./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/stateful01-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22b4be0-47b8-4489-84c5-bae70cb9459a/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22b4be0-47b8-4489-84c5-bae70cb9459a/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22b4be0-47b8-4489-84c5-bae70cb9459a/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22b4be0-47b8-4489-84c5-bae70cb9459a/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/stateful01-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22b4be0-47b8-4489-84c5-bae70cb9459a/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22b4be0-47b8-4489-84c5-bae70cb9459a/bin/utaipan-gh47qXpMRh --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 4f746010868b331b940ee2293ff3d78b9aa516b26fde95d84f76493b23741d03 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 16:11:33,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 16:11:33,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 16:11:33,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 16:11:33,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 16:11:33,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 16:11:33,174 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 16:11:33,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 16:11:33,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 16:11:33,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 16:11:33,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 16:11:33,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 16:11:33,179 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 16:11:33,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 16:11:33,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 16:11:33,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 16:11:33,181 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 16:11:33,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 16:11:33,183 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 16:11:33,184 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 16:11:33,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 16:11:33,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 16:11:33,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 16:11:33,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 16:11:33,190 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 16:11:33,190 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 16:11:33,191 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 16:11:33,191 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 16:11:33,191 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 16:11:33,192 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 16:11:33,192 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 16:11:33,193 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 16:11:33,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 16:11:33,194 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 16:11:33,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 16:11:33,195 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 16:11:33,195 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 16:11:33,195 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 16:11:33,195 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 16:11:33,196 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 16:11:33,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 16:11:33,197 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22b4be0-47b8-4489-84c5-bae70cb9459a/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 16:11:33,212 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 16:11:33,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 16:11:33,212 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 16:11:33,212 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 16:11:33,213 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 16:11:33,213 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 16:11:33,213 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 16:11:33,213 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 16:11:33,213 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 16:11:33,213 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 16:11:33,213 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 16:11:33,213 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 16:11:33,214 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 16:11:33,214 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 16:11:33,214 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 16:11:33,214 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 16:11:33,214 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 16:11:33,214 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 16:11:33,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 16:11:33,215 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 16:11:33,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 16:11:33,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 16:11:33,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 16:11:33,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 16:11:33,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 16:11:33,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 16:11:33,216 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 16:11:33,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 16:11:33,216 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 16:11:33,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 16:11:33,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 16:11:33,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 16:11:33,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 16:11:33,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 16:11:33,217 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 16:11:33,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 16:11:33,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 16:11:33,217 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 16:11:33,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 16:11:33,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 16:11:33,217 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 16:11:33,217 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22b4be0-47b8-4489-84c5-bae70cb9459a/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22b4be0-47b8-4489-84c5-bae70cb9459a/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f746010868b331b940ee2293ff3d78b9aa516b26fde95d84f76493b23741d03 [2022-12-14 16:11:33,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 16:11:33,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 16:11:33,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 16:11:33,396 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 16:11:33,397 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 16:11:33,398 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22b4be0-47b8-4489-84c5-bae70cb9459a/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/pthread/stateful01-1.i [2022-12-14 16:11:35,952 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 16:11:36,131 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 16:11:36,131 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22b4be0-47b8-4489-84c5-bae70cb9459a/sv-benchmarks/c/pthread/stateful01-1.i [2022-12-14 16:11:36,139 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22b4be0-47b8-4489-84c5-bae70cb9459a/bin/utaipan-gh47qXpMRh/data/0a0f43a74/50f8b1f619214d3ab08ea6ec4b12e5ec/FLAG105859f01 [2022-12-14 16:11:36,528 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22b4be0-47b8-4489-84c5-bae70cb9459a/bin/utaipan-gh47qXpMRh/data/0a0f43a74/50f8b1f619214d3ab08ea6ec4b12e5ec [2022-12-14 16:11:36,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 16:11:36,531 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 16:11:36,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 16:11:36,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 16:11:36,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 16:11:36,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:11:36" (1/1) ... [2022-12-14 16:11:36,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bf5491a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:36, skipping insertion in model container [2022-12-14 16:11:36,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:11:36" (1/1) ... [2022-12-14 16:11:36,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 16:11:36,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 16:11:36,767 WARN L237 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_c22b4be0-47b8-4489-84c5-bae70cb9459a/sv-benchmarks/c/pthread/stateful01-1.i[30826,30839] [2022-12-14 16:11:36,771 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 16:11:36,780 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 16:11:36,809 WARN L237 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_c22b4be0-47b8-4489-84c5-bae70cb9459a/sv-benchmarks/c/pthread/stateful01-1.i[30826,30839] [2022-12-14 16:11:36,810 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 16:11:36,832 INFO L208 MainTranslator]: Completed translation [2022-12-14 16:11:36,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:36 WrapperNode [2022-12-14 16:11:36,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 16:11:36,834 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 16:11:36,834 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 16:11:36,834 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 16:11:36,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:36" (1/1) ... [2022-12-14 16:11:36,848 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:36" (1/1) ... [2022-12-14 16:11:36,862 INFO L138 Inliner]: procedures = 168, calls = 34, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2022-12-14 16:11:36,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 16:11:36,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 16:11:36,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 16:11:36,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 16:11:36,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:36" (1/1) ... [2022-12-14 16:11:36,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:36" (1/1) ... [2022-12-14 16:11:36,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:36" (1/1) ... [2022-12-14 16:11:36,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:36" (1/1) ... [2022-12-14 16:11:36,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:36" (1/1) ... [2022-12-14 16:11:36,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:36" (1/1) ... [2022-12-14 16:11:36,877 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:36" (1/1) ... [2022-12-14 16:11:36,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:36" (1/1) ... [2022-12-14 16:11:36,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 16:11:36,880 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 16:11:36,880 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 16:11:36,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 16:11:36,881 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:36" (1/1) ... [2022-12-14 16:11:36,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 16:11:36,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22b4be0-47b8-4489-84c5-bae70cb9459a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:11:36,905 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22b4be0-47b8-4489-84c5-bae70cb9459a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 16:11:36,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22b4be0-47b8-4489-84c5-bae70cb9459a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 16:11:36,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 16:11:36,938 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-14 16:11:36,938 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-14 16:11:36,938 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-14 16:11:36,939 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-14 16:11:36,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 16:11:36,939 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-14 16:11:36,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 16:11:36,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 16:11:36,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 16:11:36,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 16:11:36,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 16:11:36,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 16:11:36,941 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 16:11:37,042 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 16:11:37,044 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 16:11:37,193 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 16:11:37,199 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 16:11:37,199 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 16:11:37,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:11:37 BoogieIcfgContainer [2022-12-14 16:11:37,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 16:11:37,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 16:11:37,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 16:11:37,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 16:11:37,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:11:36" (1/3) ... [2022-12-14 16:11:37,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb4a33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:11:37, skipping insertion in model container [2022-12-14 16:11:37,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:11:36" (2/3) ... [2022-12-14 16:11:37,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb4a33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:11:37, skipping insertion in model container [2022-12-14 16:11:37,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:11:37" (3/3) ... [2022-12-14 16:11:37,207 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful01-1.i [2022-12-14 16:11:37,213 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 16:11:37,221 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 16:11:37,221 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 16:11:37,221 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 16:11:37,270 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-14 16:11:37,293 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 16:11:37,304 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 93 transitions, 202 flow [2022-12-14 16:11:37,306 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 93 transitions, 202 flow [2022-12-14 16:11:37,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 93 transitions, 202 flow [2022-12-14 16:11:37,349 INFO L130 PetriNetUnfolder]: 1/91 cut-off events. [2022-12-14 16:11:37,349 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-14 16:11:37,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 91 events. 1/91 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2022-12-14 16:11:37,355 INFO L119 LiptonReduction]: Number of co-enabled transitions 732 [2022-12-14 16:11:39,719 INFO L134 LiptonReduction]: Checked pairs total: 2359 [2022-12-14 16:11:39,719 INFO L136 LiptonReduction]: Total number of compositions: 74 [2022-12-14 16:11:39,724 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 26 transitions, 68 flow [2022-12-14 16:11:39,741 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 162 states, 161 states have (on average 2.1552795031055902) internal successors, (347), 161 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 16:11:39,753 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 16:11:39,757 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1ebeb4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 16:11:39,757 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-14 16:11:39,759 INFO L276 IsEmpty]: Start isEmpty. Operand has 162 states, 161 states have (on average 2.1552795031055902) internal successors, (347), 161 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 16:11:39,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 16:11:39,764 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:11:39,765 INFO L195 NwaCegarLoop]: 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] [2022-12-14 16:11:39,765 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-14 16:11:39,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:11:39,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1965182358, now seen corresponding path program 1 times [2022-12-14 16:11:39,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:11:39,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646004467] [2022-12-14 16:11:39,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:11:39,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:11:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:11:40,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:11:40,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 16:11:40,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646004467] [2022-12-14 16:11:40,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646004467] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 16:11:40,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 16:11:40,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 16:11:40,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297998766] [2022-12-14 16:11:40,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 16:11:40,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 16:11:40,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:11:40,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 16:11:40,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 16:11:40,083 INFO L87 Difference]: Start difference. First operand has 162 states, 161 states have (on average 2.1552795031055902) internal successors, (347), 161 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 16:11:40,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 16:11:40,142 INFO L93 Difference]: Finished difference Result 114 states and 187 transitions. [2022-12-14 16:11:40,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 16:11:40,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-12-14 16:11:40,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 16:11:40,150 INFO L225 Difference]: With dead ends: 114 [2022-12-14 16:11:40,150 INFO L226 Difference]: Without dead ends: 114 [2022-12-14 16:11:40,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 16:11:40,153 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 16:11:40,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 5 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 16:11:40,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-12-14 16:11:40,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2022-12-14 16:11:40,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.654867256637168) internal successors, (187), 113 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 16:11:40,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 187 transitions. [2022-12-14 16:11:40,187 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 187 transitions. Word has length 23 [2022-12-14 16:11:40,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 16:11:40,188 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 187 transitions. [2022-12-14 16:11:40,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 16:11:40,188 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 187 transitions. [2022-12-14 16:11:40,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 16:11:40,189 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:11:40,189 INFO L195 NwaCegarLoop]: 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] [2022-12-14 16:11:40,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 16:11:40,190 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-14 16:11:40,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:11:40,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1978709486, now seen corresponding path program 2 times [2022-12-14 16:11:40,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:11:40,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690155471] [2022-12-14 16:11:40,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:11:40,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:11:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 16:11:40,224 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 16:11:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 16:11:40,276 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 16:11:40,276 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 16:11:40,277 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-14 16:11:40,279 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-14 16:11:40,279 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-14 16:11:40,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 16:11:40,281 INFO L445 BasicCegarLoop]: Path program histogram: [2] [2022-12-14 16:11:40,285 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-14 16:11:40,285 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 16:11:40,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 04:11:40 BasicIcfg [2022-12-14 16:11:40,308 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 16:11:40,309 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 16:11:40,309 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 16:11:40,309 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 16:11:40,309 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:11:37" (3/4) ... [2022-12-14 16:11:40,311 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-14 16:11:40,344 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22b4be0-47b8-4489-84c5-bae70cb9459a/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 16:11:40,344 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 16:11:40,345 INFO L158 Benchmark]: Toolchain (without parser) took 3813.71ms. Allocated memory is still 153.1MB. Free memory was 116.9MB in the beginning and 108.4MB in the end (delta: 8.5MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. [2022-12-14 16:11:40,345 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 111.1MB. Free memory is still 86.