./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/lu.cmp.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7 --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 9f7b9e2e2452a973cdb1a73a9c368f26d19387c763b2be4ad10c01e7a31f6598 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:21:23,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:21:23,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:21:23,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:21:23,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:21:23,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:21:23,868 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:21:23,872 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:21:23,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:21:23,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:21:23,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:21:23,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:21:23,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:21:23,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:21:23,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:21:23,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:21:23,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:21:23,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:21:23,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:21:23,904 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:21:23,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:21:23,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:21:23,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:21:23,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:21:23,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:21:23,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:21:23,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:21:23,923 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:21:23,923 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:21:23,925 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:21:23,926 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:21:23,927 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:21:23,928 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:21:23,929 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:21:23,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:21:23,931 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:21:23,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:21:23,932 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:21:23,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:21:23,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:21:23,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:21:23,935 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 18:21:23,985 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:21:23,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:21:23,986 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:21:23,986 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:21:23,988 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:21:23,988 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:21:23,988 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:21:23,988 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:21:23,989 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:21:23,989 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:21:23,990 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:21:23,990 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:21:23,990 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:21:23,991 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:21:23,991 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:21:23,991 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:21:23,991 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:21:23,992 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:21:23,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:21:23,993 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:21:23,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:21:23,993 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:21:23,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:21:23,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:21:23,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:21:23,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:21:23,995 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:21:23,996 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:21:23,996 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:21:23,996 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:21:23,996 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:21:23,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:21:23,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:21:23,997 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:21:23,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:21:23,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:21:23,998 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:21:23,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:21:23,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:21:23,999 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:21:23,999 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:21:23,999 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_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f7b9e2e2452a973cdb1a73a9c368f26d19387c763b2be4ad10c01e7a31f6598 [2021-11-25 18:21:24,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:21:24,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:21:24,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:21:24,318 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:21:24,319 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:21:24,320 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/loops/lu.cmp.c [2021-11-25 18:21:24,390 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/data/5197da575/6936d5411dbc466991b194203da1d7c1/FLAGb008b3751 [2021-11-25 18:21:24,866 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:21:24,866 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/sv-benchmarks/c/loops/lu.cmp.c [2021-11-25 18:21:24,873 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/data/5197da575/6936d5411dbc466991b194203da1d7c1/FLAGb008b3751 [2021-11-25 18:21:25,262 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/data/5197da575/6936d5411dbc466991b194203da1d7c1 [2021-11-25 18:21:25,264 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:21:25,267 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:21:25,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:21:25,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:21:25,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:21:25,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:21:25" (1/1) ... [2021-11-25 18:21:25,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fb8db30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:25, skipping insertion in model container [2021-11-25 18:21:25,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:21:25" (1/1) ... [2021-11-25 18:21:25,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:21:25,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:21:25,500 WARN L230 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_c16d1119-18f3-4307-9105-4c7cfc23b023/sv-benchmarks/c/loops/lu.cmp.c[318,331] [2021-11-25 18:21:25,540 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:21:25,558 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:21:25,567 WARN L230 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_c16d1119-18f3-4307-9105-4c7cfc23b023/sv-benchmarks/c/loops/lu.cmp.c[318,331] [2021-11-25 18:21:25,588 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:21:25,602 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:21:25,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:25 WrapperNode [2021-11-25 18:21:25,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:21:25,604 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:21:25,604 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:21:25,605 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:21:25,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:25" (1/1) ... [2021-11-25 18:21:25,622 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:25" (1/1) ... [2021-11-25 18:21:25,653 INFO L137 Inliner]: procedures = 17, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 224 [2021-11-25 18:21:25,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:21:25,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:21:25,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:21:25,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:21:25,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:25" (1/1) ... [2021-11-25 18:21:25,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:25" (1/1) ... [2021-11-25 18:21:25,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:25" (1/1) ... [2021-11-25 18:21:25,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:25" (1/1) ... [2021-11-25 18:21:25,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:25" (1/1) ... [2021-11-25 18:21:25,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:25" (1/1) ... [2021-11-25 18:21:25,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:25" (1/1) ... [2021-11-25 18:21:25,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:21:25,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:21:25,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:21:25,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:21:25,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:25" (1/1) ... [2021-11-25 18:21:25,704 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:21:25,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:21:25,740 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:21:25,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:21:25,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:21:25,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:21:25,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:21:25,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-25 18:21:25,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-25 18:21:25,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:21:25,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:21:25,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:21:25,903 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:21:25,905 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:21:26,208 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:21:26,331 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:21:26,331 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-25 18:21:26,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:21:26 BoogieIcfgContainer [2021-11-25 18:21:26,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:21:26,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:21:26,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:21:26,340 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:21:26,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:21:25" (1/3) ... [2021-11-25 18:21:26,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79c1fcf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:21:26, skipping insertion in model container [2021-11-25 18:21:26,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:25" (2/3) ... [2021-11-25 18:21:26,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79c1fcf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:21:26, skipping insertion in model container [2021-11-25 18:21:26,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:21:26" (3/3) ... [2021-11-25 18:21:26,344 INFO L111 eAbstractionObserver]: Analyzing ICFG lu.cmp.c [2021-11-25 18:21:26,349 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:21:26,349 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:21:26,394 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:21:26,401 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:21:26,401 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:21:26,414 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.8) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:26,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 18:21:26,419 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:21:26,420 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 18:21:26,420 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:21:26,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:21:26,426 INFO L85 PathProgramCache]: Analyzing trace with hash 219396429, now seen corresponding path program 1 times [2021-11-25 18:21:26,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:21:26,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545763353] [2021-11-25 18:21:26,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:21:26,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:21:26,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:21:26,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:21:26,608 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:21:26,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545763353] [2021-11-25 18:21:26,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545763353] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:21:26,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:21:26,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:21:26,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131081653] [2021-11-25 18:21:26,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:21:26,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:21:26,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:21:26,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:21:26,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:21:26,667 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.8) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:26,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:21:26,739 INFO L93 Difference]: Finished difference Result 44 states and 73 transitions. [2021-11-25 18:21:26,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:21:26,741 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-25 18:21:26,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:21:26,749 INFO L225 Difference]: With dead ends: 44 [2021-11-25 18:21:26,749 INFO L226 Difference]: Without dead ends: 8 [2021-11-25 18:21:26,752 INFO L932 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 [2021-11-25 18:21:26,755 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 34 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:21:26,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 26 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:21:26,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-11-25 18:21:26,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-11-25 18:21:26,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:26,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2021-11-25 18:21:26,787 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2021-11-25 18:21:26,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:21:26,787 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-11-25 18:21:26,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:26,788 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2021-11-25 18:21:26,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 18:21:26,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:21:26,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 18:21:26,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:21:26,789 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:21:26,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:21:26,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1788574205, now seen corresponding path program 1 times [2021-11-25 18:21:26,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:21:26,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149591426] [2021-11-25 18:21:26,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:21:26,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:21:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:21:26,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 18:21:26,925 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:21:26,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149591426] [2021-11-25 18:21:26,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149591426] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:21:26,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:21:26,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:21:26,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038668168] [2021-11-25 18:21:26,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:21:26,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:21:26,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:21:26,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:21:26,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:21:26,929 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:26,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:21:26,983 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2021-11-25 18:21:26,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:21:26,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-25 18:21:26,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:21:26,985 INFO L225 Difference]: With dead ends: 15 [2021-11-25 18:21:26,985 INFO L226 Difference]: Without dead ends: 13 [2021-11-25 18:21:26,986 INFO L932 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 [2021-11-25 18:21:26,988 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 6 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:21:26,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 7 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:21:26,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-25 18:21:26,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-11-25 18:21:26,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:26,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-11-25 18:21:26,993 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 6 [2021-11-25 18:21:26,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:21:26,994 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-11-25 18:21:26,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:26,994 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2021-11-25 18:21:26,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 18:21:26,995 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:21:26,995 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2021-11-25 18:21:26,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:21:26,995 