45" (1/1) ... [2021-12-17 09:39:45,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:39:45" (1/1) ... [2021-12-17 09:39:45,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:39:45" (1/1) ... [2021-12-17 09:39:45,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:39:45" (1/1) ... [2021-12-17 09:39:45,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:39:45" (1/1) ... [2021-12-17 09:39:45,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:39:45" (1/1) ... [2021-12-17 09:39:45,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:39:45" (1/1) ... [2021-12-17 09:39:45,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 09:39:45,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 09:39:45,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 09:39:45,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 09:39:45,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:39:45" (1/1) ... [2021-12-17 09:39:45,735 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 09:39:45,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 09:39:45,757 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) [2021-12-17 09:39:45,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 09:39:45,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 09:39:45,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 09:39:45,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 09:39:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 09:39:45,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 09:39:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 09:39:45,798 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 [2021-12-17 09:39:45,858 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 09:39:45,859 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 09:39:45,977 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 09:39:45,981 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 09:39:45,981 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 09:39:45,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 09:39:45 BoogieIcfgContainer [2021-12-17 09:39:45,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 09:39:45,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 09:39:45,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 09:39:45,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 09:39:45,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 09:39:45" (1/3) ... [2021-12-17 09:39:45,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54983daa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 09:39:45, skipping insertion in model container [2021-12-17 09:39:45,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:39:45" (2/3) ... [2021-12-17 09:39:45,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54983daa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 09:39:45, skipping insertion in model container [2021-12-17 09:39:45,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 09:39:45" (3/3) ... [2021-12-17 09:39:45,988 INFO L111 eAbstractionObserver]: Analyzing ICFG veris.c_NetBSD-libc_loop.i [2021-12-17 09:39:45,991 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 09:39:45,991 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 09:39:46,023 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 09:39:46,029 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 09:39:46,029 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 09:39:46,037 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) [2021-12-17 09:39:46,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-17 09:39:46,040 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 09:39:46,041 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-17 09:39:46,041 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 09:39:46,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 09:39:46,046 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2021-12-17 09:39:46,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 09:39:46,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086513214] [2021-12-17 09:39:46,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 09:39:46,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 09:39:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 09:39:46,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 09:39:46,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 09:39:46,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086513214] [2021-12-17 09:39:46,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086513214] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 09:39:46,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 09:39:46,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 09:39:46,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025154236] [2021-12-17 09:39:46,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 09:39:46,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 09:39:46,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 09:39:46,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 09:39:46,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 09:39:46,316 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) [2021-12-17 09:39:46,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 09:39:46,377 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2021-12-17 09:39:46,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 09:39:46,379 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 [2021-12-17 09:39:46,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 09:39:46,384 INFO L225 Difference]: With dead ends: 33 [2021-12-17 09:39:46,384 INFO L226 Difference]: Without dead ends: 12 [2021-12-17 09:39:46,387 INFO L932 BasicCegarLoop]: 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 [2021-12-17 09:39:46,392 INFO L933 BasicCegarLoop]: 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 [2021-12-17 09:39:46,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 28 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 09:39:46,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-12-17 09:39:46,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2021-12-17 09:39:46,415 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) [2021-12-17 09:39:46,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-12-17 09:39:46,416 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2021-12-17 09:39:46,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 09:39:46,417 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-12-17 09:39:46,417 INFO L471 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) [2021-12-17 09:39:46,417 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-12-17 09:39:46,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-17 09:39:46,418 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 09:39:46,418 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 09:39:46,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 09:39:46,419 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 09:39:46,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 09:39:46,421 INFO L85 PathProgramCache]: Analyzing trace with hash -185344033, now seen corresponding path program 1 times [2021-12-17 09:39:46,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 09:39:46,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041873440] [2021-12-17 09:39:46,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 09:39:46,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 09:39:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 09:39:46,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 09:39:46,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 09:39:46,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041873440] [2021-12-17 09:39:46,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041873440] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 09:39:46,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147626298] [2021-12-17 09:39:46,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 09:39:46,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 09:39:46,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 09:39:46,512 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) [2021-12-17 09:39:46,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 09:39:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 09:39:46,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-17 09:39:46,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 09:39:46,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 09:39:46,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 09:39:46,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 09:39:46,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147626298] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 09:39:46,813 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 09:39:46,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2021-12-17 09:39:46,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941735535] [2021-12-17 09:39:46,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 09:39:46,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 09:39:46,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 09:39:46,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 09:39:46,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-17 09:39:46,816 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) [2021-12-17 09:39:46,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 09:39:46,845 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-12-17 09:39:46,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 09:39:46,846 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 [2021-12-17 09:39:46,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 09:39:46,846 INFO L225 Difference]: With dead ends: 19 [2021-12-17 09:39:46,847 INFO L226 Difference]: Without dead ends: 17 [2021-12-17 09:39:46,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-17 09:39:46,848 INFO L933 BasicCegarLoop]: 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 [2021-12-17 09:39:46,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 15 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 09:39:46,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-12-17 09:39:46,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2021-12-17 09:39:46,851 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) [2021-12-17 09:39:46,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-12-17 09:39:46,851 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 9 [2021-12-17 09:39:46,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 09:39:46,852 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-12-17 09:39:46,852 INFO L471 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) [2021-12-17 09:39:46,852 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-12-17 09:39:46,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-17 09:39:46,852 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 09:39:46,853 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2021-12-17 09:39:46,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 09:39:47,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 09:39:47,066 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 09:39:47,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 09:39:47,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1625670603, now seen corresponding path program 2 times [2021-12-17 09:39:47,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 09:39:47,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60529048] [2021-12-17 09:39:47,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 09:39:47,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 09:39:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 09:39:47,124 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-17 09:39:47,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 09:39:47,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60529048] [2021-12-17 09:39:47,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60529048] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 09:39:47,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419827579] [2021-12-17 09:39:47,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-17 09:39:47,126 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 09:39:47,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 09:39:47,127 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 09:39:47,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 09:39:47,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-17 09:39:47,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 09:39:47,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-17 09:39:47,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 09:39:47,240 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-17 09:39:47,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 09:39:47,329 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-17 09:39:47,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419827579] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 09:39:47,329 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 09:39:47,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-12-17 09:39:47,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751825211] [2021-12-17 09:39:47,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 09:39:47,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 09:39:47,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 09:39:47,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 09:39:47,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 09:39:47,340 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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) [2021-12-17 09:39:47,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 09:39:47,360 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-12-17 09:39:47,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 09:39:47,360 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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) Word has length 13 [2021-12-17 09:39:47,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 09:39:47,361 INFO L225 Difference]: With dead ends: 14 [2021-12-17 09:39:47,361 INFO L226 Difference]: Without dead ends: 0 [2021-12-17 09:39:47,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-17 09:39:47,364 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 09:39:47,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 6 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 09:39:47,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-17 09:39:47,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-17 09:39:47,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 09:39:47,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-17 09:39:47,367 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-12-17 09:39:47,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 09:39:47,368 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-17 09:39:47,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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) [2021-12-17 09:39:47,369 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-17 09:39:47,369 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-17 09:39:47,371 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-17 09:39:47,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 09:39:47,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-17 09:39:47,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-17 09:39:47,653 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-17 09:39:47,654 INFO