./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0bb96718-14cd-4c82-9bc8-58f0744fbe87/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0bb96718-14cd-4c82-9bc8-58f0744fbe87/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0bb96718-14cd-4c82-9bc8-58f0744fbe87/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0bb96718-14cd-4c82-9bc8-58f0744fbe87/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/pc_sfifo_1.cil-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0bb96718-14cd-4c82-9bc8-58f0744fbe87/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0bb96718-14cd-4c82-9bc8-58f0744fbe87/bin/uautomizer --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 Automizer --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-a4ecdab [2020-11-28 03:07:05,395 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:07:05,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:07:05,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:07:05,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:07:05,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:07:05,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:07:05,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:07:05,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:07:05,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:07:05,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:07:05,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:07:05,510 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:07:05,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:07:05,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:07:05,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:07:05,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:07:05,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:07:05,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:07:05,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:07:05,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:07:05,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:07:05,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:07:05,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:07:05,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:07:05,547 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:07:05,547 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:07:05,549 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:07:05,550 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:07:05,551 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:07:05,552 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:07:05,553 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:07:05,555 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:07:05,556 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:07:05,557 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:07:05,557 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:07:05,558 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:07:05,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:07:05,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:07:05,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:07:05,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:07:05,563 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0bb96718-14cd-4c82-9bc8-58f0744fbe87/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:07:05,606 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:07:05,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:07:05,608 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:07:05,608 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:07:05,608 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:07:05,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:07:05,609 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:07:05,609 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:07:05,609 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:07:05,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:07:05,611 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:07:05,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:07:05,611 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:07:05,611 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:07:05,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:07:05,612 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:07:05,612 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:07:05,612 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:07:05,613 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:07:05,613 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:07:05,613 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:07:05,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:07:05,613 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:07:05,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:07:05,614 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:07:05,614 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:07:05,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:07:05,615 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:07:05,615 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:07:05,615 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_0bb96718-14cd-4c82-9bc8-58f0744fbe87/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0bb96718-14cd-4c82-9bc8-58f0744fbe87/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b60d0a2361544de13d982747fad9d912bc87905e [2020-11-28 03:07:05,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:07:05,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:07:05,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:07:05,976 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:07:05,977 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:07:05,978 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0bb96718-14cd-4c82-9bc8-58f0744fbe87/bin/uautomizer/../../sv-benchmarks/c/systemc/pc_sfifo_1.cil-1.c [2020-11-28 03:07:06,062 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0bb96718-14cd-4c82-9bc8-58f0744fbe87/bin/uautomizer/data/6e3a9a41b/6c87d1abef164b8e9ce79dc750530f41/FLAG29a4814da [2020-11-28 03:07:06,528 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:07:06,529 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0bb96718-14cd-4c82-9bc8-58f0744fbe87/sv-benchmarks/c/systemc/pc_sfifo_1.cil-1.c [2020-11-28 03:07:06,551 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0bb96718-14cd-4c82-9bc8-58f0744fbe87/bin/uautomizer/data/6e3a9a41b/6c87d1abef164b8e9ce79dc750530f41/FLAG29a4814da [2020-11-28 03:07:06,889 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0bb96718-14cd-4c82-9bc8-58f0744fbe87/bin/uautomizer/data/6e3a9a41b/6c87d1abef164b8e9ce79dc750530f41 [2020-11-28 03:07:06,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:07:06,893 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:07:06,906 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:07:06,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:07:06,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:07:06,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:07:06" (1/1) ... [2020-11-28 03:07:06,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@697f36ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:06, skipping insertion in model container [2020-11-28 03:07:06,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:07:06" (1/1) ... [2020-11-28 03:07:06,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:07:06,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:07:07,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:07:07,192 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:07:07,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:07:07,244 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:07:07,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:07 WrapperNode [2020-11-28 03:07:07,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:07:07,246 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:07:07,246 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:07:07,246 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:07:07,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:07" (1/1) ... [2020-11-28 03:07:07,264 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:07" (1/1) ... [2020-11-28 03:07:07,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:07:07,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:07:07,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:07:07,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:07:07,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:07" (1/1) ... [2020-11-28 03:07:07,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:07" (1/1) ... [2020-11-28 03:07:07,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:07" (1/1) ... [2020-11-28 03:07:07,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:07" (1/1) ... [2020-11-28 03:07:07,313 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:07" (1/1) ... [2020-11-28 03:07:07,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:07" (1/1) ... [2020-11-28 03:07:07,321 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:07" (1/1) ... [2020-11-28 03:07:07,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:07:07,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:07:07,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:07:07,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:07:07,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0bb96718-14cd-4c82-9bc8-58f0744fbe87/bin/uautomizer/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 [2020-11-28 03:07:07,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:07:07,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:07:07,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:07:07,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:07:08,081 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:07:08,081 INFO L298 CfgBuilder]: Removed 50 assume(true) statements. [2020-11-28 03:07:08,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:07:08 BoogieIcfgContainer [2020-11-28 03:07:08,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:07:08,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:07:08,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:07:08,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:07:08,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:07:06" (1/3) ... [2020-11-28 03:07:08,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d81c347 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:07:08, skipping insertion in model container [2020-11-28 03:07:08,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:07" (2/3) ... [2020-11-28 03:07:08,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d81c347 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:07:08, skipping insertion in model container [2020-11-28 03:07:08,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:07:08" (3/3) ... [2020-11-28 03:07:08,093 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-1.c [2020-11-28 03:07:08,104 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:07:08,109 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-28 03:07:08,122 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-28 03:07:08,166 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:07:08,166 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:07:08,166 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:07:08,166 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:07:08,166 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:07:08,167 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:07:08,167 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:07:08,167 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:07:08,184 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states. [2020-11-28 03:07:08,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:07:08,191 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:07:08,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:07:08,203 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:07:08,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:08,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1783037367, now seen corresponding path program 1 times [2020-11-28 03:07:08,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:08,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533636734] [2020-11-28 03:07:08,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:08,327 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:08,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:08,354 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:08,380 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:07:08,381 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:07:08,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:07:08,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:07:08 BoogieIcfgContainer [2020-11-28 03:07:08,445 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:07:08,446 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:07:08,446 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:07:08,446 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:07:08,447 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:07:08" (3/4) ... [2020-11-28 03:07:08,449 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:07:08,543 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0bb96718-14cd-4c82-9bc8-58f0744fbe87/bin/uautomizer/witness.graphml [2020-11-28 03:07:08,543 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:07:08,545 INFO L168 Benchmark]: Toolchain (without parser) took 1651.19 ms. Allocated memory was 92.3 MB in the beginning and 125.8 MB in the end (delta: 33.6 MB). Free memory was 57.5 MB in the beginning and 90.4 MB in the end (delta: -32.8 MB). Peak memory consumption was 433.4 kB. Max. memory is 16.1 GB. [2020-11-28 03:07:08,546 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory was 63.6 MB in the beginning and 63.6 MB in the end (delta: 27.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:07:08,547 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.31 ms. Allocated memory is still 92.3 MB. Free memory was 57.4 MB in the beginning and 66.7 MB in the end (delta: -9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:08,547 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.86 ms. Allocated memory is still 92.3 MB. Free memory was 66.7 MB in the beginning and 64.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:08,548 INFO L168 Benchmark]: Boogie Preprocessor took 31.82 ms. Allocated memory is still 92.3 MB. Free memory was 64.7 MB in the beginning and 63.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:08,549 INFO L168 Benchmark]: RCFGBuilder took 757.54 ms. Allocated memory is still 92.3 MB. Free memory was 63.0 MB in the beginning and 37.0 MB in the end (delta: 26.0 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:08,550 INFO L168 Benchmark]: TraceAbstraction took 360.04 ms. Allocated memory was 92.3 MB in the beginning and 125.8 MB in the end (delta: 33.6 MB). Free memory was 36.6 MB in the beginning and 94.5 MB in the end (delta: -57.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:07:08,550 INFO L168 Benchmark]: Witness Printer took 97.38 ms. Allocated memory is still 125.8 MB. Free memory was 94.5 MB in the beginning and 90.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:08,554 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory was 63.6 MB in the beginning and 63.6 MB in the end (delta: 27.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 339.31 ms. Allocated memory is still 92.3 MB. Free memory was 57.4 MB in the beginning and 66.7 MB in the end (delta: -9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.86 ms. Allocated memory is still 92.3 MB. Free memory was 66.7 MB in the beginning and 64.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.82 ms. Allocated memory is still 92.3 MB. Free memory was 64.7 MB in the beginning and 63.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 757.54 ms. Allocated memory is still 92.3 MB. Free memory was 63.0 MB in the beginning and 37.0 MB in the end (delta: 26.0 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 360.04 ms. Allocated memory was 92.3 MB in the beginning and 125.8 MB in the end (delta: 33.6 MB). Free memory was 36.6 MB in the beginning and 94.5 MB in the end (delta: -57.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 97.38 ms. Allocated memory is still 125.8 MB. Free memory was 94.5 MB in the beginning and 90.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_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 ; VAL [a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=0, q_read_ev=0, q_write_ev=0] [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 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] [L306] int kernel_st ; [L307] int tmp ; [L311] kernel_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] [L198] COND TRUE (int )p_dw_i == 1 [L199] p_dw_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] [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 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] [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 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] [L213] int __retres1 ; 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] [L216] COND TRUE (int )p_dw_st == 0 [L217] __retres1 = 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] [L229] return (__retres1); 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] [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] [L3] __assert_fail("0", "pc_sfifo_1.cil-1.c", 3, "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, 81 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, 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=81occurred 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, 16 NumberOfCodeBlocks, 16 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...