./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_85-list2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_26fa1b54-5552-4198-9fc3-366c3cb3f3bf/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26fa1b54-5552-4198-9fc3-366c3cb3f3bf/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_26fa1b54-5552-4198-9fc3-366c3cb3f3bf/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26fa1b54-5552-4198-9fc3-366c3cb3f3bf/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_85-list2_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26fa1b54-5552-4198-9fc3-366c3cb3f3bf/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_26fa1b54-5552-4198-9fc3-366c3cb3f3bf/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 da9f6c449f4da806b6a3bb0aaf2c3c9171ea9b71d075f7e8b1d9543f656f7b8b --- 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 20:07:38,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:07:38,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:07:38,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:07:38,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:07:38,539 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:07:38,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:07:38,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:07:38,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:07:38,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:07:38,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:07:38,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:07:38,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:07:38,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:07:38,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:07:38,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:07:38,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:07:38,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:07:38,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:07:38,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:07:38,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:07:38,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:07:38,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:07:38,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:07:38,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:07:38,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:07:38,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:07:38,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:07:38,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:07:38,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:07:38,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:07:38,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:07:38,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:07:38,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:07:38,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:07:38,598 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:07:38,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:07:38,599 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:07:38,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:07:38,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:07:38,601 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:07:38,604 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26fa1b54-5552-4198-9fc3-366c3cb3f3bf/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:07:38,649 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:07:38,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:07:38,650 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:07:38,650 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:07:38,651 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:07:38,652 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:07:38,652 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:07:38,652 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:07:38,652 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:07:38,652 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:07:38,654 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:07:38,654 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:07:38,654 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:07:38,655 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:07:38,655 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:07:38,655 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:07:38,655 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:07:38,656 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:07:38,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:07:38,657 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:07:38,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:07:38,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:07:38,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:07:38,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:07:38,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:07:38,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:07:38,659 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:07:38,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:07:38,659 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:07:38,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:07:38,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:07:38,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:07:38,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:07:38,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:07:38,661 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:07:38,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:07:38,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:07:38,662 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:07:38,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:07:38,662 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:07:38,663 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:07:38,665 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_26fa1b54-5552-4198-9fc3-366c3cb3f3bf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26fa1b54-5552-4198-9fc3-366c3cb3f3bf/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da9f6c449f4da806b6a3bb0aaf2c3c9171ea9b71d075f7e8b1d9543f656f7b8b [2022-11-20 20:07:38,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:07:39,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:07:39,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:07:39,025 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:07:39,026 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:07:39,027 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26fa1b54-5552-4198-9fc3-366c3cb3f3bf/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/goblint-regression/28-race_reach_85-list2_racefree.i [2022-11-20 20:07:42,565 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:07:42,912 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:07:42,912 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26fa1b54-5552-4198-9fc3-366c3cb3f3bf/sv-benchmarks/c/goblint-regression/28-race_reach_85-list2_racefree.i [2022-11-20 20:07:42,932 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26fa1b54-5552-4198-9fc3-366c3cb3f3bf/bin/utaipan-6cKwYrpEi9/data/552fff97e/66674f5a0afe43759234773912855b02/FLAGc6e1f14a0 [2022-11-20 20:07:42,968 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26fa1b54-5552-4198-9fc3-366c3cb3f3bf/bin/utaipan-6cKwYrpEi9/data/552fff97e/66674f5a0afe43759234773912855b02 [2022-11-20 20:07:42,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:07:42,976 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:07:42,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:07:42,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:07:42,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:07:42,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:07:42" (1/1) ... [2022-11-20 20:07:42,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b7e824b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:07:42, skipping insertion in model container [2022-11-20 20:07:42,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:07:42" (1/1) ... [2022-11-20 20:07:42,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:07:43,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:07:43,745 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_26fa1b54-5552-4198-9fc3-366c3cb3f3bf/sv-benchmarks/c/goblint-regression/28-race_reach_85-list2_racefree.i[47038,47051] [2022-11-20 20:07:43,826 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:07:43,850 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:07:43,918 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_26fa1b54-5552-4198-9fc3-366c3cb3f3bf/sv-benchmarks/c/goblint-regression/28-race_reach_85-list2_racefree.i[47038,47051] [2022-11-20 20:07:43,967 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:07:44,078 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:07:44,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:07:44 WrapperNode [2022-11-20 20:07:44,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:07:44,081 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:07:44,082 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:07:44,082 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:07:44,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:07:44" (1/1) ... [2022-11-20 20:07:44,132 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:07:44" (1/1) ... [2022-11-20 20:07:44,199 INFO L138 Inliner]: procedures = 279, calls = 86, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 339 [2022-11-20 20:07:44,201 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:07:44,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:07:44,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:07:44,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:07:44,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:07:44" (1/1) ... [2022-11-20 20:07:44,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:07:44" (1/1) ... [2022-11-20 20:07:44,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:07:44" (1/1) ... [2022-11-20 20:07:44,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:07:44" (1/1) ... [2022-11-20 20:07:44,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:07:44" (1/1) ... [2022-11-20 20:07:44,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:07:44" (1/1) ... [2022-11-20 20:07:44,282 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:07:44" (1/1) ... [2022-11-20 20:07:44,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:07:44" (1/1) ... [2022-11-20 20:07:44,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:07:44,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:07:44,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:07:44,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:07:44,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:07:44" (1/1) ... [2022-11-20 20:07:44,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:07:44,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26fa1b54-5552-4198-9fc3-366c3cb3f3bf/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:07:44,345 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26fa1b54-5552-4198-9fc3-366c3cb3f3bf/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:07:44,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26fa1b54-5552-4198-9fc3-366c3cb3f3bf/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:07:44,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 20:07:44,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 20:07:44,403 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-20 20:07:44,403 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-20 20:07:44,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 20:07:44,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 20:07:44,404 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-20 20:07:44,404 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-20 20:07:44,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 20:07:44,404 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 20:07:44,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 20:07:44,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:07:44,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 20:07:44,405 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2022-11-20 20:07:44,406 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2022-11-20 20:07:44,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:07:44,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:07:44,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:07:44,409 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 20:07:44,630 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:07:44,633 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:07:45,432 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:07:45,447 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:07:45,448 INFO L300 CfgBuilder]: Removed 28 assume(true) statements. [2022-11-20 20:07:45,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:07:45 BoogieIcfgContainer [2022-11-20 20:07:45,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:07:45,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:07:45,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:07:45,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:07:45,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:07:42" (1/3) ... [2022-11-20 20:07:45,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498742af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:07:45, skipping insertion in model container [2022-11-20 20:07:45,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:07:44" (2/3) ... [2022-11-20 20:07:45,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498742af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:07:45, skipping insertion in model container [2022-11-20 20:07:45,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:07:45" (3/3) ... [2022-11-20 20:07:45,463 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_85-list2_racefree.i [2022-11-20 20:07:45,476 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 20:07:45,490 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:07:45,490 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 20:07:45,490 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 20:07:45,666 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2022-11-20 20:07:45,718 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 20:07:45,738 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 325 places, 363 transitions, 768 flow [2022-11-20 20:07:45,742 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 325 places, 363 transitions, 768 flow [2022-11-20 20:07:45,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 363 transitions, 768 flow [2022-11-20 20:07:46,342 INFO L130 PetriNetUnfolder]: 164/1099 cut-off events. [2022-11-20 20:07:46,343 INFO L131 PetriNetUnfolder]: For 36/65 co-relation queries the response was YES. [2022-11-20 20:07:46,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1160 conditions, 1099 events. 164/1099 cut-off events. For 36/65 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 6886 event pairs, 0 based on Foata normal form. 0/919 useless extension candidates. Maximal degree in co-relation 572. Up to 16 conditions per place. [2022-11-20 20:07:46,444 INFO L119 LiptonReduction]: Number of co-enabled transitions 54600 [2022-11-20 20:09:04,378 WARN L233 SmtUtils]: Spent 6.72s on a formula simplification. DAG size of input: 243 DAG size of output: 241 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-20 20:09:06,259 INFO L134 LiptonReduction]: Checked pairs total: 104562 [2022-11-20 20:09:06,259 INFO L136 LiptonReduction]: Total number of compositions: 302 [2022-11-20 20:09:06,269 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 86 places, 115 transitions, 272 flow [2022-11-20 20:09:10,622 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 71125 states, 71089 states have (on average 4.713274908916992) internal successors, (335062), 71124 states have internal predecessors, (335062), 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 20:09:10,653 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:09:10,658 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;@711d10c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:09:10,658 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-20 20:09:10,992 INFO L276 IsEmpty]: Start isEmpty. Operand has 71125 states, 71089 states have (on average 4.713274908916992) internal successors, (335062), 71124 states have internal predecessors, (335062), 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 20:09:10,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 20:09:10,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:09:11,000 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-20 20:09:11,001 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:09:11,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:09:11,007 INFO L85 PathProgramCache]: Analyzing trace with hash -466005142, now seen corresponding path program 1 times [2022-11-20 20:09:11,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:09:11,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190692646] [2022-11-20 20:09:11,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:09:11,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:09:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 20:09:11,315 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 20:09:11,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 20:09:11,448 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-20 20:09:11,453 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 20:09:11,454 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2022-11-20 20:09:11,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-11-20 20:09:11,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2022-11-20 20:09:11,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2022-11-20 20:09:11,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2022-11-20 20:09:11,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-11-20 20:09:11,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-11-20 20:09:11,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:09:11,464 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-20 20:09:11,469 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 20:09:11,469 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-20 20:09:11,610 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-11-20 20:09:11,627 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 20:09:11,629 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 514 places, 585 transitions, 1260 flow [2022-11-20 20:09:11,630 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 514 places, 585 transitions, 1260 flow [2022-11-20 20:09:11,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 514 places, 585 transitions, 1260 flow [2022-11-20 20:09:15,057 INFO L130 PetriNetUnfolder]: 1130/5606 cut-off events. [2022-11-20 20:09:15,058 INFO L131 PetriNetUnfolder]: For 602/779 co-relation queries the response was YES. [2022-11-20 20:09:15,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6280 conditions, 5606 events. 1130/5606 cut-off events. For 602/779 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 51438 event pairs, 22 based on Foata normal form. 0/4727 useless extension candidates. Maximal degree in co-relation 3512. Up to 192 conditions per place. [2022-11-20 20:09:15,934 INFO L119 LiptonReduction]: Number of co-enabled transitions 205980 [2022-11-20 20:10:18,055 WARN L233 SmtUtils]: Spent 7.26s on a formula simplification. DAG size of input: 247 DAG size of output: 245 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-20 20:10:21,360 INFO L134 LiptonReduction]: Checked pairs total: 434276 [2022-11-20 20:10:21,361 INFO L136 LiptonReduction]: Total number of compositions: 487 [2022-11-20 20:10:21,363 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 145 places, 203 transitions, 496 flow