./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_dbbb9489-e423-4efc-aa5c-e6f962310543/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbbb9489-e423-4efc-aa5c-e6f962310543/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbbb9489-e423-4efc-aa5c-e6f962310543/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbbb9489-e423-4efc-aa5c-e6f962310543/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbbb9489-e423-4efc-aa5c-e6f962310543/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbbb9489-e423-4efc-aa5c-e6f962310543/bin/utaipan-6cKwYrpEi9 --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 50de8acec85b0b2508f1f33521d9ab6717fa1b5141d6b9e2d08fcb4af894112b --- 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-6b4ec56 [2022-11-20 21:08:31,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 21:08:31,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 21:08:31,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 21:08:31,879 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 21:08:31,884 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 21:08:31,886 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 21:08:31,891 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 21:08:31,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 21:08:31,894 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 21:08:31,896 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 21:08:31,897 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 21:08:31,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 21:08:31,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 21:08:31,904 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 21:08:31,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 21:08:31,907 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 21:08:31,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 21:08:31,914 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 21:08:31,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 21:08:31,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 21:08:31,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 21:08:31,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 21:08:31,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 21:08:31,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 21:08:31,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 21:08:31,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 21:08:31,951 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 21:08:31,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 21:08:31,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 21:08:31,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 21:08:31,957 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 21:08:31,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 21:08:31,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 21:08:31,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 21:08:31,961 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 21:08:31,962 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 21:08:31,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 21:08:31,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 21:08:31,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 21:08:31,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 21:08:31,976 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbbb9489-e423-4efc-aa5c-e6f962310543/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 21:08:32,012 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 21:08:32,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 21:08:32,015 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 21:08:32,015 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 21:08:32,016 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 21:08:32,017 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 21:08:32,017 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 21:08:32,017 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 21:08:32,017 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 21:08:32,017 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 21:08:32,018 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 21:08:32,019 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 21:08:32,019 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 21:08:32,019 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 21:08:32,019 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 21:08:32,020 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 21:08:32,020 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 21:08:32,020 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 21:08:32,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 21:08:32,021 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 21:08:32,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 21:08:32,022 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 21:08:32,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 21:08:32,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 21:08:32,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 21:08:32,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 21:08:32,023 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 21:08:32,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 21:08:32,024 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 21:08:32,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 21:08:32,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 21:08:32,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 21:08:32,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:08:32,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 21:08:32,026 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 21:08:32,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 21:08:32,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 21:08:32,026 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 21:08:32,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 21:08:32,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 21:08:32,027 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 21:08:32,027 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_dbbb9489-e423-4efc-aa5c-e6f962310543/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbbb9489-e423-4efc-aa5c-e6f962310543/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50de8acec85b0b2508f1f33521d9ab6717fa1b5141d6b9e2d08fcb4af894112b [2022-11-20 21:08:32,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 21:08:32,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 21:08:32,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 21:08:32,392 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 21:08:32,392 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 21:08:32,408 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbbb9489-e423-4efc-aa5c-e6f962310543/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i [2022-11-20 21:08:35,380 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 21:08:35,648 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 21:08:35,648 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbbb9489-e423-4efc-aa5c-e6f962310543/sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i [2022-11-20 21:08:35,664 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbbb9489-e423-4efc-aa5c-e6f962310543/bin/utaipan-6cKwYrpEi9/data/02ad29a21/50bc0062f4ad4be3931d40a6f20b347d/FLAG260ec6e87 [2022-11-20 21:08:35,683 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbbb9489-e423-4efc-aa5c-e6f962310543/bin/utaipan-6cKwYrpEi9/data/02ad29a21/50bc0062f4ad4be3931d40a6f20b347d [2022-11-20 21:08:35,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 21:08:35,687 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 21:08:35,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 21:08:35,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 21:08:35,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 21:08:35,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:08:35" (1/1) ... [2022-11-20 21:08:35,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f9106fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:08:35, skipping insertion in model container [2022-11-20 21:08:35,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:08:35" (1/1) ... [2022-11-20 21:08:35,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 21:08:35,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:08:36,168 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_dbbb9489-e423-4efc-aa5c-e6f962310543/sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i[30176,30189] [2022-11-20 21:08:36,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:08:36,222 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 21:08:36,263 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_dbbb9489-e423-4efc-aa5c-e6f962310543/sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i[30176,30189] [2022-11-20 21:08:36,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:08:36,324 INFO L208 MainTranslator]: Completed translation [2022-11-20 21:08:36,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:08:36 WrapperNode [2022-11-20 21:08:36,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 21:08:36,326 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 21:08:36,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 21:08:36,326 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 21:08:36,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:08:36" (1/1) ... [2022-11-20 21:08:36,351 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:08:36" (1/1) ... [2022-11-20 21:08:36,377 INFO L138 Inliner]: procedures = 172, calls = 37, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 200 [2022-11-20 