./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-with-pointer/simple-recursive.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/recursive-with-pointer/simple-recursive.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 400754ae011c17d3326e3fdd997cfc3a510c1705 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 16:34:46,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 16:34:46,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 16:34:46,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 16:34:46,345 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 16:34:46,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 16:34:46,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 16:34:46,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 16:34:46,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 16:34:46,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 16:34:46,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 16:34:46,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 16:34:46,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 16:34:46,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 16:34:46,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 16:34:46,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 16:34:46,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 16:34:46,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 16:34:46,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 16:34:46,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 16:34:46,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 16:34:46,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 16:34:46,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 16:34:46,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 16:34:46,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 16:34:46,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 16:34:46,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 16:34:46,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 16:34:46,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 16:34:46,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 16:34:46,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 16:34:46,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 16:34:46,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 16:34:46,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 16:34:46,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 16:34:46,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 16:34:46,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 16:34:46,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 16:34:46,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 16:34:46,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 16:34:46,395 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 16:34:46,399 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 16:34:46,432 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 16:34:46,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 16:34:46,433 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 16:34:46,433 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 16:34:46,434 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 16:34:46,434 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 16:34:46,434 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 16:34:46,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 16:34:46,435 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 16:34:46,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 16:34:46,435 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 16:34:46,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 16:34:46,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 16:34:46,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 16:34:46,436 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 16:34:46,436 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 16:34:46,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 16:34:46,436 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 16:34:46,437 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 16:34:46,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 16:34:46,437 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 16:34:46,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 16:34:46,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 16:34:46,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 16:34:46,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 16:34:46,438 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 16:34:46,438 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 16:34:46,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 16:34:46,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 16:34:46,439 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 16:34:46,439 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 400754ae011c17d3326e3fdd997cfc3a510c1705 [2021-08-29 16:34:46,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 16:34:46,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 16:34:46,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 16:34:46,764 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 16:34:46,765 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 16:34:46,766 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-with-pointer/simple-recursive.c [2021-08-29 16:34:46,829 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fde9f4a8f/11dcf4a748d64ae5b104d3f1852364c5/FLAG8cdcbd162 [2021-08-29 16:34:47,271 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 16:34:47,272 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-with-pointer/simple-recursive.c [2021-08-29 16:34:47,279 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fde9f4a8f/11dcf4a748d64ae5b104d3f1852364c5/FLAG8cdcbd162 [2021-08-29 16:34:47,297 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fde9f4a8f/11dcf4a748d64ae5b104d3f1852364c5 [2021-08-29 16:34:47,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 16:34:47,302 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 16:34:47,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 16:34:47,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 16:34:47,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 16:34:47,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 04:34:47" (1/1) ... [2021-08-29 16:34:47,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55ba9bc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:34:47, skipping insertion in model container [2021-08-29 16:34:47,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 04:34:47" (1/1) ... [2021-08-29 16:34:47,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 16:34:47,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 16:34:47,418 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/recursive-with-pointer/simple-recursive.c[439,452] [2021-08-29 16:34:47,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 16:34:47,434 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 16:34:47,459 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/recursive-with-pointer/simple-recursive.c[439,452] [2021-08-29 16:34:47,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 16:34:47,483 INFO L208 MainTranslator]: Completed translation [2021-08-29 16:34:47,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:34:47 WrapperNode [2021-08-29 16:34:47,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 16:34:47,484 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 16:34:47,484 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 16:34:47,484 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 16:34:47,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:34:47" (1/1) ... [2021-08-29 16:34:47,494 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:34:47" (1/1) ... [2021-08-29 16:34:47,505 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 16:34:47,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 16:34:47,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 16:34:47,506 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 16:34:47,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:34:47" (1/1) ... [2021-08-29 16:34:47,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:34:47" (1/1) ... [2021-08-29 16:34:47,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:34:47" (1/1) ... [2021-08-29 16:34:47,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:34:47" (1/1) ... [2021-08-29 16:34:47,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:34:47" (1/1) ... [2021-08-29 16:34:47,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:34:47" (1/1) ... [2021-08-29 16:34:47,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:34:47" (1/1) ... [2021-08-29 16:34:47,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 16:34:47,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 16:34:47,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 16:34:47,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 16:34:47,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:34:47" (1/1) ... [2021-08-29 16:34:47,526 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 16:34:47,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 16:34:47,550 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 16:34:47,561 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 16:34:47,587 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-08-29 16:34:47,587 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-08-29 16:34:47,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 16:34:47,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 16:34:47,589 INFO L130 BoogieDeclarations]: Found specification of procedure plus [2021-08-29 16:34:47,589 INFO L138 BoogieDeclarations]: Found implementation of procedure plus [2021-08-29 16:34:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 16:34:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 16:34:47,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 16:34:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-29 16:34:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 16:34:47,751 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 16:34:47,751 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-29 16:34:47,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 04:34:47 BoogieIcfgContainer [2021-08-29 16:34:47,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 16:34:47,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 16:34:47,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 16:34:47,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 16:34:47,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 04:34:47" (1/3) ... [2021-08-29 16:34:47,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e8ee1a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 04:34:47, skipping insertion in model container [2021-08-29 16:34:47,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:34:47" (2/3) ... [2021-08-29 16:34:47,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e8ee1a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 04:34:47, skipping insertion in model container [2021-08-29 16:34:47,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 04:34:47" (3/3) ... [2021-08-29 16:34:47,761 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-recursive.c [2021-08-29 16:34:47,765 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 16:34:47,766 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 16:34:47,819 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 16:34:47,827 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 16:34:47,828 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 16:34:47,850 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-29 16:34:47,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-29 16:34:47,864 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 16:34:47,864 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-29 16:34:47,865 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting fooErr0ASSERT_VIOLATIONERROR_FUNCTION === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 16:34:47,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 16:34:47,870 INFO L82 PathProgramCache]: Analyzing trace with hash -694887038, now seen corresponding path program 1 times [2021-08-29 16:34:47,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 16:34:47,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216717993] [2021-08-29 16:34:47,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 16:34:47,880 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 16:34:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 16:34:48,166 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 16:34:48,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 16:34:48,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216717993] [2021-08-29 16:34:48,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216717993] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 16:34:48,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 16:34:48,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-29 16:34:48,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759471054] [2021-08-29 16:34:48,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 16:34:48,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 16:34:48,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 16:34:48,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 16:34:48,226 INFO L87 Difference]: Start difference. First operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:34:48,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 16:34:48,351 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2021-08-29 16:34:48,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 16:34:48,353 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-08-29 16:34:48,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 16:34:48,359 INFO L225 Difference]: With dead ends: 33 [2021-08-29 16:34:48,360 INFO L226 Difference]: Without dead ends: 14 [2021-08-29 16:34:48,363 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.16ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-29 16:34:48,369 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.40ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 88.51ms IncrementalHoareTripleChecker+Time [2021-08-29 16:34:48,371 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 21 Invalid, 62 Unknown, 0 Unchecked, 2.40ms Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 88.51ms Time] [2021-08-29 16:34:48,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-08-29 16:34:48,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-08-29 16:34:48,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:34:48,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-08-29 16:34:48,402 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2021-08-29 16:34:48,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 16:34:48,403 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-08-29 16:34:48,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:34:48,403 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-08-29 16:34:48,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-29 16:34:48,404 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 16:34:48,404 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 16:34:48,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 16:34:48,405 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting fooErr0ASSERT_VIOLATIONERROR_FUNCTION === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 16:34:48,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 16:34:48,407 INFO L82 PathProgramCache]: Analyzing trace with hash -2070363059, now seen corresponding path program 1 times [2021-08-29 16:34:48,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 16:34:48,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640382196] [2021-08-29 16:34:48,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 16:34:48,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 16:34:48,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 16:34:48,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 16:34:48,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 16:34:48,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640382196] [2021-08-29 16:34:48,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640382196] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 16:34:48,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139240570] [2021-08-29 16:34:48,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 16:34:48,573 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 16:34:48,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 16:34:48,575 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 16:34:48,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-29 16:34:48,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 16:34:48,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 41 conjunts are in the unsatisfiable core [2021-08-29 16:34:48,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 16:34:48,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-29 16:34:48,891 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-29 16:34:48,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2021-08-29 16:34:48,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 16:34:48,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 16:34:49,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 16:34:49,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139240570] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 16:34:49,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 16:34:49,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 24 [2021-08-29 16:34:49,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276794560] [2021-08-29 16:34:49,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-08-29 16:34:49,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 16:34:49,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-08-29 16:34:49,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2021-08-29 16:34:49,177 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 24 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 15 states have internal predecessors, (22), 9 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:34:49,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 16:34:49,429 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2021-08-29 16:34:49,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-29 16:34:49,430 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 15 states have internal predecessors, (22), 9 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-08-29 16:34:49,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 16:34:49,430 INFO L225 Difference]: With dead ends: 28 [2021-08-29 16:34:49,430 INFO L226 Difference]: Without dead ends: 24 [2021-08-29 16:34:49,431 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 374.39ms TimeCoverageRelationStatistics Valid=133, Invalid=797, Unknown=0, NotChecked=0, Total=930 [2021-08-29 16:34:49,432 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 100.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.94ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 121.68ms IncrementalHoareTripleChecker+Time [2021-08-29 16:34:49,432 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 8 Invalid, 197 Unknown, 0 Unchecked, 1.94ms Time], IncrementalHoareTripleChecker [12 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 121.68ms Time] [2021-08-29 16:34:49,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-08-29 16:34:49,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-08-29 16:34:49,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 7 states have call successors, (7), 7 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:34:49,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-08-29 16:34:49,437 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 12 [2021-08-29 16:34:49,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 16:34:49,437 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-08-29 16:34:49,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 15 states have internal predecessors, (22), 9 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:34:49,438 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-08-29 16:34:49,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-29 16:34:49,438 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 16:34:49,439 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-08-29 16:34:49,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-29 16:34:49,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 16:34:49,653 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting fooErr0ASSERT_VIOLATIONERROR_FUNCTION === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 16:34:49,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 16:34:49,654 INFO L82 PathProgramCache]: Analyzing trace with hash -978155155, now seen corresponding path program 2 times [2021-08-29 16:34:49,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 16:34:49,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525984636] [2021-08-29 16:34:49,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 16:34:49,654 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 16:34:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 16:34:49,863 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 16:34:49,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 16:34:49,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525984636] [2021-08-29 16:34:49,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525984636] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 16:34:49,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356547238] [2021-08-29 16:34:49,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-29 16:34:49,868 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 16:34:49,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 16:34:49,873 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 16:34:49,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-29 16:34:49,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-29 16:34:49,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 16:34:49,932 WARN L261 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 83 conjunts are in the unsatisfiable core [2021-08-29 16:34:49,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 16:34:49,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-29 16:34:50,038 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-29 16:34:50,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2021-08-29 16:34:50,172 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-29 16:34:50,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2021-08-29 16:34:50,301 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-29 16:34:50,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2021-08-29 16:34:50,403 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 16:34:50,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 16:34:50,981 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 16:34:50,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356547238] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 16:34:50,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 16:34:50,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 18] total 48 [2021-08-29 16:34:50,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73952512] [2021-08-29 16:34:50,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-08-29 16:34:50,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 16:34:50,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-08-29 16:34:50,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=2010, Unknown=0, NotChecked=0, Total=2256 [2021-08-29 16:34:50,984 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 48 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 27 states have internal predecessors, (40), 21 states have call successors, (21), 21 states have call predecessors, (21), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:34:51,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 16:34:51,613 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2021-08-29 16:34:51,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-29 16:34:51,614 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 27 states have internal predecessors, (40), 21 states have call successors, (21), 21 states have call predecessors, (21), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-08-29 16:34:51,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 16:34:51,615 INFO L225 Difference]: With dead ends: 48 [2021-08-29 16:34:51,615 INFO L226 Difference]: Without dead ends: 44 [2021-08-29 16:34:51,617 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1326 ImplicationChecksByTransitivity, 1119.65ms TimeCoverageRelationStatistics Valid=505, Invalid=3917, Unknown=0, NotChecked=0, Total=4422 [2021-08-29 16:34:51,618 INFO L928 BasicCegarLoop]: 8 mSDtfsCounter, 10 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 185.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.79ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 230.47ms IncrementalHoareTripleChecker+Time [2021-08-29 16:34:51,618 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 24 Invalid, 460 Unknown, 0 Unchecked, 3.79ms Time], IncrementalHoareTripleChecker [29 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 230.47ms Time] [2021-08-29 16:34:51,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-08-29 16:34:51,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2021-08-29 16:34:51,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 15 states have call successors, (15), 15 states have call predecessors, (15), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:34:51,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2021-08-29 16:34:51,625 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 22 [2021-08-29 16:34:51,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 16:34:51,626 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2021-08-29 16:34:51,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 27 states have internal predecessors, (40), 21 states have call successors, (21), 21 states have call predecessors, (21), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:34:51,626 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2021-08-29 16:34:51,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-08-29 16:34:51,627 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 16:34:51,627 INFO L513 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2021-08-29 16:34:51,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-29 16:34:51,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-08-29 16:34:51,841 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting fooErr0ASSERT_VIOLATIONERROR_FUNCTION === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 16:34:51,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 16:34:51,842 INFO L82 PathProgramCache]: Analyzing trace with hash -665560147, now seen corresponding path program 3 times [2021-08-29 16:34:51,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 16:34:51,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263103696] [2021-08-29 16:34:51,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 16:34:51,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 16:34:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 16:34:52,339 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 16:34:52,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 16:34:52,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263103696] [2021-08-29 16:34:52,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263103696] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 16:34:52,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073593652] [2021-08-29 16:34:52,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-29 16:34:52,341 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 16:34:52,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 16:34:52,342 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 16:34:52,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-29 16:34:52,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-29 16:34:52,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 16:34:52,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 32 conjunts are in the unsatisfiable core [2021-08-29 16:34:52,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 16:34:52,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-08-29 16:34:52,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-08-29 16:34:52,686 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-08-29 16:34:52,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 16:34:52,851 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-08-29 16:34:52,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073593652] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 16:34:52,852 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 16:34:52,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 9, 9] total 42 [2021-08-29 16:34:52,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378968347] [2021-08-29 16:34:52,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-08-29 16:34:52,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 16:34:52,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-08-29 16:34:52,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1510, Unknown=0, NotChecked=0, Total=1722 [2021-08-29 16:34:52,854 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand has 42 states, 32 states have (on average 1.28125) internal successors, (41), 25 states have internal predecessors, (41), 18 states have call successors, (20), 18 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:34:53,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 16:34:53,548 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2021-08-29 16:34:53,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-08-29 16:34:53,549 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 32 states have (on average 1.28125) internal successors, (41), 25 states have internal predecessors, (41), 18 states have call successors, (20), 18 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-08-29 16:34:53,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 16:34:53,549 INFO L225 Difference]: With dead ends: 50 [2021-08-29 16:34:53,549 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 16:34:53,551 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 1076.29ms TimeCoverageRelationStatistics Valid=683, Invalid=3873, Unknown=0, NotChecked=0, Total=4556 [2021-08-29 16:34:53,551 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 13 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 97.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.59ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 115.03ms IncrementalHoareTripleChecker+Time [2021-08-29 16:34:53,552 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 9 Invalid, 211 Unknown, 0 Unchecked, 1.59ms Time], IncrementalHoareTripleChecker [47 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 115.03ms Time] [2021-08-29 16:34:53,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 16:34:53,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 16:34:53,553 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 16:34:53,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 16:34:53,553 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2021-08-29 16:34:53,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 16:34:53,553 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 16:34:53,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 32 states have (on average 1.28125) internal successors, (41), 25 states have internal predecessors, (41), 18 states have call successors, (20), 18 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:34:53,553 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 16:34:53,555 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 16:34:53,557 INFO L764 garLoopResultBuilder]: Registering result SAFE for location fooErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 16:34:53,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-29 16:34:53,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 16:34:53,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 16:34:53,783 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:53,785 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:53,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:53,788 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:53,789 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:53,789 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:53,790 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:53,791 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:53,791 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:53,792 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:53,792 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:53,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:53,795 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:53,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:53,797 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:53,798 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:53,800 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:53,801 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:53,802 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:53,803 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:53,804 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:53,805 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:53,807 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:53,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:53,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:53,810 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:53,810 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:53,811 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:53,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:53,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:53,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:53,815 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:53,815 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:53,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:53,817 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:53,818 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:53,819 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 16:34:54,283 INFO L858 garLoopResultBuilder]: For program point fooEXIT(lines 11 20) no Hoare annotation was computed. [2021-08-29 16:34:54,285 INFO L854 garLoopResultBuilder]: At program point fooENTRY(lines 11 20) the Hoare annotation is: (let ((.cse4 (select |old(#memory_int)| |foo_#in~p.base|)) (.cse5 (select |#memory_int| |foo_#in~p.base|))) (let ((.cse3 (select .cse5 0)) (.cse2 (not (= |foo_#in~p.offset| 0))) (.cse1 (select .cse5 |foo_#in~p.offset|)) (.cse0 (select .cse4 |foo_#in~p.offset|))) (and (or (not (<= .cse0 17)) (<= .cse1 17)) (or (not (= .cse0 13)) .cse2 (= .cse1 13)) (or .cse2 (= .cse3 10) (not (= .cse0 10))) (or (not (<= .cse0 15)) (<= .cse1 15)) (or (not (= (select .cse4 0) 11)) .cse2 (= .cse3 11)) (or (= .cse1 12) (not (= .cse0 12)) .cse2) (or (not (<= .cse0 16)) (<= .cse1 16)) (or (not (< .cse0 21)) (< .cse1 21)) (or (<= .cse1 14) (not (<= .cse0 14)))))) [2021-08-29 16:34:54,285 INFO L858 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-08-29 16:34:54,285 INFO L858 garLoopResultBuilder]: For program point fooErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2021-08-29 16:34:54,286 INFO L858 garLoopResultBuilder]: For program point L14(lines 14 19) no Hoare annotation was computed. [2021-08-29 16:34:54,286 INFO L854 garLoopResultBuilder]: At program point L13(line 13) the Hoare annotation is: (let ((.cse7 (select |#memory_int| foo_~p.base)) (.cse6 (select |old(#memory_int)| |foo_#in~p.base|)) (.cse8 (select |#memory_int| |foo_#in~p.base|))) (let ((.cse5 (select .cse8 0)) (.cse4 (= foo_~p.offset 0)) (.cse3 (not (= |foo_#in~p.offset| 0))) (.cse0 (select .cse6 |foo_#in~p.offset|)) (.cse2 (select .cse7 foo_~p.offset)) (.cse1 (select .cse8 |foo_#in~p.offset|))) (and (or (not (< .cse0 21)) (and (< .cse1 21) (< .cse2 20))) (or .cse3 (and .cse4 (= .cse2 10) (= .cse5 10)) (not (= .cse0 10))) (or (not (<= .cse0 17)) (<= .cse1 17)) (or (not (= (select .cse6 0) 11)) .cse3 (and (= (select .cse7 0) 11) (= .cse5 11) .cse4)) (or (and (<= .cse2 16) (<= .cse1 16)) (not (<= .cse0 16))) (or (not (<= .cse0 14)) (and (<= .cse2 14) (<= .cse1 14))) (or (not (= .cse0 12)) (and (= .cse2 12) (= .cse1 12) .cse4) .cse3) (or (not (= .cse0 13)) .cse3 (and (<= .cse2 13) (= .cse1 13))) (or (not (<= .cse0 15)) (and (<= .cse2 15) (<= .cse1 15)))))) [2021-08-29 16:34:54,287 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 19) no Hoare annotation was computed. [2021-08-29 16:34:54,287 INFO L858 garLoopResultBuilder]: For program point L12-1(lines 11 20) no Hoare annotation was computed. [2021-08-29 16:34:54,287 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 16:34:54,288 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 16:34:54,288 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 16:34:54,288 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 16:34:54,288 INFO L854 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (= (select (select |#memory_int| ULTIMATE.start_main_~p~0.base) ULTIMATE.start_main_~p~0.offset) 10) (= ULTIMATE.start_main_~p~0.offset 0)) [2021-08-29 16:34:54,288 INFO L858 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2021-08-29 16:34:54,288 INFO L858 garLoopResultBuilder]: For program point L22(lines 22 28) no Hoare annotation was computed. [2021-08-29 16:34:54,288 INFO L858 garLoopResultBuilder]: For program point plusFINAL(lines 6 9) no Hoare annotation was computed. [2021-08-29 16:34:54,288 INFO L854 garLoopResultBuilder]: At program point plusENTRY(lines 6 9) the Hoare annotation is: (let ((.cse5 (select |old(#memory_int)| |plus_#in~p.base|)) (.cse4 (select |#memory_int| |plus_#in~p.base|))) (let ((.cse0 (select .cse4 |plus_#in~p.offset|)) (.cse1 (select .cse5 |plus_#in~p.offset|)) (.cse2 (not (= |plus_#in~p.offset| 0))) (.cse3 (select .cse5 0))) (and (or (< .cse0 20) (not (< .cse1 20))) (or (<= .cse0 16) (not (<= .cse1 16))) (or .cse2 (= .cse0 10) (not (= .cse3 10))) (or (not (<= .cse1 15)) (<= .cse0 15)) (or (not (<= .cse1 14)) (<= .cse0 14)) (or .cse2 (not (= .cse1 12)) (= .cse0 12)) (or (<= .cse0 13) (not (<= .cse1 13))) (or .cse2 (not (= .cse3 11)) (= (select .cse4 0) 11))))) [2021-08-29 16:34:54,288 INFO L858 garLoopResultBuilder]: For program point plusEXIT(lines 6 9) no Hoare annotation was computed. [2021-08-29 16:34:54,288 INFO L854 garLoopResultBuilder]: At program point L8(line 8) the Hoare annotation is: (let ((.cse6 (select |#memory_int| plus_~p.base)) (.cse7 (select |#memory_int| |plus_#in~p.base|)) (.cse8 (select |old(#memory_int)| |plus_#in~p.base|))) (let ((.cse5 (select .cse8 0)) (.cse1 (select .cse7 |plus_#in~p.offset|)) (.cse3 (= plus_~p.offset 0)) (.cse2 (select .cse6 plus_~p.offset)) (.cse4 (not (= |plus_#in~p.offset| 0))) (.cse0 (select .cse8 |plus_#in~p.offset|))) (and (or (not (<= .cse0 13)) (and (<= .cse1 14) (<= .cse2 14))) (or (and (<= .cse2 16) (<= .cse1 16)) (not (<= .cse0 15))) (or (< .cse2 21) (not (< .cse0 20))) (or (and .cse3 (= .cse1 12) (= .cse2 12)) .cse4 (not (= .cse5 11))) (or (and .cse3 (= (select .cse6 0) 11) (= (select .cse7 0) 11)) .cse4 (not (= .cse5 10))) (or (not (<= .cse0 16)) (and (< .cse1 20) (<= .cse2 17))) (or (not (<= .cse0 14)) (and (<= .cse1 15) (<= .cse2 15))) (or (and (<= .cse1 13) .cse3 (= .cse2 13)) .cse4 (not (= .cse0 12)))))) [2021-08-29 16:34:54,292 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 16:34:54,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 04:34:54 BoogieIcfgContainer [2021-08-29 16:34:54,295 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 16:34:54,296 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 16:34:54,296 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 16:34:54,296 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 16:34:54,296 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 04:34:47" (3/4) ... [2021-08-29 16:34:54,298 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 16:34:54,303 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure foo [2021-08-29 16:34:54,304 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure plus [2021-08-29 16:34:54,306 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-08-29 16:34:54,306 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-08-29 16:34:54,306 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-29 16:34:54,307 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 16:34:54,328 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 16:34:54,328 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 16:34:54,329 INFO L158 Benchmark]: Toolchain (without parser) took 7026.73ms. Allocated memory was 58.7MB in the beginning and 92.3MB in the end (delta: 33.6MB). Free memory was 37.0MB in the beginning and 52.8MB in the end (delta: -15.8MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2021-08-29 16:34:54,329 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 58.7MB. Free memory was 39.7MB in the beginning and 39.7MB in the end (delta: 28.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 16:34:54,329 INFO L158 Benchmark]: CACSL2BoogieTranslator took 180.15ms. Allocated memory is still 58.7MB. Free memory was 36.8MB in the beginning and 42.0MB in the end (delta: -5.1MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. [2021-08-29 16:34:54,330 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.80ms. Allocated memory is still 58.7MB. Free memory was 42.0MB in the beginning and 40.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 16:34:54,330 INFO L158 Benchmark]: Boogie Preprocessor took 14.24ms. Allocated memory is still 58.7MB. Free memory was 40.6MB in the beginning and 39.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 16:34:54,330 INFO L158 Benchmark]: RCFGBuilder took 232.85ms. Allocated memory is still 58.7MB. Free memory was 39.5MB in the beginning and 30.8MB in the end (delta: 8.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-08-29 16:34:54,330 INFO L158 Benchmark]: TraceAbstraction took 6540.60ms. Allocated memory was 58.7MB in the beginning and 92.3MB in the end (delta: 33.6MB). Free memory was 30.4MB in the beginning and 54.9MB in the end (delta: -24.5MB). Peak memory consumption was 39.0MB. Max. memory is 16.1GB. [2021-08-29 16:34:54,331 INFO L158 Benchmark]: Witness Printer took 32.98ms. Allocated memory is still 92.3MB. Free memory was 54.9MB in the beginning and 52.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 16:34:54,332 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 58.7MB. Free memory was 39.7MB in the beginning and 39.7MB in the end (delta: 28.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 180.15ms. Allocated memory is still 58.7MB. Free memory was 36.8MB in the beginning and 42.0MB in the end (delta: -5.1MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.80ms. Allocated memory is still 58.7MB. Free memory was 42.0MB in the beginning and 40.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 14.24ms. Allocated memory is still 58.7MB. Free memory was 40.6MB in the beginning and 39.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 232.85ms. Allocated memory is still 58.7MB. Free memory was 39.5MB in the beginning and 30.8MB in the end (delta: 8.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 6540.60ms. Allocated memory was 58.7MB in the beginning and 92.3MB in the end (delta: 33.6MB). Free memory was 30.4MB in the beginning and 54.9MB in the end (delta: -24.5MB). Peak memory consumption was 39.0MB. Max. memory is 16.1GB. * Witness Printer took 32.98ms. Allocated memory is still 92.3MB. Free memory was 54.9MB in the beginning and 52.8MB 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, 0.00ms 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: 18]: 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 3 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6475.42ms, OverallIterations: 4, TraceHistogramMax: 8, EmptinessCheckTime: 21.74ms, AutomataDifference: 1792.69ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 503.78ms, InitialAbstractionConstructionTime: 18.29ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 30 SdHoareTripleChecker+Valid, 555.70ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 30 mSDsluCounter, 62 SdHoareTripleChecker+Invalid, 450.90ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 140 mSDsCounter, 89 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 841 IncrementalHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 89 mSolverCounterUnsat, 22 mSDtfsCounter, 841 mSolverCounterSat, 9.73ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 263 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2336 ImplicationChecksByTransitivity, 2618.50ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=3, InterpolantAutomatonStates: 104, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 29.36ms AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 5 LocationsWithAnnotation, 37 PreInvPairs, 37 NumberOfFragments, 753 HoareAnnotationTreeSize, 37 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 36.81ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 907 FormulaSimplificationTreeSizeReductionInter, 458.66ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 73.10ms SsaConstructionTime, 180.85ms SatisfiabilityAnalysisTime, 2963.18ms InterpolantComputationTime, 159 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 225 ConstructedInterpolants, 0 QuantifiedInterpolants, 1353 SizeOfPredicates, 46 NumberOfNonLiveVariables, 369 ConjunctsInSsa, 156 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 236/426 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 RESULT: Ultimate proved your program to be correct! [2021-08-29 16:34:54,364 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...