./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test03.c --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/ldv-regression/test03.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 cc1db79cbb7cf9034f0ae20b98d8fad8f5708f55 ......................................................................................................................................................................................................................................................................................... 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 09:05:41,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 09:05:41,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 09:05:41,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 09:05:41,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 09:05:41,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 09:05:41,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 09:05:41,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 09:05:41,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 09:05:41,292 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 09:05:41,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 09:05:41,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 09:05:41,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 09:05:41,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 09:05:41,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 09:05:41,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 09:05:41,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 09:05:41,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 09:05:41,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 09:05:41,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 09:05:41,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 09:05:41,303 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 09:05:41,304 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 09:05:41,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 09:05:41,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 09:05:41,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 09:05:41,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 09:05:41,314 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 09:05:41,315 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 09:05:41,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 09:05:41,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 09:05:41,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 09:05:41,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 09:05:41,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 09:05:41,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 09:05:41,319 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 09:05:41,320 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 09:05:41,320 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 09:05:41,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 09:05:41,322 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 09:05:41,322 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 09:05:41,323 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 09:05:41,353 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 09:05:41,354 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 09:05:41,355 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 09:05:41,355 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 09:05:41,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 09:05:41,357 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 09:05:41,357 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 09:05:41,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 09:05:41,358 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 09:05:41,358 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 09:05:41,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 09:05:41,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 09:05:41,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 09:05:41,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 09:05:41,359 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 09:05:41,360 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 09:05:41,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 09:05:41,360 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 09:05:41,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 09:05:41,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 09:05:41,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 09:05:41,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 09:05:41,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 09:05:41,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 09:05:41,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 09:05:41,362 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 09:05:41,362 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 09:05:41,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 09:05:41,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 09:05:41,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 09:05:41,363 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc1db79cbb7cf9034f0ae20b98d8fad8f5708f55 [2021-08-29 09:05:41,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 09:05:41,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 09:05:41,716 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 09:05:41,718 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 09:05:41,721 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 09:05:41,722 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test03.c [2021-08-29 09:05:41,790 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98ee8b34c/b88d0c8351ed48f48798527f294fae20/FLAG3c05177e4 [2021-08-29 09:05:42,207 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 09:05:42,208 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test03.c [2021-08-29 09:05:42,213 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98ee8b34c/b88d0c8351ed48f48798527f294fae20/FLAG3c05177e4 [2021-08-29 09:05:42,621 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98ee8b34c/b88d0c8351ed48f48798527f294fae20 [2021-08-29 09:05:42,623 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 09:05:42,625 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 09:05:42,627 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 09:05:42,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 09:05:42,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 09:05:42,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:05:42" (1/1) ... [2021-08-29 09:05:42,631 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33905fbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:42, skipping insertion in model container [2021-08-29 09:05:42,631 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:05:42" (1/1) ... [2021-08-29 09:05:42,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 09:05:42,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 09:05:42,749 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/ldv-regression/test03.c[477,490] [2021-08-29 09:05:42,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 09:05:42,766 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 09:05:42,779 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/ldv-regression/test03.c[477,490] [2021-08-29 09:05:42,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 09:05:42,791 INFO L208 MainTranslator]: Completed translation [2021-08-29 09:05:42,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:42 WrapperNode [2021-08-29 09:05:42,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 09:05:42,794 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 09:05:42,795 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 09:05:42,795 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 09:05:42,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:42" (1/1) ... [2021-08-29 09:05:42,807 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:42" (1/1) ... [2021-08-29 09:05:42,852 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 09:05:42,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 09:05:42,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 09:05:42,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 09:05:42,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:42" (1/1) ... [2021-08-29 09:05:42,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:42" (1/1) ... [2021-08-29 09:05:42,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:42" (1/1) ... [2021-08-29 09:05:42,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:42" (1/1) ... [2021-08-29 09:05:42,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:42" (1/1) ... [2021-08-29 09:05:42,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:42" (1/1) ... [2021-08-29 09:05:42,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:42" (1/1) ... [2021-08-29 09:05:42,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 09:05:42,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 09:05:42,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 09:05:42,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 09:05:42,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:42" (1/1) ... [2021-08-29 09:05:42,899 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 09:05:42,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 09:05:42,917 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 09:05:42,944 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 09:05:42,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 09:05:42,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 09:05:42,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 09:05:42,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-29 09:05:42,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 09:05:42,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 09:05:42,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 09:05:43,139 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 09:05:43,140 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-08-29 09:05:43,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:05:43 BoogieIcfgContainer [2021-08-29 09:05:43,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 09:05:43,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 09:05:43,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 09:05:43,147 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 09:05:43,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 09:05:42" (1/3) ... [2021-08-29 09:05:43,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1240e157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:05:43, skipping insertion in model container [2021-08-29 09:05:43,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:05:42" (2/3) ... [2021-08-29 09:05:43,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1240e157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:05:43, skipping insertion in model container [2021-08-29 09:05:43,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:05:43" (3/3) ... [2021-08-29 09:05:43,150 INFO L111 eAbstractionObserver]: Analyzing ICFG test03.c [2021-08-29 09:05:43,154 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 09:05:43,155 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 09:05:43,202 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 09:05:43,211 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 09:05:43,211 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 09:05:43,222 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 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 09:05:43,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-29 09:05:43,231 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:05:43,231 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-29 09:05:43,232 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 09:05:43,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:05:43,239 INFO L82 PathProgramCache]: Analyzing trace with hash 28692805, now seen corresponding path program 1 times [2021-08-29 09:05:43,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:05:43,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165055205] [2021-08-29 09:05:43,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:05:43,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:05:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:05:43,502 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 09:05:43,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:05:43,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165055205] [2021-08-29 09:05:43,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165055205] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:05:43,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:05:43,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 09:05:43,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436419870] [2021-08-29 09:05:43,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 09:05:43,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:05:43,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 09:05:43,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 09:05:43,545 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 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 09:05:43,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:05:43,577 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2021-08-29 09:05:43,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 09:05:43,580 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 09:05:43,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:05:43,584 INFO L225 Difference]: With dead ends: 12 [2021-08-29 09:05:43,585 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 09:05:43,587 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.45ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 09:05:43,590 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.34ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.45ms IncrementalHoareTripleChecker+Time [2021-08-29 09:05:43,591 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 0 Invalid, 13 Unknown, 0 Unchecked, 0.34ms Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 14.45ms Time] [2021-08-29 09:05:43,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 09:05:43,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 09:05:43,610 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 09:05:43,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 09:05:43,611 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2021-08-29 09:05:43,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:05:43,611 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 09:05:43,611 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 09:05:43,612 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 09:05:43,612 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 09:05:43,614 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 09:05:43,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 09:05:43,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 09:05:43,619 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 09:05:43,621 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 09:05:43,622 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 09:05:43,628 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 09:05:43,628 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 09:05:43,629 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 09:05:43,629 INFO L854 garLoopResultBuilder]: At program point L29(lines 12 30) the Hoare annotation is: (= |ULTIMATE.start_f_#res| 0) [2021-08-29 09:05:43,629 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 09:05:43,630 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 28) no Hoare annotation was computed. [2021-08-29 09:05:43,630 INFO L854 garLoopResultBuilder]: At program point L23(lines 12 30) the Hoare annotation is: false [2021-08-29 09:05:43,630 INFO L858 garLoopResultBuilder]: For program point L22(lines 22 24) no Hoare annotation was computed. [2021-08-29 09:05:43,630 INFO L854 garLoopResultBuilder]: At program point L7(lines 6 8) the Hoare annotation is: (= |ULTIMATE.start_f_#res| 0) [2021-08-29 09:05:43,634 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 09:05:43,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 09:05:43 BoogieIcfgContainer [2021-08-29 09:05:43,646 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 09:05:43,647 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 09:05:43,647 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 09:05:43,647 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 09:05:43,648 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:05:43" (3/4) ... [2021-08-29 09:05:43,650 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 09:05:43,657 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-08-29 09:05:43,658 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-08-29 09:05:43,658 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 09:05:43,658 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 09:05:43,676 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \result == 0 [2021-08-29 09:05:43,676 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \result == 0 [2021-08-29 09:05:43,684 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 09:05:43,684 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 09:05:43,685 INFO L158 Benchmark]: Toolchain (without parser) took 1060.13ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 34.7MB in the beginning and 32.4MB in the end (delta: 2.4MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. [2021-08-29 09:05:43,686 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 56.6MB. Free memory was 38.0MB in the beginning and 38.0MB in the end (delta: 29.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 09:05:43,686 INFO L158 Benchmark]: CACSL2BoogieTranslator took 166.16ms. Allocated memory is still 56.6MB. Free memory was 34.5MB in the beginning and 24.9MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 09:05:43,686 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.99ms. Allocated memory is still 56.6MB. Free memory was 24.8MB in the beginning and 40.2MB in the end (delta: -15.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 09:05:43,687 INFO L158 Benchmark]: Boogie Preprocessor took 30.27ms. Allocated memory is still 56.6MB. Free memory was 40.2MB in the beginning and 39.3MB in the end (delta: 896.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 09:05:43,687 INFO L158 Benchmark]: RCFGBuilder took 249.65ms. Allocated memory is still 56.6MB. Free memory was 39.1MB in the beginning and 30.7MB in the end (delta: 8.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-08-29 09:05:43,688 INFO L158 Benchmark]: TraceAbstraction took 501.63ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 30.1MB in the beginning and 34.8MB in the end (delta: -4.7MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2021-08-29 09:05:43,688 INFO L158 Benchmark]: Witness Printer took 37.60ms. Allocated memory is still 69.2MB. Free memory was 34.8MB in the beginning and 32.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 09:05:43,691 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 56.6MB. Free memory was 38.0MB in the beginning and 38.0MB in the end (delta: 29.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 166.16ms. Allocated memory is still 56.6MB. Free memory was 34.5MB in the beginning and 24.9MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.99ms. Allocated memory is still 56.6MB. Free memory was 24.8MB in the beginning and 40.2MB in the end (delta: -15.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.27ms. Allocated memory is still 56.6MB. Free memory was 40.2MB in the beginning and 39.3MB in the end (delta: 896.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 249.65ms. Allocated memory is still 56.6MB. Free memory was 39.1MB in the beginning and 30.7MB in the end (delta: 8.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 501.63ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 30.1MB in the beginning and 34.8MB in the end (delta: -4.7MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * Witness Printer took 37.60ms. Allocated memory is still 69.2MB. Free memory was 34.8MB in the beginning and 32.4MB in the end (delta: 2.4MB). 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: 28]: 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, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 433.97ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 12.19ms, AutomataDifference: 69.08ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 13.37ms, InitialAbstractionConstructionTime: 7.80ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3 SdHoareTripleChecker+Valid, 14.45ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 11.98ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12 IncrementalHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 0 mSDtfsCounter, 12 mSolverCounterSat, 0.34ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.45ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 7.31ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 4 NumberOfFragments, 7 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 4.44ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 3.86ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 9.24ms SsaConstructionTime, 52.75ms SatisfiabilityAnalysisTime, 122.44ms InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: \result == 0 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: \result == 0 RESULT: Ultimate proved your program to be correct! [2021-08-29 09:05:43,726 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...