./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-divine/condvar_spurious_wakeup.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_619b60a4-5528-4a03-a59f-17557135bc2c/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_619b60a4-5528-4a03-a59f-17557135bc2c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_619b60a4-5528-4a03-a59f-17557135bc2c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_619b60a4-5528-4a03-a59f-17557135bc2c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-divine/condvar_spurious_wakeup.i -s /tmp/vcloud-vcloud-master/worker/run_dir_619b60a4-5528-4a03-a59f-17557135bc2c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_619b60a4-5528-4a03-a59f-17557135bc2c/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5363944058b659dbd3bc63f3b9b4bc7dafd036bb ...................................................................................................................................................................................................................................................................................... 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 0.1.24-6b5699a [2019-11-26 02:40:35,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:40:35,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:40:35,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:40:35,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:40:35,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:40:36,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:40:36,008 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:40:36,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:40:36,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:40:36,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:40:36,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:40:36,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:40:36,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:40:36,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:40:36,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:40:36,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:40:36,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:40:36,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:40:36,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:40:36,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:40:36,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:40:36,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:40:36,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:40:36,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:40:36,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:40:36,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:40:36,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:40:36,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:40:36,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:40:36,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:40:36,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:40:36,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:40:36,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:40:36,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:40:36,048 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:40:36,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:40:36,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:40:36,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:40:36,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:40:36,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:40:36,052 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_619b60a4-5528-4a03-a59f-17557135bc2c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:40:36,075 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:40:36,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:40:36,086 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:40:36,087 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:40:36,087 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:40:36,087 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:40:36,087 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:40:36,087 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:40:36,088 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:40:36,088 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:40:36,088 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:40:36,088 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:40:36,089 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:40:36,089 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:40:36,089 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:40:36,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:40:36,091 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:40:36,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:40:36,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:40:36,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:40:36,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:40:36,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:40:36,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:40:36,092 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:40:36,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:40:36,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:40:36,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:40:36,093 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:40:36,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:40:36,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:40:36,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:40:36,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:40:36,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:40:36,095 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:40:36,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:40:36,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:40:36,096 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:40:36,096 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_619b60a4-5528-4a03-a59f-17557135bc2c/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(__VERIFIER_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 -> 5363944058b659dbd3bc63f3b9b4bc7dafd036bb [2019-11-26 02:40:36,281 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:40:36,292 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:40:36,294 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:40:36,295 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:40:36,303 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:40:36,303 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_619b60a4-5528-4a03-a59f-17557135bc2c/bin/utaipan/../../sv-benchmarks/c/pthread-divine/condvar_spurious_wakeup.i [2019-11-26 02:40:36,371 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_619b60a4-5528-4a03-a59f-17557135bc2c/bin/utaipan/data/52b0beaff/db1f3308513c4c62b681c5fe7c8d8cad/FLAG63ac4abec [2019-11-26 02:40:36,795 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:40:36,799 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_619b60a4-5528-4a03-a59f-17557135bc2c/sv-benchmarks/c/pthread-divine/condvar_spurious_wakeup.i [2019-11-26 02:40:36,810 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_619b60a4-5528-4a03-a59f-17557135bc2c/bin/utaipan/data/52b0beaff/db1f3308513c4c62b681c5fe7c8d8cad/FLAG63ac4abec [2019-11-26 02:40:37,161 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_619b60a4-5528-4a03-a59f-17557135bc2c/bin/utaipan/data/52b0beaff/db1f3308513c4c62b681c5fe7c8d8cad [2019-11-26 02:40:37,163 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:40:37,164 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:40:37,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:40:37,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:40:37,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:40:37,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:40:37" (1/1) ... [2019-11-26 02:40:37,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1423428b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:37, skipping insertion in model container [2019-11-26 02:40:37,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:40:37" (1/1) ... [2019-11-26 02:40:37,182 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:40:37,234 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:40:37,447 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2019-11-26 02:40:37,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:40:37,651 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:40:37,680 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2019-11-26 02:40:37,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:40:37,792 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:40:37,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:37 WrapperNode [2019-11-26 02:40:37,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:40:37,793 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:40:37,793 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:40:37,793 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:40:37,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:37" (1/1) ... [2019-11-26 02:40:37,821 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:37" (1/1) ... [2019-11-26 02:40:37,837 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:40:37,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:40:37,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:40:37,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:40:37,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:37" (1/1) ... [2019-11-26 02:40:37,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:37" (1/1) ... [2019-11-26 02:40:37,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:37" (1/1) ... [2019-11-26 02:40:37,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:37" (1/1) ... [2019-11-26 02:40:37,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:37" (1/1) ... [2019-11-26 02:40:37,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:37" (1/1) ... [2019-11-26 02:40:37,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:37" (1/1) ... [2019-11-26 02:40:37,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:40:37,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:40:37,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:40:37,869 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:40:37,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_619b60a4-5528-4a03-a59f-17557135bc2c/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 [2019-11-26 02:40:37,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:40:37,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:40:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2019-11-26 02:40:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:40:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:40:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-26 02:40:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2019-11-26 02:40:37,926 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2019-11-26 02:40:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:40:37,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:40:37,928 WARN L202 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-26 02:40:38,242 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:40:38,243 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-26 02:40:38,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:40:38 BoogieIcfgContainer [2019-11-26 02:40:38,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:40:38,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:40:38,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:40:38,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:40:38,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:40:37" (1/3) ... [2019-11-26 02:40:38,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c788afb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:40:38, skipping insertion in model container [2019-11-26 02:40:38,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:37" (2/3) ... [2019-11-26 02:40:38,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c788afb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:40:38, skipping insertion in model container [2019-11-26 02:40:38,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:40:38" (3/3) ... [2019-11-26 02:40:38,250 INFO L109 eAbstractionObserver]: Analyzing ICFG condvar_spurious_wakeup.i [2019-11-26 02:40:38,280 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:40:38,280 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:40:38,280 WARN L315 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:40:38,281 WARN L315 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:40:38,281 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:40:38,281 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:40:38,282 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:40:38,282 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:40:38,282 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:40:38,283 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:40:38,283 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:40:38,283 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:40:38,284 WARN L315 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:40:38,284 WARN L315 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:40:38,284 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:40:38,284 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:40:38,285 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:40:38,285 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:40:38,285 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:40:38,286 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:40:38,286 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:40:38,286 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:40:38,287 WARN L315 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:40:38,287 WARN L315 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:40:38,287 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:40:38,287 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:40:38,288 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:40:38,288 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:40:38,289 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:40:38,289 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:40:38,302 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-26 02:40:38,302 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:40:38,309 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-26 02:40:38,319 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-26 02:40:38,337 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:40:38,337 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:40:38,337 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:40:38,337 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:40:38,337 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:40:38,338 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:40:38,338 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:40:38,338 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:40:38,348 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 84 transitions [2019-11-26 02:40:38,370 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 148 states. [2019-11-26 02:40:38,372 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2019-11-26 02:40:38,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-26 02:40:38,381 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:40:38,382 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:40:38,382 INFO L410 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:40:38,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:40:38,387 INFO L82 PathProgramCache]: Analyzing trace with hash -170382165, now seen corresponding path program 1 times [2019-11-26 02:40:38,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:40:38,396 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569817945] [2019-11-26 02:40:38,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:40:38,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:40:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:40:38,576 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:40:38,577 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:40:38,607 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-26 02:40:38,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:40:38 BasicIcfg [2019-11-26 02:40:38,609 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:40:38,610 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:40:38,610 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:40:38,610 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:40:38,611 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:40:38" (3/4) ... [2019-11-26 02:40:38,612 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 02:40:38,681 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_619b60a4-5528-4a03-a59f-17557135bc2c/bin/utaipan/witness.graphml [2019-11-26 02:40:38,681 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:40:38,683 INFO L168 Benchmark]: Toolchain (without parser) took 1517.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -113.0 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:40:38,683 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:40:38,684 INFO L168 Benchmark]: CACSL2BoogieTranslator took 627.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -167.6 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:40:38,684 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:40:38,685 INFO L168 Benchmark]: Boogie Preprocessor took 30.78 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:40:38,685 INFO L168 Benchmark]: RCFGBuilder took 375.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:40:38,686 INFO L168 Benchmark]: TraceAbstraction took 365.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:40:38,686 INFO L168 Benchmark]: Witness Printer took 71.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:40:38,689 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 627.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -167.6 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.78 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 375.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 365.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Witness Printer took 71.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 693]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L688] 0 int x; VAL [x=0] [L686] 0 pthread_mutex_t lock; VAL [lock={3:0}, x=0] [L687] 0 pthread_cond_t cond; VAL [cond={5:0}, lock={3:0}, x=0] [L698] 0 pthread_t t; VAL [cond={5:0}, lock={3:0}, x=0] [L701] FCALL, FORK 0 pthread_create( &t, ((void *)0), thread, ((void *)0) ) VAL [arg={0:0}, cond={5:0}, lock={3:0}, x=0] [L693] 1 !(x == 42) ? __VERIFIER_error() : (void)0 VAL [arg={0:0}, arg={0:0}, cond={5:0}, lock={3:0}, x=0] [L693] 1 __VERIFIER_error() VAL [arg={0:0}, arg={0:0}, cond={5:0}, lock={3:0}, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 92 locations, 4 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=148occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...