21:08:36,378 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 21:08:36,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 21:08:36,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 21:08:36,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 21:08:36,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:08:36" (1/1) ... [2022-11-20 21:08:36,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:08:36" (1/1) ... [2022-11-20 21:08:36,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:08:36" (1/1) ... [2022-11-20 21:08:36,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:08:36" (1/1) ... [2022-11-20 21:08:36,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:08:36" (1/1) ... [2022-11-20 21:08:36,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:08:36" (1/1) ... [2022-11-20 21:08:36,408 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:08:36" (1/1) ... [2022-11-20 21:08:36,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:08:36" (1/1) ... [2022-11-20 21:08:36,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 21:08:36,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 21:08:36,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 21:08:36,414 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 21:08:36,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:08:36" (1/1) ... [2022-11-20 21:08:36,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:08:36,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbbb9489-e423-4efc-aa5c-e6f962310543/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:08:36,447 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbbb9489-e423-4efc-aa5c-e6f962310543/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 21:08:36,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbbb9489-e423-4efc-aa5c-e6f962310543/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 21:08:36,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 21:08:36,492 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-20 21:08:36,492 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-20 21:08:36,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 21:08:36,493 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 21:08:36,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 21:08:36,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 21:08:36,493 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-20 21:08:36,494 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-20 21:08:36,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 21:08:36,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 21:08:36,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 21:08:36,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 21:08:36,496 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 21:08:36,654 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 21:08:36,668 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 21:08:37,046 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 21:08:37,054 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 21:08:37,054 INFO L300 CfgBuilder]: Removed 24 assume(true) statements. [2022-11-20 21:08:37,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:08:37 BoogieIcfgContainer [2022-11-20 21:08:37,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 21:08:37,058 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 21:08:37,058 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 21:08:37,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 21:08:37,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:08:35" (1/3) ... [2022-11-20 21:08:37,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7b6cbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:08:37, skipping insertion in model container [2022-11-20 21:08:37,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:08:36" (2/3) ... [2022-11-20 21:08:37,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7b6cbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:08:37, skipping insertion in model container [2022-11-20 21:08:37,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:08:37" (3/3) ... [2022-11-20 21:08:37,080 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_04-munge_racefree.i [2022-11-20 21:08:37,089 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 21:08:37,099 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 21:08:37,099 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 21:08:37,099 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 21:08:37,270 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-20 21:08:37,304 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 21:08:37,319 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 183 places, 210 transitions, 442 flow [2022-11-20 21:08:37,322 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 183 places, 210 transitions, 442 flow [2022-11-20 21:08:37,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 210 transitions, 442 flow [2022-11-20 21:08:37,470 INFO L130 PetriNetUnfolder]: 58/374 cut-off events. [2022-11-20 21:08:37,470 INFO L131 PetriNetUnfolder]: For 8/13 co-relation queries the response was YES. [2022-11-20 21:08:37,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394 conditions, 374 events. 58/374 cut-off events. For 8/13 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1592 event pairs, 0 based on Foata normal form. 0/307 useless extension candidates. Maximal degree in co-relation 197. Up to 8 conditions per place. [2022-11-20 21:08:37,508 INFO L119 LiptonReduction]: Number of co-enabled transitions 17328 [2022-11-20 21:08:42,507 INFO L134 LiptonReduction]: Checked pairs total: 29046 [2022-11-20 21:08:42,508 INFO L136 LiptonReduction]: Total number of compositions: 175 [2022-11-20 21:08:42,516 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 58 places, 80 transitions, 182 flow [2022-11-20 21:08:42,691 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3402 states, 3383 states have (on average 3.8740762636712978) internal successors, (13106), 3401 states have internal predecessors, (13106), 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) [2022-11-20 21:08:42,715 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 21:08:42,723 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;@75d0bd4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 21:08:42,723 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-20 21:08:42,736 INFO L276 IsEmpty]: Start isEmpty. Operand has 3402 states, 3383 states have (on average 3.8740762636712978) internal successors, (13106), 3401 states have internal predecessors, (13106), 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) [2022-11-20 21:08:42,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 21:08:42,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:08:42,743 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-20 21:08:42,743 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-20 21:08:42,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:08:42,748 INFO L85 PathProgramCache]: Analyzing trace with hash -203968117, now seen corresponding path program 1 times [2022-11-20 21:08:42,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:08:42,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925168894] [2022-11-20 21:08:42,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:08:42,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:08:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 21:08:42,905 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 21:08:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 21:08:42,966 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-20 21:08:42,967 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 21:08:42,968 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-11-20 21:08:42,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-11-20 21:08:42,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-11-20 21:08:42,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-11-20 21:08:42,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-11-20 21:08:42,972 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-11-20 21:08:42,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 21:08:42,975 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-20 21:08:42,977 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 21:08:42,977 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-20 21:08:43,036 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-20 21:08:43,040 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 21:08:43,041 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 279 places, 330 transitions, 708 flow [2022-11-20 21:08:43,041 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 279 places, 330 transitions, 708 flow [2022-11-20 21:08:43,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 279 places, 330 transitions, 708 flow [2022-11-20 21:08:43,374 INFO L130 PetriNetUnfolder]: 197/1089 cut-off events. [2022-11-20 21:08:43,375 INFO L131 PetriNetUnfolder]: For 72/86 co-relation queries the response was YES. [2022-11-20 21:08:43,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1186 conditions, 1089 events. 197/1089 cut-off events. For 72/86 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 6447 event pairs, 1 based on Foata normal form. 0/897 useless extension candidates. Maximal degree in co-relation 673. Up to 32 conditions per place. [2022-11-20 21:08:43,472 INFO L119 LiptonReduction]: Number of co-enabled transitions 62928 [2022-11-20 21:08:49,668 INFO L134 LiptonReduction]: Checked pairs total: 130876 [2022-11-20 21:08:49,668 INFO L136 LiptonReduction]: Total number of compositions: 269 [2022-11-20 21:08:49,670 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 100 places, 143 transitions, 334 flow