./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-1_2-join.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a164878-d333-4368-bcd0-142412300d02/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a164878-d333-4368-bcd0-142412300d02/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a164878-d333-4368-bcd0-142412300d02/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a164878-d333-4368-bcd0-142412300d02/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-races/race-1_2-join.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a164878-d333-4368-bcd0-142412300d02/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a164878-d333-4368-bcd0-142412300d02/bin/utaipan-WLngWcDbfI --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 b74577f7b762bc71b4ec24b3f1b1d4417fb82a2d ..................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:24:00,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:24:00,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:24:00,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:24:00,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:24:00,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:24:00,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:24:00,284 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:24:00,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:24:00,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:24:00,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:24:00,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:24:00,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:24:00,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:24:00,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:24:00,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:24:00,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:24:00,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:24:00,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:24:00,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:24:00,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:24:00,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:24:00,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:24:00,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:24:00,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:24:00,345 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:24:00,346 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:24:00,348 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:24:00,349 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:24:00,351 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:24:00,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:24:00,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:24:00,356 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:24:00,357 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:24:00,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:24:00,360 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:24:00,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:24:00,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:24:00,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:24:00,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:24:00,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:24:00,365 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a164878-d333-4368-bcd0-142412300d02/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:24:00,419 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:24:00,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:24:00,422 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:24:00,422 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:24:00,423 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:24:00,423 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:24:00,423 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:24:00,423 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:24:00,424 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:24:00,424 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:24:00,425 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:24:00,426 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:24:00,426 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:24:00,427 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:24:00,427 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:24:00,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:24:00,428 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:24:00,429 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:24:00,429 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:24:00,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:24:00,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:24:00,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:24:00,430 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:24:00,430 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:24:00,431 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:24:00,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:24:00,431 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:24:00,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:24:00,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:24:00,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:24:00,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:24:00,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:24:00,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:24:00,436 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:24:00,436 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:24:00,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:24:00,437 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:24:00,437 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:24:00,437 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:24:00,438 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a164878-d333-4368-bcd0-142412300d02/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a164878-d333-4368-bcd0-142412300d02/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b74577f7b762bc71b4ec24b3f1b1d4417fb82a2d [2021-10-11 02:24:00,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:24:00,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:24:00,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:24:00,849 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:24:00,850 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:24:00,851 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a164878-d333-4368-bcd0-142412300d02/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/ldv-races/race-1_2-join.i [2021-10-11 02:24:00,939 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a164878-d333-4368-bcd0-142412300d02/bin/utaipan-WLngWcDbfI/data/74d86c2fd/24b1561fdf7842299954521d10751854/FLAGa7615e78a [2021-10-11 02:24:01,573 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:24:01,574 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a164878-d333-4368-bcd0-142412300d02/sv-benchmarks/c/ldv-races/race-1_2-join.i [2021-10-11 02:24:01,601 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a164878-d333-4368-bcd0-142412300d02/bin/utaipan-WLngWcDbfI/data/74d86c2fd/24b1561fdf7842299954521d10751854/FLAGa7615e78a [2021-10-11 02:24:01,782 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a164878-d333-4368-bcd0-142412300d02/bin/utaipan-WLngWcDbfI/data/74d86c2fd/24b1561fdf7842299954521d10751854 [2021-10-11 02:24:01,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:24:01,785 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:24:01,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:01,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:24:01,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:24:01,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:01" (1/1) ... [2021-10-11 02:24:01,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a52de22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:01, skipping insertion in model container [2021-10-11 02:24:01,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:01" (1/1) ... [2021-10-11 02:24:01,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:24:01,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:24:02,655 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a164878-d333-4368-bcd0-142412300d02/sv-benchmarks/c/ldv-races/race-1_2-join.i[76153,76166] [2021-10-11 02:24:02,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:02,681 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:24:02,741 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a164878-d333-4368-bcd0-142412300d02/sv-benchmarks/c/ldv-races/race-1_2-join.i[76153,76166] [2021-10-11 02:24:02,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:03,244 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:24:03,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:03 WrapperNode [2021-10-11 02:24:03,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:03,247 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:03,247 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:24:03,247 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:24:03,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:03" (1/1) ... [2021-10-11 02:24:03,323 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:03" (1/1) ... [2021-10-11 02:24:03,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:03,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:24:03,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:24:03,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:24:03,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:03" (1/1) ... [2021-10-11 02:24:03,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:03" (1/1) ... [2021-10-11 02:24:03,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:03" (1/1) ... [2021-10-11 02:24:03,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:03" (1/1) ... [2021-10-11 02:24:03,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:03" (1/1) ... [2021-10-11 02:24:03,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:03" (1/1) ... [2021-10-11 02:24:03,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:03" (1/1) ... [2021-10-11 02:24:03,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:24:03,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:24:03,453 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:24:03,453 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:24:03,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:03" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a164878-d333-4368-bcd0-142412300d02/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:24:03,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-11 02:24:03,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:24:03,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-11 02:24:03,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:24:03,549 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-10-11 02:24:03,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-11 02:24:03,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:24:03,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:24:03,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:24:03,549 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-11 02:24:03,549 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-11 02:24:03,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:24:03,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:24:03,551 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-11 02:24:04,313 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:24:04,313 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-11 02:24:04,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:04 BoogieIcfgContainer [2021-10-11 02:24:04,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:24:04,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:24:04,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:24:04,326 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:24:04,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:24:01" (1/3) ... [2021-10-11 02:24:04,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f2071d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:04, skipping insertion in model container [2021-10-11 02:24:04,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:03" (2/3) ... [2021-10-11 02:24:04,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f2071d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:04, skipping insertion in model container [2021-10-11 02:24:04,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:04" (3/3) ... [2021-10-11 02:24:04,330 INFO L111 eAbstractionObserver]: Analyzing ICFG race-1_2-join.i [2021-10-11 02:24:04,345 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-11 02:24:04,346 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:24:04,350 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-10-11 02:24:04,351 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-11 02:24:04,387 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:04,388 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:04,388 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:04,388 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:04,388 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:04,388 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:04,389 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:04,390 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:04,390 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:04,390 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:04,391 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:04,391 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:04,392 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:04,392 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:04,392 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:04,392 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:04,395 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:04,396 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:04,397 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:04,397 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:04,397 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:24:04,409 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-10-11 02:24:04,425 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-11 02:24:04,465 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:24:04,466 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:24:04,466 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:24:04,466 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:24:04,467 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:24:04,467 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:24:04,467 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:24:04,468 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:24:04,487 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-11 02:24:04,489 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 87 transitions, 182 flow [2021-10-11 02:24:04,491 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 87 transitions, 182 flow [2021-10-11 02:24:04,493 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 87 transitions, 182 flow [2021-10-11 02:24:04,554 INFO L129 PetriNetUnfolder]: 4/98 cut-off events. [2021-10-11 02:24:04,554 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-11 02:24:04,562 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 98 events. 4/98 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 146 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 58. Up to 3 conditions per place. [2021-10-11 02:24:04,565 INFO L116 LiptonReduction]: Number of co-enabled transitions 238 [2021-10-11 02:24:07,557 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-10-11 02:24:08,427 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2021-10-11 02:24:08,683 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2021-10-11 02:24:08,809 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-10-11 02:24:09,437 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-10-11 02:24:09,552 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-10-11 02:24:09,689 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-10-11 02:24:09,859 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-10-11 02:24:10,069 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-10-11 02:24:10,279 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-10-11 02:24:10,822 WARN L197 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 127 [2021-10-11 02:24:11,072 WARN L197 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2021-10-11 02:24:11,436 WARN L197 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 110 [2021-10-11 02:24:11,583 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-10-11 02:24:11,987 WARN L197 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 118 [2021-10-11 02:24:12,189 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-10-11 02:24:12,191 INFO L131 LiptonReduction]: Checked pairs total: 302 [2021-10-11 02:24:12,192 INFO L133 LiptonReduction]: Total number of compositions: 102 [2021-10-11 02:24:12,198 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 15 transitions, 38 flow [2021-10-11 02:24:12,206 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 21 states. [2021-10-11 02:24:12,208 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2021-10-11 02:24:12,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-11 02:24:12,214 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:12,216 INFO L422 BasicCegarLoop]: trace histogram [1] [2021-10-11 02:24:12,217 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:12,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:12,222 INFO L82 PathProgramCache]: Analyzing trace with hash 357, now seen corresponding path program 1 times [2021-10-11 02:24:12,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:12,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312703555] [2021-10-11 02:24:12,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:12,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:12,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312703555] [2021-10-11 02:24:12,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:12,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2021-10-11 02:24:12,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966887990] [2021-10-11 02:24:12,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:24:12,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:12,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:24:12,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:24:12,560 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2021-10-11 02:24:12,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:12,576 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2021-10-11 02:24:12,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:24:12,578 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 1 [2021-10-11 02:24:12,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:12,589 INFO L225 Difference]: With dead ends: 18 [2021-10-11 02:24:12,589 INFO L226 Difference]: Without dead ends: 8 [2021-10-11 02:24:12,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:24:12,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-11 02:24:12,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-11 02:24:12,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-11 02:24:12,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2021-10-11 02:24:12,631 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 1 [2021-10-11 02:24:12,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:12,631 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-10-11 02:24:12,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:24:12,632 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2021-10-11 02:24:12,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:24:12,633 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:12,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:24:12,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:24:12,634 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:12,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:12,635 INFO L82 PathProgramCache]: Analyzing trace with hash 11013080, now seen corresponding path program 1 times [2021-10-11 02:24:12,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:12,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441208377] [2021-10-11 02:24:12,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:12,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:12,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:12,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441208377] [2021-10-11 02:24:12,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:12,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:24:12,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308513391] [2021-10-11 02:24:12,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:12,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:12,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:12,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:12,916 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 3 states. [2021-10-11 02:24:12,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:12,934 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2021-10-11 02:24:12,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:12,935 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-10-11 02:24:12,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:12,935 INFO L225 Difference]: With dead ends: 8 [2021-10-11 02:24:12,936 INFO L226 Difference]: Without dead ends: 6 [2021-10-11 02:24:12,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:12,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2021-10-11 02:24:12,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2021-10-11 02:24:12,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-11 02:24:12,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5 transitions. [2021-10-11 02:24:12,940 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 5 transitions. Word has length 4 [2021-10-11 02:24:12,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:12,940 INFO L481 AbstractCegarLoop]: Abstraction has 6 states and 5 transitions. [2021-10-11 02:24:12,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:12,941 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2021-10-11 02:24:12,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:24:12,941 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:12,941 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:24:12,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:24:12,943 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:12,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:12,944 INFO L82 PathProgramCache]: Analyzing trace with hash 341411049, now seen corresponding path program 1 times [2021-10-11 02:24:12,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:12,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446414092] [2021-10-11 02:24:12,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:24:13,015 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:24:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:24:13,072 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:24:13,099 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:24:13,099 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:24:13,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:24:13,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:24:13 BasicIcfg [2021-10-11 02:24:13,123 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:24:13,123 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:24:13,123 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:24:13,124 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:24:13,124 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:04" (3/4) ... [2021-10-11 02:24:13,126 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:24:13,184 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a164878-d333-4368-bcd0-142412300d02/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:24:13,184 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:24:13,185 INFO L168 Benchmark]: Toolchain (without parser) took 11399.31 ms. Allocated memory was 100.7 MB in the beginning and 251.7 MB in the end (delta: 151.0 MB). Free memory was 62.6 MB in the beginning and 183.9 MB in the end (delta: -121.3 MB). Peak memory consumption was 29.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:13,189 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 100.7 MB. Free memory was 71.0 MB in the beginning and 71.0 MB in the end (delta: 27.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:13,189 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1458.04 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 62.3 MB in the beginning and 68.2 MB in the end (delta: -5.9 MB). Peak memory consumption was 52.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:13,190 INFO L168 Benchmark]: Boogie Procedure Inliner took 108.35 ms. Allocated memory is still 123.7 MB. Free memory was 68.2 MB in the beginning and 65.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:13,190 INFO L168 Benchmark]: Boogie Preprocessor took 95.36 ms. Allocated memory is still 123.7 MB. Free memory was 65.4 MB in the beginning and 63.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:13,191 INFO L168 Benchmark]: RCFGBuilder took 863.80 ms. Allocated memory is still 123.7 MB. Free memory was 63.3 MB in the beginning and 70.8 MB in the end (delta: -7.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:13,191 INFO L168 Benchmark]: TraceAbstraction took 8804.61 ms. Allocated memory was 123.7 MB in the beginning and 251.7 MB in the end (delta: 127.9 MB). Free memory was 70.8 MB in the beginning and 186.0 MB in the end (delta: -115.2 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:13,192 INFO L168 Benchmark]: Witness Printer took 60.85 ms. Allocated memory is still 251.7 MB. Free memory was 186.0 MB in the beginning and 183.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:13,194 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 100.7 MB. Free memory was 71.0 MB in the beginning and 71.0 MB in the end (delta: 27.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1458.04 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 62.3 MB in the beginning and 68.2 MB in the end (delta: -5.9 MB). Peak memory consumption was 52.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 108.35 ms. Allocated memory is still 123.7 MB. Free memory was 68.2 MB in the beginning and 65.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 95.36 ms. Allocated memory is still 123.7 MB. Free memory was 65.4 MB in the beginning and 63.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 863.80 ms. Allocated memory is still 123.7 MB. Free memory was 63.3 MB in the beginning and 70.8 MB in the end (delta: -7.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8804.61 ms. Allocated memory was 123.7 MB in the beginning and 251.7 MB in the end (delta: 127.9 MB). Free memory was 70.8 MB in the beginning and 186.0 MB in the end (delta: -115.2 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. * Witness Printer took 60.85 ms. Allocated memory is still 251.7 MB. Free memory was 186.0 MB in the beginning and 183.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 167 VarBasedMoverChecksPositive, 13 VarBasedMoverChecksNegative, 1 SemBasedMoverChecksPositive, 12 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 4 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 7.7s, 86 PlacesBefore, 17 PlacesAfterwards, 87 TransitionsBefore, 15 TransitionsAfterwards, 238 CoEnabledTransitionPairs, 7 FixpointIterations, 70 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 6 ConcurrentYvCompositions, 3 ChoiceCompositions, 102 TotalNumberOfCompositions, 302 MoverChecksTotal - CounterExampleResult [Line: 1695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1696] 0 pthread_t t1; [L1697] 0 pthread_mutex_t mutex; [L1698] 0 int pdev; [L1709] 0 pdev = 1 [L1695] COND FALSE 0 !(!expression) [L1711] COND TRUE 0 __VERIFIER_nondet_int() [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={5:0}, pdev=1, t1={6:0}] [L1714] 0 pdev = 2 VAL [arg={0:0}, mutex={5:0}, pdev=2, t1={6:0}] [L1702] 1 pdev = 6 [L1705] 1 return 0; [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [\result={0:0}, arg={0:0}, arg={0:0}, mutex={5:0}, pdev=6, t1={6:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 83 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.7s, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 1 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...