./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 5fbdf5bf 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 63816408f16166958351bc134d9ad3d8551cdcd0 ................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 10:36:18,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 10:36:18,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 10:36:18,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 10:36:18,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 10:36:18,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 10:36:18,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 10:36:18,090 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 10:36:18,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 10:36:18,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 10:36:18,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 10:36:18,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 10:36:18,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 10:36:18,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 10:36:18,110 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 10:36:18,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 10:36:18,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 10:36:18,113 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 10:36:18,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 10:36:18,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 10:36:18,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 10:36:18,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 10:36:18,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 10:36:18,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 10:36:18,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 10:36:18,125 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 10:36:18,125 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 10:36:18,126 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 10:36:18,126 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 10:36:18,127 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 10:36:18,127 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 10:36:18,127 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 10:36:18,128 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 10:36:18,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 10:36:18,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 10:36:18,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 10:36:18,130 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 10:36:18,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 10:36:18,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 10:36:18,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 10:36:18,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 10:36:18,136 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 10:36:18,161 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 10:36:18,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 10:36:18,162 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 10:36:18,162 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 10:36:18,163 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 10:36:18,163 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 10:36:18,163 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 10:36:18,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 10:36:18,163 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 10:36:18,164 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 10:36:18,164 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 10:36:18,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 10:36:18,164 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 10:36:18,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 10:36:18,164 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 10:36:18,164 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 10:36:18,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 10:36:18,165 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 10:36:18,165 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 10:36:18,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 10:36:18,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 10:36:18,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 10:36:18,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 10:36:18,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 10:36:18,165 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 10:36:18,165 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 10:36:18,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 10:36:18,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 10:36:18,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 10:36:18,166 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 10:36:18,166 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63816408f16166958351bc134d9ad3d8551cdcd0 [2021-08-29 10:36:18,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 10:36:18,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 10:36:18,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 10:36:18,494 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 10:36:18,495 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 10:36:18,496 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i [2021-08-29 10:36:18,562 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/655ee32e6/0c0abcda26a54bbc99c470be29295328/FLAG58fbdf3db [2021-08-29 10:36:18,986 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 10:36:18,987 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i [2021-08-29 10:36:18,992 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/655ee32e6/0c0abcda26a54bbc99c470be29295328/FLAG58fbdf3db [2021-08-29 10:36:19,009 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/655ee32e6/0c0abcda26a54bbc99c470be29295328 [2021-08-29 10:36:19,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 10:36:19,017 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 10:36:19,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 10:36:19,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 10:36:19,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 10:36:19,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:36:19" (1/1) ... [2021-08-29 10:36:19,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3390e794 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:36:19, skipping insertion in model container [2021-08-29 10:36:19,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:36:19" (1/1) ... [2021-08-29 10:36:19,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 10:36:19,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 10:36:19,176 WARN L228 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] [2021-08-29 10:36:19,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 10:36:19,199 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 10:36:19,211 WARN L228 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] [2021-08-29 10:36:19,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 10:36:19,239 INFO L208 MainTranslator]: Completed translation [2021-08-29 10:36:19,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:36:19 WrapperNode [2021-08-29 10:36:19,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 10:36:19,242 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 10:36:19,242 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 10:36:19,242 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 10:36:19,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:36:19" (1/1) ... [2021-08-29 10:36:19,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:36:19" (1/1) ... [2021-08-29 10:36:19,276 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 10:36:19,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 10:36:19,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 10:36:19,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 10:36:19,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:36:19" (1/1) ... [2021-08-29 10:36:19,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:36:19" (1/1) ... [2021-08-29 