./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8393723b 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_d452b6d0-415d-4ee7-8ca1-6bc7ce844afe/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452b6d0-415d-4ee7-8ca1-6bc7ce844afe/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452b6d0-415d-4ee7-8ca1-6bc7ce844afe/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452b6d0-415d-4ee7-8ca1-6bc7ce844afe/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452b6d0-415d-4ee7-8ca1-6bc7ce844afe/bin/utaipan-I9t0OCRTmS/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452b6d0-415d-4ee7-8ca1-6bc7ce844afe/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 --- 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-8393723 [2022-11-19 06:38:20,327 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:38:20,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:38:20,374 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:38:20,375 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:38:20,381 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:38:20,382 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:38:20,384 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:38:20,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:38:20,387 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:38:20,388 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:38:20,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:38:20,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:38:20,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:38:20,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:38:20,405 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:38:20,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:38:20,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:38:20,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:38:20,421 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:38:20,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:38:20,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:38:20,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:38:20,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:38:20,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:38:20,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:38:20,435 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:38:20,436 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:38:20,437 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:38:20,438 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:38:20,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:38:20,442 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:38:20,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:38:20,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:38:20,447 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:38:20,447 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:38:20,448 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:38:20,448 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:38:20,449 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:38:20,450 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:38:20,451 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:38:20,452 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452b6d0-415d-4ee7-8ca1-6bc7ce844afe/bin/utaipan-I9t0OCRTmS/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-19 06:38:20,503 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:38:20,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:38:20,510 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:38:20,510 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:38:20,511 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:38:20,511 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:38:20,512 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:38:20,512 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:38:20,512 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:38:20,512 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:38:20,514 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:38:20,514 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:38:20,514 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:38:20,515 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:38:20,515 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:38:20,515 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:38:20,515 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:38:20,516 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:38:20,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:38:20,517 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:38:20,517 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 06:38:20,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:38:20,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:38:20,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:38:20,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:38:20,520 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:38:20,520 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:38:20,521 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-19 06:38:20,521 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:38:20,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:38:20,521 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:38:20,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:38:20,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:38:20,523 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:38:20,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:38:20,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:38:20,523 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:38:20,524 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:38:20,524 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:38:20,524 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:38:20,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:38:20,525 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:38:20,525 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:38:20,525 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_d452b6d0-415d-4ee7-8ca1-6bc7ce844afe/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452b6d0-415d-4ee7-8ca1-6bc7ce844afe/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 [2022-11-19 06:38:20,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:38:20,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:38:20,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:38:20,931 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:38:20,932 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:38:20,934 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452b6d0-415d-4ee7-8ca1-6bc7ce844afe/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i [2022-11-19 06:38:21,024 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452b6d0-415d-4ee7-8ca1-6bc7ce844afe/bin/utaipan-I9t0OCRTmS/data/2c8c5a389/de0556f2bbbd46209eb9c1d2ec227d93/FLAG432a994b4 [2022-11-19 06:38:21,693 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:38:21,693 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452b6d0-415d-4ee7-8ca1-6bc7ce844afe/sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i [2022-11-19 06:38:21,711 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452b6d0-415d-4ee7-8ca1-6bc7ce844afe/bin/utaipan-I9t0OCRTmS/data/2c8c5a389/de0556f2bbbd46209eb9c1d2ec227d93/FLAG432a994b4 [2022-11-19 06:38:21,968 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452b6d0-415d-4ee7-8ca1-6bc7ce844afe/bin/utaipan-I9t0OCRTmS/data/2c8c5a389/de0556f2bbbd46209eb9c1d2ec227d93 [2022-11-19 06:38:21,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:38:21,973 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:38:21,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:38:21,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:38:21,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:38:21,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:38:21" (1/1) ... [2022-11-19 06:38:21,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6699bfe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:21, skipping insertion in model container [2022-11-19 06:38:21,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:38:21" (1/1) ... [2022-11-19 06:38:22,003 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:38:22,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:38:22,604 WARN L234 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_d452b6d0-415d-4ee7-8ca1-6bc7ce844afe/sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i[30176,30189] [2022-11-19 06:38:22,654 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:38:22,676 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:38:22,726 WARN L234 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_d452b6d0-415d-4ee7-8ca1-6bc7ce844afe/sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i[30176,30189] [2022-11-19 06:38:22,746 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:38:22,816 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:38:22,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:22 