./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/06_ticket.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b5237d83 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_2f7e1ba3-7564-4a69-bedf-4d5831e8246e/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e1ba3-7564-4a69-bedf-4d5831e8246e/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e1ba3-7564-4a69-bedf-4d5831e8246e/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e1ba3-7564-4a69-bedf-4d5831e8246e/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/06_ticket.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e1ba3-7564-4a69-bedf-4d5831e8246e/bin/utaipan-g80aRyZoba/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e1ba3-7564-4a69-bedf-4d5831e8246e/bin/utaipan-g80aRyZoba --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 d21b75ab9211f19b3beb5c83d6d66f0a0906e2f271e4621d3ded70db8a63bb33 --- 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-b5237d8 [2022-11-22 02:40:06,595 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:40:06,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:40:06,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:40:06,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:40:06,643 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:40:06,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:40:06,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:40:06,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:40:06,655 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:40:06,657 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:40:06,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:40:06,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:40:06,662 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:40:06,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:40:06,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:40:06,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:40:06,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:40:06,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:40:06,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:40:06,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:40:06,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:40:06,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:40:06,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:40:06,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:40:06,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:40:06,694 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:40:06,697 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:40:06,697 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:40:06,698 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:40:06,699 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:40:06,700 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:40:06,701 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:40:06,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:40:06,705 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:40:06,705 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:40:06,706 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:40:06,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:40:06,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:40:06,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:40:06,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:40:06,710 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e1ba3-7564-4a69-bedf-4d5831e8246e/bin/utaipan-g80aRyZoba/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-22 02:40:06,751 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:40:06,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:40:06,753 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:40:06,753 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:40:06,754 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:40:06,754 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:40:06,754 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:40:06,755 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:40:06,755 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:40:06,755 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:40:06,756 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:40:06,757 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:40:06,757 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:40:06,757 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:40:06,758 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:40:06,758 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:40:06,758 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:40:06,759 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:40:06,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:40:06,760 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:40:06,760 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 02:40:06,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:40:06,761 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:40:06,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:40:06,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:40:06,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:40:06,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:40:06,763 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-22 02:40:06,763 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:40:06,763 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:40:06,764 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:40:06,764 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:40:06,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:40:06,765 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:40:06,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:40:06,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:40:06,766 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:40:06,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:40:06,766 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:40:06,766 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:40:06,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:40:06,767 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:40:06,767 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:40:06,768 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_2f7e1ba3-7564-4a69-bedf-4d5831e8246e/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e1ba3-7564-4a69-bedf-4d5831e8246e/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d21b75ab9211f19b3beb5c83d6d66f0a0906e2f271e4621d3ded70db8a63bb33 [2022-11-22 02:40:07,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:40:07,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:40:07,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:40:07,060 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:40:07,061 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:40:07,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e1ba3-7564-4a69-bedf-4d5831e8246e/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/pthread-ext/06_ticket.i [2022-11-22 02:40:10,035 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:40:10,352 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:40:10,353 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e1ba3-7564-4a69-bedf-4d5831e8246e/sv-benchmarks/c/pthread-ext/06_ticket.i [2022-11-22 02:40:10,367 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e1ba3-7564-4a69-bedf-4d5831e8246e/bin/utaipan-g80aRyZoba/data/08e65d343/b2e1167483074d4794ebbcc1689dff5e/FLAG0bf31dbe3 [2022-11-22 02:40:10,386 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e1ba3-7564-4a69-bedf-4d5831e8246e/bin/utaipan-g80aRyZoba/data/08e65d343/b2e1167483074d4794ebbcc1689dff5e [2022-11-22 02:40:10,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:40:10,397 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:40:10,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:40:10,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:40:10,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:40:10,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:40:10" (1/1) ... [2022-11-22 02:40:10,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18ce0984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:10, skipping insertion in model container [2022-11-22 02:40:10,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:40:10" (1/1) ... [2022-11-22 02:40:10,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:40:10,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:40:10,805 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_2f7e1ba3-7564-4a69-bedf-4d5831e8246e/sv-benchmarks/c/pthread-ext/06_ticket.i[30728,30741] [2022-11-22 02:40:10,810 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:40:10,820 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:40:10,893 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_2f7e1ba3-7564-4a69-bedf-4d5831e8246e/sv-benchmarks/c/pthread-ext/06_ticket.i[30728,30741] [2022-11-22 02:40:10,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:40:10,943 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:40:10,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:10 WrapperNode [2022-11-22 02:40:10,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:40:10,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:40:10,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:40:10,946 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:40:10,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:10" (1/1) ... [2022-11-22 02:40:10,985 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:10" (1/1) ... [2022-11-22 02:40:11,018 INFO L138 Inliner]: procedures = 172, calls = 16, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 102 [2022-11-22 02:40:11,018 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:40:11,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:40:11,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:40:11,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:40:11,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:10" (1/1) ... [2022-11-22 02:40:11,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:10" (1/1) ... [2022-11-22 02:40:11,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:10" (1/1) ... [2022-11-22 02:40:11,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:10" (1/1) ... [2022-11-22 02:40:11,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:10" (1/1) ... [2022-11-22 02:40:11,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:10" (1/1) ... [2022-11-22 02:40:11,053 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:10" (1/1) ... [2022-11-22 02:40:11,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:10" (1/1) ... [2022-11-22 02:40:11,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:40:11,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:40:11,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:40:11,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:40:11,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:10" (1/1) ... [2022-11-22 02:40:11,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:40:11,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e1ba3-7564-4a69-bedf-4d5831e8246e/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:40:11,096 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e1ba3-7564-4a69-bedf-4d5831e8246e/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:40:11,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e1ba3-7564-4a69-bedf-4d5831e8246e/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:40:11,149 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-22 02:40:11,150 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-22 02:40:11,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:40:11,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-22 02:40:11,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:40:11,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:40:11,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:40:11,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:40:11,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-22 02:40:11,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:40:11,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:40:11,153 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-22 02:40:11,286 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:40:11,288 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:40:11,582 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:40:11,697 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:40:11,697 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-22 02:40:11,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:40:11 BoogieIcfgContainer [2022-11-22 02:40:11,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:40:11,703 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:40:11,703 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:40:11,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:40:11,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:40:10" (1/3) ... [2022-11-22 02:40:11,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c03213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:40:11, skipping insertion in model container [2022-11-22 02:40:11,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:10" (2/3) ... [2022-11-22 02:40:11,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c03213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:40:11, skipping insertion in model container [2022-11-22 02:40:11,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:40:11" (3/3) ... [2022-11-22 02:40:11,709 INFO L112 eAbstractionObserver]: Analyzing ICFG 06_ticket.i [2022-11-22 02:40:11,719 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-22 02:40:11,730 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:40:11,730 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2022-11-22 02:40:11,730 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-22 02:40:11,791 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-22 02:40:11,825 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 02:40:11,840 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 113 transitions, 231 flow [2022-11-22 02:40:11,843 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 113 transitions, 231 flow [2022-11-22 02:40:11,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 113 transitions, 231 flow [2022-11-22 02:40:11,921 INFO L130 PetriNetUnfolder]: 8/124 cut-off events. [2022-11-22 02:40:11,922 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-22 02:40:11,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 124 events. 8/124 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 128 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 95. Up to 4 conditions per place. [2022-11-22 02:40:11,935 INFO L119 LiptonReduction]: Number of co-enabled transitions 2296 [2022-11-22 02:40:14,954 INFO L134 LiptonReduction]: Checked pairs total: 2264 [2022-11-22 02:40:14,954 INFO L136 LiptonReduction]: Total number of compositions: 141 [2022-11-22 02:40:14,963 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 24 transitions, 53 flow [2022-11-22 02:40:14,992 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 87 states, 60 states have (on average 2.65) internal successors, (159), 86 states have internal predecessors, (159), 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) [2022-11-22 02:40:15,019 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:40:15,028 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;@159b79f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:40:15,029 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-11-22 02:40:15,032 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 60 states have (on average 2.65) internal successors, (159), 86 states have internal predecessors, (159), 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) [2022-11-22 02:40:15,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 02:40:15,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:15,039 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 02:40:15,039 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-22 02:40:15,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:15,047 INFO L85 PathProgramCache]: Analyzing trace with hash 17208854, now seen corresponding path program 1 times [2022-11-22 02:40:15,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:15,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885601928] [2022-11-22 02:40:15,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:15,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:15,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:40:15,260 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:40:15,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885601928] [2022-11-22 02:40:15,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885601928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:40:15,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:40:15,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 02:40:15,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701213920] [2022-11-22 02:40:15,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:40:15,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 02:40:15,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:40:15,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 02:40:15,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 02:40:15,301 INFO L87 Difference]: Start difference. First operand has 87 states, 60 states have (on average 2.65) internal successors, (159), 86 states have internal predecessors, (159), 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 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-22 02:40:15,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:15,340 INFO L93 Difference]: Finished difference Result 19 states and 31 transitions. [2022-11-22 02:40:15,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 02:40:15,350 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2022-11-22 02:40:15,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:15,357 INFO L225 Difference]: With dead ends: 19 [2022-11-22 02:40:15,357 INFO L226 Difference]: Without dead ends: 19 [2022-11-22 02:40:15,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 02:40:15,360 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:15,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:40:15,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-22 02:40:15,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-22 02:40:15,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 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) [2022-11-22 02:40:15,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 31 transitions. [2022-11-22 02:40:15,393 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 31 transitions. Word has length 4 [2022-11-22 02:40:15,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:15,395 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 31 transitions. [2022-11-22 02:40:15,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-22 02:40:15,399 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 31 transitions. [2022-11-22 02:40:15,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 02:40:15,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:15,400 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-22 02:40:15,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:40:15,400 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-22 02:40:15,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:15,401 INFO L85 PathProgramCache]: Analyzing trace with hash -642214657, now seen corresponding path program 1 times [2022-11-22 02:40:15,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:15,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986986977] [2022-11-22 02:40:15,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:15,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:15,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 02:40:15,448 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 02:40:15,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 02:40:15,500 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 02:40:15,501 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 02:40:15,503 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 27 remaining) [2022-11-22 02:40:15,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (25 of 27 remaining) [2022-11-22 02:40:15,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (24 of 27 remaining) [2022-11-22 02:40:15,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (23 of 27 remaining) [2022-11-22 02:40:15,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (22 of 27 remaining) [2022-11-22 02:40:15,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (21 of 27 remaining) [2022-11-22 02:40:15,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (20 of 27 remaining) [2022-11-22 02:40:15,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 27 remaining) [2022-11-22 02:40:15,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (18 of 27 remaining) [2022-11-22 02:40:15,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (17 of 27 remaining) [2022-11-22 02:40:15,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (16 of 27 remaining) [2022-11-22 02:40:15,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (15 of 27 remaining) [2022-11-22 02:40:15,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (14 of 27 remaining) [2022-11-22 02:40:15,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (13 of 27 remaining) [2022-11-22 02:40:15,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 27 remaining) [2022-11-22 02:40:15,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 27 remaining) [2022-11-22 02:40:15,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 27 remaining) [2022-11-22 02:40:15,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 27 remaining) [2022-11-22 02:40:15,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (8 of 27 remaining) [2022-11-22 02:40:15,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (7 of 27 remaining) [2022-11-22 02:40:15,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (6 of 27 remaining) [2022-11-22 02:40:15,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 27 remaining) [2022-11-22 02:40:15,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (4 of 27 remaining) [2022-11-22 02:40:15,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (3 of 27 remaining) [2022-11-22 02:40:15,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (2 of 27 remaining) [2022-11-22 02:40:15,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (1 of 27 remaining) [2022-11-22 02:40:15,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (0 of 27 remaining) [2022-11-22 02:40:15,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:40:15,520 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-22 02:40:15,524 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-22 02:40:15,524 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-22 02:40:15,558 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-22 02:40:15,562 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 02:40:15,562 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 188 places, 196 transitions, 404 flow [2022-11-22 02:40:15,563 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 188 places, 196 transitions, 404 flow [2022-11-22 02:40:15,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 196 transitions, 404 flow [2022-11-22 02:40:15,615 INFO L130 PetriNetUnfolder]: 15/220 cut-off events. [2022-11-22 02:40:15,615 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-22 02:40:15,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 220 events. 15/220 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 459 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 177. Up to 6 conditions per place. [2022-11-22 02:40:15,630 INFO L119 LiptonReduction]: Number of co-enabled transitions 18204 [2022-11-22 02:40:20,401 INFO L134 LiptonReduction]: Checked pairs total: 81239 [2022-11-22 02:40:20,401 INFO L136 LiptonReduction]: Total number of compositions: 157 [2022-11-22 02:40:20,402 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 89 places, 91 transitions, 194 flow [2022-11-22 02:40:20,674 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9322 states, 8918 states have (on average 3.075241085445167) internal successors, (27425), 9321 states have internal predecessors, (27425), 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) [2022-11-22 02:40:20,677 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:40:20,679 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;@159b79f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:40:20,679 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2022-11-22 02:40:20,715 INFO L276 IsEmpty]: Start isEmpty. Operand has 9322 states, 8918 states have (on average 3.075241085445167) internal successors, (27425), 9321 states have internal predecessors, (27425), 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) [2022-11-22 02:40:20,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 02:40:20,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:20,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 02:40:20,724 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2022-11-22 02:40:20,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:20,725 INFO L85 PathProgramCache]: Analyzing trace with hash 30479262, now seen corresponding path program 1 times [2022-11-22 02:40:20,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:20,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081491307] [2022-11-22 02:40:20,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:20,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:20,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:40:20,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:40:20,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081491307] [2022-11-22 02:40:20,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081491307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:40:20,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:40:20,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 02:40:20,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194212386] [2022-11-22 02:40:20,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:40:20,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 02:40:20,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:40:20,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 02:40:20,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 02:40:20,805 INFO L87 Difference]: Start difference. First operand has 9322 states, 8918 states have (on average 3.075241085445167) internal successors, (27425), 9321 states have internal predecessors, (27425), 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 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-22 02:40:21,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:21,003 INFO L93 Difference]: Finished difference Result 5919 states and 16459 transitions. [2022-11-22 02:40:21,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 02:40:21,004 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2022-11-22 02:40:21,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:21,046 INFO L225 Difference]: With dead ends: 5919 [2022-11-22 02:40:21,047 INFO L226 Difference]: Without dead ends: 5919 [2022-11-22 02:40:21,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 02:40:21,048 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:21,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:40:21,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5919 states. [2022-11-22 02:40:21,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5919 to 5919. [2022-11-22 02:40:21,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5919 states, 5838 states have (on average 2.8192874272010964) internal successors, (16459), 5918 states have internal predecessors, (16459), 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) [2022-11-22 02:40:21,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5919 states to 5919 states and 16459 transitions. [2022-11-22 02:40:21,340 INFO L78 Accepts]: Start accepts. Automaton has 5919 states and 16459 transitions. Word has length 4 [2022-11-22 02:40:21,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:21,341 INFO L495 AbstractCegarLoop]: Abstraction has 5919 states and 16459 transitions. [2022-11-22 02:40:21,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-22 02:40:21,341 INFO L276 IsEmpty]: Start isEmpty. Operand 5919 states and 16459 transitions. [2022-11-22 02:40:21,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 02:40:21,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:21,342 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 02:40:21,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:40:21,343 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err5ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2022-11-22 02:40:21,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:21,344 INFO L85 PathProgramCache]: Analyzing trace with hash -774140011, now seen corresponding path program 1 times [2022-11-22 02:40:21,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:21,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416306702] [2022-11-22 02:40:21,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:21,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:21,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:21,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:40:21,463 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:40:21,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416306702] [2022-11-22 02:40:21,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416306702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:40:21,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:40:21,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:40:21,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701052731] [2022-11-22 02:40:21,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:40:21,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:40:21,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:40:21,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:40:21,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:40:21,466 INFO L87 Difference]: Start difference. First operand 5919 states and 16459 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) [2022-11-22 02:40:21,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:21,640 INFO L93 Difference]: Finished difference Result 6151 states and 16845 transitions. [2022-11-22 02:40:21,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:40:21,641 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 [2022-11-22 02:40:21,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:21,677 INFO L225 Difference]: With dead ends: 6151 [2022-11-22 02:40:21,677 INFO L226 Difference]: Without dead ends: 6151 [2022-11-22 02:40:21,678 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 [2022-11-22 02:40:21,678 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 61 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:21,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 84 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:40:21,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6151 states. [2022-11-22 02:40:21,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6151 to 5371. [2022-11-22 02:40:21,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5371 states, 5314 states have (on average 2.802220549491908) internal successors, (14891), 5370 states have internal predecessors, (14891), 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) [2022-11-22 02:40:21,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5371 states to 5371 states and 14891 transitions. [2022-11-22 02:40:21,913 INFO L78 Accepts]: Start accepts. Automaton has 5371 states and 14891 transitions. Word has length 6 [2022-11-22 02:40:21,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:21,914 INFO L495 AbstractCegarLoop]: Abstraction has 5371 states and 14891 transitions. [2022-11-22 02:40:21,914 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) [2022-11-22 02:40:21,914 INFO L276 IsEmpty]: Start isEmpty. Operand 5371 states and 14891 transitions. [2022-11-22 02:40:21,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 02:40:21,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:21,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:40:21,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:40:21,921 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2022-11-22 02:40:21,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:21,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1570185603, now seen corresponding path program 1 times [2022-11-22 02:40:21,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:21,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047661416] [2022-11-22 02:40:21,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:21,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:21,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:40:21,970 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:40:21,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047661416] [2022-11-22 02:40:21,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047661416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:40:21,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:40:21,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:40:21,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745198812] [2022-11-22 02:40:21,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:40:21,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:40:21,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:40:21,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:40:21,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:40:21,973 INFO L87 Difference]: Start difference. First operand 5371 states and 14891 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2022-11-22 02:40:22,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:22,156 INFO L93 Difference]: Finished difference Result 6474 states and 17639 transitions. [2022-11-22 02:40:22,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:40:22,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 [2022-11-22 02:40:22,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:22,192 INFO L225 Difference]: With dead ends: 6474 [2022-11-22 02:40:22,193 INFO L226 Difference]: Without dead ends: 6474 [2022-11-22 02:40:22,193 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 [2022-11-22 02:40:22,194 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 53 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:22,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 84 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:40:22,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6474 states. [2022-11-22 02:40:22,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6474 to 5434. [2022-11-22 02:40:22,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5434 states, 5386 states have (on average 2.749164500557) internal successors, (14807), 5433 states have internal predecessors, (14807), 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) [2022-11-22 02:40:22,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5434 states to 5434 states and 14807 transitions. [2022-11-22 02:40:22,457 INFO L78 Accepts]: Start accepts. Automaton has 5434 states and 14807 transitions. Word has length 9 [2022-11-22 02:40:22,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:22,457 INFO L495 AbstractCegarLoop]: Abstraction has 5434 states and 14807 transitions. [2022-11-22 02:40:22,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2022-11-22 02:40:22,458 INFO L276 IsEmpty]: Start isEmpty. Operand 5434 states and 14807 transitions. [2022-11-22 02:40:22,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 02:40:22,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:22,461 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-22 02:40:22,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:40:22,461 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2022-11-22 02:40:22,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:22,462 INFO L85 PathProgramCache]: Analyzing trace with hash 411285916, now seen corresponding path program 1 times [2022-11-22 02:40:22,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:22,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450305862] [2022-11-22 02:40:22,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:22,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:22,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 02:40:22,495 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 02:40:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 02:40:22,518 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 02:40:22,518 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 02:40:22,519 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (39 of 40 remaining) [2022-11-22 02:40:22,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (38 of 40 remaining) [2022-11-22 02:40:22,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (37 of 40 remaining) [2022-11-22 02:40:22,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (36 of 40 remaining) [2022-11-22 02:40:22,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (35 of 40 remaining) [2022-11-22 02:40:22,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (34 of 40 remaining) [2022-11-22 02:40:22,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (33 of 40 remaining) [2022-11-22 02:40:22,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (32 of 40 remaining) [2022-11-22 02:40:22,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (31 of 40 remaining) [2022-11-22 02:40:22,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (30 of 40 remaining) [2022-11-22 02:40:22,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (29 of 40 remaining) [2022-11-22 02:40:22,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (28 of 40 remaining) [2022-11-22 02:40:22,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (27 of 40 remaining) [2022-11-22 02:40:22,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (26 of 40 remaining) [2022-11-22 02:40:22,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (25 of 40 remaining) [2022-11-22 02:40:22,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (24 of 40 remaining) [2022-11-22 02:40:22,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (23 of 40 remaining) [2022-11-22 02:40:22,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (22 of 40 remaining) [2022-11-22 02:40:22,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (21 of 40 remaining) [2022-11-22 02:40:22,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (20 of 40 remaining) [2022-11-22 02:40:22,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 40 remaining) [2022-11-22 02:40:22,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (18 of 40 remaining) [2022-11-22 02:40:22,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (17 of 40 remaining) [2022-11-22 02:40:22,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (16 of 40 remaining) [2022-11-22 02:40:22,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (15 of 40 remaining) [2022-11-22 02:40:22,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (14 of 40 remaining) [2022-11-22 02:40:22,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (13 of 40 remaining) [2022-11-22 02:40:22,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 40 remaining) [2022-11-22 02:40:22,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 40 remaining) [2022-11-22 02:40:22,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 40 remaining) [2022-11-22 02:40:22,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 40 remaining) [2022-11-22 02:40:22,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (8 of 40 remaining) [2022-11-22 02:40:22,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (7 of 40 remaining) [2022-11-22 02:40:22,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (6 of 40 remaining) [2022-11-22 02:40:22,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 40 remaining) [2022-11-22 02:40:22,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (4 of 40 remaining) [2022-11-22 02:40:22,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (3 of 40 remaining) [2022-11-22 02:40:22,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (2 of 40 remaining) [2022-11-22 02:40:22,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (1 of 40 remaining) [2022-11-22 02:40:22,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (0 of 40 remaining) [2022-11-22 02:40:22,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:40:22,535 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-22 02:40:22,536 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-22 02:40:22,536 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-22 02:40:22,596 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-22 02:40:22,601 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 02:40:22,601 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 267 places, 279 transitions, 579 flow [2022-11-22 02:40:22,602 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 267 places, 279 transitions, 579 flow [2022-11-22 02:40:22,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 279 transitions, 579 flow [2022-11-22 02:40:22,692 INFO L130 PetriNetUnfolder]: 22/316 cut-off events. [2022-11-22 02:40:22,692 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-22 02:40:22,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 316 events. 22/316 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 938 event pairs, 0 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 259. Up to 8 conditions per place. [2022-11-22 02:40:22,720 INFO L119 LiptonReduction]: Number of co-enabled transitions 47724 [2022-11-22 02:40:30,843 INFO L134 LiptonReduction]: Checked pairs total: 213710 [2022-11-22 02:40:30,844 INFO L136 LiptonReduction]: Total number of compositions: 224 [2022-11-22 02:40:30,845 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 130 places, 134 transitions, 289 flow [2022-11-22 02:40:41,736 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 363714 states, 358019 states have (on average 4.082266583617071) internal successors, (1461529), 363713 states have internal predecessors, (1461529), 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) [2022-11-22 02:40:41,740 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:40:41,741 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;@159b79f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:40:41,745 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2022-11-22 02:40:42,242 INFO L276 IsEmpty]: Start isEmpty. Operand has 363714 states, 358019 states have (on average 4.082266583617071) internal successors, (1461529), 363713 states have internal predecessors, (1461529), 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) [2022-11-22 02:40:42,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 02:40:42,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:42,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 02:40:42,243 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-11-22 02:40:42,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:42,246 INFO L85 PathProgramCache]: Analyzing trace with hash 48317663, now seen corresponding path program 1 times [2022-11-22 02:40:42,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:42,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553704484] [2022-11-22 02:40:42,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:42,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:42,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:40:42,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:40:42,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553704484] [2022-11-22 02:40:42,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553704484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:40:42,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:40:42,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 02:40:42,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718949703] [2022-11-22 02:40:42,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:40:42,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 02:40:42,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:40:42,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 02:40:42,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 02:40:42,732 INFO L87 Difference]: Start difference. First operand has 363714 states, 358019 states have (on average 4.082266583617071) internal successors, (1461529), 363713 states have internal predecessors, (1461529), 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 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-22 02:40:47,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:47,416 INFO L93 Difference]: Finished difference Result 201283 states and 760923 transitions. [2022-11-22 02:40:47,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 02:40:47,416 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2022-11-22 02:40:47,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:49,214 INFO L225 Difference]: With dead ends: 201283 [2022-11-22 02:40:49,214 INFO L226 Difference]: Without dead ends: 201283 [2022-11-22 02:40:49,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 02:40:49,215 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:49,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 71 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:40:50,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201283 states. [2022-11-22 02:40:57,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201283 to 201283. [2022-11-22 02:40:57,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201283 states, 200554 states have (on average 3.794105328240773) internal successors, (760923), 201282 states have internal predecessors, (760923), 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) [2022-11-22 02:40:59,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201283 states to 201283 states and 760923 transitions. [2022-11-22 02:40:59,968 INFO L78 Accepts]: Start accepts. Automaton has 201283 states and 760923 transitions. Word has length 4 [2022-11-22 02:40:59,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:59,969 INFO L495 AbstractCegarLoop]: Abstraction has 201283 states and 760923 transitions. [2022-11-22 02:40:59,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-22 02:40:59,969 INFO L276 IsEmpty]: Start isEmpty. Operand 201283 states and 760923 transitions. [2022-11-22 02:40:59,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 02:40:59,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:59,970 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 02:40:59,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 02:40:59,970 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err5ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-11-22 02:40:59,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:59,975 INFO L85 PathProgramCache]: Analyzing trace with hash -811310730, now seen corresponding path program 1 times [2022-11-22 02:40:59,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:59,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545515991] [2022-11-22 02:40:59,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:59,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:41:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:41:00,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:41:00,027 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:41:00,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545515991] [2022-11-22 02:41:00,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545515991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:41:00,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:41:00,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:41:00,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915914320] [2022-11-22 02:41:00,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:41:00,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:41:00,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:41:00,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:41:00,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:41:00,030 INFO L87 Difference]: Start difference. First operand 201283 states and 760923 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) [2022-11-22 02:41:03,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:41:03,519 INFO L93 Difference]: Finished difference Result 221077 states and 815070 transitions. [2022-11-22 02:41:03,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:41:03,520 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 [2022-11-22 02:41:03,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:41:05,155 INFO L225 Difference]: With dead ends: 221077 [2022-11-22 02:41:05,155 INFO L226 Difference]: Without dead ends: 221077 [2022-11-22 02:41:05,156 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 [2022-11-22 02:41:05,156 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 90 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:41:05,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 122 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:41:06,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221077 states. [2022-11-22 02:41:11,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221077 to 179503. [2022-11-22 02:41:13,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179503 states, 178992 states have (on average 3.7684756860641815) internal successors, (674527), 179502 states have internal predecessors, (674527), 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)