10:36:19,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:36:19" (1/1) ... [2021-08-29 10:36:19,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:36:19" (1/1) ... [2021-08-29 10:36:19,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:36:19" (1/1) ... [2021-08-29 10:36:19,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:36:19" (1/1) ... [2021-08-29 10:36:19,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:36:19" (1/1) ... [2021-08-29 10:36:19,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 10:36:19,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 10:36:19,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 10:36:19,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 10:36:19,307 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:36:19" (1/1) ... [2021-08-29 10:36:19,313 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 10:36:19,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 10:36:19,338 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) [2021-08-29 10:36:19,360 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 [2021-08-29 10:36:19,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 10:36:19,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 10:36:19,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 10:36:19,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 10:36:19,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 10:36:19,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 10:36:19,524 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 10:36:19,524 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-08-29 10:36:19,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:36:19 BoogieIcfgContainer [2021-08-29 10:36:19,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 10:36:19,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 10:36:19,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 10:36:19,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 10:36:19,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:36:19" (1/3) ... [2021-08-29 10:36:19,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@724de916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:36:19, skipping insertion in model container [2021-08-29 10:36:19,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:36:19" (2/3) ... [2021-08-29 10:36:19,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@724de916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:36:19, skipping insertion in model container [2021-08-29 10:36:19,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:36:19" (3/3) ... [2021-08-29 10:36:19,534 INFO L111 eAbstractionObserver]: Analyzing ICFG veris.c_NetBSD-libc_loop.i [2021-08-29 10:36:19,541 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 10:36:19,541 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 10:36:19,592 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 10:36:19,599 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-08-29 10:36:19,599 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 10:36:19,612 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) [2021-08-29 10:36:19,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-29 10:36:19,618 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 10:36:19,619 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-29 10:36:19,619 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 10:36:19,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 10:36:19,625 INFO L82 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2021-08-29 10:36:19,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 10:36:19,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709219129] [2021-08-29 10:36:19,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 10:36:19,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 10:36:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 10:36:19,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 10:36:19,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 10:36:19,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709219129] [2021-08-29 10:36:19,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709219129] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 10:36:19,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 10:36:19,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 10:36:19,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700457648] [2021-08-29 10:36:19,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 10:36:19,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 10:36:19,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 10:36:19,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 10:36:19,996 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) [2021-08-29 10:36:20,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 10:36:20,066 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2021-08-29 10:36:20,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 10:36:20,069 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 [2021-08-29 10:36:20,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 10:36:20,075 INFO L225 Difference]: With dead ends: 33 [2021-08-29 10:36:20,075 INFO L226 Difference]: Without dead ends: 12 [2021-08-29 10:36:20,078 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.06ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 10:36:20,084 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.97ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.96ms IncrementalHoareTripleChecker+Time [2021-08-29 10:36:20,085 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 43 Unknown, 0 Unchecked, 0.97ms Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 40.96ms Time] [2021-08-29 10:36:20,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-08-29 10:36:20,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2021-08-29 10:36:20,110 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) [2021-08-29 10:36:20,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-08-29 10:36:20,112 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2021-08-29 10:36:20,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 10:36:20,112 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-08-29 10:36:20,113 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) [2021-08-29 10:36:20,113 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-08-29 10:36:20,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-29 10:36:20,114 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 10:36:20,114 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 10:36:20,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 10:36:20,115 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 10:36:20,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 10:36:20,117 INFO L82 PathProgramCache]: Analyzing trace with hash -185344033, now seen corresponding path program 1 times [2021-08-29 10:36:20,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 10:36:20,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675488108] [2021-08-29 10:36:20,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 10:36:20,118 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 10:36:20,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 10:36:20,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 10:36:20,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 10:36:20,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675488108] [2021-08-29 10:36:20,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675488108] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 10:36:20,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270227506] [2021-08-29 10:36:20,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 10:36:20,247 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 10:36:20,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 10:36:20,265 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) [2021-08-29 10:36:20,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-29 10:36:20,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 