./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/pc_sfifo_1.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ef711286-f8f3-4869-8b9a-f4df1715d1f2/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ef711286-f8f3-4869-8b9a-f4df1715d1f2/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ef711286-f8f3-4869-8b9a-f4df1715d1f2/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ef711286-f8f3-4869-8b9a-f4df1715d1f2/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/pc_sfifo_1.cil-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ef711286-f8f3-4869-8b9a-f4df1715d1f2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ef711286-f8f3-4869-8b9a-f4df1715d1f2/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b60d0a2361544de13d982747fad9d912bc87905e .............................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 19:34:08,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 19:34:08,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 19:34:08,876 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 19:34:08,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 19:34:08,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 19:34:08,879 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 19:34:08,882 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 19:34:08,883 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 19:34:08,884 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 19:34:08,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 19:34:08,887 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 19:34:08,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 19:34:08,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 19:34:08,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 19:34:08,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 19:34:08,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 19:34:08,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 19:34:08,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 19:34:08,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 19:34:08,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 19:34:08,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 19:34:08,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 19:34:08,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 19:34:08,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 19:34:08,907 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 19:34:08,907 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 19:34:08,908 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 19:34:08,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 19:34:08,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 19:34:08,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 19:34:08,910 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 19:34:08,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 19:34:08,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 19:34:08,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 19:34:08,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 19:34:08,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 19:34:08,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 19:34:08,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 19:34:08,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 19:34:08,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 19:34:08,916 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ef711286-f8f3-4869-8b9a-f4df1715d1f2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 19:34:08,938 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 19:34:08,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 19:34:08,938 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 19:34:08,939 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 19:34:08,939 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 19:34:08,939 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 19:34:08,939 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 19:34:08,939 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 19:34:08,939 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 19:34:08,939 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 19:34:08,939 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 19:34:08,940 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 19:34:08,940 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 19:34:08,940 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 19:34:08,940 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 19:34:08,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 19:34:08,941 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 19:34:08,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 19:34:08,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 19:34:08,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 19:34:08,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 19:34:08,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 19:34:08,942 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 19:34:08,942 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 19:34:08,942 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 19:34:08,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 19:34:08,942 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 19:34:08,942 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 19:34:08,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 19:34:08,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 19:34:08,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:34:08,943 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 19:34:08,943 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 19:34:08,943 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 19:34:08,943 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 19:34:08,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 19:34:08,943 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 19:34:08,944 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 19:34:08,944 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 19:34:08,944 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_ef711286-f8f3-4869-8b9a-f4df1715d1f2/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ef711286-f8f3-4869-8b9a-f4df1715d1f2/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b60d0a2361544de13d982747fad9d912bc87905e [2020-12-09 19:34:09,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 19:34:09,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 19:34:09,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 19:34:09,156 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 19:34:09,157 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 19:34:09,157 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ef711286-f8f3-4869-8b9a-f4df1715d1f2/bin/utaipan/../../sv-benchmarks/c/systemc/pc_sfifo_1.cil-1.c [2020-12-09 19:34:09,197 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ef711286-f8f3-4869-8b9a-f4df1715d1f2/bin/utaipan/data/b19db0d83/6c600f1612564481a0dac45891ac373a/FLAGb3424fa42 [2020-12-09 19:34:09,556 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 19:34:09,557 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ef711286-f8f3-4869-8b9a-f4df1715d1f2/sv-benchmarks/c/systemc/pc_sfifo_1.cil-1.c [2020-12-09 19:34:09,564 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ef711286-f8f3-4869-8b9a-f4df1715d1f2/bin/utaipan/data/b19db0d83/6c600f1612564481a0dac45891ac373a/FLAGb3424fa42 [2020-12-09 19:34:09,971 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ef711286-f8f3-4869-8b9a-f4df1715d1f2/bin/utaipan/data/b19db0d83/6c600f1612564481a0dac45891ac373a [2020-12-09 19:34:09,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 19:34:09,975 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 19:34:09,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 19:34:09,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 19:34:09,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 19:34:09,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:34:09" (1/1) ... [2020-12-09 19:34:09,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c2372ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:09, skipping insertion in model container [2020-12-09 19:34:09,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:34:09" (1/1) ... [2020-12-09 19:34:09,987 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 19:34:10,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 19:34:10,091 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_ef711286-f8f3-4869-8b9a-f4df1715d1f2/sv-benchmarks/c/systemc/pc_sfifo_1.cil-1.c[337,350] [2020-12-09 19:34:10,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:34:10,123 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 19:34:10,131 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_ef711286-f8f3-4869-8b9a-f4df1715d1f2/sv-benchmarks/c/systemc/pc_sfifo_1.cil-1.c[337,350] [2020-12-09 19:34:10,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:34:10,168 INFO L208 MainTranslator]: Completed translation [2020-12-09 19:34:10,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:10 WrapperNode [2020-12-09 19:34:10,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 19:34:10,169 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 19:34:10,169 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 19:34:10,169 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 19:34:10,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:10" (1/1) ... [2020-12-09 19:34:10,181 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:10" (1/1) ... [2020-12-09 19:34:10,198 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 19:34:10,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 19:34:10,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 19:34:10,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 19:34:10,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:10" (1/1) ... [2020-12-09 19:34:10,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:10" (1/1) ... [2020-12-09 19:34:10,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:10" (1/1) ... [2020-12-09 19:34:10,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:10" (1/1) ... [2020-12-09 19:34:10,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:10" (1/1) ... [2020-12-09 19:34:10,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:10" (1/1) ... [2020-12-09 19:34:10,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:10" (1/1) ... [2020-12-09 19:34:10,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 19:34:10,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 19:34:10,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 19:34:10,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 19:34:10,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef711286-f8f3-4869-8b9a-f4df1715d1f2/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:34:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 19:34:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 19:34:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 19:34:10,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 19:34:10,755 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 19:34:10,756 INFO L299 CfgBuilder]: Removed 44 assume(true) statements. [2020-12-09 19:34:10,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:34:10 BoogieIcfgContainer [2020-12-09 19:34:10,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 19:34:10,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 19:34:10,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 19:34:10,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 19:34:10,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:34:09" (1/3) ... [2020-12-09 19:34:10,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321bafb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:34:10, skipping insertion in model container [2020-12-09 19:34:10,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:34:10" (2/3) ... [2020-12-09 19:34:10,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321bafb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:34:10, skipping insertion in model container [2020-12-09 19:34:10,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:34:10" (3/3) ... [2020-12-09 19:34:10,766 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-1.c [2020-12-09 19:34:10,779 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 19:34:10,783 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-09 19:34:10,793 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-09 19:34:10,813 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 19:34:10,813 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 19:34:10,813 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 19:34:10,814 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 19:34:10,814 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 19:34:10,814 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 19:34:10,814 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 19:34:10,814 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 19:34:10,825 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-12-09 19:34:10,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 19:34:10,829 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:34:10,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:34:10,830 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:34:10,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:34:10,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1154330099, now seen corresponding path program 1 times [2020-12-09 19:34:10,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:34:10,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945374484] [2020-12-09 19:34:10,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:34:10,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:34:10,925 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:34:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:34:10,944 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:34:10,959 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 19:34:10,960 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 19:34:10,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 19:34:10,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:34:10 BoogieIcfgContainer [2020-12-09 19:34:10,982 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 19:34:10,982 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 19:34:10,982 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 19:34:10,983 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 19:34:10,983 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:34:10" (3/4) ... [2020-12-09 19:34:10,984 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 19:34:11,028 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ef711286-f8f3-4869-8b9a-f4df1715d1f2/bin/utaipan/witness.graphml [2020-12-09 19:34:11,028 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 19:34:11,030 INFO L168 Benchmark]: Toolchain (without parser) took 1054.14 ms. Allocated memory was 79.7 MB in the beginning and 102.8 MB in the end (delta: 23.1 MB). Free memory was 56.6 MB in the beginning and 62.7 MB in the end (delta: -6.1 MB). Peak memory consumption was 16.9 MB. Max. memory is 16.1 GB. [2020-12-09 19:34:11,030 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 79.7 MB. Free memory is still 52.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:34:11,030 INFO L168 Benchmark]: CACSL2BoogieTranslator took 192.64 ms. Allocated memory is still 79.7 MB. Free memory was 56.5 MB in the beginning and 58.1 MB in the end (delta: -1.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 19:34:11,031 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.29 ms. Allocated memory is still 79.7 MB. Free memory was 58.1 MB in the beginning and 56.1 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:34:11,031 INFO L168 Benchmark]: Boogie Preprocessor took 20.38 ms. Allocated memory is still 79.7 MB. Free memory was 56.1 MB in the beginning and 54.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:34:11,032 INFO L168 Benchmark]: RCFGBuilder took 538.37 ms. Allocated memory was 79.7 MB in the beginning and 102.8 MB in the end (delta: 23.1 MB). Free memory was 54.3 MB in the beginning and 79.5 MB in the end (delta: -25.2 MB). Peak memory consumption was 32.6 MB. Max. memory is 16.1 GB. [2020-12-09 19:34:11,032 INFO L168 Benchmark]: TraceAbstraction took 222.12 ms. Allocated memory is still 102.8 MB. Free memory was 79.5 MB in the beginning and 65.7 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 19:34:11,033 INFO L168 Benchmark]: Witness Printer took 45.78 ms. Allocated memory is still 102.8 MB. Free memory was 65.7 MB in the beginning and 62.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:34:11,035 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 79.7 MB. Free memory is still 52.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 192.64 ms. Allocated memory is still 79.7 MB. Free memory was 56.5 MB in the beginning and 58.1 MB in the end (delta: -1.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.29 ms. Allocated memory is still 79.7 MB. Free memory was 58.1 MB in the beginning and 56.1 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.38 ms. Allocated memory is still 79.7 MB. Free memory was 56.1 MB in the beginning and 54.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 538.37 ms. Allocated memory was 79.7 MB in the beginning and 102.8 MB in the end (delta: 23.1 MB). Free memory was 54.3 MB in the beginning and 79.5 MB in the end (delta: -25.2 MB). Peak memory consumption was 32.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 222.12 ms. Allocated memory is still 102.8 MB. Free memory was 79.5 MB in the beginning and 65.7 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 45.78 ms. Allocated memory is still 102.8 MB. Free memory was 65.7 MB in the beginning and 62.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 11]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] int q_buf_0 ; [L17] int q_free ; [L18] int q_read_ev ; [L19] int q_write_ev ; [L20] int p_num_write ; [L21] int p_last_write ; [L22] int p_dw_st ; [L23] int p_dw_pc ; [L24] int p_dw_i ; [L25] int c_num_read ; [L26] int c_last_read ; [L27] int c_dr_st ; [L28] int c_dr_pc ; [L29] int c_dr_i ; [L136] static int a_t ; [L352] int __retres1 ; [L338] q_free = 1 [L339] q_write_ev = 2 [L340] q_read_ev = q_write_ev [L341] p_num_write = 0 [L342] p_dw_pc = 0 [L343] p_dw_i = 1 [L344] c_num_read = 0 [L345] c_dr_pc = 0 [L346] c_dr_i = 1 [L306] int kernel_st ; [L307] int tmp ; [L311] kernel_st = 0 [L198] COND TRUE (int )p_dw_i == 1 [L199] p_dw_st = 0 [L203] COND TRUE (int )c_dr_i == 1 [L204] c_dr_st = 0 VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L315] COND TRUE 1 [L318] kernel_st = 1 [L233] int tmp ; [L234] int tmp___0 ; [L235] int tmp___1 ; VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L239] COND TRUE 1 [L213] int __retres1 ; [L216] COND TRUE (int )p_dw_st == 0 [L217] __retres1 = 1 [L229] return (__retres1); [L242] tmp___1 = exists_runnable_thread() [L244] COND TRUE \read(tmp___1) VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L249] COND TRUE (int )p_dw_st == 0 [L251] tmp = __VERIFIER_nondet_int() [L253] COND FALSE !(\read(tmp)) VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] [L11] reach_error() VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 46 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 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 proved your program to be incorrect! Received shutdown request...