./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id2_b5_o10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5e4bed44-8a2c-4e62-bb29-e3eb3547c58c/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5e4bed44-8a2c-4e62-bb29-e3eb3547c58c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5e4bed44-8a2c-4e62-bb29-e3eb3547c58c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5e4bed44-8a2c-4e62-bb29-e3eb3547c58c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/id2_b5_o10.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5e4bed44-8a2c-4e62-bb29-e3eb3547c58c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5e4bed44-8a2c-4e62-bb29-e3eb3547c58c/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aea35f6fe28f2a249b678370b7d0543ee4b994af ...................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 17:07:26,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 17:07:26,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 17:07:26,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 17:07:26,424 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 17:07:26,425 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 17:07:26,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 17:07:26,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 17:07:26,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 17:07:26,431 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 17:07:26,432 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 17:07:26,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 17:07:26,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 17:07:26,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 17:07:26,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 17:07:26,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 17:07:26,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 17:07:26,437 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 17:07:26,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 17:07:26,441 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 17:07:26,443 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 17:07:26,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 17:07:26,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 17:07:26,446 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 17:07:26,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 17:07:26,449 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 17:07:26,449 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 17:07:26,450 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 17:07:26,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 17:07:26,451 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 17:07:26,452 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 17:07:26,453 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 17:07:26,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 17:07:26,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 17:07:26,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 17:07:26,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 17:07:26,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 17:07:26,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 17:07:26,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 17:07:26,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 17:07:26,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 17:07:26,458 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5e4bed44-8a2c-4e62-bb29-e3eb3547c58c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 17:07:26,476 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 17:07:26,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 17:07:26,476 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 17:07:26,477 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 17:07:26,477 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 17:07:26,477 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 17:07:26,477 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 17:07:26,477 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 17:07:26,477 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 17:07:26,477 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 17:07:26,477 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 17:07:26,478 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 17:07:26,478 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 17:07:26,478 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 17:07:26,478 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 17:07:26,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 17:07:26,479 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 17:07:26,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 17:07:26,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 17:07:26,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 17:07:26,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 17:07:26,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 17:07:26,479 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 17:07:26,479 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 17:07:26,479 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 17:07:26,480 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 17:07:26,480 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 17:07:26,480 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 17:07:26,480 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 17:07:26,480 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 17:07:26,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 17:07:26,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 17:07:26,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 17:07:26,481 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 17:07:26,481 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 17:07:26,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 17:07:26,481 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 17:07:26,481 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 17:07:26,481 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 17:07:26,481 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_5e4bed44-8a2c-4e62-bb29-e3eb3547c58c/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5e4bed44-8a2c-4e62-bb29-e3eb3547c58c/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aea35f6fe28f2a249b678370b7d0543ee4b994af [2020-12-09 17:07:26,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 17:07:26,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 17:07:26,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 17:07:26,708 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 17:07:26,708 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 17:07:26,709 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5e4bed44-8a2c-4e62-bb29-e3eb3547c58c/bin/utaipan/../../sv-benchmarks/c/recursive-simple/id2_b5_o10.c [2020-12-09 17:07:26,750 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5e4bed44-8a2c-4e62-bb29-e3eb3547c58c/bin/utaipan/data/6883c423a/bae28aaec9634c11a9cd9cb4a4125818/FLAG98e9a233a [2020-12-09 17:07:27,096 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 17:07:27,096 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5e4bed44-8a2c-4e62-bb29-e3eb3547c58c/sv-benchmarks/c/recursive-simple/id2_b5_o10.c [2020-12-09 17:07:27,101 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5e4bed44-8a2c-4e62-bb29-e3eb3547c58c/bin/utaipan/data/6883c423a/bae28aaec9634c11a9cd9cb4a4125818/FLAG98e9a233a [2020-12-09 17:07:27,110 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5e4bed44-8a2c-4e62-bb29-e3eb3547c58c/bin/utaipan/data/6883c423a/bae28aaec9634c11a9cd9cb4a4125818 [2020-12-09 17:07:27,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 17:07:27,113 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 17:07:27,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 17:07:27,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 17:07:27,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 17:07:27,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:07:27" (1/1) ... [2020-12-09 17:07:27,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60428700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:07:27, skipping insertion in model container [2020-12-09 17:07:27,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:07:27" (1/1) ... [2020-12-09 17:07:27,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 17:07:27,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 17:07:27,262 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_5e4bed44-8a2c-4e62-bb29-e3eb3547c58c/sv-benchmarks/c/recursive-simple/id2_b5_o10.c[773,786] [2020-12-09 17:07:27,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 17:07:27,272 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 17:07:27,284 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_5e4bed44-8a2c-4e62-bb29-e3eb3547c58c/sv-benchmarks/c/recursive-simple/id2_b5_o10.c[773,786] [2020-12-09 17:07:27,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 17:07:27,295 INFO L208 MainTranslator]: Completed translation [2020-12-09 17:07:27,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:07:27 WrapperNode [2020-12-09 17:07:27,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 17:07:27,296 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 17:07:27,296 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 17:07:27,296 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 17:07:27,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:07:27" (1/1) ... [2020-12-09 17:07:27,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:07:27" (1/1) ... [2020-12-09 17:07:27,317 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 17:07:27,317 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 17:07:27,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 17:07:27,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 17:07:27,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:07:27" (1/1) ... [2020-12-09 17:07:27,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:07:27" (1/1) ... [2020-12-09 17:07:27,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:07:27" (1/1) ... [2020-12-09 17:07:27,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:07:27" (1/1) ... [2020-12-09 17:07:27,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:07:27" (1/1) ... [2020-12-09 17:07:27,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:07:27" (1/1) ... [2020-12-09 17:07:27,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:07:27" (1/1) ... [2020-12-09 17:07:27,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 17:07:27,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 17:07:27,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 17:07:27,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 17:07:27,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:07:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e4bed44-8a2c-4e62-bb29-e3eb3547c58c/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 17:07:27,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 17:07:27,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 17:07:27,397 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2020-12-09 17:07:27,397 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2020-12-09 17:07:27,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 17:07:27,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 17:07:27,397 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-12-09 17:07:27,397 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-12-09 17:07:27,601 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 17:07:27,601 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-09 17:07:27,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:07:27 BoogieIcfgContainer [2020-12-09 17:07:27,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 17:07:27,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 17:07:27,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 17:07:27,608 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 17:07:27,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:07:27" (1/3) ... [2020-12-09 17:07:27,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@240def4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:07:27, skipping insertion in model container [2020-12-09 17:07:27,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:07:27" (2/3) ... [2020-12-09 17:07:27,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@240def4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:07:27, skipping insertion in model container [2020-12-09 17:07:27,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:07:27" (3/3) ... [2020-12-09 17:07:27,611 INFO L111 eAbstractionObserver]: Analyzing ICFG id2_b5_o10.c [2020-12-09 17:07:27,624 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 17:07:27,626 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 17:07:27,635 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 17:07:27,652 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 17:07:27,652 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 17:07:27,652 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 17:07:27,653 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 17:07:27,653 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 17:07:27,653 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 17:07:27,653 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 17:07:27,653 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 17:07:27,664 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-12-09 17:07:27,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 17:07:27,667 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:07:27,668 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:07:27,668 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:07:27,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:07:27,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1546332850, now seen corresponding path program 1 times [2020-12-09 17:07:27,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:07:27,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421298826] [2020-12-09 17:07:27,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:07:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:07:27,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:07:27,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421298826] [2020-12-09 17:07:27,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:07:27,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 17:07:27,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040046970] [2020-12-09 17:07:27,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 17:07:27,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:07:27,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 17:07:27,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 17:07:27,852 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2020-12-09 17:07:27,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:07:27,885 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-12-09 17:07:27,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 17:07:27,886 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-09 17:07:27,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:07:27,892 INFO L225 Difference]: With dead ends: 30 [2020-12-09 17:07:27,892 INFO L226 Difference]: Without dead ends: 20 [2020-12-09 17:07:27,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 17:07:27,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-09 17:07:27,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-12-09 17:07:27,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-09 17:07:27,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-12-09 17:07:27,921 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 9 [2020-12-09 17:07:27,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:07:27,922 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-12-09 17:07:27,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 17:07:27,922 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-12-09 17:07:27,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 17:07:27,923 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:07:27,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:07:27,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 17:07:27,923 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:07:27,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:07:27,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1838329717, now seen corresponding path program 1 times [2020-12-09 17:07:27,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:07:27,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723413212] [2020-12-09 17:07:27,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:07:27,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:07:28,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:07:28,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723413212] [2020-12-09 17:07:28,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:07:28,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 17:07:28,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889554588] [2020-12-09 17:07:28,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 17:07:28,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:07:28,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 17:07:28,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-09 17:07:28,016 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 7 states. [2020-12-09 17:07:28,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:07:28,043 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2020-12-09 17:07:28,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 17:07:28,044 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-12-09 17:07:28,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:07:28,045 INFO L225 Difference]: With dead ends: 29 [2020-12-09 17:07:28,045 INFO L226 Difference]: Without dead ends: 25 [2020-12-09 17:07:28,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-09 17:07:28,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-09 17:07:28,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-12-09 17:07:28,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 17:07:28,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-12-09 17:07:28,051 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2020-12-09 17:07:28,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:07:28,052 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-12-09 17:07:28,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 17:07:28,052 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-12-09 17:07:28,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 17:07:28,053 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:07:28,053 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:07:28,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 17:07:28,053 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:07:28,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:07:28,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1146716592, now seen corresponding path program 1 times [2020-12-09 17:07:28,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:07:28,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082634434] [2020-12-09 17:07:28,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:07:28,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:07:28,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 17:07:28,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082634434] [2020-12-09 17:07:28,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208503480] [2020-12-09 17:07:28,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e4bed44-8a2c-4e62-bb29-e3eb3547c58c/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:07:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:07:28,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 17:07:28,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:07:28,297 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 17:07:28,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:07:28,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 17:07:28,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 17:07:28,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [9] total 15 [2020-12-09 17:07:28,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024553034] [2020-12-09 17:07:28,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 17:07:28,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:07:28,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 17:07:28,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-12-09 17:07:28,438 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 8 states. [2020-12-09 17:07:28,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:07:28,451 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2020-12-09 17:07:28,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 17:07:28,452 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-12-09 17:07:28,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:07:28,452 INFO L225 Difference]: With dead ends: 23 [2020-12-09 17:07:28,452 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 17:07:28,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-12-09 17:07:28,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 17:07:28,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 17:07:28,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 17:07:28,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 17:07:28,453 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-12-09 