L858 garLoopResultBuilder]: For program point L29-2(lines 29 33) no Hoare annotation was computed. [2021-12-17 09:39:47,654 INFO L854 garLoopResultBuilder]: At program point L29-3(lines 29 33) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_glob2_~pathlim#1.offset| ~tmp~0.offset)) (.cse1 (= ~tmp~0.base |ULTIMATE.start_glob2_~pathlim#1.base|))) (or (and (<= 1 |ULTIMATE.start___VERIFIER_assert_~cond#1|) .cse0 (= |ULTIMATE.start_glob2_~p~0#1.base| ~tmp~0.base) .cse1) (and (<= (+ |ULTIMATE.start_glob2_~p~0#1.offset| 4) ~tmp~0.offset) (= ~tmp~0.base |ULTIMATE.start_glob2_~p~0#1.base|) .cse0 .cse1))) [2021-12-17 09:39:47,654 INFO L858 garLoopResultBuilder]: For program point L29-4(lines 29 33) no Hoare annotation was computed. [2021-12-17 09:39:47,654 INFO L854 garLoopResultBuilder]: At program point L48(lines 38 49) the Hoare annotation is: (or (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) (and (<= (+ |ULTIMATE.start_glob2_~p~0#1.offset| 4) ~tmp~0.offset) (= ~tmp~0.base |ULTIMATE.start_glob2_~p~0#1.base|))) [2021-12-17 09:39:47,654 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-12-17 09:39:47,655 INFO L854 garLoopResultBuilder]: At program point L15-2(lines 14 19) the Hoare annotation is: (and (<= 1 |ULTIMATE.start___VERIFIER_assert_~cond#1|) (<= |ULTIMATE.start_glob2_~pathlim#1.offset| ~tmp~0.offset) (= |ULTIMATE.start_glob2_~p~0#1.base| ~tmp~0.base) (= ~tmp~0.base |ULTIMATE.start_glob2_~pathlim#1.base|)) [2021-12-17 09:39:47,655 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-17 09:39:47,655 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-17 09:39:47,657 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-17 09:39:47,657 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-12-17 09:39:47,657 INFO L858 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-12-17 09:39:47,657 INFO L854 garLoopResultBuilder]: At program point L35(lines 25 36) the Hoare annotation is: (or (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) (and (<= (+ |ULTIMATE.start_glob2_~p~0#1.offset| 4) ~tmp~0.offset) (= ~tmp~0.base |ULTIMATE.start_glob2_~p~0#1.base|))) [2021-12-17 09:39:47,666 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1] [2021-12-17 09:39:47,667 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 09:39:47,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 09:39:47 BoogieIcfgContainer [2021-12-17 09:39:47,687 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 09:39:47,688 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 09:39:47,688 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 09:39:47,688 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 09:39:47,688 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 09:39:45" (3/4) ... [2021-12-17 09:39:47,690 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-17 09:39:47,696 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-12-17 09:39:47,696 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-17 09:39:47,696 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-17 09:39:47,697 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-17 09:39:47,714 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-17 09:39:47,715 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 09:39:47,715 INFO L158 Benchmark]: Toolchain (without parser) took 2271.27ms. Allocated memory was 107.0MB in the beginning and 151.0MB in the end (delta: 44.0MB). Free memory was 71.3MB in the beginning and 115.4MB in the end (delta: -44.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 09:39:47,715 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 107.0MB. Free memory was 78.2MB in the beginning and 78.2MB in the end (delta: 27.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 09:39:47,715 INFO L158 Benchmark]: CACSL2BoogieTranslator took 227.44ms. Allocated memory is still 107.0MB. Free memory was 71.2MB in the beginning and 82.7MB in the end (delta: -11.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-17 09:39:47,716 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.13ms. Allocated memory is still 107.0MB. Free memory was 82.7MB in the beginning and 81.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 09:39:47,716 INFO L158 Benchmark]: Boogie Preprocessor took 30.38ms. Allocated memory is still 107.0MB. Free memory was 81.3MB in the beginning and 80.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 09:39:47,716 INFO L158 Benchmark]: RCFGBuilder took 252.88ms. Allocated memory is still 107.0MB. Free memory was 80.1MB in the beginning and 70.7MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 09:39:47,716 INFO L158 Benchmark]: TraceAbstraction took 1704.07ms. Allocated memory was 107.0MB in the beginning and 151.0MB in the end (delta: 44.0MB). Free memory was 70.3MB in the beginning and 117.5MB in the end (delta: -47.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 09:39:47,716 INFO L158 Benchmark]: Witness Printer took 26.86ms. Allocated memory is still 151.0MB. Free memory was 117.5MB in the beginning and 115.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 09:39:47,718 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 107.0MB. Free memory was 78.2MB in the beginning and 78.2MB in the end (delta: 27.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 227.44ms. Allocated memory is still 107.0MB. Free memory was 71.2MB in the beginning and 82.7MB in the end (delta: -11.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.13ms. Allocated memory is still 107.0MB. Free memory was 82.7MB in the beginning and 81.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.38ms. Allocated memory is still 107.0MB. Free memory was 81.3MB in the beginning and 80.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 252.88ms. Allocated memory is still 107.0MB. Free memory was 80.1MB in the beginning and 70.7MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1704.07ms. Allocated memory was 107.0MB in the beginning and 151.0MB in the end (delta: 44.0MB). Free memory was 70.3MB in the beginning and 117.5MB in the end (delta: -47.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 26.86ms. Allocated memory is still 151.0MB. Free memory was 117.5MB in the beginning and 115.4MB 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 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 30 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 30 mSDsluCounter, 49 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 29 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 38 IncrementalHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 20 mSDtfsCounter, 38 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 37 SyntacticMatches, 8 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=2, InterpolantAutomatonStates: 16, 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, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 13 NumberOfFragments, 70 HoareAnnotationTreeSize, 4 FomulaSimplifications, 93 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 35 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 49 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 365 SizeOfPredicates, 26 NumberOfNonLiveVariables, 166 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 18/30 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: (((1 <= cond && pathlim <= tmp) && p == tmp) && tmp == pathlim) || (((p + 4 <= tmp && tmp == p) && pathlim <= tmp) && tmp == pathlim) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((1 <= cond && pathlim <= tmp) && p == tmp) && tmp == pathlim - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: !(cond == 0) || (p + 4 <= tmp && tmp == p) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: !(cond == 0) || (p + 4 <= tmp && tmp == p) RESULT: Ultimate proved your program to be correct! [2021-12-17 09:39:47,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE