./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i --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_dbf9926e-836c-4529-b75e-f0eeb7ab27dd/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_dbf9926e-836c-4529-b75e-f0eeb7ab27dd/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_dbf9926e-836c-4529-b75e-f0eeb7ab27dd/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_dbf9926e-836c-4529-b75e-f0eeb7ab27dd/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_dbf9926e-836c-4529-b75e-f0eeb7ab27dd/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_dbf9926e-836c-4529-b75e-f0eeb7ab27dd/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 58087887a1dd564559680784309457f518906cbf .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 [2020-11-30 02:38:07,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:38:07,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:38:07,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:38:07,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:38:07,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:38:07,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:38:07,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:38:07,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:38:07,275 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:38:07,277 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:38:07,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:38:07,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:38:07,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:38:07,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:38:07,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:38:07,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:38:07,294 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:38:07,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:38:07,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:38:07,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:38:07,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:38:07,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:38:07,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:38:07,326 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:38:07,327 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:38:07,327 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:38:07,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:38:07,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:38:07,333 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:38:07,334 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:38:07,335 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:38:07,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:38:07,339 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:38:07,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:38:07,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:38:07,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:38:07,343 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:38:07,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:38:07,344 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:38:07,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:38:07,350 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_dbf9926e-836c-4529-b75e-f0eeb7ab27dd/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:38:07,395 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:38:07,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:38:07,396 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:38:07,397 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:38:07,397 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:38:07,397 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:38:07,397 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:38:07,398 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:38:07,398 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:38:07,398 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:38:07,399 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:38:07,400 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:38:07,400 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:38:07,400 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:38:07,400 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:38:07,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:38:07,401 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:38:07,402 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:38:07,402 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:38:07,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:38:07,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:38:07,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:38:07,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:38:07,403 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:38:07,403 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:38:07,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:38:07,404 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:38:07,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:38:07,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:38:07,406 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:38:07,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:38:07,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:38:07,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:38:07,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:38:07,407 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:38:07,407 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:38:07,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:38:07,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:38:07,408 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:38:07,408 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:38:07,408 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_dbf9926e-836c-4529-b75e-f0eeb7ab27dd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_dbf9926e-836c-4529-b75e-f0eeb7ab27dd/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58087887a1dd564559680784309457f518906cbf [2020-11-30 02:38:07,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:38:07,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:38:07,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:38:07,703 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:38:07,704 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:38:07,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_dbf9926e-836c-4529-b75e-f0eeb7ab27dd/bin/utaipan/../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2020-11-30 02:38:07,794 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dbf9926e-836c-4529-b75e-f0eeb7ab27dd/bin/utaipan/data/699266785/615c2947f5cd47f6af0b76f03c84ec72/FLAG1f0242828 [2020-11-30 02:38:08,399 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:38:08,400 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_dbf9926e-836c-4529-b75e-f0eeb7ab27dd/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2020-11-30 02:38:08,420 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dbf9926e-836c-4529-b75e-f0eeb7ab27dd/bin/utaipan/data/699266785/615c2947f5cd47f6af0b76f03c84ec72/FLAG1f0242828 [2020-11-30 02:38:08,680 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_dbf9926e-836c-4529-b75e-f0eeb7ab27dd/bin/utaipan/data/699266785/615c2947f5cd47f6af0b76f03c84ec72 [2020-11-30 02:38:08,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:38:08,684 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:38:08,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:38:08,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:38:08,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:38:08,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:38:08" (1/1) ... [2020-11-30 02:38:08,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@86b4ab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:38:08, skipping insertion in model container [2020-11-30 02:38:08,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:38:08" (1/1) ... [2020-11-30 02:38:08,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:38:08,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:38:09,116 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-11-30 02:38:09,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:38:09,337 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:38:09,369 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-11-30 02:38:09,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:38:09,480 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:38:09,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:38:09 WrapperNode [2020-11-30 02:38:09,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:38:09,482 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:38:09,482 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:38:09,482 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:38:09,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:38:09" (1/1) ... [2020-11-30 02:38:09,532 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:38:09" (1/1) ... [2020-11-30 02:38:09,568 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:38:09,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:38:09,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:38:09,570 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:38:09,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:38:09" (1/1) ... [2020-11-30 02:38:09,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:38:09" (1/1) ... [2020-11-30 02:38:09,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:38:09" (1/1) ... [2020-11-30 02:38:09,587 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:38:09" (1/1) ... [2020-11-30 02:38:09,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:38:09" (1/1) ... [2020-11-30 02:38:09,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:38:09" (1/1) ... [2020-11-30 02:38:09,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:38:09" (1/1) ... [2020-11-30 02:38:09,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:38:09,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:38:09,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:38:09,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:38:09,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:38:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbf9926e-836c-4529-b75e-f0eeb7ab27dd/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 [2020-11-30 02:38:09,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 02:38:09,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 02:38:09,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-30 02:38:09,699 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2020-11-30 02:38:09,700 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2020-11-30 02:38:09,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:38:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 02:38:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:38:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-30 02:38:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:38:09,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:38:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2020-11-30 02:38:09,703 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2020-11-30 02:38:09,704 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-30 02:38:10,472 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:38:10,472 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-30 02:38:10,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:38:10 BoogieIcfgContainer [2020-11-30 02:38:10,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:38:10,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:38:10,477 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:38:10,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:38:10,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:38:08" (1/3) ... [2020-11-30 02:38:10,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6db2f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:38:10, skipping insertion in model container [2020-11-30 02:38:10,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:38:09" (2/3) ... [2020-11-30 02:38:10,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6db2f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:38:10, skipping insertion in model container [2020-11-30 02:38:10,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:38:10" (3/3) ... [2020-11-30 02:38:10,491 INFO L111 eAbstractionObserver]: Analyzing ICFG read_write_lock-2.i [2020-11-30 02:38:10,521 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-30 02:38:10,521 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:38:10,526 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 02:38:10,527 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-30 02:38:10,564 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,565 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,565 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,566 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,566 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,566 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,567 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,567 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,567 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,568 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,568 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,568 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,568 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,569 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,569 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,569 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,570 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,570 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,570 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,571 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,571 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,572 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,572 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,572 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,573 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,573 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,573 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,574 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,574 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,575 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,575 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,575 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,575 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,576 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,576 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,576 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,577 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,577 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,577 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,577 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,578 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,578 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,578 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,579 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,579 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,579 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,580 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,580 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,580 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,580 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,581 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,581 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,581 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,582 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,582 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,582 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,582 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,583 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,583 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,583 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,584 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,584 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,586 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,586 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,587 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,587 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,587 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,587 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,588 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,588 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,588 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,588 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,589 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,591 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,592 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,592 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,592 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,592 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,592 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,595 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,595 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,596 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,596 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,596 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~lx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,597 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,597 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~ly~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,597 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,597 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,597 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,598 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork2_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,634 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,634 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,634 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,635 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,635 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,635 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 02:38:10,679 INFO L149 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2020-11-30 02:38:10,689 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-30 02:38:10,717 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:38:10,717 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:38:10,717 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:38:10,718 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:38:10,718 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:38:10,718 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:38:10,719 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:38:10,719 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:38:10,732 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-30 02:38:10,734 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 118 transitions, 304 flow [2020-11-30 02:38:10,737 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 118 transitions, 304 flow [2020-11-30 02:38:10,739 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 115 places, 118 transitions, 304 flow [2020-11-30 02:38:10,807 INFO L129 PetriNetUnfolder]: 21/152 cut-off events. [2020-11-30 02:38:10,809 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-11-30 02:38:10,818 INFO L80 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 152 events. 21/152 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 366 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 105. Up to 12 conditions per place. [2020-11-30 02:38:10,827 INFO L116 LiptonReduction]: Number of co-enabled transitions 3778 [2020-11-30 02:38:12,828 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-11-30 02:38:12,968 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-11-30 02:38:14,089 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 92 [2020-11-30 02:38:14,283 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-30 02:38:14,631 INFO L131 LiptonReduction]: Checked pairs total: 29471 [2020-11-30 02:38:14,632 INFO L133 LiptonReduction]: Total number of compositions: 92 [2020-11-30 02:38:14,638 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 60 places, 61 transitions, 190 flow [2020-11-30 02:38:15,326 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6574 states. [2020-11-30 02:38:15,328 INFO L276 IsEmpty]: Start isEmpty. Operand 6574 states. [2020-11-30 02:38:15,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 02:38:15,336 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:38:15,336 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:38:15,337 INFO L429 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-30 02:38:15,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:38:15,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1338902325, now seen corresponding path program 1 times [2020-11-30 02:38:15,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:38:15,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635231026] [2020-11-30 02:38:15,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:38:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:38:15,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:38:15,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635231026] [2020-11-30 02:38:15,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:38:15,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 02:38:15,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368287634] [2020-11-30 02:38:15,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:38:15,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:38:15,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:38:15,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:38:15,703 INFO L87 Difference]: Start difference. First operand 6574 states. Second operand 5 states. [2020-11-30 02:38:16,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:38:16,296 INFO L93 Difference]: Finished difference Result 14569 states and 50345 transitions. [2020-11-30 02:38:16,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 02:38:16,298 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-30 02:38:16,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:38:16,512 INFO L225 Difference]: With dead ends: 14569 [2020-11-30 02:38:16,513 INFO L226 Difference]: Without dead ends: 10609 [2020-11-30 02:38:16,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-30 02:38:16,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10609 states. [2020-11-30 02:38:17,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10609 to 6772. [2020-11-30 02:38:17,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6772 states. [2020-11-30 02:38:17,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6772 states to 6772 states and 23787 transitions. [2020-11-30 02:38:17,163 INFO L78 Accepts]: Start accepts. Automaton has 6772 states and 23787 transitions. Word has length 9 [2020-11-30 02:38:17,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:38:17,164 INFO L481 AbstractCegarLoop]: Abstraction has 6772 states and 23787 transitions. [2020-11-30 02:38:17,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:38:17,164 INFO L276 IsEmpty]: Start isEmpty. Operand 6772 states and 23787 transitions. [2020-11-30 02:38:17,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 02:38:17,168 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:38:17,168 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:38:17,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:38:17,169 INFO L429 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-30 02:38:17,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:38:17,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1805071211, now seen corresponding path program 1 times [2020-11-30 02:38:17,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:38:17,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157590925] [2020-11-30 02:38:17,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:38:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:38:17,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:38:17,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157590925] [2020-11-30 02:38:17,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:38:17,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:38:17,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536304195] [2020-11-30 02:38:17,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:38:17,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:38:17,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:38:17,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:38:17,280 INFO L87 Difference]: Start difference. First operand 6772 states and 23787 transitions. Second operand 4 states. [2020-11-30 02:38:17,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:38:17,463 INFO L93 Difference]: Finished difference Result 9895 states and 30480 transitions. [2020-11-30 02:38:17,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:38:17,464 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-30 02:38:17,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:38:17,551 INFO L225 Difference]: With dead ends: 9895 [2020-11-30 02:38:17,551 INFO L226 Difference]: Without dead ends: 9767 [2020-11-30 02:38:17,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:38:17,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9767 states. [2020-11-30 02:38:18,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 7252. [2020-11-30 02:38:18,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7252 states. [2020-11-30 02:38:18,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7252 states to 7252 states and 23057 transitions. [2020-11-30 02:38:18,065 INFO L78 Accepts]: Start accepts. Automaton has 7252 states and 23057 transitions. Word has length 11 [2020-11-30 02:38:18,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:38:18,065 INFO L481 AbstractCegarLoop]: Abstraction has 7252 states and 23057 transitions. [2020-11-30 02:38:18,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:38:18,066 INFO L276 IsEmpty]: Start isEmpty. Operand 7252 states and 23057 transitions. [2020-11-30 02:38:18,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 02:38:18,068 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:38:18,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:38:18,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:38:18,069 INFO L429 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-30 02:38:18,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:38:18,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1087803173, now seen corresponding path program 2 times [2020-11-30 02:38:18,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:38:18,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716632170] [2020-11-30 02:38:18,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:38:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:38:18,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:38:18,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716632170] [2020-11-30 02:38:18,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:38:18,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:38:18,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010180940] [2020-11-30 02:38:18,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:38:18,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:38:18,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:38:18,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:38:18,283 INFO L87 Difference]: Start difference. First operand 7252 states and 23057 transitions. Second operand 3 states. [2020-11-30 02:38:18,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:38:18,337 INFO L93 Difference]: Finished difference Result 3235 states and 8368 transitions. [2020-11-30 02:38:18,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:38:18,337 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-30 02:38:18,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:38:18,349 INFO L225 Difference]: With dead ends: 3235 [2020-11-30 02:38:18,350 INFO L226 Difference]: Without dead ends: 3171 [2020-11-30 02:38:18,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:38:18,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2020-11-30 02:38:18,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 3171. [2020-11-30 02:38:18,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3171 states. [2020-11-30 02:38:18,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3171 states to 3171 states and 8234 transitions. [2020-11-30 02:38:18,466 INFO L78 Accepts]: Start accepts. Automaton has 3171 states and 8234 transitions. Word has length 11 [2020-11-30 02:38:18,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:38:18,467 INFO L481 AbstractCegarLoop]: Abstraction has 3171 states and 8234 transitions. [2020-11-30 02:38:18,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:38:18,467 INFO L276 IsEmpty]: Start isEmpty. Operand 3171 states and 8234 transitions. [2020-11-30 02:38:18,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 02:38:18,468 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:38:18,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:38:18,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 02:38:18,469 INFO L429 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-30 02:38:18,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:38:18,470 INFO L82 PathProgramCache]: Analyzing trace with hash -850585031, now seen corresponding path program 1 times [2020-11-30 02:38:18,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:38:18,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23721278] [2020-11-30 02:38:18,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:38:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:38:18,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:38:18,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23721278] [2020-11-30 02:38:18,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:38:18,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 02:38:18,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083650275] [2020-11-30 02:38:18,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:38:18,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:38:18,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:38:18,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:38:18,535 INFO L87 Difference]: Start difference. First operand 3171 states and 8234 transitions. Second operand 5 states. [2020-11-30 02:38:18,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:38:18,814 INFO L93 Difference]: Finished difference Result 4389 states and 11053 transitions. [2020-11-30 02:38:18,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 02:38:18,815 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-30 02:38:18,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:38:18,824 INFO L225 Difference]: With dead ends: 4389 [2020-11-30 02:38:18,824 INFO L226 Difference]: Without dead ends: 3713 [2020-11-30 02:38:18,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-30 02:38:18,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3713 states. [2020-11-30 02:38:18,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3713 to 2879. [2020-11-30 02:38:18,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2879 states. [2020-11-30 02:38:18,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2879 states to 2879 states and 7415 transitions. [2020-11-30 02:38:18,957 INFO L78 Accepts]: Start accepts. Automaton has 2879 states and 7415 transitions. Word has length 13 [2020-11-30 02:38:18,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:38:18,958 INFO L481 AbstractCegarLoop]: Abstraction has 2879 states and 7415 transitions. [2020-11-30 02:38:18,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:38:18,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2879 states and 7415 transitions. [2020-11-30 02:38:18,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 02:38:18,959 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:38:18,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:38:18,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 02:38:18,960 INFO L429 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-30 02:38:18,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:38:18,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1940976462, now seen corresponding path program 1 times [2020-11-30 02:38:18,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:38:18,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274254677] [2020-11-30 02:38:18,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:38:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:38:19,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:38:19,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274254677] [2020-11-30 02:38:19,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:38:19,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 02:38:19,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966424134] [2020-11-30 02:38:19,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:38:19,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:38:19,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:38:19,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:38:19,059 INFO L87 Difference]: Start difference. First operand 2879 states and 7415 transitions. Second operand 5 states. [2020-11-30 02:38:19,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:38:19,223 INFO L93 Difference]: Finished difference Result 3539 states and 8886 transitions. [2020-11-30 02:38:19,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 02:38:19,223 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-30 02:38:19,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:38:19,232 INFO L225 Difference]: With dead ends: 3539 [2020-11-30 02:38:19,232 INFO L226 Difference]: Without dead ends: 3370 [2020-11-30 02:38:19,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 02:38:19,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3370 states. [2020-11-30 02:38:19,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3370 to 2535. [2020-11-30 02:38:19,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2535 states. [2020-11-30 02:38:19,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2535 states to 2535 states and 6495 transitions. [2020-11-30 02:38:19,310 INFO L78 Accepts]: Start accepts. Automaton has 2535 states and 6495 transitions. Word has length 16 [2020-11-30 02:38:19,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:38:19,310 INFO L481 AbstractCegarLoop]: Abstraction has 2535 states and 6495 transitions. [2020-11-30 02:38:19,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:38:19,311 INFO L276 IsEmpty]: Start isEmpty. Operand 2535 states and 6495 transitions. [2020-11-30 02:38:19,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 02:38:19,312 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:38:19,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:38:19,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 02:38:19,314 INFO L429 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-30 02:38:19,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:38:19,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1057754047, now seen corresponding path program 1 times [2020-11-30 02:38:19,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:38:19,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740771266] [2020-11-30 02:38:19,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:38:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:38:19,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:38:19,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740771266] [2020-11-30 02:38:19,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:38:19,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 02:38:19,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880287523] [2020-11-30 02:38:19,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:38:19,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:38:19,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:38:19,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:38:19,383 INFO L87 Difference]: Start difference. First operand 2535 states and 6495 transitions. Second operand 5 states. [2020-11-30 02:38:19,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:38:19,553 INFO L93 Difference]: Finished difference Result 3089 states and 7765 transitions. [2020-11-30 02:38:19,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 02:38:19,554 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-30 02:38:19,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:38:19,564 INFO L225 Difference]: With dead ends: 3089 [2020-11-30 02:38:19,564 INFO L226 Difference]: Without dead ends: 2789 [2020-11-30 02:38:19,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 02:38:19,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2020-11-30 02:38:19,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 2048. [2020-11-30 02:38:19,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2048 states. [2020-11-30 02:38:19,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2048 states to 2048 states and 5239 transitions. [2020-11-30 02:38:19,629 INFO L78 Accepts]: Start accepts. Automaton has 2048 states and 5239 transitions. Word has length 16 [2020-11-30 02:38:19,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:38:19,631 INFO L481 AbstractCegarLoop]: Abstraction has 2048 states and 5239 transitions. [2020-11-30 02:38:19,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:38:19,633 INFO L276 IsEmpty]: Start isEmpty. Operand 2048 states and 5239 transitions. [2020-11-30 02:38:19,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 02:38:19,636 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:38:19,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:38:19,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 02:38:19,637 INFO L429 AbstractCegarLoop]: === Iteration 7 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-30 02:38:19,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:38:19,638 INFO L82 PathProgramCache]: Analyzing trace with hash 613997448, now seen corresponding path program 1 times [2020-11-30 02:38:19,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:38:19,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714871658] [2020-11-30 02:38:19,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:38:19,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:38:19,677 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:38:19,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:38:19,696 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:38:19,736 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 02:38:19,736 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 02:38:19,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 02:38:19,759 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-11-30 02:38:19,760 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-11-30 02:38:19,764 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-11-30 02:38:19,764 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-11-30 02:38:19,765 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-11-30 02:38:19,765 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-11-30 02:38:19,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:38:19 BasicIcfg [2020-11-30 02:38:19,828 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:38:19,829 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:38:19,829 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:38:19,829 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:38:19,830 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:38:10" (3/4) ... [2020-11-30 02:38:19,832 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 02:38:19,842 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-11-30 02:38:19,842 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-11-30 02:38:19,843 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-11-30 02:38:19,843 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-11-30 02:38:19,843 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-11-30 02:38:19,843 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-11-30 02:38:19,925 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_dbf9926e-836c-4529-b75e-f0eeb7ab27dd/bin/utaipan/witness.graphml [2020-11-30 02:38:19,927 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:38:19,929 INFO L168 Benchmark]: Toolchain (without parser) took 11244.61 ms. Allocated memory was 96.5 MB in the beginning and 457.2 MB in the end (delta: 360.7 MB). Free memory was 63.7 MB in the beginning and 270.0 MB in the end (delta: -206.3 MB). Peak memory consumption was 154.9 MB. Max. memory is 16.1 GB. [2020-11-30 02:38:19,934 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 96.5 MB. Free memory was 55.8 MB in the beginning and 55.7 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:38:19,935 INFO L168 Benchmark]: CACSL2BoogieTranslator took 790.96 ms. Allocated memory is still 96.5 MB. Free memory was 63.4 MB in the beginning and 52.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:38:19,935 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.30 ms. Allocated memory is still 96.5 MB. Free memory was 52.5 MB in the beginning and 50.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:38:19,935 INFO L168 Benchmark]: Boogie Preprocessor took 43.07 ms. Allocated memory is still 96.5 MB. Free memory was 50.4 MB in the beginning and 48.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:38:19,936 INFO L168 Benchmark]: RCFGBuilder took 861.67 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 48.7 MB in the beginning and 81.2 MB in the end (delta: -32.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-30 02:38:19,936 INFO L168 Benchmark]: TraceAbstraction took 9351.75 ms. Allocated memory was 121.6 MB in the beginning and 457.2 MB in the end (delta: 335.5 MB). Free memory was 81.2 MB in the beginning and 278.3 MB in the end (delta: -197.1 MB). Peak memory consumption was 138.3 MB. Max. memory is 16.1 GB. [2020-11-30 02:38:19,937 INFO L168 Benchmark]: Witness Printer took 98.52 ms. Allocated memory is still 457.2 MB. Free memory was 278.3 MB in the beginning and 270.0 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:38:19,939 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 96.5 MB. Free memory was 55.8 MB in the beginning and 55.7 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 790.96 ms. Allocated memory is still 96.5 MB. Free memory was 63.4 MB in the beginning and 52.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 86.30 ms. Allocated memory is still 96.5 MB. Free memory was 52.5 MB in the beginning and 50.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.07 ms. Allocated memory is still 96.5 MB. Free memory was 50.4 MB in the beginning and 48.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 861.67 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 48.7 MB in the beginning and 81.2 MB in the end (delta: -32.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9351.75 ms. Allocated memory was 121.6 MB in the beginning and 457.2 MB in the end (delta: 335.5 MB). Free memory was 81.2 MB in the beginning and 278.3 MB in the end (delta: -197.1 MB). Peak memory consumption was 138.3 MB. Max. memory is 16.1 GB. * Witness Printer took 98.52 ms. Allocated memory is still 457.2 MB. Free memory was 278.3 MB in the beginning and 270.0 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 3338 VarBasedMoverChecksPositive, 185 VarBasedMoverChecksNegative, 118 SemBasedMoverChecksPositive, 67 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.8s, 924 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.8s, 115 PlacesBefore, 60 PlacesAfterwards, 118 TransitionsBefore, 61 TransitionsAfterwards, 3778 CoEnabledTransitionPairs, 9 FixpointIterations, 27 TrivialSequentialCompositions, 51 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 2 ChoiceCompositions, 92 TotalNumberOfCompositions, 29471 MoverChecksTotal - CounterExampleResult [Line: 16]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L704] 0 int w=0, r=0, x, y; [L748] 0 pthread_t t1, t2, t3, t4; [L749] FCALL, FORK 0 pthread_create(&t1, 0, writer, 0) VAL [r=0, w=0, x=0, y=0] [L750] FCALL, FORK 0 pthread_create(&t2, 0, reader, 0) VAL [r=0, w=0, x=0, y=0] [L724] 2 int l; [L725] CALL 2 __VERIFIER_atomic_take_read_lock() [L710] CALL 2 assume_abort_if_not(w==0) [L3] COND TRUE 2 !cond [L710] RET 2 assume_abort_if_not(w==0) [L711] 2 r = r+1 [L725] RET 2 __VERIFIER_atomic_take_read_lock() [L727] 2 l = x VAL [r=1, w=0, x=0, y=0] [L730] 2 y = l VAL [r=1, w=0, x=0, y=0] [L733] 2 int ly = y; VAL [r=1, w=0, x=0, y=0] [L736] 2 int lx = x; VAL [r=1, w=0, x=0, y=0] [L738] COND FALSE 2 !(!(ly == lx)) [L740] 2 l = r-1 VAL [r=1, w=0, x=0, y=0] [L751] FCALL, FORK 0 pthread_create(&t3, 0, writer, 0) VAL [r=1, w=0, x=0, y=0] [L752] FCALL, FORK 0 pthread_create(&t4, 0, reader, 0) VAL [r=1, w=0, x=0, y=0] [L724] 4 int l; [L725] CALL 4 __VERIFIER_atomic_take_read_lock() [L710] CALL 4 assume_abort_if_not(w==0) [L3] COND TRUE 4 !cond [L710] RET 4 assume_abort_if_not(w==0) [L711] 4 r = r+1 [L725] RET 4 __VERIFIER_atomic_take_read_lock() [L727] 4 l = x VAL [r=2, w=0, x=0, y=0] [L730] 4 y = l VAL [r=2, w=0, x=0, y=0] [L743] 2 r = l [L745] 2 return 0; [L714] CALL 3 __VERIFIER_atomic_take_write_lock() [L706] CALL 3 assume_abort_if_not(w==0 && r==0) [L3] COND TRUE 3 !cond [L706] RET 3 assume_abort_if_not(w==0 && r==0) [L707] 3 w = 1 [L714] RET 3 __VERIFIER_atomic_take_write_lock() [L716] 3 x = 3 VAL [r=0, w=1, x=3, y=0] [L733] 4 int ly = y; VAL [r=0, w=1, x=3, y=0] [L736] 4 int lx = x; [L738] COND TRUE 4 !(ly == lx) [L16] COND FALSE 4 !(0) [L16] 4 __assert_fail ("0", "read_write_lock-2.c", 7, __extension__ __PRETTY_FUNCTION__) VAL [r=0, w=1, x=3, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 78 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.0s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.6s, HoareTripleCheckerStatistics: 674 SDtfs, 728 SDslu, 1047 SDs, 0 SdLazy, 377 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7252occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 6 MinimizatonAttempts, 8762 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 1548 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...