./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 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2562cf98-0e1d-4f82-a839-7081f72a77ce/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2562cf98-0e1d-4f82-a839-7081f72a77ce/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2562cf98-0e1d-4f82-a839-7081f72a77ce/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2562cf98-0e1d-4f82-a839-7081f72a77ce/bin/utaipan-7li7fVZpFI/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_2562cf98-0e1d-4f82-a839-7081f72a77ce/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2562cf98-0e1d-4f82-a839-7081f72a77ce/bin/utaipan-7li7fVZpFI --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-5e519f3 [2022-11-03 03:59:34,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:59:34,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:59:34,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:59:34,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:59:34,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:59:34,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:59:34,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:59:34,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:59:34,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:59:34,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:59:34,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:59:34,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:59:34,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:59:34,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:59:34,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:59:34,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:59:34,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:59:34,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:59:34,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:59:34,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:59:34,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:59:34,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:59:34,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:59:34,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:59:34,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:59:34,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:59:34,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:59:34,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:59:34,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:59:34,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:59:34,991 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:59:34,992 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:59:34,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:59:34,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:59:34,995 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:59:34,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:59:34,996 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:59:34,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:59:34,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:59:34,998 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:59:35,002 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2562cf98-0e1d-4f82-a839-7081f72a77ce/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:59:35,038 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:59:35,040 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:59:35,041 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:59:35,042 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:59:35,043 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:59:35,043 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:59:35,043 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:59:35,043 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:59:35,044 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:59:35,044 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:59:35,045 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:59:35,045 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:59:35,045 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:59:35,046 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:59:35,046 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:59:35,046 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:59:35,046 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:59:35,047 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:59:35,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:59:35,048 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:59:35,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:59:35,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:59:35,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:59:35,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:59:35,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:59:35,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:59:35,049 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:59:35,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:59:35,050 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:59:35,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:59:35,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:59:35,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:59:35,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:59:35,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:59:35,051 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:59:35,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:59:35,052 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:59:35,053 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:59:35,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:59:35,053 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:59:35,053 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:59:35,053 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_2562cf98-0e1d-4f82-a839-7081f72a77ce/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2562cf98-0e1d-4f82-a839-7081f72a77ce/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50de8acec85b0b2508f1f33521d9ab6717fa1b5141d6b9e2d08fcb4af894112b [2022-11-03 03:59:35,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:59:35,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:59:35,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:59:35,380 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:59:35,381 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:59:35,382 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2562cf98-0e1d-4f82-a839-7081f72a77ce/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i [2022-11-03 03:59:35,463 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2562cf98-0e1d-4f82-a839-7081f72a77ce/bin/utaipan-7li7fVZpFI/data/b4d77d3fe/772c894a7b7146b59bdee1aeb839e49c/FLAG312d9d6e7 [2022-11-03 03:59:36,259 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:59:36,260 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2562cf98-0e1d-4f82-a839-7081f72a77ce/sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i [2022-11-03 03:59:36,273 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2562cf98-0e1d-4f82-a839-7081f72a77ce/bin/utaipan-7li7fVZpFI/data/b4d77d3fe/772c894a7b7146b59bdee1aeb839e49c/FLAG312d9d6e7 [2022-11-03 03:59:36,520 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2562cf98-0e1d-4f82-a839-7081f72a77ce/bin/utaipan-7li7fVZpFI/data/b4d77d3fe/772c894a7b7146b59bdee1aeb839e49c [2022-11-03 03:59:36,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:59:36,525 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:59:36,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:59:36,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:59:36,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:59:36,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:59:36" (1/1) ... [2022-11-03 03:59:36,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4056624c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:36, skipping insertion in model container [2022-11-03 03:59:36,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:59:36" (1/1) ... [2022-11-03 03:59:36,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:59:36,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:59:37,115 WARN L230 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_2562cf98-0e1d-4f82-a839-7081f72a77ce/sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i[30176,30189] [2022-11-03 03:59:37,154 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:59:37,177 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:59:37,235 WARN L230 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_2562cf98-0e1d-4f82-a839-7081f72a77ce/sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i[30176,30189] [2022-11-03 03:59:37,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:59:37,283 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:59:37,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:37 WrapperNode [2022-11-03 03:59:37,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:59:37,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:59:37,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:59:37,285 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:59:37,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:37" (1/1) ... [2022-11-03 03:59:37,311 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:37" (1/1) ... [2022-11-03 03:59:37,338 INFO L138 Inliner]: procedures = 172, calls = 37, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 200 [2022-11-03 03:59:37,339 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:59:37,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:59:37,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:59:37,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:59:37,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:37" (1/1) ... [2022-11-03 03:59:37,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:37" (1/1) ... [2022-11-03 03:59:37,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:37" (1/1) ... [2022-11-03 03:59:37,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:37" (1/1) ... [2022-11-03 03:59:37,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:37" (1/1) ... [2022-11-03 03:59:37,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:37" (1/1) ... [2022-11-03 03:59:37,373 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:37" (1/1) ... [2022-11-03 03:59:37,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:37" (1/1) ... [2022-11-03 03:59:37,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:59:37,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:59:37,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:59:37,380 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:59:37,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:37" (1/1) ... [2022-11-03 03:59:37,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:59:37,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2562cf98-0e1d-4f82-a839-7081f72a77ce/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:59:37,430 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2562cf98-0e1d-4f82-a839-7081f72a77ce/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:59:37,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2562cf98-0e1d-4f82-a839-7081f72a77ce/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:59:37,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:59:37,479 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-03 03:59:37,479 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-03 03:59:37,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:59:37,480 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-03 03:59:37,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:59:37,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:59:37,481 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-03 03:59:37,481 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-03 03:59:37,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:59:37,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:59:37,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:59:37,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:59:37,484 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-03 03:59:37,771 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:59:37,787 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:59:38,245 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:59:38,256 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:59:38,256 INFO L300 CfgBuilder]: Removed 24 assume(true) statements. [2022-11-03 03:59:38,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:59:38 BoogieIcfgContainer [2022-11-03 03:59:38,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:59:38,262 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:59:38,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:59:38,267 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:59:38,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:59:36" (1/3) ... [2022-11-03 03:59:38,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70dc8462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:59:38, skipping insertion in model container [2022-11-03 03:59:38,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:37" (2/3) ... [2022-11-03 03:59:38,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70dc8462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:59:38, skipping insertion in model container [2022-11-03 03:59:38,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:59:38" (3/3) ... [2022-11-03 03:59:38,271 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_04-munge_racefree.i [2022-11-03 03:59:38,283 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-03 03:59:38,296 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:59:38,297 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-03 03:59:38,297 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-03 03:59:38,462 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-03 03:59:38,525 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 03:59:38,542 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 183 places, 210 transitions, 442 flow [2022-11-03 03:59:38,546 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 183 places, 210 transitions, 442 flow [2022-11-03 03:59:38,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 210 transitions, 442 flow [2022-11-03 03:59:38,796 INFO L130 PetriNetUnfolder]: 58/374 cut-off events. [2022-11-03 03:59:38,797 INFO L131 PetriNetUnfolder]: For 8/13 co-relation queries the response was YES. [2022-11-03 03:59:38,809 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 1577 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. [2022-11-03 03:59:38,824 INFO L118 LiptonReduction]: Number of co-enabled transitions 17328 [2022-11-03 03:59:44,367 INFO L133 LiptonReduction]: Checked pairs total: 28394 [2022-11-03 03:59:44,367 INFO L135 LiptonReduction]: Total number of compositions: 176 [2022-11-03 03:59:44,375 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 58 places, 79 transitions, 180 flow [2022-11-03 03:59:44,579 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3402 states, 3383 states have (on average 3.821755838013597) internal successors, (12929), 3401 states have internal predecessors, (12929), 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) [2022-11-03 03:59:44,601 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:59:44,609 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;@1a0a1d2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:59:44,610 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-03 03:59:44,622 INFO L276 IsEmpty]: Start isEmpty. Operand has 3402 states, 3383 states have (on average 3.821755838013597) internal successors, (12929), 3401 states have internal predecessors, (12929), 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) [2022-11-03 03:59:44,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 03:59:44,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:44,629 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-03 03:59:44,630 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)] === [2022-11-03 03:59:44,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:44,637 INFO L85 PathProgramCache]: Analyzing trace with hash -182733148, now seen corresponding path program 1 times [2022-11-03 03:59:44,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:44,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015292319] [2022-11-03 03:59:44,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:44,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:44,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 03:59:44,810 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 03:59:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 03:59:44,863 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 03:59:44,865 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 03:59:44,867 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-11-03 03:59:44,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-11-03 03:59:44,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-11-03 03:59:44,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-11-03 03:59:44,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-11-03 03:59:44,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-11-03 03:59:44,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:59:44,875 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-03 03:59:44,878 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-03 03:59:44,879 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-03 03:59:44,928 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-03 03:59:44,933 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 03:59:44,934 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 279 places, 330 transitions, 708 flow [2022-11-03 03:59:44,934 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 279 places, 330 transitions, 708 flow [2022-11-03 03:59:44,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 279 places, 330 transitions, 708 flow [2022-11-03 03:59:45,254 INFO L130 PetriNetUnfolder]: 197/1089 cut-off events. [2022-11-03 03:59:45,255 INFO L131 PetriNetUnfolder]: For 72/86 co-relation queries the response was YES. [2022-11-03 03:59:45,287 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 6481 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. [2022-11-03 03:59:45,372 INFO L118 LiptonReduction]: Number of co-enabled transitions 62928 [2022-11-03 03:59:53,011 INFO L133 LiptonReduction]: Checked pairs total: 127154 [2022-11-03 03:59:53,011 INFO L135 LiptonReduction]: Total number of compositions: 267 [2022-11-03 03:59:53,013 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 100 places, 143 transitions, 334 flow