./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/css2003.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a8b4c8-1bfc-4e63-9e99-8c1290cb31ed/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a8b4c8-1bfc-4e63-9e99-8c1290cb31ed/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a8b4c8-1bfc-4e63-9e99-8c1290cb31ed/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a8b4c8-1bfc-4e63-9e99-8c1290cb31ed/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/css2003.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a8b4c8-1bfc-4e63-9e99-8c1290cb31ed/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a8b4c8-1bfc-4e63-9e99-8c1290cb31ed/bin/utaipan-WLngWcDbfI --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 f86f1d97a8eea81a810b00eedf9f945dcb9155ec ................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:21:26,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:21:26,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:21:26,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:21:26,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:21:26,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:21:26,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:21:26,945 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:21:26,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:21:26,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:21:26,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:21:26,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:21:26,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:21:26,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:21:26,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:21:26,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:21:26,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:21:26,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:21:26,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:21:26,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:21:26,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:21:26,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:21:26,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:21:26,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:21:26,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:21:26,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:21:26,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:21:26,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:21:26,978 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:21:26,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:21:26,980 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:21:26,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:21:26,983 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:21:26,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:21:26,985 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:21:26,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:21:26,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:21:26,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:21:26,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:21:26,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:21:26,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:21:26,992 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a8b4c8-1bfc-4e63-9e99-8c1290cb31ed/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:21:27,020 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:21:27,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:21:27,021 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:21:27,022 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:21:27,022 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:21:27,022 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:21:27,023 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:21:27,023 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:21:27,023 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:21:27,024 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:21:27,024 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:21:27,025 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:21:27,025 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:21:27,025 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:21:27,026 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:21:27,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:21:27,027 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:21:27,028 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:21:27,028 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:21:27,028 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:21:27,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:21:27,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:21:27,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:21:27,030 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:21:27,030 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:21:27,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:21:27,031 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:21:27,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:21:27,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:21:27,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:21:27,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:27,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:21:27,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:21:27,033 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:21:27,034 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:21:27,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:21:27,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:21:27,035 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:21:27,035 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:21:27,035 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_worker_vcloud-master_on_vcloud-master/run_dir_f6a8b4c8-1bfc-4e63-9e99-8c1290cb31ed/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a8b4c8-1bfc-4e63-9e99-8c1290cb31ed/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f86f1d97a8eea81a810b00eedf9f945dcb9155ec [2021-10-11 02:21:27,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:21:27,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:21:27,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:21:27,312 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:21:27,312 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:21:27,313 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a8b4c8-1bfc-4e63-9e99-8c1290cb31ed/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/loop-lit/css2003.i [2021-10-11 02:21:27,388 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a8b4c8-1bfc-4e63-9e99-8c1290cb31ed/bin/utaipan-WLngWcDbfI/data/74b4dd4da/8b69f7152709428b94a2a34e24b0760c/FLAG6cccd29c3 [2021-10-11 02:21:27,902 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:21:27,902 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a8b4c8-1bfc-4e63-9e99-8c1290cb31ed/sv-benchmarks/c/loop-lit/css2003.i [2021-10-11 02:21:27,912 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a8b4c8-1bfc-4e63-9e99-8c1290cb31ed/bin/utaipan-WLngWcDbfI/data/74b4dd4da/8b69f7152709428b94a2a34e24b0760c/FLAG6cccd29c3 [2021-10-11 02:21:28,282 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a8b4c8-1bfc-4e63-9e99-8c1290cb31ed/bin/utaipan-WLngWcDbfI/data/74b4dd4da/8b69f7152709428b94a2a34e24b0760c [2021-10-11 02:21:28,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:21:28,288 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:21:28,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:28,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:21:28,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:21:28,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:28" (1/1) ... [2021-10-11 02:21:28,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ccb8001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:28, skipping insertion in model container [2021-10-11 02:21:28,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:28" (1/1) ... [2021-10-11 02:21:28,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:21:28,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:21:28,551 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a8b4c8-1bfc-4e63-9e99-8c1290cb31ed/sv-benchmarks/c/loop-lit/css2003.i[895,908] [2021-10-11 02:21:28,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:28,576 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:21:28,589 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a8b4c8-1bfc-4e63-9e99-8c1290cb31ed/sv-benchmarks/c/loop-lit/css2003.i[895,908] [2021-10-11 02:21:28,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:28,606 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:21:28,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:28 WrapperNode [2021-10-11 02:21:28,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:28,608 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:28,609 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:21:28,609 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:21:28,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:28" (1/1) ... [2021-10-11 02:21:28,623 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:28" (1/1) ... [2021-10-11 02:21:28,638 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:28,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:21:28,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:21:28,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:21:28,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:28" (1/1) ... [2021-10-11 02:21:28,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:28" (1/1) ... [2021-10-11 02:21:28,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:28" (1/1) ... [2021-10-11 02:21:28,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:28" (1/1) ... [2021-10-11 02:21:28,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:28" (1/1) ... [2021-10-11 02:21:28,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:28" (1/1) ... [2021-10-11 02:21:28,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:28" (1/1) ... [2021-10-11 02:21:28,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:21:28,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:21:28,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:21:28,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:21:28,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:28" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a8b4c8-1bfc-4e63-9e99-8c1290cb31ed/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:21:28,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:21:28,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:21:28,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:21:28,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:21:29,070 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:21:29,071 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:21:29,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:29 BoogieIcfgContainer [2021-10-11 02:21:29,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:21:29,074 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:21:29,074 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:21:29,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:21:29,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:21:28" (1/3) ... [2021-10-11 02:21:29,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17068658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:29, skipping insertion in model container [2021-10-11 02:21:29,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:28" (2/3) ... [2021-10-11 02:21:29,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17068658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:29, skipping insertion in model container [2021-10-11 02:21:29,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:29" (3/3) ... [2021-10-11 02:21:29,081 INFO L111 eAbstractionObserver]: Analyzing ICFG css2003.i [2021-10-11 02:21:29,110 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:21:29,113 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:21:29,137 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:21:29,175 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:21:29,176 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:21:29,176 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:21:29,176 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:21:29,176 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:21:29,176 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:21:29,176 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:21:29,176 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:21:29,204 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2021-10-11 02:21:29,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:21:29,208 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:29,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:21:29,209 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:29,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:29,215 INFO L82 PathProgramCache]: Analyzing trace with hash 60253388, now seen corresponding path program 1 times [2021-10-11 02:21:29,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:29,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832073445] [2021-10-11 02:21:29,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:29,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:29,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832073445] [2021-10-11 02:21:29,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:29,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:21:29,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114275975] [2021-10-11 02:21:29,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:21:29,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:29,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:21:29,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:21:29,558 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 5 states. [2021-10-11 02:21:29,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:29,621 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2021-10-11 02:21:29,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:21:29,623 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2021-10-11 02:21:29,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:29,637 INFO L225 Difference]: With dead ends: 18 [2021-10-11 02:21:29,638 INFO L226 Difference]: Without dead ends: 8 [2021-10-11 02:21:29,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:21:29,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-11 02:21:29,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-11 02:21:29,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-11 02:21:29,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-11 02:21:29,673 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2021-10-11 02:21:29,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:29,673 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-11 02:21:29,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:21:29,673 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-11 02:21:29,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:21:29,674 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:29,674 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-10-11 02:21:29,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:21:29,675 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:29,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:29,679 INFO L82 PathProgramCache]: Analyzing trace with hash 2069075780, now seen corresponding path program 1 times [2021-10-11 02:21:29,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:29,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708221229] [2021-10-11 02:21:29,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:29,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:29,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:29,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708221229] [2021-10-11 02:21:29,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406695409] [2021-10-11 02:21:29,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a8b4c8-1bfc-4e63-9e99-8c1290cb31ed/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:21:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:29,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-11 02:21:29,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:30,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:30,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:21:30,167 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:21:30,273 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 4, 3, 1] term [2021-10-11 02:21:30,273 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:21:30,278 INFO L639 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2021-10-11 02:21:30,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:30,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1858871417] [2021-10-11 02:21:30,306 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-11 02:21:30,306 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:21:30,310 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:21:30,315 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:21:30,316 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:21:30,785 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:21:31,028 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2021-10-11 02:21:31,350 WARN L197 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 64 [2021-10-11 02:21:31,457 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:21:31,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:21:31,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 12 [2021-10-11 02:21:31,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108895713] [2021-10-11 02:21:31,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-10-11 02:21:31,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:31,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-11 02:21:31,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-10-11 02:21:31,461 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 12 states. [2021-10-11 02:21:31,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:31,544 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2021-10-11 02:21:31,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:21:31,544 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 7 [2021-10-11 02:21:31,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:31,545 INFO L225 Difference]: With dead ends: 9 [2021-10-11 02:21:31,545 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:21:31,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-10-11 02:21:31,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:21:31,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:21:31,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:21:31,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:21:31,548 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-10-11 02:21:31,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:31,548 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:21:31,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-10-11 02:21:31,548 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:21:31,549 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:21:31,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-11 02:21:31,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:21:31,853 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:21:31,853 INFO L262 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2021-10-11 02:21:31,853 INFO L262 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-11 02:21:31,853 INFO L258 CegarLoopResult]: At program point L36(lines 24 37) the Hoare annotation is: (or (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~i~0 1)) [2021-10-11 02:21:31,854 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:21:31,854 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:21:31,854 INFO L262 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:21:31,854 INFO L258 CegarLoopResult]: At program point L18-2(lines 17 35) the Hoare annotation is: (or (let ((.cse0 (+ ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~k~0))) (and (<= .cse0 2) (<= 1 .cse0) (<= 2 ULTIMATE.start_main_~i~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (and (= ULTIMATE.start_main_~i~0 1) (<= 0 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~k~0 1))) [2021-10-11 02:21:31,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:21:31 BoogieIcfgContainer [2021-10-11 02:21:31,870 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:21:31,870 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:21:31,871 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:21:31,871 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:21:31,871 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:29" (3/4) ... [2021-10-11 02:21:31,874 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:21:31,882 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:21:31,883 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-11 02:21:31,883 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:21:31,883 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:21:31,917 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a8b4c8-1bfc-4e63-9e99-8c1290cb31ed/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:21:31,917 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:21:31,918 INFO L168 Benchmark]: Toolchain (without parser) took 3629.89 ms. Allocated memory was 102.8 MB in the beginning and 157.3 MB in the end (delta: 54.5 MB). Free memory was 70.3 MB in the beginning and 126.1 MB in the end (delta: -55.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:31,919 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 102.8 MB. Free memory was 56.6 MB in the beginning and 56.5 MB in the end (delta: 41.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:31,919 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.33 ms. Allocated memory is still 102.8 MB. Free memory was 70.1 MB in the beginning and 78.6 MB in the end (delta: -8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:31,920 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.39 ms. Allocated memory is still 102.8 MB. Free memory was 78.6 MB in the beginning and 77.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:31,921 INFO L168 Benchmark]: Boogie Preprocessor took 17.90 ms. Allocated memory is still 102.8 MB. Free memory was 77.5 MB in the beginning and 76.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:31,921 INFO L168 Benchmark]: RCFGBuilder took 414.81 ms. Allocated memory is still 102.8 MB. Free memory was 76.4 MB in the beginning and 63.6 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:31,922 INFO L168 Benchmark]: TraceAbstraction took 2795.75 ms. Allocated memory was 102.8 MB in the beginning and 157.3 MB in the end (delta: 54.5 MB). Free memory was 63.2 MB in the beginning and 128.2 MB in the end (delta: -64.9 MB). Peak memory consumption was 42.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:31,922 INFO L168 Benchmark]: Witness Printer took 46.61 ms. Allocated memory is still 157.3 MB. Free memory was 128.2 MB in the beginning and 126.1 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:31,926 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 102.8 MB. Free memory was 56.6 MB in the beginning and 56.5 MB in the end (delta: 41.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 316.33 ms. Allocated memory is still 102.8 MB. Free memory was 70.1 MB in the beginning and 78.6 MB in the end (delta: -8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.39 ms. Allocated memory is still 102.8 MB. Free memory was 78.6 MB in the beginning and 77.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.90 ms. Allocated memory is still 102.8 MB. Free memory was 77.5 MB in the beginning and 76.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 414.81 ms. Allocated memory is still 102.8 MB. Free memory was 76.4 MB in the beginning and 63.6 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2795.75 ms. Allocated memory was 102.8 MB in the beginning and 157.3 MB in the end (delta: 54.5 MB). Free memory was 63.2 MB in the beginning and 128.2 MB in the end (delta: -64.9 MB). Peak memory consumption was 42.8 MB. Max. memory is 16.1 GB. * Witness Printer took 46.61 ms. Allocated memory is still 157.3 MB. Free memory was 128.2 MB in the beginning and 126.1 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: 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 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((i + k <= 2 && 1 <= i + k) && 2 <= i) && 1 <= cond) || ((i == 1 && 0 <= k) && k <= 1) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: !(0 == cond) || i == 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 13 SDslu, 11 SDs, 0 SdLazy, 28 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 7 NumberOfFragments, 36 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 23 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 888 SizeOfPredicates, 5 NumberOfNonLiveVariables, 59 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 1/6 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...