./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/fo_test.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/fo_test.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V --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 311e8ee9583d2ef90ad7c5b34825dcb05dcd1a4fef3a842e7a9948bf014d4ce2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:11:13,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:11:13,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:11:13,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:11:13,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:11:13,833 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:11:13,835 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:11:13,839 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:11:13,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:11:13,850 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:11:13,851 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:11:13,853 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:11:13,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:11:13,856 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:11:13,859 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:11:13,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:11:13,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:11:13,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:11:13,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:11:13,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:11:13,879 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:11:13,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:11:13,888 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:11:13,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:11:13,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:11:13,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:11:13,899 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:11:13,902 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:11:13,902 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:11:13,904 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:11:13,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:11:13,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:11:13,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:11:13,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:11:13,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:11:13,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:11:13,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:11:13,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:11:13,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:11:13,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:11:13,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:11:13,915 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:11:13,958 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:11:13,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:11:13,959 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:11:13,960 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:11:13,961 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:11:13,961 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:11:13,961 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:11:13,961 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:11:13,962 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:11:13,962 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:11:13,963 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:11:13,963 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:11:13,964 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:11:13,964 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:11:13,964 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:11:13,964 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:11:13,965 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:11:13,965 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:11:13,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:11:13,966 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:11:13,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:11:13,967 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:11:13,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:11:13,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:11:13,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:11:13,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:11:13,969 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:11:13,969 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:11:13,970 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:11:13,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:11:13,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:11:13,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:11:13,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:11:13,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:11:13,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:11:13,972 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:11:13,972 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:11:13,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:11:13,972 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:11:13,973 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:11:13,973 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:11:13,973 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_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 311e8ee9583d2ef90ad7c5b34825dcb05dcd1a4fef3a842e7a9948bf014d4ce2 [2021-11-23 02:11:14,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:11:14,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:11:14,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:11:14,347 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:11:14,348 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:11:14,349 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-regression/fo_test.i [2021-11-23 02:11:14,437 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/data/8ce91acc4/6d4d015ec4704817bf04972986726f0a/FLAGc7ce77c90 [2021-11-23 02:11:15,075 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:11:15,076 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/sv-benchmarks/c/ldv-regression/fo_test.i [2021-11-23 02:11:15,108 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/data/8ce91acc4/6d4d015ec4704817bf04972986726f0a/FLAGc7ce77c90 [2021-11-23 02:11:15,346 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/data/8ce91acc4/6d4d015ec4704817bf04972986726f0a [2021-11-23 02:11:15,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:11:15,352 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:11:15,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:11:15,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:11:15,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:11:15,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:11:15" (1/1) ... [2021-11-23 02:11:15,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ead0d69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:15, skipping insertion in model container [2021-11-23 02:11:15,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:11:15" (1/1) ... [2021-11-23 02:11:15,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:11:15,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:11:15,884 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_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/sv-benchmarks/c/ldv-regression/fo_test.i[40440,40453] [2021-11-23 02:11:15,897 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:11:15,905 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:11:15,967 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_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/sv-benchmarks/c/ldv-regression/fo_test.i[40440,40453] [2021-11-23 02:11:15,971 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:11:16,027 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:11:16,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:16 WrapperNode [2021-11-23 02:11:16,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:11:16,029 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:11:16,029 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:11:16,029 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:11:16,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:16" (1/1) ... [2021-11-23 02:11:16,061 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:16" (1/1) ... [2021-11-23 02:11:16,086 INFO L137 Inliner]: procedures = 229, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 56 [2021-11-23 02:11:16,086 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:11:16,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:11:16,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:11:16,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:11:16,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:16" (1/1) ... [2021-11-23 02:11:16,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:16" (1/1) ... [2021-11-23 02:11:16,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:16" (1/1) ... [2021-11-23 02:11:16,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:16" (1/1) ... [2021-11-23 02:11:16,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:16" (1/1) ... [2021-11-23 02:11:16,117 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:16" (1/1) ... [2021-11-23 02:11:16,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:16" (1/1) ... [2021-11-23 02:11:16,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:11:16,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:11:16,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:11:16,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:11:16,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:16" (1/1) ... [2021-11-23 02:11:16,156 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:11:16,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:11:16,177 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:11:16,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:11:16,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:11:16,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:11:16,216 INFO L130 BoogieDeclarations]: Found specification of procedure read [2021-11-23 02:11:16,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:11:16,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:11:16,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:11:16,433 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:11:16,453 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:11:16,627 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:11:16,707 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:11:16,707 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 02:11:16,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:11:16 BoogieIcfgContainer [2021-11-23 02:11:16,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:11:16,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:11:16,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:11:16,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:11:16,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:11:15" (1/3) ... [2021-11-23 02:11:16,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ab8274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:11:16, skipping insertion in model container [2021-11-23 02:11:16,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:16" (2/3) ... [2021-11-23 02:11:16,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ab8274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:11:16, skipping insertion in model container [2021-11-23 02:11:16,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:11:16" (3/3) ... [2021-11-23 02:11:16,725 INFO L111 eAbstractionObserver]: Analyzing ICFG fo_test.i [2021-11-23 02:11:16,732 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:11:16,732 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:11:16,780 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:11:16,785 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 [2021-11-23 02:11:16,786 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:11:16,798 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 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) [2021-11-23 02:11:16,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 02:11:16,803 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:11:16,803 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 02:11:16,804 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:11:16,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:11:16,810 INFO L85 PathProgramCache]: Analyzing trace with hash 68809, now seen corresponding path program 1 times [2021-11-23 02:11:16,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:11:16,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729557363] [2021-11-23 02:11:16,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:11:16,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:11:17,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:11:17,070 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 02:11:17,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:11:17,121 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-23 02:11:17,123 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 02:11:17,124 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 02:11:17,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:11:17,131 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-23 02:11:17,134 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 02:11:17,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:11:17 BoogieIcfgContainer [2021-11-23 02:11:17,162 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 02:11:17,165 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 02:11:17,165 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 02:11:17,166 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 02:11:17,166 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:11:16" (3/4) ... [2021-11-23 02:11:17,169 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 02:11:17,170 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 02:11:17,172 INFO L158 Benchmark]: Toolchain (without parser) took 1818.68ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 57.1MB in the beginning and 69.6MB in the end (delta: -12.5MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2021-11-23 02:11:17,173 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 92.3MB. Free memory was 44.1MB in the beginning and 44.0MB in the end (delta: 43.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:11:17,174 INFO L158 Benchmark]: CACSL2BoogieTranslator took 672.83ms. Allocated memory is still 92.3MB. Free memory was 56.9MB in the beginning and 53.3MB in the end (delta: 3.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 02:11:17,175 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.37ms. Allocated memory is still 92.3MB. Free memory was 53.3MB in the beginning and 50.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:11:17,180 INFO L158 Benchmark]: Boogie Preprocessor took 41.33ms. Allocated memory is still 92.3MB. Free memory was 50.9MB in the beginning and 49.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:11:17,181 INFO L158 Benchmark]: RCFGBuilder took 580.88ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 49.1MB in the beginning and 87.7MB in the end (delta: -38.6MB). Peak memory consumption was 20.3MB. Max. memory is 16.1GB. [2021-11-23 02:11:17,182 INFO L158 Benchmark]: TraceAbstraction took 450.25ms. Allocated memory is still 117.4MB. Free memory was 87.7MB in the beginning and 69.6MB in the end (delta: 18.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-23 02:11:17,182 INFO L158 Benchmark]: Witness Printer took 4.91ms. Allocated memory is still 117.4MB. Free memory is still 69.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:11:17,193 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 92.3MB. Free memory was 44.1MB in the beginning and 44.0MB in the end (delta: 43.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 672.83ms. Allocated memory is still 92.3MB. Free memory was 56.9MB in the beginning and 53.3MB in the end (delta: 3.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.37ms. Allocated memory is still 92.3MB. Free memory was 53.3MB in the beginning and 50.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.33ms. Allocated memory is still 92.3MB. Free memory was 50.9MB in the beginning and 49.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 580.88ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 49.1MB in the beginning and 87.7MB in the end (delta: -38.6MB). Peak memory consumption was 20.3MB. Max. memory is 16.1GB. * TraceAbstraction took 450.25ms. Allocated memory is still 117.4MB. Free memory was 87.7MB in the beginning and 69.6MB in the end (delta: 18.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 4.91ms. Allocated memory is still 117.4MB. Free memory is still 69.6MB. There was no memory consumed. 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 - UnprovableResult [Line: 980]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 992. Possible FailurePath: [L987] int globalState = 0; [L992] CALL, EXPR l_open("unknown",00) [L1002] CALL, EXPR open(file,flags) [L985] return __VERIFIER_nondet_int(); [L1002] RET, EXPR open(file,flags) [L1002] int fd = open(file,flags); [L1003] COND FALSE !(fd>0) [L1004] return fd; [L992] RET, EXPR l_open("unknown",00) [L992] int file = l_open("unknown",00); [L993] void* cbuf = (void*) malloc(sizeof(char)*100); [L994] CALL l_read(file,cbuf,99) [L998] (globalState == 1) ? (0) : __blast_assert () [L998] CALL __blast_assert () [L980] reach_error() VAL [globalState=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-23 02:11:17,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/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 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_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/fo_test.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V --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 311e8ee9583d2ef90ad7c5b34825dcb05dcd1a4fef3a842e7a9948bf014d4ce2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:11:19,714 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:11:19,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:11:19,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:11:19,751 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:11:19,753 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:11:19,754 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:11:19,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:11:19,759 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:11:19,760 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:11:19,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:11:19,762 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:11:19,763 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:11:19,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:11:19,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:11:19,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:11:19,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:11:19,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:11:19,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:11:19,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:11:19,783 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:11:19,784 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:11:19,786 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:11:19,788 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:11:19,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:11:19,796 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:11:19,797 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:11:19,799 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:11:19,800 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:11:19,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:11:19,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:11:19,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:11:19,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:11:19,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:11:19,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:11:19,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:11:19,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:11:19,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:11:19,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:11:19,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:11:19,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:11:19,813 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 02:11:19,867 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:11:19,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:11:19,868 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:11:19,868 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:11:19,869 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:11:19,869 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:11:19,869 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:11:19,869 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:11:19,870 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:11:19,870 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:11:19,870 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:11:19,870 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:11:19,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:11:19,877 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:11:19,877 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:11:19,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:11:19,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:11:19,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:11:19,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:11:19,878 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 02:11:19,878 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 02:11:19,878 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 02:11:19,878 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:11:19,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:11:19,879 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:11:19,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:11:19,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:11:19,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 02:11:19,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:11:19,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:11:19,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:11:19,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:11:19,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:11:19,881 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 02:11:19,881 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 02:11:19,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:11:19,882 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:11:19,882 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:11:19,882 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_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 311e8ee9583d2ef90ad7c5b34825dcb05dcd1a4fef3a842e7a9948bf014d4ce2 [2021-11-23 02:11:20,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:11:20,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:11:20,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:11:20,267 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:11:20,267 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:11:20,269 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-regression/fo_test.i [2021-11-23 02:11:20,340 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/data/203b7342e/8ef1c6f0b4d649c38b9c75f65931252e/FLAG5007964c1 [2021-11-23 02:11:20,950 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:11:20,954 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/sv-benchmarks/c/ldv-regression/fo_test.i [2021-11-23 02:11:20,979 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/data/203b7342e/8ef1c6f0b4d649c38b9c75f65931252e/FLAG5007964c1 [2021-11-23 02:11:21,200 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/data/203b7342e/8ef1c6f0b4d649c38b9c75f65931252e [2021-11-23 02:11:21,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:11:21,205 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:11:21,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:11:21,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:11:21,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:11:21,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:11:21" (1/1) ... [2021-11-23 02:11:21,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78884132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:21, skipping insertion in model container [2021-11-23 02:11:21,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:11:21" (1/1) ... [2021-11-23 02:11:21,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:11:21,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:11:21,811 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_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/sv-benchmarks/c/ldv-regression/fo_test.i[40440,40453] [2021-11-23 02:11:21,831 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:11:21,852 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:11:21,918 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_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/sv-benchmarks/c/ldv-regression/fo_test.i[40440,40453] [2021-11-23 02:11:21,925 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:11:22,006 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:11:22,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:22 WrapperNode [2021-11-23 02:11:22,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:11:22,008 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:11:22,008 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:11:22,008 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:11:22,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:22" (1/1) ... [2021-11-23 02:11:22,056 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:22" (1/1) ... [2021-11-23 02:11:22,096 INFO L137 Inliner]: procedures = 230, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 52 [2021-11-23 02:11:22,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:11:22,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:11:22,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:11:22,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:11:22,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:22" (1/1) ... [2021-11-23 02:11:22,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:22" (1/1) ... [2021-11-23 02:11:22,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:22" (1/1) ... [2021-11-23 02:11:22,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:22" (1/1) ... [2021-11-23 02:11:22,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:22" (1/1) ... [2021-11-23 02:11:22,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:22" (1/1) ... [2021-11-23 02:11:22,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:22" (1/1) ... [2021-11-23 02:11:22,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:11:22,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:11:22,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:11:22,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:11:22,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:22" (1/1) ... [2021-11-23 02:11:22,199 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:11:22,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:11:22,230 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:11:22,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:11:22,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 02:11:22,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:11:22,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:11:22,281 INFO L130 BoogieDeclarations]: Found specification of procedure read [2021-11-23 02:11:22,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:11:22,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:11:22,639 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:11:22,641 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:11:22,810 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:11:22,816 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:11:22,816 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 02:11:22,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:11:22 BoogieIcfgContainer [2021-11-23 02:11:22,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:11:22,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:11:22,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:11:22,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:11:22,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:11:21" (1/3) ... [2021-11-23 02:11:22,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d60997f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:11:22, skipping insertion in model container [2021-11-23 02:11:22,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:22" (2/3) ... [2021-11-23 02:11:22,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d60997f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:11:22, skipping insertion in model container [2021-11-23 02:11:22,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:11:22" (3/3) ... [2021-11-23 02:11:22,826 INFO L111 eAbstractionObserver]: Analyzing ICFG fo_test.i [2021-11-23 02:11:22,831 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:11:22,832 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:11:22,880 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:11:22,887 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 [2021-11-23 02:11:22,887 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:11:22,901 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 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) [2021-11-23 02:11:22,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 02:11:22,906 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:11:22,907 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:11:22,908 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:11:22,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:11:22,913 INFO L85 PathProgramCache]: Analyzing trace with hash 88874922, now seen corresponding path program 1 times [2021-11-23 02:11:22,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:11:22,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [519748910] [2021-11-23 02:11:22,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:11:22,929 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:11:22,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:11:22,932 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:11:22,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 02:11:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:11:23,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:11:23,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:11:23,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:11:23,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:11:23,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:11:23,181 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:11:23,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [519748910] [2021-11-23 02:11:23,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [519748910] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:11:23,182 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:11:23,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 02:11:23,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834528124] [2021-11-23 02:11:23,185 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:11:23,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:11:23,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:11:23,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:11:23,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:11:23,219 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 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) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-11-23 02:11:23,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:11:23,243 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2021-11-23 02:11:23,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:11:23,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2021-11-23 02:11:23,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:11:23,253 INFO L225 Difference]: With dead ends: 25 [2021-11-23 02:11:23,253 INFO L226 Difference]: Without dead ends: 9 [2021-11-23 02:11:23,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:11:23,260 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:11:23,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 19 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:11:23,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-23 02:11:23,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-23 02:11:23,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 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) [2021-11-23 02:11:23,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-11-23 02:11:23,290 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-11-23 02:11:23,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:11:23,291 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-11-23 02:11:23,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-11-23 02:11:23,291 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-11-23 02:11:23,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 02:11:23,292 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:11:23,292 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:11:23,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:11:23,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:11:23,507 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:11:23,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:11:23,508 INFO L85 PathProgramCache]: Analyzing trace with hash 90721964, now seen corresponding path program 1 times [2021-11-23 02:11:23,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:11:23,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790996405] [2021-11-23 02:11:23,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:11:23,510 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:11:23,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:11:23,511 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:11:23,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 02:11:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:11:23,640 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 02:11:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:11:23,711 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-23 02:11:23,712 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 02:11:23,713 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 02:11:23,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:11:23,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:11:23,920 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-23 02:11:23,923 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 02:11:23,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:11:23 BoogieIcfgContainer [2021-11-23 02:11:23,967 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 02:11:23,969 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 02:11:23,969 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 02:11:23,969 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 02:11:23,970 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:11:22" (3/4) ... [2021-11-23 02:11:23,976 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 02:11:23,977 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 02:11:23,980 INFO L158 Benchmark]: Toolchain (without parser) took 2772.77ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 32.8MB in the beginning and 40.1MB in the end (delta: -7.4MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2021-11-23 02:11:23,984 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 56.6MB. Free memory was 37.7MB in the beginning and 37.6MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:11:23,990 INFO L158 Benchmark]: CACSL2BoogieTranslator took 796.20ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 32.5MB in the beginning and 45.4MB in the end (delta: -12.9MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. [2021-11-23 02:11:23,992 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.44ms. Allocated memory is still 69.2MB. Free memory was 45.4MB in the beginning and 42.7MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 02:11:23,994 INFO L158 Benchmark]: Boogie Preprocessor took 83.19ms. Allocated memory is still 69.2MB. Free memory was 42.7MB in the beginning and 40.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:11:23,994 INFO L158 Benchmark]: RCFGBuilder took 636.56ms. Allocated memory is still 69.2MB. Free memory was 40.2MB in the beginning and 40.8MB in the end (delta: -620.2kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 02:11:23,996 INFO L158 Benchmark]: TraceAbstraction took 1147.54ms. Allocated memory is still 69.2MB. Free memory was 40.2MB in the beginning and 40.5MB in the end (delta: -231.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:11:23,996 INFO L158 Benchmark]: Witness Printer took 8.69ms. Allocated memory is still 69.2MB. Free memory was 40.5MB in the beginning and 40.1MB in the end (delta: 349.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:11:24,002 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 56.6MB. Free memory was 37.7MB in the beginning and 37.6MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 796.20ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 32.5MB in the beginning and 45.4MB in the end (delta: -12.9MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.44ms. Allocated memory is still 69.2MB. Free memory was 45.4MB in the beginning and 42.7MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 83.19ms. Allocated memory is still 69.2MB. Free memory was 42.7MB in the beginning and 40.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 636.56ms. Allocated memory is still 69.2MB. Free memory was 40.2MB in the beginning and 40.8MB in the end (delta: -620.2kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1147.54ms. Allocated memory is still 69.2MB. Free memory was 40.2MB in the beginning and 40.5MB in the end (delta: -231.6kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 8.69ms. Allocated memory is still 69.2MB. Free memory was 40.5MB in the beginning and 40.1MB in the end (delta: 349.1kB). There was no memory consumed. 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 - UnprovableResult [Line: 980]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 992. Possible FailurePath: [L987] int globalState = 0; VAL [globalState=0] [L992] CALL, EXPR l_open("unknown",00) [L1002] CALL, EXPR open(file,flags) [L985] return __VERIFIER_nondet_int(); [L1002] RET, EXPR open(file,flags) [L1002] int fd = open(file,flags); [L1003] COND FALSE !(fd>0) VAL [\old(flags)=0, fd=0, file={4:0}, file={4:0}, flags=0, globalState=0] [L1004] return fd; VAL [\old(flags)=0, \result=0, fd=0, file={4:0}, file={4:0}, flags=0, globalState=0] [L992] RET, EXPR l_open("unknown",00) [L992] int file = l_open("unknown",00); [L993] void* cbuf = (void*) malloc(sizeof(char)*100); [L994] CALL l_read(file,cbuf,99) [L998] (globalState == 1) ? (0) : __blast_assert () [L998] CALL __blast_assert () [L980] reach_error() VAL [globalState=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 13 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 26 SizeOfPredicates, 0 NumberOfNonLiveVariables, 57 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-23 02:11:24,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc543f5-1b5b-43ba-b189-10c0ae0361a5/bin/utaipan-EQgc7hIp5V/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: UNKNOWN: Overapproximated counterexample