./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/McCarthy91-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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/recursive/McCarthy91-2.c -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 2a5dd5c1c64cd1875ba800cc2db6d1da955f2d2f519c1964ff87558bc42b9b4c --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 14:47:42,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 14:47:42,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 14:47:42,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 14:47:42,202 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 14:47:42,206 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 14:47:42,207 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 14:47:42,211 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 14:47:42,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 14:47:42,213 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 14:47:42,214 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 14:47:42,215 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 14:47:42,215 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 14:47:42,216 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 14:47:42,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 14:47:42,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 14:47:42,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 14:47:42,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 14:47:42,221 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 14:47:42,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 14:47:42,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 14:47:42,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 14:47:42,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 14:47:42,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 14:47:42,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 14:47:42,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 14:47:42,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 14:47:42,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 14:47:42,262 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 14:47:42,263 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 14:47:42,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 14:47:42,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 14:47:42,265 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 14:47:42,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 14:47:42,266 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 14:47:42,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 14:47:42,267 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 14:47:42,267 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 14:47:42,267 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 14:47:42,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 14:47:42,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 14:47:42,283 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 14:47:42,347 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 14:47:42,347 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 14:47:42,348 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 14:47:42,348 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 14:47:42,348 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 14:47:42,349 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 14:47:42,349 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 14:47:42,349 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 14:47:42,349 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 14:47:42,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 14:47:42,350 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 14:47:42,351 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 14:47:42,351 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 14:47:42,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 14:47:42,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 14:47:42,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 14:47:42,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 14:47:42,352 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 14:47:42,352 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 14:47:42,352 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 14:47:42,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 14:47:42,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 14:47:42,353 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 14:47:42,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 14:47:42,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 14:47:42,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 14:47:42,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 14:47:42,355 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 14:47:42,355 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 14:47:42,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 14:47:42,355 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 14:47:42,355 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 14:47:42,356 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 14:47:42,356 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 14:47:42,356 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a5dd5c1c64cd1875ba800cc2db6d1da955f2d2f519c1964ff87558bc42b9b4c [2021-12-14 14:47:42,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 14:47:42,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 14:47:42,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 14:47:42,814 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 14:47:42,814 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 14:47:42,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/McCarthy91-2.c [2021-12-14 14:47:42,904 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c6cc884c/99a7cb0abf5f495a959ba6577d735e2b/FLAG5a4d425cb [2021-12-14 14:47:43,365 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 14:47:43,366 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/McCarthy91-2.c [2021-12-14 14:47:43,371 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c6cc884c/99a7cb0abf5f495a959ba6577d735e2b/FLAG5a4d425cb [2021-12-14 14:47:43,877 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c6cc884c/99a7cb0abf5f495a959ba6577d735e2b [2021-12-14 14:47:43,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 14:47:43,881 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 14:47:43,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 14:47:43,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 14:47:43,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 14:47:43,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:47:43" (1/1) ... [2021-12-14 14:47:43,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f853324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:43, skipping insertion in model container [2021-12-14 14:47:43,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:47:43" (1/1) ... [2021-12-14 14:47:43,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 14:47:43,940 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 14:47:44,173 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/recursive/McCarthy91-2.c[749,762] [2021-12-14 14:47:44,177 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 14:47:44,188 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 14:47:44,206 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/recursive/McCarthy91-2.c[749,762] [2021-12-14 14:47:44,207 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 14:47:44,218 INFO L208 MainTranslator]: Completed translation [2021-12-14 14:47:44,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:44 WrapperNode [2021-12-14 14:47:44,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 14:47:44,221 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 14:47:44,222 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 14:47:44,222 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 14:47:44,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:44" (1/1) ... [2021-12-14 14:47:44,232 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:44" (1/1) ... [2021-12-14 14:47:44,250 INFO L137 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 23 [2021-12-14 14:47:44,250 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 14:47:44,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 14:47:44,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 14:47:44,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 14:47:44,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:44" (1/1) ... [2021-12-14 14:47:44,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:44" (1/1) ... [2021-12-14 14:47:44,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:44" (1/1) ... [2021-12-14 14:47:44,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:44" (1/1) ... [2021-12-14 14:47:44,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:44" (1/1) ... [2021-12-14 14:47:44,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:44" (1/1) ... [2021-12-14 14:47:44,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:44" (1/1) ... [2021-12-14 14:47:44,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 14:47:44,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 14:47:44,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 14:47:44,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 14:47:44,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:44" (1/1) ... [2021-12-14 14:47:44,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 14:47:44,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:47:44,293 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) [2021-12-14 14:47:44,314 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 [2021-12-14 14:47:44,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 14:47:44,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 14:47:44,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 14:47:44,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 14:47:44,328 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2021-12-14 14:47:44,328 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2021-12-14 14:47:44,374 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 14:47:44,376 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 14:47:44,460 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 14:47:44,465 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 14:47:44,465 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 14:47:44,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:47:44 BoogieIcfgContainer [2021-12-14 14:47:44,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 14:47:44,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 14:47:44,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 14:47:44,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 14:47:44,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:47:43" (1/3) ... [2021-12-14 14:47:44,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37aa19a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:47:44, skipping insertion in model container [2021-12-14 14:47:44,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:44" (2/3) ... [2021-12-14 14:47:44,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37aa19a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:47:44, skipping insertion in model container [2021-12-14 14:47:44,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:47:44" (3/3) ... [2021-12-14 14:47:44,474 INFO L111 eAbstractionObserver]: Analyzing ICFG McCarthy91-2.c [2021-12-14 14:47:44,478 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 14:47:44,478 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 14:47:44,516 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 14:47:44,522 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 [2021-12-14 14:47:44,523 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 14:47:44,535 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-14 14:47:44,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-14 14:47:44,539 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:47:44,539 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:47:44,540 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:47:44,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:47:44,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1165457142, now seen corresponding path program 1 times [2021-12-14 14:47:44,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:47:44,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751885360] [2021-12-14 14:47:44,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:47:44,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:47:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:47:44,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 14:47:44,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:47:44,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 14:47:44,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:47:44,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751885360] [2021-12-14 14:47:44,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751885360] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:47:44,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:47:44,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 14:47:44,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258106397] [2021-12-14 14:47:44,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:47:44,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 14:47:44,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:47:44,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 14:47:44,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 14:47:44,841 INFO L87 Difference]: Start difference. First operand has 18 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 14:47:44,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:47:44,997 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2021-12-14 14:47:44,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 14:47:45,000 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-12-14 14:47:45,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:47:45,008 INFO L225 Difference]: With dead ends: 30 [2021-12-14 14:47:45,008 INFO L226 Difference]: Without dead ends: 17 [2021-12-14 14:47:45,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:47:45,013 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 9 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 14:47:45,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 45 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 14:47:45,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-12-14 14:47:45,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-12-14 14:47:45,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 12 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-14 14:47:45,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2021-12-14 14:47:45,059 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 10 [2021-12-14 14:47:45,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:47:45,060 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-12-14 14:47:45,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 14:47:45,062 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2021-12-14 14:47:45,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-14 14:47:45,064 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:47:45,064 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:47:45,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 14:47:45,065 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:47:45,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:47:45,068 INFO L85 PathProgramCache]: Analyzing trace with hash -480871035, now seen corresponding path program 1 times [2021-12-14 14:47:45,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:47:45,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993627335] [2021-12-14 14:47:45,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:47:45,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:47:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:47:45,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 14:47:45,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:47:45,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 14:47:45,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:47:45,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 14:47:45,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:47:45,350 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-14 14:47:45,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:47:45,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993627335] [2021-12-14 14:47:45,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993627335] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:47:45,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15694046] [2021-12-14 14:47:45,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:47:45,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:47:45,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:47:45,359 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) [2021-12-14 14:47:45,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 14:47:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:47:45,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-14 14:47:45,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:47:45,575 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-14 14:47:45,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 14:47:46,046 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-14 14:47:46,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15694046] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 14:47:46,047 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 14:47:46,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 16 [2021-12-14 14:47:46,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734496253] [2021-12-14 14:47:46,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 14:47:46,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-14 14:47:46,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:47:46,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-14 14:47:46,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-12-14 14:47:46,051 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 16 states, 15 states have (on average 1.6) internal successors, (24), 14 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-14 14:47:46,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:47:46,300 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2021-12-14 14:47:46,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 14:47:46,303 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.6) internal successors, (24), 14 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 22 [2021-12-14 14:47:46,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:47:46,304 INFO L225 Difference]: With dead ends: 17 [2021-12-14 14:47:46,304 INFO L226 Difference]: Without dead ends: 0 [2021-12-14 14:47:46,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-12-14 14:47:46,306 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 15 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 14:47:46,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 51 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 14:47:46,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-14 14:47:46,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-14 14:47:46,307 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) [2021-12-14 14:47:46,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-14 14:47:46,307 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-12-14 14:47:46,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:47:46,308 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 14:47:46,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.6) internal successors, (24), 14 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-14 14:47:46,308 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-14 14:47:46,308 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-14 14:47:46,310 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-14 14:47:46,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 14:47:46,511 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 [2021-12-14 14:47:46,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-14 14:47:46,528 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-14 14:47:46,528 INFO L858 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2021-12-14 14:47:46,529 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-14 14:47:46,529 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-14 14:47:46,529 INFO L858 garLoopResultBuilder]: For program point L29(lines 29 33) no Hoare annotation was computed. [2021-12-14 14:47:46,529 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-14 14:47:46,529 INFO L861 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: true [2021-12-14 14:47:46,530 INFO L858 garLoopResultBuilder]: For program point L28-1(line 28) no Hoare annotation was computed. [2021-12-14 14:47:46,530 INFO L861 garLoopResultBuilder]: At program point L26(lines 26 34) the Hoare annotation is: true [2021-12-14 14:47:46,530 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 32) no Hoare annotation was computed. [2021-12-14 14:47:46,530 INFO L861 garLoopResultBuilder]: At program point f91ENTRY(lines 17 23) the Hoare annotation is: true [2021-12-14 14:47:46,530 INFO L858 garLoopResultBuilder]: For program point f91FINAL(lines 17 23) no Hoare annotation was computed. [2021-12-14 14:47:46,536 INFO L854 garLoopResultBuilder]: At program point L21(line 21) the Hoare annotation is: (and (<= f91_~x 100) (= f91_~x |f91_#in~x|)) [2021-12-14 14:47:46,536 INFO L858 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2021-12-14 14:47:46,536 INFO L854 garLoopResultBuilder]: At program point L21-2(line 21) the Hoare annotation is: (and (<= |f91_#t~ret4| 101) (<= f91_~x 100) (= f91_~x |f91_#in~x|)) [2021-12-14 14:47:46,536 INFO L858 garLoopResultBuilder]: For program point f91EXIT(lines 17 23) no Hoare annotation was computed. [2021-12-14 14:47:46,537 INFO L858 garLoopResultBuilder]: For program point L18(lines 18 22) no Hoare annotation was computed. [2021-12-14 14:47:46,537 INFO L858 garLoopResultBuilder]: For program point L21-3(line 21) no Hoare annotation was computed. [2021-12-14 14:47:46,540 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-14 14:47:46,543 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 14:47:46,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 02:47:46 BoogieIcfgContainer [2021-12-14 14:47:46,554 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 14:47:46,555 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 14:47:46,555 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 14:47:46,561 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 14:47:46,562 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:47:44" (3/4) ... [2021-12-14 14:47:46,565 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-14 14:47:46,572 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f91 [2021-12-14 14:47:46,579 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-12-14 14:47:46,579 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-14 14:47:46,580 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-14 14:47:46,580 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-14 14:47:46,640 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-14 14:47:46,646 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 14:47:46,647 INFO L158 Benchmark]: Toolchain (without parser) took 2765.57ms. Allocated memory was 88.1MB in the beginning and 151.0MB in the end (delta: 62.9MB). Free memory was 47.8MB in the beginning and 49.6MB in the end (delta: -1.8MB). Peak memory consumption was 60.7MB. Max. memory is 16.1GB. [2021-12-14 14:47:46,647 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 88.1MB. Free memory is still 63.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 14:47:46,647 INFO L158 Benchmark]: CACSL2BoogieTranslator took 330.06ms. Allocated memory is still 88.1MB. Free memory was 47.6MB in the beginning and 60.3MB in the end (delta: -12.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-14 14:47:46,647 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.86ms. Allocated memory is still 88.1MB. Free memory was 60.3MB in the beginning and 58.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 14:47:46,648 INFO L158 Benchmark]: Boogie Preprocessor took 11.70ms. Allocated memory is still 88.1MB. Free memory was 58.7MB in the beginning and 57.9MB in the end (delta: 813.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 14:47:46,648 INFO L158 Benchmark]: RCFGBuilder took 204.21ms. Allocated memory is still 88.1MB. Free memory was 57.9MB in the beginning and 49.3MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 14:47:46,648 INFO L158 Benchmark]: TraceAbstraction took 2085.89ms. Allocated memory was 88.1MB in the beginning and 151.0MB in the end (delta: 62.9MB). Free memory was 48.9MB in the beginning and 51.7MB in the end (delta: -2.8MB). Peak memory consumption was 63.2MB. Max. memory is 16.1GB. [2021-12-14 14:47:46,649 INFO L158 Benchmark]: Witness Printer took 91.15ms. Allocated memory is still 151.0MB. Free memory was 51.7MB in the beginning and 49.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 14:47:46,650 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 88.1MB. Free memory is still 63.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 330.06ms. Allocated memory is still 88.1MB. Free memory was 47.6MB in the beginning and 60.3MB in the end (delta: -12.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.86ms. Allocated memory is still 88.1MB. Free memory was 60.3MB in the beginning and 58.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.70ms. Allocated memory is still 88.1MB. Free memory was 58.7MB in the beginning and 57.9MB in the end (delta: 813.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 204.21ms. Allocated memory is still 88.1MB. Free memory was 57.9MB in the beginning and 49.3MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2085.89ms. Allocated memory was 88.1MB in the beginning and 151.0MB in the end (delta: 62.9MB). Free memory was 48.9MB in the beginning and 51.7MB in the end (delta: -2.8MB). Peak memory consumption was 63.2MB. Max. memory is 16.1GB. * Witness Printer took 91.15ms. Allocated memory is still 151.0MB. Free memory was 51.7MB in the beginning and 49.6MB 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: 32]: 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 2 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 2, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24 mSDsluCounter, 96 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 75 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 162 IncrementalHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 21 mSDtfsCounter, 162 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 11 PreInvPairs, 13 NumberOfFragments, 20 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 334 SizeOfPredicates, 5 NumberOfNonLiveVariables, 74 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 25/36 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: 26]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-12-14 14:47:46,681 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