./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/for_infinite_loop_2.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/loops/for_infinite_loop_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 e54633c21138b76e0a20540e3354416071759709 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 10:25:49,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 10:25:49,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 10:25:49,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 10:25:49,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 10:25:49,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 10:25:49,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 10:25:49,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 10:25:49,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 10:25:49,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 10:25:49,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 10:25:49,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 10:25:49,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 10:25:49,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 10:25:49,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 10:25:49,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 10:25:49,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 10:25:49,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 10:25:49,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 10:25:49,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 10:25:49,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 10:25:49,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 10:25:49,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 10:25:49,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 10:25:49,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 10:25:49,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 10:25:49,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 10:25:49,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 10:25:49,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 10:25:49,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 10:25:49,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 10:25:49,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 10:25:49,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 10:25:49,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 10:25:49,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 10:25:49,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 10:25:49,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 10:25:49,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 10:25:49,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 10:25:49,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 10:25:49,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 10:25:49,062 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 10:25:49,078 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 10:25:49,078 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 10:25:49,078 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 10:25:49,078 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 10:25:49,079 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 10:25:49,079 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 10:25:49,079 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 10:25:49,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 10:25:49,080 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 10:25:49,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 10:25:49,080 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 10:25:49,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 10:25:49,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 10:25:49,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 10:25:49,080 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 10:25:49,080 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 10:25:49,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 10:25:49,081 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 10:25:49,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 10:25:49,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 10:25:49,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 10:25:49,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 10:25:49,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 10:25:49,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 10:25:49,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 10:25:49,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 10:25:49,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 10:25:49,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 10:25:49,082 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 10:25:49,082 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 10:25:49,082 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e54633c21138b76e0a20540e3354416071759709 [2021-08-29 10:25:49,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 10:25:49,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 10:25:49,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 10:25:49,385 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 10:25:49,385 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 10:25:49,386 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/for_infinite_loop_2.c [2021-08-29 10:25:49,448 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd8e982d8/57318af55b274abea453fe8ea5ce3dd7/FLAG424b6f4ae [2021-08-29 10:25:49,731 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 10:25:49,731 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/for_infinite_loop_2.c [2021-08-29 10:25:49,736 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd8e982d8/57318af55b274abea453fe8ea5ce3dd7/FLAG424b6f4ae [2021-08-29 10:25:50,206 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd8e982d8/57318af55b274abea453fe8ea5ce3dd7 [2021-08-29 10:25:50,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 10:25:50,210 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 10:25:50,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 10:25:50,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 10:25:50,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 10:25:50,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:25:50" (1/1) ... [2021-08-29 10:25:50,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29137dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:25:50, skipping insertion in model container [2021-08-29 10:25:50,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:25:50" (1/1) ... [2021-08-29 10:25:50,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 10:25:50,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 10:25:50,314 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/for_infinite_loop_2.c[418,431] [2021-08-29 10:25:50,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 10:25:50,333 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 10:25:50,341 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/for_infinite_loop_2.c[418,431] [2021-08-29 10:25:50,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 10:25:50,354 INFO L208 MainTranslator]: Completed translation [2021-08-29 10:25:50,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:25:50 WrapperNode [2021-08-29 10:25:50,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 10:25:50,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 10:25:50,357 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 10:25:50,358 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 10:25:50,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:25:50" (1/1) ... [2021-08-29 10:25:50,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:25:50" (1/1) ... [2021-08-29 10:25:50,413 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 10:25:50,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 10:25:50,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 10:25:50,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 10:25:50,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:25:50" (1/1) ... [2021-08-29 10:25:50,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:25:50" (1/1) ... [2021-08-29 10:25:50,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:25:50" (1/1) ... [2021-08-29 10:25:50,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:25:50" (1/1) ... [2021-08-29 10:25:50,426 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:25:50" (1/1) ... [2021-08-29 10:25:50,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:25:50" (1/1) ... [2021-08-29 10:25:50,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:25:50" (1/1) ... [2021-08-29 10:25:50,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 10:25:50,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 10:25:50,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 10:25:50,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 10:25:50,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:25:50" (1/1) ... [2021-08-29 10:25:50,446 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 10:25:50,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 10:25:50,494 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 10:25:50,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 10:25:50,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 10:25:50,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 10:25:50,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 10:25:50,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 10:25:50,682 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 10:25:50,682 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-08-29 10:25:50,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:25:50 BoogieIcfgContainer [2021-08-29 10:25:50,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 10:25:50,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 10:25:50,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 10:25:50,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 10:25:50,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:25:50" (1/3) ... [2021-08-29 10:25:50,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3246e211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:25:50, skipping insertion in model container [2021-08-29 10:25:50,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:25:50" (2/3) ... [2021-08-29 10:25:50,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3246e211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:25:50, skipping insertion in model container [2021-08-29 10:25:50,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:25:50" (3/3) ... [2021-08-29 10:25:50,688 INFO L111 eAbstractionObserver]: Analyzing ICFG for_infinite_loop_2.c [2021-08-29 10:25:50,691 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 10:25:50,691 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-29 10:25:50,740 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 10:25:50,746 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 10:25:50,746 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-29 10:25:50,777 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:25:50,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-29 10:25:50,781 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 10:25:50,782 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-29 10:25:50,782 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 10:25:50,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 10:25:50,788 INFO L82 PathProgramCache]: Analyzing trace with hash 889574253, now seen corresponding path program 1 times [2021-08-29 10:25:50,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 10:25:50,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811237334] [2021-08-29 10:25:50,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 10:25:50,795 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 10:25:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 10:25:51,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 10:25:51,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 10:25:51,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811237334] [2021-08-29 10:25:51,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811237334] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 10:25:51,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 10:25:51,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 10:25:51,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384724206] [2021-08-29 10:25:51,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 10:25:51,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 10:25:51,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 10:25:51,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 10:25:51,079 INFO L87 Difference]: Start difference. First operand has 15 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 14 states have internal predecessors, (19), 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 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:25:51,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 10:25:51,110 INFO L93 Difference]: Finished difference Result 22 states and 30 transitions. [2021-08-29 10:25:51,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 10:25:51,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2021-08-29 10:25:51,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 10:25:51,115 INFO L225 Difference]: With dead ends: 22 [2021-08-29 10:25:51,115 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 10:25:51,117 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.43ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 10:25:51,119 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.34ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.99ms IncrementalHoareTripleChecker+Time [2021-08-29 10:25:51,120 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 17 Unknown, 0 Unchecked, 0.34ms Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 14.99ms Time] [2021-08-29 10:25:51,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 10:25:51,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 10:25:51,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:25:51,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 10:25:51,134 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-08-29 10:25:51,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 10:25:51,135 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 10:25:51,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:25:51,135 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 10:25:51,135 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 10:25:51,138 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-08-29 10:25:51,138 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-08-29 10:25:51,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 10:25:51,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 10:25:51,142 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 10:25:51,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 10:25:51,146 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 10:25:51,153 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 10:25:51,154 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2021-08-29 10:25:51,154 INFO L854 garLoopResultBuilder]: At program point L23-2(lines 23 26) the Hoare annotation is: (= ULTIMATE.start_main_~x~0 0) [2021-08-29 10:25:51,154 INFO L858 garLoopResultBuilder]: For program point L23-3(lines 23 26) no Hoare annotation was computed. [2021-08-29 10:25:51,154 INFO L858 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2021-08-29 10:25:51,154 INFO L858 garLoopResultBuilder]: For program point L11-1(line 11) no Hoare annotation was computed. [2021-08-29 10:25:51,155 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 10:25:51,155 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 10:25:51,155 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 10:25:51,155 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2021-08-29 10:25:51,155 INFO L858 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2021-08-29 10:25:51,155 INFO L858 garLoopResultBuilder]: For program point L10(lines 10 12) no Hoare annotation was computed. [2021-08-29 10:25:51,156 INFO L854 garLoopResultBuilder]: At program point L10-2(lines 1 29) the Hoare annotation is: (and (= ULTIMATE.start_main_~x~0 0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-08-29 10:25:51,156 INFO L858 garLoopResultBuilder]: For program point L10-3(lines 10 12) no Hoare annotation was computed. [2021-08-29 10:25:51,156 INFO L854 garLoopResultBuilder]: At program point L10-5(lines 1 29) the Hoare annotation is: (= ULTIMATE.start_main_~x~0 0) [2021-08-29 10:25:51,159 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 10:25:51,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 10:25:51 BoogieIcfgContainer [2021-08-29 10:25:51,169 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 10:25:51,170 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 10:25:51,170 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 10:25:51,170 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 10:25:51,170 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:25:50" (3/4) ... [2021-08-29 10:25:51,172 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 10:25:51,178 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-08-29 10:25:51,178 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 10:25:51,178 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 10:25:51,178 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 10:25:51,205 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 10:25:51,205 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 10:25:51,206 INFO L158 Benchmark]: Toolchain (without parser) took 995.88ms. Allocated memory is still 79.7MB. Free memory was 63.1MB in the beginning and 61.0MB in the end (delta: 2.2MB). Peak memory consumption was 38.2MB. Max. memory is 16.1GB. [2021-08-29 10:25:51,206 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 79.7MB. Free memory is still 61.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 10:25:51,206 INFO L158 Benchmark]: CACSL2BoogieTranslator took 144.22ms. Allocated memory is still 79.7MB. Free memory was 63.1MB in the beginning and 53.6MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 10:25:51,207 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.94ms. Allocated memory is still 79.7MB. Free memory was 53.6MB in the beginning and 62.6MB in the end (delta: -8.9MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. [2021-08-29 10:25:51,207 INFO L158 Benchmark]: Boogie Preprocessor took 22.28ms. Allocated memory is still 79.7MB. Free memory was 62.6MB in the beginning and 61.7MB in the end (delta: 892.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 10:25:51,207 INFO L158 Benchmark]: RCFGBuilder took 246.60ms. Allocated memory is still 79.7MB. Free memory was 61.7MB in the beginning and 53.0MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 10:25:51,208 INFO L158 Benchmark]: TraceAbstraction took 484.86ms. Allocated memory is still 79.7MB. Free memory was 52.5MB in the beginning and 29.7MB in the end (delta: 22.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-08-29 10:25:51,208 INFO L158 Benchmark]: Witness Printer took 35.44ms. Allocated memory is still 79.7MB. Free memory was 29.7MB in the beginning and 61.0MB in the end (delta: -31.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 10:25:51,210 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 79.7MB. Free memory is still 61.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 144.22ms. Allocated memory is still 79.7MB. Free memory was 63.1MB in the beginning and 53.6MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.94ms. Allocated memory is still 79.7MB. Free memory was 53.6MB in the beginning and 62.6MB in the end (delta: -8.9MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.28ms. Allocated memory is still 79.7MB. Free memory was 62.6MB in the beginning and 61.7MB in the end (delta: 892.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 246.60ms. Allocated memory is still 79.7MB. Free memory was 61.7MB in the beginning and 53.0MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 484.86ms. Allocated memory is still 79.7MB. Free memory was 52.5MB in the beginning and 29.7MB in the end (delta: 22.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 35.44ms. Allocated memory is still 79.7MB. Free memory was 29.7MB in the beginning and 61.0MB in the end (delta: -31.3MB). Peak memory consumption was 4.2MB. 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: 11]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 11]: 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, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 419.74ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 21.52ms, AutomataDifference: 57.92ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 14.36ms, InitialAbstractionConstructionTime: 13.41ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8 SdHoareTripleChecker+Valid, 14.99ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 11.99ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17 IncrementalHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 17 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, 11.43ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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: 5.39ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 7 NumberOfFragments, 14 HoareAnnotationTreeSize, 3 FomulaSimplifications, 9 FormulaSimplificationTreeSizeReduction, 4.87ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 5.60ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 12.84ms SsaConstructionTime, 46.17ms SatisfiabilityAnalysisTime, 115.20ms InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 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 2 specifications checked. All of them hold - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: x == 0 && !(0 == cond) - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: x == 0 - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: x == 0 RESULT: Ultimate proved your program to be correct! [2021-08-29 10:25:51,249 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...