WrapperNode [2022-11-19 06:38:22,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:38:22,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:38:22,818 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:38:22,818 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:38:22,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:22" (1/1) ... [2022-11-19 06:38:22,861 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:22" (1/1) ... [2022-11-19 06:38:22,893 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 94 [2022-11-19 06:38:22,894 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:38:22,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:38:22,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:38:22,895 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:38:22,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:22" (1/1) ... [2022-11-19 06:38:22,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:22" (1/1) ... [2022-11-19 06:38:22,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:22" (1/1) ... [2022-11-19 06:38:22,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:22" (1/1) ... [2022-11-19 06:38:22,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:22" (1/1) ... [2022-11-19 06:38:22,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:22" (1/1) ... [2022-11-19 06:38:22,944 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:22" (1/1) ... [2022-11-19 06:38:22,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:22" (1/1) ... [2022-11-19 06:38:22,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:38:22,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:38:22,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:38:22,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:38:22,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:22" (1/1) ... [2022-11-19 06:38:22,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:38:22,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452b6d0-415d-4ee7-8ca1-6bc7ce844afe/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:38:22,990 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452b6d0-415d-4ee7-8ca1-6bc7ce844afe/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:38:22,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452b6d0-415d-4ee7-8ca1-6bc7ce844afe/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:38:23,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 06:38:23,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 06:38:23,037 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-19 06:38:23,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:38:23,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:38:23,038 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-19 06:38:23,038 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-19 06:38:23,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:38:23,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:38:23,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:38:23,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:38:23,040 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-19 06:38:23,212 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:38:23,215 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:38:23,788 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:38:23,798 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:38:23,804 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-19 06:38:23,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:38:23 BoogieIcfgContainer [2022-11-19 06:38:23,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:38:23,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:38:23,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:38:23,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:38:23,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:38:21" (1/3) ... [2022-11-19 06:38:23,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc56f41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:38:23, skipping insertion in model container [2022-11-19 06:38:23,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:22" (2/3) ... [2022-11-19 06:38:23,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc56f41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:38:23, skipping insertion in model container [2022-11-19 06:38:23,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:38:23" (3/3) ... [2022-11-19 06:38:23,822 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_12-ptr_racefree.i [2022-11-19 06:38:23,834 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-19 06:38:23,848 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:38:23,849 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-19 06:38:23,849 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-19 06:38:24,058 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-19 06:38:24,126 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 06:38:24,149 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 153 places, 162 transitions, 332 flow [2022-11-19 06:38:24,162 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 153 places, 162 transitions, 332 flow [2022-11-19 06:38:24,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 162 transitions, 332 flow [2022-11-19 06:38:24,348 INFO L130 PetriNetUnfolder]: 17/211 cut-off events. [2022-11-19 06:38:24,348 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-19 06:38:24,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 211 events. 17/211 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 619 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 115. Up to 4 conditions per place. [2022-11-19 06:38:24,367 INFO L119 LiptonReduction]: Number of co-enabled transitions 6710 [2022-11-19 06:38:31,614 INFO L134 LiptonReduction]: Checked pairs total: 49534 [2022-11-19 06:38:31,615 INFO L136 LiptonReduction]: Total number of compositions: 142 [2022-11-19 06:38:31,625 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 67 transitions, 142 flow [2022-11-19 06:38:31,694 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 804 states, 777 states have (on average 2.236808236808237) internal successors, (1738), 803 states have internal predecessors, (1738), 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) [2022-11-19 06:38:31,727 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:38:31,736 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;@c52efef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:38:31,737 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-19 06:38:31,744 INFO L276 IsEmpty]: Start isEmpty. Operand has 804 states, 777 states have (on average 2.236808236808237) internal successors, (1738), 803 states have internal predecessors, (1738), 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) [2022-11-19 06:38:31,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 06:38:31,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:31,754 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-19 06:38:31,756 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-19 06:38:31,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:31,765 INFO L85 PathProgramCache]: Analyzing trace with hash 294723559, now seen corresponding path program 1 times [2022-11-19 06:38:31,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:31,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830342801] [2022-11-19 06:38:31,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:31,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:31,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:38:31,938 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 06:38:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:38:32,036 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 06:38:32,038 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 06:38:32,040 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-19 06:38:32,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-11-19 06:38:32,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-11-19 06:38:32,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-11-19 06:38:32,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-11-19 06:38:32,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-11-19 06:38:32,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-11-19 06:38:32,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-11-19 06:38:32,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-11-19 06:38:32,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-11-19 06:38:32,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-11-19 06:38:32,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:38:32,052 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-19 06:38:32,057 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-19 06:38:32,057 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-19 06:38:32,130 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-19 06:38:32,142 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 06:38:32,142 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 211 places, 225 transitions, 468 flow [2022-11-19 06:38:32,143 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 211 places, 225 transitions, 468 flow [2022-11-19 06:38:32,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 225 transitions, 468 flow [2022-11-19 06:38:32,314 INFO L130 PetriNetUnfolder]: 31/354 cut-off events. [2022-11-19 06:38:32,314 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-19 06:38:32,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 354 events. 31/354 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1352 event pairs, 0 based on Foata normal form. 0/304 useless extension candidates. Maximal degree in co-relation 213. Up to 8 conditions per place. [2022-11-19 06:38:32,342 INFO L119 LiptonReduction]: Number of co-enabled transitions 22204 [2022-11-19 06:38:40,336 INFO L134 LiptonReduction]: Checked pairs total: 205514 [2022-11-19 06:38:40,336 INFO L136 LiptonReduction]: Total number of compositions: 188 [2022-11-19 06:38:40,340 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 103 places, 114 transitions, 246 flow [2022-11-19 06:38:41,880 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 32423 states, 32271 states have (on average 3.289485916147625) internal successors, (106155), 32422 states have internal predecessors, (106155), 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) [2022-11-19 06:38:41,881 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:38:41,883 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;@c52efef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:38:41,883 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-19 06:38:42,103 INFO L276 IsEmpty]: Start isEmpty. Operand has 32423 states, 32271 states have (on average 3.289485916147625) internal successors, (106155), 32422 states have internal predecessors, (106155), 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) [2022-11-19 06:38:42,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 06:38:42,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:42,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:38:42,108 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-19 06:38:42,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:42,109 INFO L85 PathProgramCache]: Analyzing trace with hash -780845793, now seen corresponding path program 1 times [2022-11-19 06:38:42,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:42,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712430079] [2022-11-19 06:38:42,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:42,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:42,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:42,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:42,259 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:42,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712430079] [2022-11-19 06:38:42,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712430079] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:38:42,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:38:42,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:38:42,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349185533] [2022-11-19 06:38:42,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:38:42,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:38:42,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:38:42,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:38:42,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:38:42,385 INFO L87 Difference]: Start difference. First operand has 32423 states, 32271 states have (on average 3.289485916147625) internal successors, (106155), 32422 states have internal predecessors, (106155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-19 06:38:43,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:43,666 INFO L93 Difference]: Finished difference Result 32413 states and 92894 transitions. [2022-11-19 06:38:43,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:38:43,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-19 06:38:43,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:44,128 INFO L225 Difference]: With dead ends: 32413 [2022-11-19 06:38:44,128 INFO L226 Difference]: Without dead ends: 32397 [2022-11-19 06:38:44,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:38:44,133 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 38 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:44,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 122 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:38:44,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32397 states. [2022-11-19 06:38:45,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32397 to 32397. [2022-11-19 06:38:45,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32397 states, 32250 states have (on average 2.8791937984496125) internal successors, (92854), 32396 states have internal predecessors, (92854), 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) [2022-11-19 06:38:46,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32397 states to 32397 states and 92854 transitions. [2022-11-19 06:38:46,065 INFO L78 Accepts]: Start accepts. Automaton has 32397 states and 92854 transitions. Word has length 9 [2022-11-19 06:38:46,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:46,065 INFO L495 AbstractCegarLoop]: Abstraction has 32397 states and 92854 transitions. [2022-11-19 06:38:46,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-19 06:38:46,066 INFO L276 IsEmpty]: Start isEmpty. Operand 32397 states and 92854 transitions. [2022-11-19 06:38:46,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 06:38:46,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:46,068 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-19 06:38:46,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:38:46,069 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-19 06:38:46,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:46,071 INFO L85 PathProgramCache]: Analyzing trace with hash 131928900, now seen corresponding path program 1 times [2022-11-19 06:38:46,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:46,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067190380] [2022-11-19 06:38:46,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:46,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:38:46,103 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 06:38:46,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:38:46,131 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 06:38:46,131 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 06:38:46,132 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-11-19 06:38:46,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2022-11-19 06:38:46,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2022-11-19 06:38:46,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2022-11-19 06:38:46,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2022-11-19 06:38:46,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2022-11-19 06:38:46,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2022-11-19 06:38:46,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2022-11-19 06:38:46,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2022-11-19 06:38:46,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2022-11-19 06:38:46,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2022-11-19 06:38:46,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2022-11-19 06:38:46,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2022-11-19 06:38:46,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2022-11-19 06:38:46,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2022-11-19 06:38:46,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:38:46,139 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-19 06:38:46,139 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-19 06:38:46,139 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-19 06:38:46,191 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-19 06:38:46,196 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 06:38:46,197 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 269 places, 288 transitions, 606 flow [2022-11-19 06:38:46,197 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 269 places, 288 transitions, 606 flow [2022-11-19 06:38:46,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 269 places, 288 transitions, 606 flow [2022-11-19 06:38:46,489 INFO L130 PetriNetUnfolder]: 50/542 cut-off events. [2022-11-19 06:38:46,489 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-19 06:38:46,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570 conditions, 542 events. 50/542 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2314 event pairs, 1 based on Foata normal form. 0/464 useless extension candidates. Maximal degree in co-relation 362. Up to 16 conditions per place. [2022-11-19 06:38:46,536 INFO L119 LiptonReduction]: Number of co-enabled transitions 45018 [2022-11-19 06:38:59,274 INFO L134 LiptonReduction]: Checked pairs total: 474754 [2022-11-19 06:38:59,275 INFO L136 LiptonReduction]: Total number of compositions: 241 [2022-11-19 06:38:59,277 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 141 places, 157 transitions, 344 flow