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:21:27,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:21:27,000 INFO L85 PathProgramCache]: Analyzing trace with hash 253668577, now seen corresponding path program 1 times [2021-11-25 18:21:27,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:21:27,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375213856] [2021-11-25 18:21:27,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:21:27,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:21:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:21:27,145 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 18:21:27,146 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:21:27,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375213856] [2021-11-25 18:21:27,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375213856] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:21:27,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045110071] [2021-11-25 18:21:27,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:21:27,147 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:21:27,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:21:27,151 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:21:27,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:21:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:21:27,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 18:21:27,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:21:27,367 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 18:21:27,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:21:27,422 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 18:21:27,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045110071] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:21:27,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1906629899] [2021-11-25 18:21:27,452 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-25 18:21:27,452 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:21:27,458 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:21:27,464 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:21:27,465 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:21:27,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2021-11-25 18:21:27,752 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:21:27,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 21 [2021-11-25 18:21:27,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 35 [2021-11-25 18:21:28,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:21:28,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:21:28,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:21:28,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 323 treesize of output 318 [2021-11-25 18:21:28,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:21:28,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 343 treesize of output 316 [2021-11-25 18:21:28,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:21:28,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:21:28,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:21:28,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 391 treesize of output 399 [2021-11-25 18:21:28,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:21:28,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 430 treesize of output 397 [2021-11-25 18:21:29,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:21:29,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:21:29,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:21:29,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 25 [2021-11-25 18:21:29,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:21:29,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 326 treesize of output 293 [2021-11-25 18:21:29,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:21:29,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:21:29,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:21:29,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 325 treesize of output 311 [2021-11-25 18:21:29,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:21:29,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:21:29,703 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Should have been eliminated by DER at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:353) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:184) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:166) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:154) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:142) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:126) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:110) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:95) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:90) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:903) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:865) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:783) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:425) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:162) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:243) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:496) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:162) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:243) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:233) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:119) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:98) 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:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) [2021-11-25 18:21:29,707 INFO L158 Benchmark]: Toolchain (without parser) took 4440.01ms. Allocated memory was 102.8MB in the beginning and 174.1MB in the end (delta: 71.3MB). Free memory was 67.8MB in the beginning and 98.9MB in the end (delta: -31.1MB). Peak memory consumption was 65.3MB. Max. memory is 16.1GB. [2021-11-25 18:21:29,708 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 102.8MB. Free memory was 74.9MB in the beginning and 74.8MB in the end (delta: 26.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:21:29,708 INFO L158 Benchmark]: CACSL2BoogieTranslator took 332.24ms. Allocated memory is still 102.8MB. Free memory was 67.8MB in the beginning and 76.5MB in the end (delta: -8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 18:21:29,715 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.07ms. Allocated memory is still 102.8MB. Free memory was 76.5MB in the beginning and 74.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:21:29,720 INFO L158 Benchmark]: Boogie Preprocessor took 35.97ms. Allocated memory is still 102.8MB. Free memory was 74.1MB in the beginning and 72.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:21:29,720 INFO L158 Benchmark]: RCFGBuilder took 643.21ms. Allocated memory is still 102.8MB. Free memory was 72.3MB in the beginning and 53.1MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-25 18:21:29,721 INFO L158 Benchmark]: TraceAbstraction took 3370.75ms. Allocated memory was 102.8MB in the beginning and 174.1MB in the end (delta: 71.3MB). Free memory was 52.7MB in the beginning and 98.9MB in the end (delta: -46.2MB). Peak memory consumption was 51.4MB. Max. memory is 16.1GB. [2021-11-25 18:21:29,725 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 102.8MB. Free memory was 74.9MB in the beginning and 74.8MB in the end (delta: 26.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 332.24ms. Allocated memory is still 102.8MB. Free memory was 67.8MB in the beginning and 76.5MB in the end (delta: -8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.07ms. Allocated memory is still 102.8MB. Free memory was 76.5MB in the beginning and 74.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.97ms. Allocated memory is still 102.8MB. Free memory was 74.1MB in the beginning and 72.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 643.21ms. Allocated memory is still 102.8MB. Free memory was 72.3MB in the beginning and 53.1MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 3370.75ms. Allocated memory was 102.8MB in the beginning and 174.1MB in the end (delta: 71.3MB). Free memory was 52.7MB in the beginning and 98.9MB in the end (delta: -46.2MB). Peak memory consumption was 51.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Should have been eliminated by DER de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Should have been eliminated by DER: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:108) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-25 18:21:29,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/lu.cmp.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7 --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 9f7b9e2e2452a973cdb1a73a9c368f26d19387c763b2be4ad10c01e7a31f6598 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:21:31,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:21:31,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:21:32,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:21:32,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:21:32,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:21:32,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:21:32,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:21:32,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:21:32,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:21:32,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:21:32,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:21:32,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:21:32,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:21:32,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:21:32,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:21:32,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:21:32,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:21:32,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:21:32,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:21:32,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:21:32,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:21:32,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:21:32,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:21:32,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:21:32,071 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:21:32,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:21:32,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:21:32,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:21:32,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:21:32,076 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:21:32,077 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:21:32,079 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:21:32,080 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:21:32,081 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:21:32,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:21:32,082 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:21:32,083 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:21:32,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:21:32,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:21:32,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:21:32,086 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-25 18:21:32,130 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:21:32,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:21:32,131 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:21:32,131 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:21:32,132 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:21:32,132 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:21:32,132 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:21:32,132 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:21:32,133 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:21:32,133 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:21:32,134 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:21:32,134 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:21:32,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:21:32,136 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:21:32,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:21:32,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:21:32,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:21:32,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:21:32,136 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:21:32,137 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 18:21:32,137 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 18:21:32,137 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 18:21:32,137 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:21:32,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:21:32,138 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:21:32,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:21:32,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:21:32,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 18:21:32,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:21:32,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:21:32,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:21:32,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:21:32,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:21:32,140 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 18:21:32,140 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 18:21:32,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:21:32,140 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:21:32,141 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:21:32,141 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f7b9e2e2452a973cdb1a73a9c368f26d19387c763b2be4ad10c01e7a31f6598 [2021-11-25 18:21:32,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:21:32,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:21:32,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:21:32,586 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:21:32,588 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:21:32,589 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/loops/lu.cmp.c [2021-11-25 18:21:32,654 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/data/b8d48911d/718bec00a5274237a30578deeb1d4c65/FLAGa8db1069f [2021-11-25 18:21:33,178 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:21:33,179 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/sv-benchmarks/c/loops/lu.cmp.c [2021-11-25 18:21:33,194 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/data/b8d48911d/718bec00a5274237a30578deeb1d4c65/FLAGa8db1069f [2021-11-25 18:21:33,552 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/data/b8d48911d/718bec00a5274237a30578deeb1d4c65 [2021-11-25 18:21:33,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:21:33,559 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:21:33,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:21:33,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:21:33,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:21:33,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:21:33" (1/1) ... [2021-11-25 18:21:33,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dc5dfea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:33, skipping insertion in model container [2021-11-25 18:21:33,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:21:33" (1/1) ... [2021-11-25 18:21:33,578 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:21:33,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:21:33,748 WARN L230 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_c16d1119-18f3-4307-9105-4c7cfc23b023/sv-benchmarks/c/loops/lu.cmp.c[318,331] [2021-11-25 18:21:33,826 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:21:33,858 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:21:33,870 WARN L230 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_c16d1119-18f3-4307-9105-4c7cfc23b023/sv-benchmarks/c/loops/lu.cmp.c[318,331] [2021-11-25 18:21:33,893 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:21:33,911 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:21:33,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:33 WrapperNode [2021-11-25 18:21:33,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:21:33,913 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:21:33,913 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:21:33,913 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:21:33,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:33" (1/1) ... [2021-11-25 18:21:33,933 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:33" (1/1) ... [2021-11-25 18:21:33,959 INFO L137 Inliner]: procedures = 18, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 224 [2021-11-25 18:21:33,960 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:21:33,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:21:33,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:21:33,961 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:21:33,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:33" (1/1) ... [2021-11-25 18:21:33,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:33" (1/1) ... [2021-11-25 18:21:33,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:33" (1/1) ... [2021-11-25 18:21:33,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:33" (1/1) ... [2021-11-25 18:21:33,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:33" (1/1) ... [2021-11-25 18:21:33,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:33" (1/1) ... [2021-11-25 18:21:33,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:33" (1/1) ... [2021-11-25 18:21:34,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:21:34,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:21:34,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:21:34,002 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:21:34,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:33" (1/1) ... [2021-11-25 18:21:34,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:21:34,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:21:34,032 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:21:34,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:21:34,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:21:34,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-25 18:21:34,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-25 18:21:34,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 18:21:34,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:21:34,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:21:34,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:21:34,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:21:34,194 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:21:34,195 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:21:50,271 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:21:50,278 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:21:50,278 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-25 18:21:50,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:21:50 BoogieIcfgContainer [2021-11-25 18:21:50,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:21:50,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:21:50,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:21:50,287 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:21:50,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:21:33" (1/3) ... [2021-11-25 18:21:50,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db2663a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:21:50, skipping insertion in model container [2021-11-25 18:21:50,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:33" (2/3) ... [2021-11-25 18:21:50,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db2663a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:21:50, skipping insertion in model container [2021-11-25 18:21:50,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:21:50" (3/3) ... [2021-11-25 18:21:50,300 INFO L111 eAbstractionObserver]: Analyzing ICFG lu.cmp.c [2021-11-25 18:21:50,306 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:21:50,316 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:21:50,368 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:21:50,375 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:21:50,375 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:21:50,391 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 48 states have (on average 1.6041666666666667) internal successors, (77), 49 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:50,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 18:21:50,396 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:21:50,397 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:21:50,398 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:21:50,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:21:50,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1809811384, now seen corresponding path program 1 times [2021-11-25 18:21:50,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:21:50,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1363788239] [2021-11-25 18:21:50,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:21:50,422 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:21:50,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:21:50,427 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:21:50,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 18:21:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:21:50,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:21:50,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:21:50,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:21:50,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:21:50,694 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:21:50,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1363788239] [2021-11-25 18:21:50,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1363788239] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:21:50,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:21:50,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:21:50,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464820767] [2021-11-25 18:21:50,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:21:50,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:21:50,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:21:50,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:21:50,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:21:50,732 INFO L87 Difference]: Start difference. First operand has 50 states, 48 states have (on average 1.6041666666666667) internal successors, (77), 49 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:52,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:21:52,244 INFO L93 Difference]: Finished difference Result 102 states and 159 transitions. [2021-11-25 18:21:52,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:21:52,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-25 18:21:52,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:21:52,264 INFO L225 Difference]: With dead ends: 102 [2021-11-25 18:21:52,264 INFO L226 Difference]: Without dead ends: 17 [2021-11-25 18:21:52,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:21:52,270 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 67 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:21:52,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 112 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-25 18:21:52,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-25 18:21:52,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2021-11-25 18:21:52,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:52,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-11-25 18:21:52,301 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2021-11-25 18:21:52,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:21:52,301 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-11-25 18:21:52,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:52,302 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-11-25 18:21:52,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 18:21:52,302 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:21:52,303 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:21:52,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:21:52,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:21:52,515 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:21:52,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:21:52,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1948892579, now seen corresponding path program 1 times [2021-11-25 18:21:52,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:21:52,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1989349612] [2021-11-25 18:21:52,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:21:52,518 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:21:52,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:21:52,519 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:21:52,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 18:21:52,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:21:52,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 18:21:52,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:21:53,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:21:53,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:21:53,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:21:53,429 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:21:53,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1989349612] [2021-11-25 18:21:53,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1989349612] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:21:53,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1187486942] [2021-11-25 18:21:53,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:21:53,430 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 18:21:53,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 18:21:53,441 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 18:21:53,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-25 18:21:53,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:21:53,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 18:21:53,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:21:54,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:21:54,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:21:54,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:21:54,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1187486942] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:21:54,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261490319] [2021-11-25 18:21:54,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:21:54,140 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:21:54,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:21:54,142 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:21:54,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 18:21:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:21:54,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 18:21:54,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:21:54,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 18:21:54,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:21:54,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261490319] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:21:54,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2021-11-25 18:21:54,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5, 5] total 10 [2021-11-25 18:21:54,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964035707] [2021-11-25 18:21:54,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:21:54,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:21:54,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:21:54,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:21:54,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-25 18:21:54,547 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:55,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:21:55,960 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2021-11-25 18:21:55,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:21:55,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-25 18:21:55,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:21:55,962 INFO L225 Difference]: With dead ends: 33 [2021-11-25 18:21:55,962 INFO L226 Difference]: Without dead ends: 31 [2021-11-25 18:21:55,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:21:55,965 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:21:55,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 27 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 18:21:55,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-25 18:21:55,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 22. [2021-11-25 18:21:55,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:55,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-11-25 18:21:55,972 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 11 [2021-11-25 18:21:55,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:21:55,973 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-11-25 18:21:55,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:55,973 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-11-25 18:21:55,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-25 18:21:55,974 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:21:55,974 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:21:55,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2021-11-25 18:21:56,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 18:21:56,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-25 18:21:56,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:21:56,578 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:21:56,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:21:56,578 INFO L85 PathProgramCache]: Analyzing trace with hash -2121905774, now seen corresponding path program 1 times [2021-11-25 18:21:56,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:21:56,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [835981394] [2021-11-25 18:21:56,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:21:56,580 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:21:56,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:21:56,580 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:21:56,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-25 18:21:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:21:56,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 18:21:56,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:21:57,324 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 18:21:57,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:21:57,637 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 18:21:57,638 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:21:57,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [835981394] [2021-11-25 18:21:57,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [835981394] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:21:57,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1541490994] [2021-11-25 18:21:57,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:21:57,639 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 18:21:57,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 18:21:57,647 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 18:21:57,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-25 18:21:57,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:21:57,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 18:21:57,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:21:58,343 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 18:21:58,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:21:58,752 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 18:21:58,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1541490994] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:21:58,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135651805] [2021-11-25 18:21:58,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:21:58,753 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:21:58,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:21:58,753 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:21:58,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 18:21:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:21:58,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 18:21:58,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:21:59,115 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 18:21:59,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:21:59,302 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 18:21:59,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135651805] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:21:59,302 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 18:21:59,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 14 [2021-11-25 18:21:59,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625249139] [2021-11-25 18:21:59,303 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 18:21:59,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 18:21:59,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:21:59,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 18:21:59,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-25 18:21:59,305 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:07,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:07,690 INFO L93 Difference]: Finished difference Result 144 states and 188 transitions. [2021-11-25 18:22:07,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-25 18:22:07,691 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-25 18:22:07,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:07,700 INFO L225 Difference]: With dead ends: 144 [2021-11-25 18:22:07,701 INFO L226 Difference]: Without dead ends: 126 [2021-11-25 18:22:07,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=440, Invalid=1452, Unknown=0, NotChecked=0, Total=1892 [2021-11-25 18:22:07,704 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 335 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:07,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 58 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2021-11-25 18:22:07,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-11-25 18:22:07,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 112. [2021-11-25 18:22:07,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.1711711711711712) internal successors, (130), 111 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:07,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 130 transitions. [2021-11-25 18:22:07,726 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 130 transitions. Word has length 21 [2021-11-25 18:22:07,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:07,726 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 130 transitions. [2021-11-25 18:22:07,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:07,727 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 130 transitions. [2021-11-25 18:22:07,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-25 18:22:07,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:07,728 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:22:07,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-25 18:22:07,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 18:22:08,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-25 18:22:08,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 18:22:08,339 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:22:08,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:08,339 INFO L85 PathProgramCache]: Analyzing trace with hash 246668860, now seen corresponding path program 1 times [2021-11-25 18:22:08,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:22:08,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57067194] [2021-11-25 18:22:08,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:08,340 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:22:08,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:22:08,341 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:22:08,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-25 18:22:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:09,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 18:22:09,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:22:10,091 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 74 proven. 28 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-25 18:22:10,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:22:10,889 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 74 proven. 28 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-25 18:22:10,889 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:22:10,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57067194] [2021-11-25 18:22:10,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [57067194] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:22:10,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [712035500] [2021-11-25 18:22:10,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:10,890 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 18:22:10,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 18:22:10,897 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 18:22:10,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-25 18:22:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:12,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 18:22:12,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:22:12,690 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 74 proven. 28 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-25 18:22:12,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:22:13,080 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 74 proven. 28 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-25 18:22:13,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [712035500] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:22:13,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943613587] [2021-11-25 18:22:13,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:13,080 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:22:13,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:22:13,083 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:22:13,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-25 18:22:13,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:13,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 18:22:13,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:22:14,480 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-25 18:22:14,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:22:15,333 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-25 18:22:15,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943613587] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:22:15,333 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 18:22:15,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 5, 5] total 20 [2021-11-25 18:22:15,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61639790] [2021-11-25 18:22:15,334 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 18:22:15,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-25 18:22:15,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:22:15,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-25 18:22:15,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:22:15,336 INFO L87 Difference]: Start difference. First operand 112 states and 130 transitions. Second operand has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:29,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:29,655 INFO L93 Difference]: Finished difference Result 257 states and 314 transitions. [2021-11-25 18:22:29,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-25 18:22:29,656 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-25 18:22:29,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:29,657 INFO L225 Difference]: With dead ends: 257 [2021-11-25 18:22:29,657 INFO L226 Difference]: Without dead ends: 0 [2021-11-25 18:22:29,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=529, Invalid=1823, Unknown=0, NotChecked=0, Total=2352 [2021-11-25 18:22:29,661 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 224 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:29,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 18 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2021-11-25 18:22:29,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-25 18:22:29,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-25 18:22:29,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:29,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-25 18:22:29,663 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2021-11-25 18:22:29,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:29,664 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-25 18:22:29,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:29,664 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-25 18:22:29,665 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-25 18:22:29,667 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 18:22:29,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-25 18:22:29,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-25 18:22:30,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-25 18:22:30,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:22:30,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-25 18:22:31,641 INFO L858 garLoopResultBuilder]: For program point L93-2(lines 93 104) no Hoare annotation was computed. [2021-11-25 18:22:31,641 INFO L854 garLoopResultBuilder]: At program point L93-3(lines 93 104) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~n~0#1| (_ bv5 32)))) (or (and (= |ULTIMATE.start_main_~i~0#1| (_ bv0 32)) .cse0) (and (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) (bvslt |ULTIMATE.start_main_~i~0#1| (_ bv50 32)) .cse0))) [2021-11-25 18:22:31,641 INFO L858 garLoopResultBuilder]: For program point L93-4(lines 93 104) no Hoare annotation was computed. [2021-11-25 18:22:31,642 INFO L858 garLoopResultBuilder]: For program point L118-2(lines 118 136) no Hoare annotation was computed. [2021-11-25 18:22:31,642 INFO L854 garLoopResultBuilder]: At program point L118-3(lines 118 136) the Hoare annotation is: (= |ULTIMATE.start_main_~n~0#1| (_ bv5 32)) [2021-11-25 18:22:31,642 INFO L858 garLoopResultBuilder]: For program point L118-4(lines 118 136) no Hoare annotation was computed. [2021-11-25 18:22:31,642 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-25 18:22:31,642 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-25 18:22:31,643 INFO L854 garLoopResultBuilder]: At program point L153(lines 111 155) the Hoare annotation is: (= |ULTIMATE.start_main_~n~0#1| (_ bv5 32)) [2021-11-25 18:22:31,643 INFO L858 garLoopResultBuilder]: For program point L120(line 120) no Hoare annotation was computed. [2021-11-25 18:22:31,643 INFO L858 garLoopResultBuilder]: For program point L129-2(lines 129 135) no Hoare annotation was computed. [2021-11-25 18:22:31,643 INFO L858 garLoopResultBuilder]: For program point L96-2(lines 96 101) no Hoare annotation was computed. [2021-11-25 18:22:31,643 INFO L854 garLoopResultBuilder]: At program point L129-3(lines 129 135) the Hoare annotation is: (= |ULTIMATE.start_main_~n~0#1| (_ bv5 32)) [2021-11-25 18:22:31,643 INFO L854 garLoopResultBuilder]: At program point L96-3(lines 96 101) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~n~0#1| (_ bv5 32)))) (or (and (= |ULTIMATE.start_main_~i~0#1| (_ bv0 32)) .cse0) (and (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) (bvslt |ULTIMATE.start_main_~i~0#1| (_ bv50 32)) .cse0 (bvslt (bvadd |ULTIMATE.start_main_~i~0#1| (_ bv1 32)) (_ bv50 32))))) [2021-11-25 18:22:31,643 INFO L858 garLoopResultBuilder]: For program point L96-4(lines 96 101) no Hoare annotation was computed. [2021-11-25 18:22:31,644 INFO L858 garLoopResultBuilder]: For program point L121-2(lines 121 128) no Hoare annotation was computed. [2021-11-25 18:22:31,644 INFO L854 garLoopResultBuilder]: At program point L121-3(lines 121 128) the Hoare annotation is: (= |ULTIMATE.start_main_~n~0#1| (_ bv5 32)) [2021-11-25 18:22:31,644 INFO L858 garLoopResultBuilder]: For program point L121-4(lines 121 128) no Hoare annotation was computed. [2021-11-25 18:22:31,644 INFO L858 garLoopResultBuilder]: For program point L80(lines 80 81) no Hoare annotation was computed. [2021-11-25 18:22:31,644 INFO L858 garLoopResultBuilder]: For program point L146-2(lines 146 152) no Hoare annotation was computed. [2021-11-25 18:22:31,644 INFO L854 garLoopResultBuilder]: At program point L146-3(lines 146 152) the Hoare annotation is: (= |ULTIMATE.start_main_~n~0#1| (_ bv5 32)) [2021-11-25 18:22:31,644 INFO L858 garLoopResultBuilder]: For program point L80-2(lines 80 81) no Hoare annotation was computed. [2021-11-25 18:22:31,645 INFO L858 garLoopResultBuilder]: For program point L146-4(lines 146 152) no Hoare annotation was computed. [2021-11-25 18:22:31,645 INFO L858 garLoopResultBuilder]: For program point L138-2(lines 138 144) no Hoare annotation was computed. [2021-11-25 18:22:31,645 INFO L854 garLoopResultBuilder]: At program point L138-3(lines 138 144) the Hoare annotation is: (= |ULTIMATE.start_main_~n~0#1| (_ bv5 32)) [2021-11-25 18:22:31,645 INFO L858 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-11-25 18:22:31,645 INFO L858 garLoopResultBuilder]: For program point L138-4(lines 138 144) no Hoare annotation was computed. [2021-11-25 18:22:31,645 INFO L854 garLoopResultBuilder]: At program point L6-2(lines 5 10) the Hoare annotation is: (let ((.cse1 (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32))) (.cse0 (= |ULTIMATE.start_main_~i~0#1| (_ bv0 32))) (.cse2 (= |ULTIMATE.start_main_~n~0#1| (_ bv5 32)))) (or (and (not .cse0) .cse1 (bvslt |ULTIMATE.start_main_~i~0#1| (_ bv50 32)) .cse2 (bvslt (bvadd |ULTIMATE.start_main_~i~0#1| (_ bv1 32)) (_ bv50 32))) (and .cse1 .cse0 (not (= |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~i~0#1|)) .cse2))) [2021-11-25 18:22:31,646 INFO L858 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-11-25 18:22:31,646 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-25 18:22:31,646 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2021-11-25 18:22:31,646 INFO L854 garLoopResultBuilder]: At program point L82(lines 76 83) the Hoare annotation is: (= |ULTIMATE.start_main_~n~0#1| (_ bv5 32)) [2021-11-25 18:22:31,646 INFO L858 garLoopResultBuilder]: For program point L99(line 99) no Hoare annotation was computed. [2021-11-25 18:22:31,646 INFO L858 garLoopResultBuilder]: For program point L132-2(lines 132 133) no Hoare annotation was computed. [2021-11-25 18:22:31,646 INFO L858 garLoopResultBuilder]: For program point L99-2(line 99) no Hoare annotation was computed. [2021-11-25 18:22:31,647 INFO L854 garLoopResultBuilder]: At program point L132-3(lines 132 133) the Hoare annotation is: (= |ULTIMATE.start_main_~n~0#1| (_ bv5 32)) [2021-11-25 18:22:31,647 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-25 18:22:31,647 INFO L858 garLoopResultBuilder]: For program point L132-4(lines 132 133) no Hoare annotation was computed. [2021-11-25 18:22:31,647 INFO L858 garLoopResultBuilder]: For program point L124(lines 124 126) no Hoare annotation was computed. [2021-11-25 18:22:31,647 INFO L858 garLoopResultBuilder]: For program point L124-1(lines 124 126) no Hoare annotation was computed. [2021-11-25 18:22:31,647 INFO L858 garLoopResultBuilder]: For program point L149-2(lines 149 150) no Hoare annotation was computed. [2021-11-25 18:22:31,647 INFO L854 garLoopResultBuilder]: At program point L149-3(lines 149 150) the Hoare annotation is: (= |ULTIMATE.start_main_~n~0#1| (_ bv5 32)) [2021-11-25 18:22:31,648 INFO L858 garLoopResultBuilder]: For program point L149-4(lines 149 150) no Hoare annotation was computed. [2021-11-25 18:22:31,648 INFO L854 garLoopResultBuilder]: At program point L108(lines 85 109) the Hoare annotation is: (= |ULTIMATE.start_main_~n~0#1| (_ bv5 32)) [2021-11-25 18:22:31,648 INFO L858 garLoopResultBuilder]: For program point L141-2(lines 141 142) no Hoare annotation was computed. [2021-11-25 18:22:31,648 INFO L854 garLoopResultBuilder]: At program point L141-3(lines 141 142) the Hoare annotation is: (= |ULTIMATE.start_main_~n~0#1| (_ bv5 32)) [2021-11-25 18:22:31,648 INFO L858 garLoopResultBuilder]: For program point L141-4(lines 141 142) no Hoare annotation was computed. [2021-11-25 18:22:31,648 INFO L858 garLoopResultBuilder]: For program point L125-2(lines 125 126) no Hoare annotation was computed. [2021-11-25 18:22:31,648 INFO L854 garLoopResultBuilder]: At program point L125-3(lines 125 126) the Hoare annotation is: (= |ULTIMATE.start_main_~n~0#1| (_ bv5 32)) [2021-11-25 18:22:31,648 INFO L858 garLoopResultBuilder]: For program point L117(line 117) no Hoare annotation was computed. [2021-11-25 18:22:31,652 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-25 18:22:31,653 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 18:22:31,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:22:31 BoogieIcfgContainer [2021-11-25 18:22:31,670 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 18:22:31,671 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 18:22:31,671 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 18:22:31,671 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 18:22:31,672 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:21:50" (3/4) ... [2021-11-25 18:22:31,674 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-25 18:22:31,687 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-11-25 18:22:31,688 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-25 18:22:31,688 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-25 18:22:31,689 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-25 18:22:31,737 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 18:22:31,737 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 18:22:31,738 INFO L158 Benchmark]: Toolchain (without parser) took 58178.91ms. Allocated memory is still 79.7MB. Free memory was 45.8MB in the beginning and 44.8MB in the end (delta: 995.9kB). Peak memory consumption was 2.7MB. Max. memory is 16.1GB. [2021-11-25 18:22:31,738 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 79.7MB. Free memory is still 62.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:22:31,738 INFO L158 Benchmark]: CACSL2BoogieTranslator took 349.58ms. Allocated memory is still 79.7MB. Free memory was 45.5MB in the beginning and 60.6MB in the end (delta: -15.1MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2021-11-25 18:22:31,739 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.12ms. Allocated memory is still 79.7MB. Free memory was 60.4MB in the beginning and 58.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:22:31,739 INFO L158 Benchmark]: Boogie Preprocessor took 40.51ms. Allocated memory is still 79.7MB. Free memory was 58.0MB in the beginning and 55.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:22:31,740 INFO L158 Benchmark]: RCFGBuilder took 16279.69ms. Allocated memory is still 79.7MB. Free memory was 55.9MB in the beginning and 36.4MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-25 18:22:31,740 INFO L158 Benchmark]: TraceAbstraction took 41387.00ms. Allocated memory is still 79.7MB. Free memory was 35.8MB in the beginning and 49.6MB in the end (delta: -13.8MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2021-11-25 18:22:31,741 INFO L158 Benchmark]: Witness Printer took 66.60ms. Allocated memory is still 79.7MB. Free memory was 49.6MB in the beginning and 44.8MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-25 18:22:31,743 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 79.7MB. Free memory is still 62.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 349.58ms. Allocated memory is still 79.7MB. Free memory was 45.5MB in the beginning and 60.6MB in the end (delta: -15.1MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.12ms. Allocated memory is still 79.7MB. Free memory was 60.4MB in the beginning and 58.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.51ms. Allocated memory is still 79.7MB. Free memory was 58.0MB in the beginning and 55.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 16279.69ms. Allocated memory is still 79.7MB. Free memory was 55.9MB in the beginning and 36.4MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 41387.00ms. Allocated memory is still 79.7MB. Free memory was 35.8MB in the beginning and 49.6MB in the end (delta: -13.8MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. * Witness Printer took 66.60ms. Allocated memory is still 79.7MB. Free memory was 49.6MB in the beginning and 44.8MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 41.3s, OverallIterations: 4, TraceHistogramMax: 8, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 25.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 639 SdHoareTripleChecker+Valid, 20.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 639 mSDsluCounter, 215 SdHoareTripleChecker+Invalid, 19.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 135 mSDsCounter, 177 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 893 IncrementalHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 177 mSolverCounterUnsat, 80 mSDtfsCounter, 893 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 500 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1013 ImplicationChecksByTransitivity, 7.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=3, InterpolantAutomatonStates: 74, 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, 26 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 15 PreInvPairs, 71 NumberOfFragments, 111 HoareAnnotationTreeSize, 15 FomulaSimplifications, 364 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 15 FomulaSimplificationsInter, 797 FormulaSimplificationTreeSizeReductionInter, 1.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 3.8s SatisfiabilityAnalysisTime, 7.6s InterpolantComputationTime, 238 NumberOfCodeBlocks, 238 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 440 ConstructedInterpolants, 0 QuantifiedInterpolants, 1363 SizeOfPredicates, 20 NumberOfNonLiveVariables, 880 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 18 InterpolantComputations, 2 PerfectInterpolantSequences, 583/869 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: ((((!(i == 0bv32) && cond == 1bv32) && ~bvslt32(i, 50bv32)) && n == 5bv32) && ~bvslt32(~bvadd64(i, 1bv32), 50bv32)) || (((cond == 1bv32 && i == 0bv32) && !(j == i)) && n == 5bv32) - InvariantResult [Line: 93]: Loop Invariant Derived loop invariant: (i == 0bv32 && n == 5bv32) || ((cond == 1bv32 && ~bvslt32(i, 50bv32)) && n == 5bv32) - InvariantResult [Line: 129]: Loop Invariant Derived loop invariant: n == 5bv32 - InvariantResult [Line: 118]: Loop Invariant Derived loop invariant: n == 5bv32 - InvariantResult [Line: 85]: Loop Invariant Derived loop invariant: n == 5bv32 - InvariantResult [Line: 125]: Loop Invariant Derived loop invariant: n == 5bv32 - InvariantResult [Line: 76]: Loop Invariant Derived loop invariant: n == 5bv32 - InvariantResult [Line: 149]: Loop Invariant Derived loop invariant: n == 5bv32 - InvariantResult [Line: 111]: Loop Invariant Derived loop invariant: n == 5bv32 - InvariantResult [Line: 146]: Loop Invariant Derived loop invariant: n == 5bv32 - InvariantResult [Line: 96]: Loop Invariant Derived loop invariant: (i == 0bv32 && n == 5bv32) || (((cond == 1bv32 && ~bvslt32(i, 50bv32)) && n == 5bv32) && ~bvslt32(~bvadd64(i, 1bv32), 50bv32)) - InvariantResult [Line: 138]: Loop Invariant Derived loop invariant: n == 5bv32 - InvariantResult [Line: 132]: Loop Invariant Derived loop invariant: n == 5bv32 - InvariantResult [Line: 141]: Loop Invariant Derived loop invariant: n == 5bv32 - InvariantResult [Line: 121]: Loop Invariant Derived loop invariant: n == 5bv32 RESULT: Ultimate proved your program to be correct! [2021-11-25 18:22:31,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16d1119-18f3-4307-9105-4c7cfc23b023/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE