./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_unknown_1_pos.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df7c11d-6c28-4995-a922-6b2e9281c316/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df7c11d-6c28-4995-a922-6b2e9281c316/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_3df7c11d-6c28-4995-a922-6b2e9281c316/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df7c11d-6c28-4995-a922-6b2e9281c316/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_unknown_1_pos.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df7c11d-6c28-4995-a922-6b2e9281c316/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_3df7c11d-6c28-4995-a922-6b2e9281c316/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 1cd82b96c01a730247618eab1464d47c03eec9013c1d245312913e94981f2bce --- 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 07:49:06,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 07:49:06,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 07:49:06,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 07:49:06,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 07:49:06,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 07:49:06,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 07:49:06,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 07:49:06,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 07:49:06,823 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 07:49:06,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 07:49:06,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 07:49:06,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 07:49:06,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 07:49:06,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 07:49:06,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 07:49:06,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 07:49:06,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 07:49:06,830 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 07:49:06,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 07:49:06,833 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 07:49:06,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 07:49:06,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 07:49:06,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 07:49:06,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 07:49:06,838 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 07:49:06,838 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 07:49:06,839 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 07:49:06,839 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 07:49:06,840 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 07:49:06,840 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 07:49:06,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 07:49:06,842 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 07:49:06,842 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 07:49:06,843 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 07:49:06,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 07:49:06,844 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 07:49:06,844 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 07:49:06,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 07:49:06,845 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 07:49:06,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 07:49:06,846 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df7c11d-6c28-4995-a922-6b2e9281c316/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 07:49:06,868 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 07:49:06,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 07:49:06,869 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 07:49:06,869 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 07:49:06,870 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 07:49:06,870 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 07:49:06,870 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 07:49:06,870 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 07:49:06,870 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 07:49:06,871 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 07:49:06,871 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 07:49:06,871 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 07:49:06,871 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 07:49:06,871 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 07:49:06,871 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 07:49:06,872 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 07:49:06,872 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 07:49:06,872 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 07:49:06,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 07:49:06,873 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 07:49:06,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 07:49:06,873 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 07:49:06,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 07:49:06,874 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 07:49:06,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 07:49:06,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 07:49:06,874 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 07:49:06,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 07:49:06,875 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 07:49:06,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 07:49:06,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 07:49:06,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 07:49:06,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:49:06,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 07:49:06,876 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 07:49:06,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 07:49:06,876 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 07:49:06,876 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 07:49:06,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 07:49:06,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 07:49:06,877 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 07:49:06,877 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_3df7c11d-6c28-4995-a922-6b2e9281c316/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df7c11d-6c28-4995-a922-6b2e9281c316/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1cd82b96c01a730247618eab1464d47c03eec9013c1d245312913e94981f2bce [2022-12-14 07:49:07,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 07:49:07,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 07:49:07,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 07:49:07,080 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 07:49:07,081 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 07:49:07,082 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df7c11d-6c28-4995-a922-6b2e9281c316/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_unknown_1_pos.i [2022-12-14 07:49:09,622 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 07:49:09,821 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 07:49:09,822 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df7c11d-6c28-4995-a922-6b2e9281c316/sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_unknown_1_pos.i [2022-12-14 07:49:09,833 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df7c11d-6c28-4995-a922-6b2e9281c316/bin/utaipan-gh47qXpMRh/data/1df4ccb4b/6c16ebb8a1fe4b0e85a3747fabdad2f2/FLAG21a8029ea [2022-12-14 07:49:09,844 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df7c11d-6c28-4995-a922-6b2e9281c316/bin/utaipan-gh47qXpMRh/data/1df4ccb4b/6c16ebb8a1fe4b0e85a3747fabdad2f2 [2022-12-14 07:49:09,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 07:49:09,847 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 07:49:09,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 07:49:09,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 07:49:09,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 07:49:09,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:49:09" (1/1) ... [2022-12-14 07:49:09,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e3c6a9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:49:09, skipping insertion in model container [2022-12-14 07:49:09,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:49:09" (1/1) ... [2022-12-14 07:49:09,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 07:49:09,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:49:10,004 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_3df7c11d-6c28-4995-a922-6b2e9281c316/sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_unknown_1_pos.i[1103,1116] [2022-12-14 07:49:10,227 WARN L623 FunctionHandler]: Unknown extern function sleep [2022-12-14 07:49:10,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:49:10,238 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 07:49:10,246 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_3df7c11d-6c28-4995-a922-6b2e9281c316/sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_unknown_1_pos.i[1103,1116] [2022-12-14 07:49:10,268 WARN L623 FunctionHandler]: Unknown extern function sleep [2022-12-14 07:49:10,269 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:49:10,314 INFO L208 MainTranslator]: Completed translation [2022-12-14 07:49:10,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:49:10 WrapperNode [2022-12-14 07:49:10,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 07:49:10,316 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 07:49:10,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 07:49:10,316 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 07:49:10,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:49:10" (1/1) ... [2022-12-14 07:49:10,340 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:49:10" (1/1) ... [2022-12-14 07:49:10,359 INFO L138 Inliner]: procedures = 354, calls = 38, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 74 [2022-12-14 07:49:10,359 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 07:49:10,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 07:49:10,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 07:49:10,360 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 07:49:10,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:49:10" (1/1) ... [2022-12-14 07:49:10,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:49:10" (1/1) ... [2022-12-14 07:49:10,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:49:10" (1/1) ... [2022-12-14 07:49:10,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:49:10" (1/1) ... [2022-12-14 07:49:10,378 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:49:10" (1/1) ... [2022-12-14 07:49:10,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:49:10" (1/1) ... [2022-12-14 07:49:10,383 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:49:10" (1/1) ... [2022-12-14 07:49:10,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:49:10" (1/1) ... [2022-12-14 07:49:10,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 07:49:10,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 07:49:10,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 07:49:10,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 07:49:10,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:49:10" (1/1) ... [2022-12-14 07:49:10,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:49:10,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df7c11d-6c28-4995-a922-6b2e9281c316/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:49:10,413 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df7c11d-6c28-4995-a922-6b2e9281c316/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 07:49:10,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df7c11d-6c28-4995-a922-6b2e9281c316/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 07:49:10,445 INFO L130 BoogieDeclarations]: Found specification of procedure sleep [2022-12-14 07:49:10,445 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2022-12-14 07:49:10,445 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2022-12-14 07:49:10,445 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2022-12-14 07:49:10,446 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2022-12-14 07:49:10,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 07:49:10,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 07:49:10,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 07:49:10,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 07:49:10,446 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-14 07:49:10,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 07:49:10,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 07:49:10,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 07:49:10,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 07:49:10,448 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 07:49:10,655 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 07:49:10,656 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 07:49:10,777 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 07:49:10,782 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 07:49:10,782 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 07:49:10,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:49:10 BoogieIcfgContainer [2022-12-14 07:49:10,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 07:49:10,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 07:49:10,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 07:49:10,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 07:49:10,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:49:09" (1/3) ... [2022-12-14 07:49:10,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54871d16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:49:10, skipping insertion in model container [2022-12-14 07:49:10,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:49:10" (2/3) ... [2022-12-14 07:49:10,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54871d16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:49:10, skipping insertion in model container [2022-12-14 07:49:10,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:49:10" (3/3) ... [2022-12-14 07:49:10,790 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_67-pthread_cond_wait_unknown_1_pos.i [2022-12-14 07:49:10,796 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 07:49:10,803 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 07:49:10,804 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 07:49:10,804 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 07:49:10,841 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-14 07:49:10,862 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 07:49:10,872 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 94 transitions, 204 flow [2022-12-14 07:49:10,874 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 94 transitions, 204 flow [2022-12-14 07:49:10,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 94 transitions, 204 flow [2022-12-14 07:49:10,904 INFO L130 PetriNetUnfolder]: 1/92 cut-off events. [2022-12-14 07:49:10,904 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-14 07:49:10,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 92 events. 1/92 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 56 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2022-12-14 07:49:10,908 INFO L119 LiptonReduction]: Number of co-enabled transitions 876 [2022-12-14 07:49:13,364 INFO L134 LiptonReduction]: Checked pairs total: 2313 [2022-12-14 07:49:13,364 INFO L136 LiptonReduction]: Total number of compositions: 80 [2022-12-14 07:49:13,369 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 29 places, 23 transitions, 62 flow [2022-12-14 07:49:13,381 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 80 states, 78 states have (on average 2.051282051282051) internal successors, (160), 79 states have internal predecessors, (160), 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 07:49:13,393 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:49:13,398 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;@2565b004, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:49:13,398 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-14 07:49:13,399 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 78 states have (on average 2.051282051282051) internal successors, (160), 79 states have internal predecessors, (160), 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 07:49:13,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 07:49:13,403 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:49:13,403 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 07:49:13,403 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-14 07:49:13,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:49:13,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1242509919, now seen corresponding path program 1 times [2022-12-14 07:49:13,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:49:13,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793418094] [2022-12-14 07:49:13,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:49:13,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:49:13,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:49:13,718 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 07:49:13,718 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:49:13,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793418094] [2022-12-14 07:49:13,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793418094] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:49:13,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:49:13,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 07:49:13,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514797819] [2022-12-14 07:49:13,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:49:13,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:49:13,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:49:13,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:49:13,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:49:13,743 INFO L87 Difference]: Start difference. First operand has 80 states, 78 states have (on average 2.051282051282051) internal successors, (160), 79 states have internal predecessors, (160), 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, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 07:49:13,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:49:13,779 INFO L93 Difference]: Finished difference Result 76 states and 144 transitions. [2022-12-14 07:49:13,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:49:13,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2022-12-14 07:49:13,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:49:13,786 INFO L225 Difference]: With dead ends: 76 [2022-12-14 07:49:13,786 INFO L226 Difference]: Without dead ends: 44 [2022-12-14 07:49:13,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 07:49:13,789 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 6 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:49:13,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:49:13,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-12-14 07:49:13,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-12-14 07:49:13,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.7906976744186047) internal successors, (77), 43 states have internal predecessors, (77), 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 07:49:13,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 77 transitions. [2022-12-14 07:49:13,812 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 77 transitions. Word has length 6 [2022-12-14 07:49:13,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:49:13,812 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 77 transitions. [2022-12-14 07:49:13,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 07:49:13,812 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 77 transitions. [2022-12-14 07:49:13,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 07:49:13,813 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:49:13,813 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:49:13,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 07:49:13,813 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-14 07:49:13,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:49:13,814 INFO L85 PathProgramCache]: Analyzing trace with hash -887200454, now seen corresponding path program 1 times [2022-12-14 07:49:13,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:49:13,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781441406] [2022-12-14 07:49:13,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:49:13,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:49:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:49:13,951 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 07:49:13,951 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:49:13,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781441406] [2022-12-14 07:49:13,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781441406] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:49:13,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:49:13,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 07:49:13,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603326321] [2022-12-14 07:49:13,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:49:13,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 07:49:13,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:49:13,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 07:49:13,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:49:13,954 INFO L87 Difference]: Start difference. First operand 44 states and 77 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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 07:49:14,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:49:14,005 INFO L93 Difference]: Finished difference Result 28 states and 42 transitions. [2022-12-14 07:49:14,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 07:49:14,006 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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 8 [2022-12-14 07:49:14,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:49:14,006 INFO L225 Difference]: With dead ends: 28 [2022-12-14 07:49:14,006 INFO L226 Difference]: Without dead ends: 22 [2022-12-14 07:49:14,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:49:14,008 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:49:14,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:49:14,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-12-14 07:49:14,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-12-14 07:49:14,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 21 states have internal predecessors, (32), 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 07:49:14,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 32 transitions. [2022-12-14 07:49:14,012 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 32 transitions. Word has length 8 [2022-12-14 07:49:14,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:49:14,012 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 32 transitions. [2022-12-14 07:49:14,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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 07:49:14,013 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 32 transitions. [2022-12-14 07:49:14,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 07:49:14,013 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:49:14,013 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:49:14,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 07:49:14,013 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-14 07:49:14,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:49:14,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1734287183, now seen corresponding path program 1 times [2022-12-14 07:49:14,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:49:14,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121827110] [2022-12-14 07:49:14,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:49:14,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:49:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:49:14,037 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 07:49:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:49:14,063 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 07:49:14,063 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 07:49:14,064 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-14 07:49:14,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-14 07:49:14,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-14 07:49:14,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-12-14 07:49:14,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 07:49:14,067 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-14 07:49:14,071 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-14 07:49:14,071 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 07:49:14,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 07:49:14 BasicIcfg [2022-12-14 07:49:14,088 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 07:49:14,088 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 07:49:14,088 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 07:49:14,088 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 07:49:14,089 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:49:10" (3/4) ... [2022-12-14 07:49:14,090 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-14 07:49:14,115 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df7c11d-6c28-4995-a922-6b2e9281c316/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 07:49:14,116 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 07:49:14,116 INFO L158 Benchmark]: Toolchain (without parser) took 4269.39ms. Allocated memory is still 138.4MB. Free memory was 102.1MB in the beginning and 81.2MB in the end (delta: 20.9MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. [2022-12-14 07:49:14,116 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 109.1MB. Free memory is still 85.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:49:14,116 INFO L158 Benchmark]: CACSL2BoogieTranslator took 467.42ms. Allocated memory is still 138.4MB. Free memory was 101.7MB in the beginning and 63.9MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2022-12-14 07:49:14,117 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.84ms. Allocated memory is still 138.4MB. Free memory was 63.9MB in the beginning and 107.3MB in the end (delta: -43.4MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2022-12-14 07:49:14,117 INFO L158 Benchmark]: Boogie Preprocessor took 28.32ms. Allocated memory is still 138.4MB. Free memory was 107.3MB in the beginning and 104.6MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 07:49:14,117 INFO L158 Benchmark]: RCFGBuilder took 395.40ms. Allocated memory is still 138.4MB. Free memory was 104.6MB in the beginning and 85.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-14 07:49:14,117 INFO L158 Benchmark]: TraceAbstraction took 3302.69ms. Allocated memory is still 138.4MB. Free memory was 85.0MB in the beginning and 84.4MB in the end (delta: 681.8kB). Peak memory consumption was 1.6MB. Max. memory is 16.1GB. [2022-12-14 07:49:14,118 INFO L158 Benchmark]: Witness Printer took 27.35ms. Allocated memory is still 138.4MB. Free memory was 84.4MB in the beginning and 81.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 07:49:14,119 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 109.1MB. Free memory is still 85.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 467.42ms. Allocated memory is still 138.4MB. Free memory was 101.7MB in the beginning and 63.9MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.84ms. Allocated memory is still 138.4MB. Free memory was 63.9MB in the beginning and 107.3MB in the end (delta: -43.4MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.32ms. Allocated memory is still 138.4MB. Free memory was 107.3MB in the beginning and 104.6MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 395.40ms. Allocated memory is still 138.4MB. Free memory was 104.6MB in the beginning and 85.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 3302.69ms. Allocated memory is still 138.4MB. Free memory was 85.0MB in the beginning and 84.4MB in the end (delta: 681.8kB). Peak memory consumption was 1.6MB. Max. memory is 16.1GB. * Witness Printer took 27.35ms. Allocated memory is still 138.4MB. Free memory was 84.4MB in the beginning and 81.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.5s, 100 PlacesBefore, 29 PlacesAfterwards, 94 TransitionsBefore, 23 TransitionsAfterwards, 876 CoEnabledTransitionPairs, 7 FixpointIterations, 45 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 80 TotalNumberOfCompositions, 2313 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1455, independent: 1322, independent conditional: 0, independent unconditional: 1322, dependent: 133, dependent conditional: 0, dependent unconditional: 133, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 677, independent: 643, independent conditional: 0, independent unconditional: 643, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 677, independent: 625, independent conditional: 0, independent unconditional: 625, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 52, independent: 18, independent conditional: 0, independent unconditional: 18, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 68, independent: 16, independent conditional: 0, independent unconditional: 16, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1455, independent: 679, independent conditional: 0, independent unconditional: 679, dependent: 99, dependent conditional: 0, dependent unconditional: 99, unknown: 677, unknown conditional: 0, unknown unconditional: 677] , Statistics on independence cache: Total cache size (in pairs): 98, Positive cache size: 84, Positive conditional cache size: 0, Positive unconditional cache size: 84, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, 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: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1351] 0 int g; [L1352] 0 pthread_mutex_t mut = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L1353] 0 pthread_cond_t cond = { { {0}, {0}, {0, 0}, {0, 0}, 0, 0, {0, 0} } }; [L1373] 0 pthread_t t1; [L1374] 0 pthread_t t2; [L1375] FCALL, FORK 0 pthread_create(&t1,((void *)0),f1,((void *)0)) VAL [\old(argc)=1152, argc=1152, argv={1150:1151}, argv={1150:1151}, cond={4:0}, g=0, mut={3:0}, pthread_create(&t1,((void *)0),f1,((void *)0))=-2, ptr={0:0}, t1={5:0}, t2={6:0}] [L1356] 1 g = 1 VAL [cond={4:0}, g=1, mut={3:0}, ptr={0:0}, ptr={0:0}] [L1377] FCALL, FORK 0 pthread_create(&t2,((void *)0),f2,((void *)0)) VAL [\old(argc)=1152, argc=1152, argv={1150:1151}, argv={1150:1151}, cond={4:0}, g=1, mut={3:0}, pthread_create(&t2,((void *)0),f2,((void *)0))=-1, ptr={0:0}, ptr={0:0}, t1={5:0}, t2={6:0}] [L1365] CALL 2 __VERIFIER_assert(g == 0) [L19] COND TRUE 2 !(cond) [L19] 2 reach_error() VAL [\old(cond)=0, cond={4:0}, cond=0, g=1, mut={3:0}, ptr={0:0}, ptr={0:0}] - UnprovableResult [Line: 1375]: 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: 1377]: 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, 126 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 3.2s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 67 IncrementalHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 1 mSDtfsCounter, 67 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 48 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-12-14 07:49:14,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df7c11d-6c28-4995-a922-6b2e9281c316/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