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 16:11:40,346 INFO L158 Benchmark]: CACSL2BoogieTranslator took 301.02ms. Allocated memory is still 153.1MB. Free memory was 116.9MB in the beginning and 97.6MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-14 16:11:40,346 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.96ms. Allocated memory is still 153.1MB. Free memory was 97.6MB in the beginning and 95.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 16:11:40,347 INFO L158 Benchmark]: Boogie Preprocessor took 16.97ms. Allocated memory is still 153.1MB. Free memory was 95.5MB in the beginning and 94.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 16:11:40,347 INFO L158 Benchmark]: RCFGBuilder took 320.33ms. Allocated memory is still 153.1MB. Free memory was 94.0MB in the beginning and 79.8MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 16:11:40,348 INFO L158 Benchmark]: TraceAbstraction took 3106.21ms. Allocated memory is still 153.1MB. Free memory was 79.3MB in the beginning and 113.6MB in the end (delta: -34.3MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. [2022-12-14 16:11:40,348 INFO L158 Benchmark]: Witness Printer took 35.63ms. Allocated memory is still 153.1MB. Free memory was 113.6MB in the beginning and 108.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 16:11:40,351 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 111.1MB. Free memory is still 86.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 301.02ms. Allocated memory is still 153.1MB. Free memory was 116.9MB in the beginning and 97.6MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.96ms. Allocated memory is still 153.1MB. Free memory was 97.6MB in the beginning and 95.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.97ms. Allocated memory is still 153.1MB. Free memory was 95.5MB in the beginning and 94.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 320.33ms. Allocated memory is still 153.1MB. Free memory was 94.0MB in the beginning and 79.8MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3106.21ms. Allocated memory is still 153.1MB. Free memory was 79.3MB in the beginning and 113.6MB in the end (delta: -34.3MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. * Witness Printer took 35.63ms. Allocated memory is still 153.1MB. Free memory was 113.6MB in the beginning and 108.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 99 PlacesBefore, 33 PlacesAfterwards, 93 TransitionsBefore, 26 TransitionsAfterwards, 732 CoEnabledTransitionPairs, 6 FixpointIterations, 48 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 74 TotalNumberOfCompositions, 2359 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1283, independent: 1125, independent conditional: 0, independent unconditional: 1125, dependent: 158, dependent conditional: 0, dependent unconditional: 158, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 499, independent: 469, independent conditional: 0, independent unconditional: 469, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 499, independent: 456, independent conditional: 0, independent unconditional: 456, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 43, independent: 13, independent conditional: 0, independent unconditional: 13, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 89, independent: 32, independent conditional: 0, independent unconditional: 32, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1283, independent: 656, independent conditional: 0, independent unconditional: 656, dependent: 128, dependent conditional: 0, dependent unconditional: 128, unknown: 499, unknown conditional: 0, unknown unconditional: 499] , Statistics on independence cache: Total cache size (in pairs): 130, Positive cache size: 108, Positive conditional cache size: 0, Positive unconditional cache size: 108, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 727]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L692] 0 pthread_mutex_t ma, mb; [L693] 0 int data1, data2; [L716] 0 pthread_t t1, t2; [L719] 0 data1 = 10 [L720] 0 data2 = 10 [L721] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data1=10, data2=10, ma={3:0}, mb={4:0}, pthread_create(&t1, 0, thread1, 0)=-2, t1={6:0}, t2={5:0}] [L697] 1 data1++ VAL [arg={0:0}, arg={0:0}, data1=11, data1++=10, data2=10, ma={3:0}, mb={4:0}] [L722] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data1=11, data1++=10, data2=10, ma={3:0}, mb={4:0}, pthread_create(&t2, 0, thread2, 0)=-1, t1={6:0}, t2={5:0}] [L723] 0 \read(t1) VAL [\read(t1)=-2, arg={0:0}, arg={0:0}, arg={0:0}, data1=11, data1++=10, data2=10, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L700] 1 data2++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, data1=11, data2=11, ma={3:0}, mb={4:0}] [L702] 1 return 0; [L723] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=-2, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=11, data2=11, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L724] 0 \read(t2) VAL [\read(t2)=-1, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=11, data2=11, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L707] 2 data1+=5 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=11, ma={3:0}, mb={4:0}] [L710] 2 data2-=6 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}] [L712] 2 return 0; [L724] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=-1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L725] COND TRUE 0 data1==16 && data2==5 [L727] 0 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] - UnprovableResult [Line: 721]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 123 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 3.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 36 IncrementalHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 5 mSDtfsCounter, 36 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=162occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 52 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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! [2022-12-14 16:11:40,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22b4be0-47b8-4489-84c5-bae70cb9459a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE