./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1328bb6a-5221-4055-aeb8-a788d6202c11/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1328bb6a-5221-4055-aeb8-a788d6202c11/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1328bb6a-5221-4055-aeb8-a788d6202c11/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1328bb6a-5221-4055-aeb8-a788d6202c11/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1328bb6a-5221-4055-aeb8-a788d6202c11/bin/utaipan-gh47qXpMRh/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1328bb6a-5221-4055-aeb8-a788d6202c11/bin/utaipan-gh47qXpMRh --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 ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 07:45:13,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 07:45:13,679 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 07:45:13,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 07:45:13,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 07:45:13,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 07:45:13,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 07:45:13,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 07:45:13,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 07:45:13,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 07:45:13,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 07:45:13,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 07:45:13,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 07:45:13,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 07:45:13,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 07:45:13,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 07:45:13,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 07:45:13,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 07:45:13,713 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 07:45:13,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 07:45:13,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 07:45:13,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 07:45:13,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 07:45:13,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 07:45:13,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 07:45:13,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 07:45:13,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 07:45:13,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 07:45:13,725 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 07:45:13,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 07:45:13,726 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 07:45:13,727 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 07:45:13,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 07:45:13,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 07:45:13,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 07:45:13,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 07:45:13,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 07:45:13,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 07:45:13,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 07:45:13,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 07:45:13,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 07:45:13,733 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1328bb6a-5221-4055-aeb8-a788d6202c11/bin/utaipan-gh47qXpMRh/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-12-14 07:45:13,754 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 07:45:13,754 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 07:45:13,755 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 07:45:13,755 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 07:45:13,756 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 07:45:13,756 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 07:45:13,756 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 07:45:13,756 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 07:45:13,756 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 07:45:13,757 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 07:45:13,757 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 07:45:13,757 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 07:45:13,757 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 07:45:13,757 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 07:45:13,758 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 07:45:13,758 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 07:45:13,758 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 07:45:13,758 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 07:45:13,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 07:45:13,759 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 07:45:13,759 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 07:45:13,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 07:45:13,760 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 07:45:13,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 07:45:13,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 07:45:13,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 07:45:13,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 07:45:13,761 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-14 07:45:13,761 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 07:45:13,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 07:45:13,761 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 07:45:13,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 07:45:13,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 07:45:13,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 07:45:13,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:45:13,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 07:45:13,762 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 07:45:13,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 07:45:13,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 07:45:13,763 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 07:45:13,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 07:45:13,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 07:45:13,763 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 07:45:13,764 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_1328bb6a-5221-4055-aeb8-a788d6202c11/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1328bb6a-5221-4055-aeb8-a788d6202c11/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 [2022-12-14 07:45:13,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 07:45:13,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 07:45:13,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 07:45:13,974 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 07:45:13,974 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 07:45:13,975 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1328bb6a-5221-4055-aeb8-a788d6202c11/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i [2022-12-14 07:45:16,617 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 07:45:16,816 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 07:45:16,816 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1328bb6a-5221-4055-aeb8-a788d6202c11/sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i [2022-12-14 07:45:16,827 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1328bb6a-5221-4055-aeb8-a788d6202c11/bin/utaipan-gh47qXpMRh/data/b59e687c2/1ee14cbb0e7f48bea6673270ecb8f316/FLAGdc8a058dd [2022-12-14 07:45:16,840 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1328bb6a-5221-4055-aeb8-a788d6202c11/bin/utaipan-gh47qXpMRh/data/b59e687c2/1ee14cbb0e7f48bea6673270ecb8f316 [2022-12-14 07:45:16,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 07:45:16,844 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 07:45:16,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 07:45:16,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 