10:36:20,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-29 10:36:20,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 10:36:20,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 10:36:20,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 10:36:20,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 10:36:20,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270227506] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 10:36:20,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 10:36:20,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2021-08-29 10:36:20,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469445115] [2021-08-29 10:36:20,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-29 10:36:20,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 10:36:20,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-29 10:36:20,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-29 10:36:20,661 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 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) [2021-08-29 10:36:20,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 10:36:20,753 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-08-29 10:36:20,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 10:36:20,754 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 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 9 [2021-08-29 10:36:20,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 10:36:20,755 INFO L225 Difference]: With dead ends: 19 [2021-08-29 10:36:20,755 INFO L226 Difference]: Without dead ends: 17 [2021-08-29 10:36:20,755 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 84.58ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-08-29 10:36:20,756 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.89ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.69ms IncrementalHoareTripleChecker+Time [2021-08-29 10:36:20,757 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 49 Unknown, 0 Unchecked, 1.89ms Time], IncrementalHoareTripleChecker [7 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 47.69ms Time] [2021-08-29 10:36:20,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-08-29 10:36:20,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2021-08-29 10:36:20,765 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) [2021-08-29 10:36:20,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-08-29 10:36:20,766 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 9 [2021-08-29 10:36:20,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 10:36:20,766 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-08-29 10:36:20,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 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) [2021-08-29 10:36:20,771 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-08-29 10:36:20,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-29 10:36:20,771 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 10:36:20,771 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2021-08-29 10:36:20,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-08-29 10:36:20,972 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 [2021-08-29 10:36:20,972 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 10:36:20,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 10:36:20,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1625670603, now seen corresponding path program 2 times [2021-08-29 10:36:20,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 10:36:20,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621975801] [2021-08-29 10:36:20,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 10:36:20,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 10:36:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 10:36:21,048 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-29 10:36:21,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 10:36:21,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621975801] [2021-08-29 10:36:21,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621975801] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 10:36:21,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045837584] [2021-08-29 10:36:21,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-29 10:36:21,052 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 10:36:21,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 10:36:21,053 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) [2021-08-29 10:36:21,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-29 10:36:21,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-29 10:36:21,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 10:36:21,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-29 10:36:21,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 10:36:21,209 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-08-29 10:36:21,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 10:36:21,325 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-08-29 10:36:21,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045837584] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 10:36:21,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 10:36:21,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 6 [2021-08-29 10:36:21,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527643921] [2021-08-29 10:36:21,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 10:36:21,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 10:36:21,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 10:36:21,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-29 10:36:21,327 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) [2021-08-29 10:36:21,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 10:36:21,355 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-08-29 10:36:21,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 10:36:21,355 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 [2021-08-29 10:36:21,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 10:36:21,356 INFO L225 Difference]: With dead ends: 14 [2021-08-29 10:36:21,356 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 10:36:21,356 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 40.49ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-08-29 10:36:21,357 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.21ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.98ms IncrementalHoareTripleChecker+Time [2021-08-29 10:36:21,358 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 15 Unknown, 0 Unchecked, 0.21ms Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 11.98ms Time] [2021-08-29 10:36:21,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 10:36:21,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 10:36:21,359 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) [2021-08-29 10:36:21,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 10:36:21,359 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-08-29 10:36:21,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 10:36:21,359 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 10:36:21,359 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) [2021-08-29 10:36:21,360 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 10:36:21,360 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 10:36:21,362 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 10:36:21,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-08-29 10:36:21,587 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 [2021-08-29 10:36:21,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 10:36:21,592 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 10:36:21,599 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 10:36:21,615 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 10:36:21,617 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 10:36:21,682 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 10:36:21,682 INFO L858 garLoopResultBuilder]: For program point L29-2(lines 29 33) no Hoare annotation was computed. [2021-08-29 10:36:21,683 INFO L854 garLoopResultBuilder]: At program point L29-3(lines 29 33) the Hoare annotation is: (let ((.cse0 (= ~tmp~0.base ULTIMATE.start_glob2_~p~0.base)) (.cse1 (= ULTIMATE.start_glob2_~pathlim.base ~tmp~0.base)) (.cse2 (<= ULTIMATE.start_glob2_~pathlim.offset ~tmp~0.offset))) (or (and .cse0 .cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse2) (and .cse0 .cse1 (<= 4 ~tmp~0.offset) .cse2 (= ULTIMATE.start_glob2_~p~0.offset 0)))) [2021-08-29 10:36:21,686 INFO L858 garLoopResultBuilder]: For program point L29-4(lines 29 33) no Hoare annotation was computed. [2021-08-29 10:36:21,686 INFO L854 garLoopResultBuilder]: At program point L48(lines 38 49) the Hoare annotation is: (or (and (= ULTIMATE.start_glob2_~pathlim.base ~tmp~0.base) (<= 4 ~tmp~0.offset) (= ULTIMATE.start_glob2_~p~0.offset 0)) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-08-29 10:36:21,686 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-08-29 10:36:21,686 INFO L854 garLoopResultBuilder]: At program point L15-2(lines 14 19) the Hoare annotation is: (and (= ~tmp~0.base ULTIMATE.start_glob2_~p~0.base) (= ULTIMATE.start_glob2_~pathlim.base ~tmp~0.base) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= ULTIMATE.start_glob2_~pathlim.offset ~tmp~0.offset)) [2021-08-29 10:36:21,687 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 10:36:21,687 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 10:36:21,687 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 10:36:21,687 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-08-29 10:36:21,687 INFO L858 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-08-29 10:36:21,688 INFO L854 garLoopResultBuilder]: At program point L35(lines 25 36) the Hoare annotation is: (or (and (= ULTIMATE.start_glob2_~pathlim.base ~tmp~0.base) (<= 4 ~tmp~0.offset) (= ULTIMATE.start_glob2_~p~0.offset 0)) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-08-29 10:36:21,696 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 10:36:21,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 10:36:21 BoogieIcfgContainer [2021-08-29 10:36:21,711 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 10:36:21,712 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 10:36:21,712 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 10:36:21,712 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 10:36:21,713 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:36:19" (3/4) ... [2021-08-29 10:36:21,715 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 10:36:21,724 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-08-29 10:36:21,724 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-08-29 10:36:21,724 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 10:36:21,725 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 10:36:21,750 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 10:36:21,751 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 10:36:21,751 INFO L158 Benchmark]: Toolchain (without parser) took 2734.37ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 48.0MB in the beginning and 36.9MB in the end (delta: 11.1MB). Peak memory consumption was 24.7MB. Max. memory is 16.1GB. [2021-08-29 10:36:21,752 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 67.1MB. Free memory was 49.7MB in the beginning and 49.7MB in the end (delta: 48.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 10:36:21,752 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.87ms. Allocated memory is still 67.1MB. Free memory was 47.7MB in the beginning and 51.6MB in the end (delta: -3.9MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. [2021-08-29 10:36:21,752 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.76ms. Allocated memory is still 67.1MB. Free memory was 51.4MB in the beginning and 50.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 10:36:21,753 INFO L158 Benchmark]: Boogie Preprocessor took 28.27ms. Allocated memory is still 67.1MB. Free memory was 50.1MB in the beginning and 48.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 10:36:21,753 INFO L158 Benchmark]: RCFGBuilder took 220.08ms. Allocated memory is still 67.1MB. Free memory was 48.9MB in the beginning and 40.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 10:36:21,753 INFO L158 Benchmark]: TraceAbstraction took 2182.09ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 39.8MB in the beginning and 39.2MB in the end (delta: 671.7kB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2021-08-29 10:36:21,754 INFO L158 Benchmark]: Witness Printer took 39.22ms. Allocated memory is still 81.8MB. Free memory was 39.2MB in the beginning and 36.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 10:36:21,755 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 67.1MB. Free memory was 49.7MB in the beginning and 49.7MB in the end (delta: 48.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 221.87ms. Allocated memory is still 67.1MB. Free memory was 47.7MB in the beginning and 51.6MB in the end (delta: -3.9MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.76ms. Allocated memory is still 67.1MB. Free memory was 51.4MB in the beginning and 50.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.27ms. Allocated memory is still 67.1MB. Free memory was 50.1MB in the beginning and 48.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 220.08ms. Allocated memory is still 67.1MB. Free memory was 48.9MB in the beginning and 40.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2182.09ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 39.8MB in the beginning and 39.2MB in the end (delta: 671.7kB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. * Witness Printer took 39.22ms. Allocated memory is still 81.8MB. Free memory was 39.2MB in the beginning and 36.9MB in the end (delta: 2.3MB). 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, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms 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: 2105.68ms, OverallIterations: 3, TraceHistogramMax: 3, EmptinessCheckTime: 10.40ms, AutomataDifference: 284.31ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 94.19ms, InitialAbstractionConstructionTime: 9.59ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 37 SdHoareTripleChecker+Valid, 100.63ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 37 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 81.79ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 30 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 96 IncrementalHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 0 mSDtfsCounter, 96 mSolverCounterSat, 3.08ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 159.14ms Time, 0.00ms 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, 0.00ms DumpTime, AutomataMinimizationStatistics: 22.61ms AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 13 NumberOfFragments, 73 HoareAnnotationTreeSize, 4 FomulaSimplifications, 118 FormulaSimplificationTreeSizeReduction, 33.76ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 55.10ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 54.63ms SsaConstructionTime, 107.57ms SatisfiabilityAnalysisTime, 863.43ms InterpolantComputationTime, 49 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 370 SizeOfPredicates, 26 NumberOfNonLiveVariables, 163 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 16/30 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: (((tmp == p && pathlim == tmp) && 1 <= cond) && pathlim <= tmp) || ((((tmp == p && pathlim == tmp) && 4 <= tmp) && pathlim <= tmp) && p == 0) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((tmp == p && pathlim == tmp) && 1 <= cond) && pathlim <= tmp - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((pathlim == tmp && 4 <= tmp) && p == 0) || !(0 == cond) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((pathlim == tmp && 4 <= tmp) && p == 0) || !(0 == cond) RESULT: Ultimate proved your program to be correct! [2021-08-29 10:36:21,792 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...