./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/lu.cmp.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_worker_vcloud-master_on_vcloud-master/run_dir_14f58ecb-628d-4deb-a167-63529e0212a5/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14f58ecb-628d-4deb-a167-63529e0212a5/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_14f58ecb-628d-4deb-a167-63529e0212a5/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14f58ecb-628d-4deb-a167-63529e0212a5/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/lu.cmp.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14f58ecb-628d-4deb-a167-63529e0212a5/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_14f58ecb-628d-4deb-a167-63529e0212a5/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 640282f6b7135e6e195eda6d48d5761dd6ed3cc4 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 02:24:38,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:24:38,859 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:24:38,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:24:38,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:24:38,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:24:38,894 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:24:38,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:24:38,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:24:38,901 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:24:38,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:24:38,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:24:38,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:24:38,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:24:38,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:24:38,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:24:38,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:24:38,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:24:38,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:24:38,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:24:38,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:24:38,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:24:38,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:24:38,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:24:38,929 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:24:38,930 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:24:38,930 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:24:38,931 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:24:38,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:24:38,934 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:24:38,934 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:24:38,936 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:24:38,937 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:24:38,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:24:38,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:24:38,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:24:38,941 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:24:38,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:24:38,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:24:38,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:24:38,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:24:38,946 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14f58ecb-628d-4deb-a167-63529e0212a5/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:24:38,975 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:24:38,976 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:24:38,980 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:24:38,980 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:24:38,981 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:24:38,981 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:24:38,981 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:24:38,981 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:24:38,988 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:24:38,988 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:24:38,989 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:24:38,989 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:24:38,989 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:24:38,990 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:24:38,990 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:24:38,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:24:38,991 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:24:38,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:24:38,991 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:24:38,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:24:38,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:24:38,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:24:38,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:24:38,992 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:24:38,993 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:24:38,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:24:38,993 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:24:38,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:24:38,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:24:38,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:24:38,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:24:38,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:24:38,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:24:38,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:24:38,996 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:24:38,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:24:38,997 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:24:38,997 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:24:38,997 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:24:38,997 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_14f58ecb-628d-4deb-a167-63529e0212a5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14f58ecb-628d-4deb-a167-63529e0212a5/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 640282f6b7135e6e195eda6d48d5761dd6ed3cc4 [2021-10-11 02:24:39,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:24:39,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:24:39,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:24:39,324 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:24:39,327 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:24:39,329 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14f58ecb-628d-4deb-a167-63529e0212a5/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/loops/lu.cmp.c [2021-10-11 02:24:39,422 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14f58ecb-628d-4deb-a167-63529e0212a5/bin/utaipan-WLngWcDbfI/data/9f7799e6c/52807fcd7fab4e3fb74ae69af97abbbb/FLAGbf66217d5 [2021-10-11 02:24:40,014 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:24:40,015 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14f58ecb-628d-4deb-a167-63529e0212a5/sv-benchmarks/c/loops/lu.cmp.c [2021-10-11 02:24:40,031 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14f58ecb-628d-4deb-a167-63529e0212a5/bin/utaipan-WLngWcDbfI/data/9f7799e6c/52807fcd7fab4e3fb74ae69af97abbbb/FLAGbf66217d5 [2021-10-11 02:24:40,359 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14f58ecb-628d-4deb-a167-63529e0212a5/bin/utaipan-WLngWcDbfI/data/9f7799e6c/52807fcd7fab4e3fb74ae69af97abbbb [2021-10-11 02:24:40,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:24:40,363 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:24:40,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:40,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:24:40,368 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:24:40,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:40" (1/1) ... [2021-10-11 02:24:40,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@401935eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:40, skipping insertion in model container [2021-10-11 02:24:40,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:40" (1/1) ... [2021-10-11 02:24:40,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:24:40,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:24:40,572 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_14f58ecb-628d-4deb-a167-63529e0212a5/sv-benchmarks/c/loops/lu.cmp.c[318,331] [2021-10-11 02:24:40,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:40,635 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:24:40,651 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_14f58ecb-628d-4deb-a167-63529e0212a5/sv-benchmarks/c/loops/lu.cmp.c[318,331] [2021-10-11 02:24:40,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:40,704 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:24:40,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:40 WrapperNode [2021-10-11 02:24:40,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:40,706 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:40,707 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:24:40,707 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:24:40,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:40" (1/1) ... [2021-10-11 02:24:40,744 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:40" (1/1) ... [2021-10-11 02:24:40,788 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:40,792 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:24:40,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:24:40,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:24:40,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:40" (1/1) ... [2021-10-11 02:24:40,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:40" (1/1) ... [2021-10-11 02:24:40,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:40" (1/1) ... [2021-10-11 02:24:40,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:40" (1/1) ... [2021-10-11 02:24:40,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:40" (1/1) ... [2021-10-11 02:24:40,847 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:40" (1/1) ... [2021-10-11 02:24:40,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:40" (1/1) ... [2021-10-11 02:24:40,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:24:40,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:24:40,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:24:40,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:24:40,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:40" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14f58ecb-628d-4deb-a167-63529e0212a5/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 02:24:40,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:24:40,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:24:40,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-11 02:24:40,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-11 02:24:40,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:24:40,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:24:40,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:24:41,886 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:24:41,887 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-10-11 02:24:41,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:41 BoogieIcfgContainer [2021-10-11 02:24:41,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:24:41,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:24:41,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:24:41,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:24:41,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:24:40" (1/3) ... [2021-10-11 02:24:41,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3feb469d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:41, skipping insertion in model container [2021-10-11 02:24:41,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:40" (2/3) ... [2021-10-11 02:24:41,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3feb469d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:41, skipping insertion in model container [2021-10-11 02:24:41,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:41" (3/3) ... [2021-10-11 02:24:41,901 INFO L111 eAbstractionObserver]: Analyzing ICFG lu.cmp.c [2021-10-11 02:24:41,917 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:24:41,921 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:24:41,930 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:24:41,953 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:24:41,953 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:24:41,954 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:24:41,954 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:24:41,954 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:24:41,954 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:24:41,954 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:24:41,954 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:24:41,966 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2021-10-11 02:24:41,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:24:41,969 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:41,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:24:41,970 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:41,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:41,976 INFO L82 PathProgramCache]: Analyzing trace with hash 224012112, now seen corresponding path program 1 times [2021-10-11 02:24:41,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:41,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310157055] [2021-10-11 02:24:41,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:42,179 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 02:24:42,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310157055] [2021-10-11 02:24:42,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:42,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:24:42,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485740807] [2021-10-11 02:24:42,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:42,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:42,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:42,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:42,210 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 4 states. [2021-10-11 02:24:42,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:42,279 INFO L93 Difference]: Finished difference Result 44 states and 73 transitions. [2021-10-11 02:24:42,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:24:42,281 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2021-10-11 02:24:42,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:42,289 INFO L225 Difference]: With dead ends: 44 [2021-10-11 02:24:42,289 INFO L226 Difference]: Without dead ends: 8 [2021-10-11 02:24:42,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:42,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-11 02:24:42,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-11 02:24:42,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-11 02:24:42,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2021-10-11 02:24:42,324 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2021-10-11 02:24:42,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:42,325 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-10-11 02:24:42,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:42,325 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2021-10-11 02:24:42,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:24:42,326 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:42,326 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:24:42,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:24:42,327 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:42,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:42,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1644983507, now seen corresponding path program 1 times [2021-10-11 02:24:42,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:42,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648113451] [2021-10-11 02:24:42,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:42,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:42,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:24:42,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648113451] [2021-10-11 02:24:42,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:42,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:24:42,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490854374] [2021-10-11 02:24:42,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:42,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:42,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:42,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:42,400 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 4 states. [2021-10-11 02:24:42,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:42,457 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2021-10-11 02:24:42,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:24:42,458 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-10-11 02:24:42,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:42,458 INFO L225 Difference]: With dead ends: 15 [2021-10-11 02:24:42,459 INFO L226 Difference]: Without dead ends: 13 [2021-10-11 02:24:42,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:42,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-11 02:24:42,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-10-11 02:24:42,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-11 02:24:42,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-10-11 02:24:42,466 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 6 [2021-10-11 02:24:42,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:42,467 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-10-11 02:24:42,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:42,467 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2021-10-11 02:24:42,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:24:42,468 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:42,468 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2021-10-11 02:24:42,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:24:42,470 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:42,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:42,472 INFO L82 PathProgramCache]: Analyzing trace with hash -931037585, now seen corresponding path program 1 times [2021-10-11 02:24:42,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:42,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482663401] [2021-10-11 02:24:42,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:42,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:42,620 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:24:42,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482663401] [2021-10-11 02:24:42,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691395583] [2021-10-11 02:24:42,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14f58ecb-628d-4deb-a167-63529e0212a5/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 02:24:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:42,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:24:42,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:24:42,833 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:24:42,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:24:42,884 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:24:42,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1797790319] [2021-10-11 02:24:42,912 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-11 02:24:42,912 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:24:42,917 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:24:42,924 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:24:42,925 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:24:44,049 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:24:44,063 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:24:44,279 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:24:44,643 FATAL L? ?]: Ignoring exception! java.util.ConcurrentModificationException at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-11 02:24:44,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:24:44,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2021-10-11 02:24:44,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993919743] [2021-10-11 02:24:44,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-10-11 02:24:44,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:44,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-11 02:24:44,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-10-11 02:24:44,649 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 11 states. [2021-10-11 02:24:44,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:44,964 INFO L93 Difference]: Finished difference Result 35 states and 49 transitions. [2021-10-11 02:24:44,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-11 02:24:44,964 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2021-10-11 02:24:44,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:44,966 INFO L225 Difference]: With dead ends: 35 [2021-10-11 02:24:44,966 INFO L226 Difference]: Without dead ends: 27 [2021-10-11 02:24:44,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=201, Invalid=501, Unknown=0, NotChecked=0, Total=702 [2021-10-11 02:24:44,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-11 02:24:44,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2021-10-11 02:24:44,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-10-11 02:24:44,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-10-11 02:24:44,981 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 11 [2021-10-11 02:24:44,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:44,981 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-10-11 02:24:44,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-10-11 02:24:44,982 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-10-11 02:24:44,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-11 02:24:44,983 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:44,983 INFO L422 BasicCegarLoop]: trace histogram [12, 3, 3, 2, 2, 1, 1, 1] [2021-10-11 02:24:45,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-11 02:24:45,209 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:45,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:45,209 INFO L82 PathProgramCache]: Analyzing trace with hash 163041618, now seen corresponding path program 2 times [2021-10-11 02:24:45,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:45,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349271790] [2021-10-11 02:24:45,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:45,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:45,397 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-10-11 02:24:45,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349271790] [2021-10-11 02:24:45,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676115592] [2021-10-11 02:24:45,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14f58ecb-628d-4deb-a167-63529e0212a5/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:24:45,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-11 02:24:45,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:24:45,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 02:24:45,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:24:45,528 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-10-11 02:24:45,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:24:45,580 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-10-11 02:24:45,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [332072838] [2021-10-11 02:24:45,585 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-11 02:24:45,585 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:24:45,586 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:24:45,587 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:24:45,588 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:24:45,968 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:24:46,229 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:24:46,302 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:24:46,489 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:24:46,653 FATAL L? ?]: Ignoring exception! java.util.ConcurrentModificationException at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-11 02:24:46,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:24:46,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-10-11 02:24:46,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535310176] [2021-10-11 02:24:46,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:24:46,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:46,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:24:46,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:24:46,655 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 8 states. [2021-10-11 02:24:46,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:46,705 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-10-11 02:24:46,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:24:46,705 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2021-10-11 02:24:46,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:46,706 INFO L225 Difference]: With dead ends: 26 [2021-10-11 02:24:46,706 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:24:46,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-10-11 02:24:46,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:24:46,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:24:46,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:24:46,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:24:46,708 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2021-10-11 02:24:46,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:46,708 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:24:46,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:24:46,708 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:24:46,708 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:24:46,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-10-11 02:24:46,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:24:47,048 INFO L258 CegarLoopResult]: At program point L93-3(lines 93 104) the Hoare annotation is: (let ((.cse0 (<= 5 ULTIMATE.start_main_~n~0)) (.cse1 (<= ULTIMATE.start_main_~n~0 5))) (or (and .cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (< ULTIMATE.start_main_~i~0 50) .cse1) (and (= ULTIMATE.start_main_~i~0 0) .cse0 .cse1))) [2021-10-11 02:24:47,048 INFO L258 CegarLoopResult]: At program point L118-3(lines 118 136) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2021-10-11 02:24:47,049 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:24:47,049 INFO L258 CegarLoopResult]: At program point L153(lines 111 155) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2021-10-11 02:24:47,049 INFO L262 CegarLoopResult]: For program point L120(line 120) no Hoare annotation was computed. [2021-10-11 02:24:47,049 INFO L258 CegarLoopResult]: At program point L129-3(lines 129 135) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2021-10-11 02:24:47,049 INFO L258 CegarLoopResult]: At program point L96-3(lines 96 101) the Hoare annotation is: (let ((.cse0 (<= 5 ULTIMATE.start_main_~n~0)) (.cse1 (<= ULTIMATE.start_main_~n~0 5))) (or (and (<= ULTIMATE.start_main_~i~0 5) .cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1) (and (= ULTIMATE.start_main_~i~0 0) .cse0 .cse1))) [2021-10-11 02:24:47,049 INFO L258 CegarLoopResult]: At program point L121-3(lines 121 128) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2021-10-11 02:24:47,049 INFO L258 CegarLoopResult]: At program point L146-3(lines 146 152) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2021-10-11 02:24:47,049 INFO L258 CegarLoopResult]: At program point L138-3(lines 138 144) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2021-10-11 02:24:47,050 INFO L262 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-10-11 02:24:47,050 INFO L258 CegarLoopResult]: At program point L6-2(lines 5 10) the Hoare annotation is: (and (<= ULTIMATE.start_main_~i~0 5) (<= 5 ULTIMATE.start_main_~n~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= ULTIMATE.start_main_~n~0 5)) [2021-10-11 02:24:47,050 INFO L262 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2021-10-11 02:24:47,050 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2021-10-11 02:24:47,050 INFO L258 CegarLoopResult]: At program point L132-3(lines 132 133) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2021-10-11 02:24:47,050 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:24:47,050 INFO L262 CegarLoopResult]: For program point L124(lines 124 126) no Hoare annotation was computed. [2021-10-11 02:24:47,050 INFO L262 CegarLoopResult]: For program point L124-1(lines 124 126) no Hoare annotation was computed. [2021-10-11 02:24:47,051 INFO L258 CegarLoopResult]: At program point L149-3(lines 149 150) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2021-10-11 02:24:47,051 INFO L258 CegarLoopResult]: At program point L141-3(lines 141 142) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2021-10-11 02:24:47,051 INFO L258 CegarLoopResult]: At program point L125-3(lines 125 126) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2021-10-11 02:24:47,051 INFO L262 CegarLoopResult]: For program point L117(line 117) no Hoare annotation was computed. [2021-10-11 02:24:47,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:24:47 BoogieIcfgContainer [2021-10-11 02:24:47,068 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:24:47,068 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:24:47,068 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:24:47,069 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:24:47,069 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:41" (3/4) ... [2021-10-11 02:24:47,072 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:24:47,084 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2021-10-11 02:24:47,085 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2021-10-11 02:24:47,085 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:24:47,086 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:24:47,134 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14f58ecb-628d-4deb-a167-63529e0212a5/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:24:47,134 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:24:47,135 INFO L168 Benchmark]: Toolchain (without parser) took 6772.44 ms. Allocated memory was 113.2 MB in the beginning and 167.8 MB in the end (delta: 54.5 MB). Free memory was 77.9 MB in the beginning and 94.1 MB in the end (delta: -16.2 MB). Peak memory consumption was 39.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:47,136 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 113.2 MB. Free memory was 88.9 MB in the beginning and 88.9 MB in the end (delta: 30.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:47,136 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.21 ms. Allocated memory is still 113.2 MB. Free memory was 77.7 MB in the beginning and 87.2 MB in the end (delta: -9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:47,143 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.09 ms. Allocated memory is still 113.2 MB. Free memory was 87.2 MB in the beginning and 84.6 MB in the end (delta: 2.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:47,143 INFO L168 Benchmark]: Boogie Preprocessor took 68.79 ms. Allocated memory is still 113.2 MB. Free memory was 84.6 MB in the beginning and 83.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:47,144 INFO L168 Benchmark]: RCFGBuilder took 1028.30 ms. Allocated memory is still 113.2 MB. Free memory was 83.0 MB in the beginning and 87.1 MB in the end (delta: -4.1 MB). Peak memory consumption was 53.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:47,145 INFO L168 Benchmark]: TraceAbstraction took 5174.50 ms. Allocated memory was 113.2 MB in the beginning and 167.8 MB in the end (delta: 54.5 MB). Free memory was 86.5 MB in the beginning and 98.3 MB in the end (delta: -11.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:47,145 INFO L168 Benchmark]: Witness Printer took 66.13 ms. Allocated memory is still 167.8 MB. Free memory was 98.3 MB in the beginning and 94.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:47,149 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 113.2 MB. Free memory was 88.9 MB in the beginning and 88.9 MB in the end (delta: 30.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 341.21 ms. Allocated memory is still 113.2 MB. Free memory was 77.7 MB in the beginning and 87.2 MB in the end (delta: -9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 85.09 ms. Allocated memory is still 113.2 MB. Free memory was 87.2 MB in the beginning and 84.6 MB in the end (delta: 2.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.79 ms. Allocated memory is still 113.2 MB. Free memory was 84.6 MB in the beginning and 83.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1028.30 ms. Allocated memory is still 113.2 MB. Free memory was 83.0 MB in the beginning and 87.1 MB in the end (delta: -4.1 MB). Peak memory consumption was 53.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5174.50 ms. Allocated memory was 113.2 MB in the beginning and 167.8 MB in the end (delta: 54.5 MB). Free memory was 86.5 MB in the beginning and 98.3 MB in the end (delta: -11.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 16.1 GB. * Witness Printer took 66.13 ms. Allocated memory is still 167.8 MB. Free memory was 98.3 MB in the beginning and 94.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: 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: 146]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 93]: Loop Invariant Derived loop invariant: (((5 <= n && 1 == cond) && i < 50) && n <= 5) || ((i == 0 && 5 <= n) && n <= 5) - InvariantResult [Line: 125]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 138]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 149]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 96]: Loop Invariant Derived loop invariant: (((i <= 5 && 5 <= n) && 1 == cond) && n <= 5) || ((i == 0 && 5 <= n) && n <= 5) - InvariantResult [Line: 118]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 129]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 141]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 121]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 132]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 111]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: ((i <= 5 && 5 <= n) && 1 == cond) && n <= 5 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.9s, OverallIterations: 4, TraceHistogramMax: 12, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 78 SDslu, 49 SDs, 0 SdLazy, 76 SolverSat, 61 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=3, 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, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 13 PreInvPairs, 43 NumberOfFragments, 91 HoareAnnotationTreeSize, 13 FomulaSimplifications, 397 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 83 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 111 ConstructedInterpolants, 0 QuantifiedInterpolants, 5916 SizeOfPredicates, 6 NumberOfNonLiveVariables, 167 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 197/361 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...