17:07:28,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:07:28,453 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 17:07:28,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 17:07:28,454 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 17:07:28,454 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 17:07:28,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-09 17:07:28,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 17:07:28,706 INFO L262 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-12-09 17:07:28,707 INFO L262 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-12-09 17:07:28,707 INFO L262 CegarLoopResult]: For program point id2EXIT(lines 16 21) no Hoare annotation was computed. [2020-12-09 17:07:28,707 INFO L265 CegarLoopResult]: At program point id2ENTRY(lines 16 21) the Hoare annotation is: true [2020-12-09 17:07:28,708 INFO L262 CegarLoopResult]: For program point id2FINAL(lines 16 21) no Hoare annotation was computed. [2020-12-09 17:07:28,708 INFO L265 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: true [2020-12-09 17:07:28,708 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 17:07:28,709 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 17:07:28,709 INFO L262 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-12-09 17:07:28,709 INFO L262 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2020-12-09 17:07:28,710 INFO L265 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: true [2020-12-09 17:07:28,710 INFO L262 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-12-09 17:07:28,710 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 27) no Hoare annotation was computed. [2020-12-09 17:07:28,711 INFO L262 CegarLoopResult]: For program point L23(lines 23 29) no Hoare annotation was computed. [2020-12-09 17:07:28,711 INFO L262 CegarLoopResult]: For program point idFINAL(lines 9 14) no Hoare annotation was computed. [2020-12-09 17:07:28,711 INFO L265 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: true [2020-12-09 17:07:28,712 INFO L262 CegarLoopResult]: For program point idEXIT(lines 9 14) no Hoare annotation was computed. [2020-12-09 17:07:28,712 INFO L262 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-12-09 17:07:28,712 INFO L262 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-12-09 17:07:28,713 INFO L265 CegarLoopResult]: At program point idENTRY(lines 9 14) the Hoare annotation is: true [2020-12-09 17:07:28,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:07:28 BoogieIcfgContainer [2020-12-09 17:07:28,725 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 17:07:28,727 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 17:07:28,727 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 17:07:28,728 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 17:07:28,729 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:07:27" (3/4) ... [2020-12-09 17:07:28,737 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 17:07:28,750 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id2 [2020-12-09 17:07:28,751 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2020-12-09 17:07:28,763 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-12-09 17:07:28,763 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 17:07:28,764 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 17:07:28,765 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 17:07:28,827 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5e4bed44-8a2c-4e62-bb29-e3eb3547c58c/bin/utaipan/witness.graphml [2020-12-09 17:07:28,827 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 17:07:28,829 INFO L168 Benchmark]: Toolchain (without parser) took 1714.84 ms. Allocated memory was 102.8 MB in the beginning and 127.9 MB in the end (delta: 25.2 MB). Free memory was 62.9 MB in the beginning and 80.7 MB in the end (delta: -17.8 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-12-09 17:07:28,829 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 102.8 MB. Free memory was 79.0 MB in the beginning and 78.9 MB in the end (delta: 136.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 17:07:28,830 INFO L168 Benchmark]: CACSL2BoogieTranslator took 181.31 ms. Allocated memory is still 102.8 MB. Free memory was 62.8 MB in the beginning and 79.3 MB in the end (delta: -16.5 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2020-12-09 17:07:28,830 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.01 ms. Allocated memory is still 102.8 MB. Free memory was 79.3 MB in the beginning and 78.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 17:07:28,831 INFO L168 Benchmark]: Boogie Preprocessor took 12.31 ms. Allocated memory is still 102.8 MB. Free memory was 78.0 MB in the beginning and 77.0 MB in the end (delta: 962.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 17:07:28,831 INFO L168 Benchmark]: RCFGBuilder took 272.94 ms. Allocated memory is still 102.8 MB. Free memory was 77.0 MB in the beginning and 73.4 MB in the end (delta: 3.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 17:07:28,832 INFO L168 Benchmark]: TraceAbstraction took 1120.91 ms. Allocated memory was 102.8 MB in the beginning and 127.9 MB in the end (delta: 25.2 MB). Free memory was 73.0 MB in the beginning and 82.8 MB in the end (delta: -9.8 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. [2020-12-09 17:07:28,832 INFO L168 Benchmark]: Witness Printer took 100.25 ms. Allocated memory is still 127.9 MB. Free memory was 82.8 MB in the beginning and 80.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 17:07:28,835 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 102.8 MB. Free memory was 79.0 MB in the beginning and 78.9 MB in the end (delta: 136.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 181.31 ms. Allocated memory is still 102.8 MB. Free memory was 62.8 MB in the beginning and 79.3 MB in the end (delta: -16.5 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 21.01 ms. Allocated memory is still 102.8 MB. Free memory was 79.3 MB in the beginning and 78.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 12.31 ms. Allocated memory is still 102.8 MB. Free memory was 78.0 MB in the beginning and 77.0 MB in the end (delta: 962.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 272.94 ms. Allocated memory is still 102.8 MB. Free memory was 77.0 MB in the beginning and 73.4 MB in the end (delta: 3.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1120.91 ms. Allocated memory was 102.8 MB in the beginning and 127.9 MB in the end (delta: 25.2 MB). Free memory was 73.0 MB in the beginning and 82.8 MB in the end (delta: -9.8 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. * Witness Printer took 100.25 ms. Allocated memory is still 127.9 MB. Free memory was 82.8 MB in the beginning and 80.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 27]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 57 SDtfs, 2 SDslu, 238 SDs, 0 SdLazy, 38 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 5 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 3760 SizeOfPredicates, 1 NumberOfNonLiveVariables, 75 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 10/12 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...