07:45:16,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 07:45:16,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:45:16" (1/1) ... [2022-12-14 07:45:16,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a3fa656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:45:16, skipping insertion in model container [2022-12-14 07:45:16,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:45:16" (1/1) ... [2022-12-14 07:45:16,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 07:45:16,883 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:45:17,068 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_1328bb6a-5221-4055-aeb8-a788d6202c11/sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i[30176,30189] [2022-12-14 07:45:17,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:45:17,095 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 07:45:17,119 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_1328bb6a-5221-4055-aeb8-a788d6202c11/sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i[30176,30189] [2022-12-14 07:45:17,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:45:17,149 INFO L208 MainTranslator]: Completed translation [2022-12-14 07:45:17,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:45:17 WrapperNode [2022-12-14 07:45:17,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 07:45:17,150 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 07:45:17,150 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 07:45:17,150 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 07:45:17,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:45:17" (1/1) ... [2022-12-14 07:45:17,165 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:45:17" (1/1) ... [2022-12-14 07:45:17,182 INFO L138 Inliner]: procedures = 170, calls = 34, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 176 [2022-12-14 07:45:17,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 07:45:17,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 07:45:17,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 07:45:17,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 07:45:17,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:45:17" (1/1) ... [2022-12-14 07:45:17,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:45:17" (1/1) ... [2022-12-14 07:45:17,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:45:17" (1/1) ... [2022-12-14 07:45:17,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:45:17" (1/1) ... [2022-12-14 07:45:17,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:45:17" (1/1) ... [2022-12-14 07:45:17,201 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:45:17" (1/1) ... [2022-12-14 07:45:17,202 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:45:17" (1/1) ... [2022-12-14 07:45:17,203 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:45:17" (1/1) ... [2022-12-14 07:45:17,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 07:45:17,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 07:45:17,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 07:45:17,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 07:45:17,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:45:17" (1/1) ... [2022-12-14 07:45:17,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:45:17,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1328bb6a-5221-4055-aeb8-a788d6202c11/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:45:17,229 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1328bb6a-5221-4055-aeb8-a788d6202c11/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 07:45:17,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1328bb6a-5221-4055-aeb8-a788d6202c11/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 07:45:17,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 07:45:17,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 07:45:17,261 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-14 07:45:17,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 07:45:17,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 07:45:17,261 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-14 07:45:17,261 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-14 07:45:17,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 07:45:17,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 07:45:17,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 07:45:17,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 07:45:17,263 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 07:45:17,359 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 07:45:17,361 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 07:45:17,599 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 07:45:17,605 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 07:45:17,606 INFO L300 CfgBuilder]: Removed 18 assume(true) statements. [2022-12-14 07:45:17,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:45:17 BoogieIcfgContainer [2022-12-14 07:45:17,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 07:45:17,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 07:45:17,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 07:45:17,612 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 07:45:17,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:45:16" (1/3) ... [2022-12-14 07:45:17,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a515fe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:45:17, skipping insertion in model container [2022-12-14 07:45:17,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:45:17" (2/3) ... [2022-12-14 07:45:17,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a515fe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:45:17, skipping insertion in model container [2022-12-14 07:45:17,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:45:17" (3/3) ... [2022-12-14 07:45:17,614 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_60-invariant_racefree.i [2022-12-14 07:45:17,620 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 07:45:17,628 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 07:45:17,629 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-12-14 07:45:17,629 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 07:45:17,676 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-14 07:45:17,704 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 07:45:17,719 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 172 places, 191 transitions, 390 flow [2022-12-14 07:45:17,722 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 172 places, 191 transitions, 390 flow [2022-12-14 07:45:17,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 191 transitions, 390 flow [2022-12-14 07:45:17,811 INFO L130 PetriNetUnfolder]: 33/273 cut-off events. [2022-12-14 07:45:17,811 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-14 07:45:17,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 273 events. 33/273 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1139 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 155. Up to 6 conditions per place. [2022-12-14 07:45:17,831 INFO L119 LiptonReduction]: Number of co-enabled transitions 11968 [2022-12-14 07:45:20,694 INFO L134 LiptonReduction]: Checked pairs total: 59323 [2022-12-14 07:45:20,694 INFO L136 LiptonReduction]: Total number of compositions: 161 [2022-12-14 07:45:20,700 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 77 places, 93 transitions, 194 flow [2022-12-14 07:45:20,751 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1368 states, 1299 states have (on average 2.535796766743649) internal successors, (3294), 1367 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:45:20,764 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:45:20,769 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;@5b5b0f6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:45:20,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-12-14 07:45:20,773 INFO L276 IsEmpty]: Start isEmpty. Operand has 1368 states, 1299 states have (on average 2.535796766743649) internal successors, (3294), 1367 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:45:20,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 07:45:20,777 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:45:20,777 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 07:45:20,778 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-12-14 07:45:20,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:45:20,781 INFO L85 PathProgramCache]: Analyzing trace with hash 681727178, now seen corresponding path program 1 times [2022-12-14 07:45:20,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:45:20,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760268273] [2022-12-14 07:45:20,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:45:20,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:45:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:45:20,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:45:20,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:45:20,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760268273] [2022-12-14 07:45:20,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760268273] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:45:20,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:45:20,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:45:20,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927841342] [2022-12-14 07:45:20,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:45:20,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:45:20,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:45:20,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:45:20,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:45:20,978 INFO L87 Difference]: Start difference. First operand has 1368 states, 1299 states have (on average 2.535796766743649) internal successors, (3294), 1367 states have internal predecessors, (3294), 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 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:45:21,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:45:21,092 INFO L93 Difference]: Finished difference Result 1302 states and 2562 transitions. [2022-12-14 07:45:21,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:45:21,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2022-12-14 07:45:21,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:45:21,110 INFO L225 Difference]: With dead ends: 1302 [2022-12-14 07:45:21,111 INFO L226 Difference]: Without dead ends: 1263 [2022-12-14 07:45:21,111 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 [2022-12-14 07:45:21,113 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 38 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:45:21,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 76 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:45:21,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2022-12-14 07:45:21,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1263. [2022-12-14 07:45:21,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1263 states, 1209 states have (on average 2.0521091811414394) internal successors, (2481), 1262 states have internal predecessors, (2481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:45:21,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 2481 transitions. [2022-12-14 07:45:21,178 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 2481 transitions. Word has length 5 [2022-12-14 07:45:21,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:45:21,179 INFO L495 AbstractCegarLoop]: Abstraction has 1263 states and 2481 transitions. [2022-12-14 07:45:21,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:45:21,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 2481 transitions. [2022-12-14 07:45:21,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 07:45:21,179 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:45:21,179 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-12-14 07:45:21,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 07:45:21,180 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-12-14 07:45:21,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:45:21,180 INFO L85 PathProgramCache]: Analyzing trace with hash -343663033, now seen corresponding path program 1 times [2022-12-14 07:45:21,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:45:21,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526030809] [2022-12-14 07:45:21,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:45:21,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:45:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:45:21,201 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 07:45:21,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:45:21,226 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 07:45:21,226 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 07:45:21,227 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-12-14 07:45:21,229 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2022-12-14 07:45:21,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2022-12-14 07:45:21,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2022-12-14 07:45:21,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2022-12-14 07:45:21,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2022-12-14 07:45:21,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2022-12-14 07:45:21,230 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2022-12-14 07:45:21,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2022-12-14 07:45:21,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2022-12-14 07:45:21,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2022-12-14 07:45:21,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2022-12-14 07:45:21,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2022-12-14 07:45:21,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2022-12-14 07:45:21,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2022-12-14 07:45:21,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2022-12-14 07:45:21,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2022-12-14 07:45:21,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2022-12-14 07:45:21,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2022-12-14 07:45:21,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 07:45:21,234 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 07:45:21,235 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 07:45:21,235 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-14 07:45:21,258 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-14 07:45:21,260 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 07:45:21,260 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 233 places, 261 transitions, 540 flow [2022-12-14 07:45:21,261 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 233 places, 261 transitions, 540 flow [2022-12-14 07:45:21,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 261 transitions, 540 flow [2022-12-14 07:45:21,316 INFO L130 PetriNetUnfolder]: 57/456 cut-off events. [2022-12-14 07:45:21,316 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-14 07:45:21,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470 conditions, 456 events. 57/456 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2140 event pairs, 0 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 275. Up to 9 conditions per place. [2022-12-14 07:45:21,331 INFO L119 LiptonReduction]: Number of co-enabled transitions 34680 [2022-12-14 07:45:24,449 INFO L134 LiptonReduction]: Checked pairs total: 186296 [2022-12-14 07:45:24,449 INFO L136 LiptonReduction]: Total number of compositions: 211 [2022-12-14 07:45:24,450 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 117 places, 140 transitions, 298 flow [2022-12-14 07:45:25,326 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 50905 states, 50395 states have (on average 3.6248635777358866) internal successors, (182675), 50904 states have internal predecessors, (182675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:45:25,327 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:45:25,328 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;@5b5b0f6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:45:25,328 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-12-14 07:45:25,393 INFO L276 IsEmpty]: Start isEmpty. Operand has 50905 states, 50395 states have (on average 3.6248635777358866) internal successors, (182675), 50904 states have internal predecessors, (182675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:45:25,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 07:45:25,393 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:45:25,394 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 07:45:25,394 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-12-14 07:45:25,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:45:25,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1200035854, now seen corresponding path program 1 times [2022-12-14 07:45:25,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:45:25,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559387863] [2022-12-14 07:45:25,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:45:25,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:45:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:45:25,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:45:25,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:45:25,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559387863] [2022-12-14 07:45:25,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559387863] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:45:25,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:45:25,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:45:25,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121633372] [2022-12-14 07:45:25,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:45:25,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:45:25,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:45:25,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:45:25,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:45:25,517 INFO L87 Difference]: Start difference. First operand has 50905 states, 50395 states have (on average 3.6248635777358866) internal successors, (182675), 50904 states have internal predecessors, (182675), 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 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:45:26,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:45:26,103 INFO L93 Difference]: Finished difference Result 49507 states and 145700 transitions. [2022-12-14 07:45:26,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:45:26,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2022-12-14 07:45:26,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:45:26,320 INFO L225 Difference]: With dead ends: 49507 [2022-12-14 07:45:26,320 INFO L226 Difference]: Without dead ends: 49209 [2022-12-14 07:45:26,320 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 [2022-12-14 07:45:26,321 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 39 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:45:26,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 126 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:45:26,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49209 states. [2022-12-14 07:45:27,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49209 to 49209. [2022-12-14 07:45:27,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49209 states, 48772 states have (on average 2.9689165914869187) internal successors, (144800), 49208 states have internal predecessors, (144800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:45:27,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49209 states to 49209 states and 144800 transitions. [2022-12-14 07:45:27,503 INFO L78 Accepts]: Start accepts. Automaton has 49209 states and 144800 transitions. Word has length 5 [2022-12-14 07:45:27,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:45:27,503 INFO L495 AbstractCegarLoop]: Abstraction has 49209 states and 144800 transitions. [2022-12-14 07:45:27,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:45:27,503 INFO L276 IsEmpty]: Start isEmpty. Operand 49209 states and 144800 transitions. [2022-12-14 07:45:27,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 07:45:27,504 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:45:27,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 07:45:27,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 07:45:27,504 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-12-14 07:45:27,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:45:27,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1429061971, now seen corresponding path program 1 times [2022-12-14 07:45:27,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:45:27,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870169900] [2022-12-14 07:45:27,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:45:27,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:45:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:45:27,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:45:27,529 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:45:27,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870169900] [2022-12-14 07:45:27,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870169900] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:45:27,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:45:27,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:45:27,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954185229] [2022-12-14 07:45:27,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:45:27,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:45:27,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:45:27,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:45:27,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:45:27,531 INFO L87 Difference]: Start difference. First operand 49209 states and 144800 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:45:28,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:45:28,171 INFO L93 Difference]: Finished difference Result 71936 states and 202535 transitions. [2022-12-14 07:45:28,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:45:28,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 07:45:28,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:45:28,460 INFO L225 Difference]: With dead ends: 71936 [2022-12-14 07:45:28,460 INFO L226 Difference]: Without dead ends: 70821 [2022-12-14 07:45:28,461 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 [2022-12-14 07:45:28,461 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 85 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:45:28,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 93 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:45:28,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70821 states. [2022-12-14 07:45:29,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70821 to 51774. [2022-12-14 07:45:29,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51774 states, 51413 states have (on average 2.8661039036819482) internal successors, (147355), 51773 states have internal predecessors, (147355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:45:29,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51774 states to 51774 states and 147355 transitions. [2022-12-14 07:45:29,824 INFO L78 Accepts]: Start accepts. Automaton has 51774 states and 147355 transitions. Word has length 6 [2022-12-14 07:45:29,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:45:29,824 INFO L495 AbstractCegarLoop]: Abstraction has 51774 states and 147355 transitions. [2022-12-14 07:45:29,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:45:29,824 INFO L276 IsEmpty]: Start isEmpty. Operand 51774 states and 147355 transitions. [2022-12-14 07:45:29,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 07:45:29,825 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:45:29,825 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-14 07:45:29,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 07:45:29,826 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-12-14 07:45:29,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:45:29,826 INFO L85 PathProgramCache]: Analyzing trace with hash -790500227, now seen corresponding path program 1 times [2022-12-14 07:45:29,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:45:29,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234647907] [2022-12-14 07:45:29,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:45:29,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:45:29,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:45:29,839 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 07:45:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:45:29,850 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 07:45:29,850 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 07:45:29,850 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-12-14 07:45:29,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2022-12-14 07:45:29,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2022-12-14 07:45:29,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2022-12-14 07:45:29,851 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2022-12-14 07:45:29,851 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2022-12-14 07:45:29,851 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2022-12-14 07:45:29,851 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2022-12-14 07:45:29,851 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2022-12-14 07:45:29,851 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2022-12-14 07:45:29,851 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2022-12-14 07:45:29,851 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2022-12-14 07:45:29,851 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2022-12-14 07:45:29,851 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2022-12-14 07:45:29,852 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2022-12-14 07:45:29,852 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2022-12-14 07:45:29,852 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2022-12-14 07:45:29,852 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2022-12-14 07:45:29,852 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2022-12-14 07:45:29,852 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2022-12-14 07:45:29,852 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2022-12-14 07:45:29,852 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2022-12-14 07:45:29,852 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2022-12-14 07:45:29,852 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2022-12-14 07:45:29,852 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2022-12-14 07:45:29,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 07:45:29,853 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-14 07:45:29,853 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 07:45:29,853 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-14 07:45:29,932 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-14 07:45:29,935 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 07:45:29,935 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 294 places, 331 transitions, 692 flow [2022-12-14 07:45:29,936 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 294 places, 331 transitions, 692 flow [2022-12-14 07:45:29,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 331 transitions, 692 flow [2022-12-14 07:45:30,027 INFO L130 PetriNetUnfolder]: 86/684 cut-off events. [2022-12-14 07:45:30,027 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-14 07:45:30,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 712 conditions, 684 events. 86/684 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3352 event pairs, 1 based on Foata normal form. 0/548 useless extension candidates. Maximal degree in co-relation 464. Up to 16 conditions per place. [2022-12-14 07:45:30,053 INFO L119 LiptonReduction]: Number of co-enabled transitions 66504 [2022-12-14 07:45:34,075 INFO L134 LiptonReduction]: Checked pairs total: 377195 [2022-12-14 07:45:34,075 INFO L136 LiptonReduction]: Total number of compositions: 263 [2022-12-14 07:45:34,076 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 155 places, 186 transitions, 402 flow [2022-12-14 07:46:14,212 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1840897 states, 1837188 states have (on average 4.813956982083488) internal successors, (8844144), 1840896 states have internal predecessors, (8844144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:46:14,214 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:46:14,215 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;@5b5b0f6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:46:14,215 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-12-14 07:46:17,002 INFO L276 IsEmpty]: Start isEmpty. Operand has 1840897 states, 1837188 states have (on average 4.813956982083488) internal successors, (8844144), 1840896 states have internal predecessors, (8844144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:46:17,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 07:46:17,002 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:46:17,002 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 07:46:17,003 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-12-14 07:46:17,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:46:17,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1818144235, now seen corresponding path program 1 times [2022-12-14 07:46:17,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:46:17,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931903605] [2022-12-14 07:46:17,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:46:17,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:46:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:46:17,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:46:17,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:46:17,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931903605] [2022-12-14 07:46:17,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931903605] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:46:17,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:46:17,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:46:17,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364480237] [2022-12-14 07:46:17,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:46:17,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:46:17,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:46:17,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:46:17,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:46:22,786 INFO L87 Difference]: Start difference. First operand has 1840897 states, 1837188 states have (on average 4.813956982083488) internal successors, (8844144), 1840896 states have internal predecessors, (8844144), 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 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:46:42,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:46:42,580 INFO L93 Difference]: Finished difference Result 1790215 states and 7049961 transitions. [2022-12-14 07:46:42,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:46:42,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2022-12-14 07:46:42,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted.