./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-deagle/airline-25.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ec2056-40b0-408e-aa76-765a70b5a9e7/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ec2056-40b0-408e-aa76-765a70b5a9e7/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ec2056-40b0-408e-aa76-765a70b5a9e7/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ec2056-40b0-408e-aa76-765a70b5a9e7/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-deagle/airline-25.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ec2056-40b0-408e-aa76-765a70b5a9e7/bin/utaipan-Xvt2sAort0/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ec2056-40b0-408e-aa76-765a70b5a9e7/bin/utaipan-Xvt2sAort0 --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 a0d81069750f24e52e04bdb7efecd6d77b64aec41e058c154f75fbba11e6c11d --- 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-e04fb08 [2022-11-16 19:49:57,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 19:49:57,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 19:49:57,629 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 19:49:57,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 19:49:57,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 19:49:57,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 19:49:57,644 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 19:49:57,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 19:49:57,651 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 19:49:57,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 19:49:57,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 19:49:57,661 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 19:49:57,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 19:49:57,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 19:49:57,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 19:49:57,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 19:49:57,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 19:49:57,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 19:49:57,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 19:49:57,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 19:49:57,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 19:49:57,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 19:49:57,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 19:49:57,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 19:49:57,680 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 19:49:57,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 19:49:57,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 19:49:57,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 19:49:57,683 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 19:49:57,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 19:49:57,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 19:49:57,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 19:49:57,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 19:49:57,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 19:49:57,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 19:49:57,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 19:49:57,688 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 19:49:57,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 19:49:57,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 19:49:57,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 19:49:57,691 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ec2056-40b0-408e-aa76-765a70b5a9e7/bin/utaipan-Xvt2sAort0/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-16 19:49:57,713 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 19:49:57,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 19:49:57,713 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 19:49:57,714 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 19:49:57,714 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 19:49:57,715 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 19:49:57,715 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 19:49:57,715 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 19:49:57,715 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 19:49:57,716 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 19:49:57,716 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 19:49:57,716 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 19:49:57,716 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 19:49:57,717 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 19:49:57,717 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 19:49:57,717 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 19:49:57,717 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 19:49:57,717 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 19:49:57,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 19:49:57,718 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 19:49:57,719 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 19:49:57,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 19:49:57,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 19:49:57,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 19:49:57,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 19:49:57,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 19:49:57,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 19:49:57,720 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-16 19:49:57,721 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 19:49:57,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 19:49:57,721 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 19:49:57,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 19:49:57,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 19:49:57,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 19:49:57,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:49:57,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 19:49:57,722 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 19:49:57,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 19:49:57,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 19:49:57,723 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 19:49:57,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 19:49:57,723 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 19:49:57,724 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 19:49:57,724 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_b3ec2056-40b0-408e-aa76-765a70b5a9e7/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ec2056-40b0-408e-aa76-765a70b5a9e7/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0d81069750f24e52e04bdb7efecd6d77b64aec41e058c154f75fbba11e6c11d [2022-11-16 19:49:58,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 19:49:58,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 19:49:58,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 19:49:58,086 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 19:49:58,087 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 19:49:58,089 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ec2056-40b0-408e-aa76-765a70b5a9e7/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/pthread-deagle/airline-25.i [2022-11-16 19:49:58,162 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ec2056-40b0-408e-aa76-765a70b5a9e7/bin/utaipan-Xvt2sAort0/data/e4e512bb1/04d33a209d0345b9ac5b3fa648f2a82c/FLAG9fd6557ea [2022-11-16 19:49:58,708 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 19:49:58,709 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ec2056-40b0-408e-aa76-765a70b5a9e7/sv-benchmarks/c/pthread-deagle/airline-25.i [2022-11-16 19:49:58,723 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ec2056-40b0-408e-aa76-765a70b5a9e7/bin/utaipan-Xvt2sAort0/data/e4e512bb1/04d33a209d0345b9ac5b3fa648f2a82c/FLAG9fd6557ea [2022-11-16 19:49:59,020 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ec2056-40b0-408e-aa76-765a70b5a9e7/bin/utaipan-Xvt2sAort0/data/e4e512bb1/04d33a209d0345b9ac5b3fa648f2a82c [2022-11-16 19:49:59,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 19:49:59,026 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 19:49:59,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 19:49:59,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 19:49:59,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 19:49:59,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:49:59" (1/1) ... [2022-11-16 19:49:59,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49571a04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:49:59, skipping insertion in model container [2022-11-16 19:49:59,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:49:59" (1/1) ... [2022-11-16 19:49:59,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 19:49:59,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 19:49:59,622 WARN L229 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_b3ec2056-40b0-408e-aa76-765a70b5a9e7/sv-benchmarks/c/pthread-deagle/airline-25.i[32101,32114] [2022-11-16 19:49:59,623 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:49:59,630 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 19:49:59,693 WARN L229 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_b3ec2056-40b0-408e-aa76-765a70b5a9e7/sv-benchmarks/c/pthread-deagle/airline-25.i[32101,32114] [2022-11-16 19:49:59,711 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:49:59,749 INFO L208 MainTranslator]: Completed translation [2022-11-16 19:49:59,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:49:59 WrapperNode [2022-11-16 19:49:59,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 19:49:59,752 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 19:49:59,752 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 19:49:59,752 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 19:49:59,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:49:59" (1/1) ... [2022-11-16 19:49:59,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:49:59" (1/1) ... [2022-11-16 19:49:59,814 INFO L138 Inliner]: procedures = 162, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80 [2022-11-16 19:49:59,818 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 19:49:59,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 19:49:59,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 19:49:59,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 19:49:59,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:49:59" (1/1) ... [2022-11-16 19:49:59,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:49:59" (1/1) ... [2022-11-16 19:49:59,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:49:59" (1/1) ... [2022-11-16 19:49:59,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:49:59" (1/1) ... [2022-11-16 19:49:59,847 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:49:59" (1/1) ... [2022-11-16 19:49:59,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:49:59" (1/1) ... [2022-11-16 19:49:59,862 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:49:59" (1/1) ... [2022-11-16 19:49:59,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:49:59" (1/1) ... [2022-11-16 19:49:59,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 19:49:59,880 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 19:49:59,880 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 19:49:59,880 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 19:49:59,881 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:49:59" (1/1) ... [2022-11-16 19:49:59,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:49:59,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ec2056-40b0-408e-aa76-765a70b5a9e7/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:49:59,914 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ec2056-40b0-408e-aa76-765a70b5a9e7/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 19:49:59,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ec2056-40b0-408e-aa76-765a70b5a9e7/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 19:49:59,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 19:49:59,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 19:49:59,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 19:49:59,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 19:49:59,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 19:49:59,972 INFO L130 BoogieDeclarations]: Found specification of procedure salethread [2022-11-16 19:49:59,972 INFO L138 BoogieDeclarations]: Found implementation of procedure salethread [2022-11-16 19:49:59,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 19:49:59,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 19:49:59,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 19:49:59,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 19:49:59,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 19:49:59,975 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 19:50:00,158 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 19:50:00,160 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 19:50:00,391 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 19:50:00,444 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 19:50:00,446 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 19:50:00,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:50:00 BoogieIcfgContainer [2022-11-16 19:50:00,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 19:50:00,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 19:50:00,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 19:50:00,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 19:50:00,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:49:59" (1/3) ... [2022-11-16 19:50:00,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1540e849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:50:00, skipping insertion in model container [2022-11-16 19:50:00,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:49:59" (2/3) ... [2022-11-16 19:50:00,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1540e849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:50:00, skipping insertion in model container [2022-11-16 19:50:00,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:50:00" (3/3) ... [2022-11-16 19:50:00,464 INFO L112 eAbstractionObserver]: Analyzing ICFG airline-25.i [2022-11-16 19:50:00,473 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 19:50:00,485 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 19:50:00,485 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2022-11-16 19:50:00,485 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 19:50:00,567 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-16 19:50:00,601 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 19:50:00,617 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 88 transitions, 184 flow [2022-11-16 19:50:00,627 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 88 transitions, 184 flow [2022-11-16 19:50:00,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 88 transitions, 184 flow [2022-11-16 19:50:00,689 INFO L130 PetriNetUnfolder]: 9/119 cut-off events. [2022-11-16 19:50:00,689 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 19:50:00,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 119 events. 9/119 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 238 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 58. Up to 4 conditions per place. [2022-11-16 19:50:00,696 INFO L119 LiptonReduction]: Number of co-enabled transitions 1332 [2022-11-16 19:50:03,990 INFO L134 LiptonReduction]: Checked pairs total: 2155 [2022-11-16 19:50:03,990 INFO L136 LiptonReduction]: Total number of compositions: 101 [2022-11-16 19:50:04,000 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 24 transitions, 56 flow [2022-11-16 19:50:04,030 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 82 states, 51 states have (on average 3.0) internal successors, (153), 81 states have internal predecessors, (153), 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) [2022-11-16 19:50:04,056 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 19:50:04,070 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;@5895aede, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 19:50:04,071 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-11-16 19:50:04,074 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 51 states have (on average 3.0) internal successors, (153), 81 states have internal predecessors, (153), 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) [2022-11-16 19:50:04,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-16 19:50:04,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:50:04,081 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-16 19:50:04,082 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2022-11-16 19:50:04,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:50:04,093 INFO L85 PathProgramCache]: Analyzing trace with hash 399, now seen corresponding path program 1 times [2022-11-16 19:50:04,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:50:04,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141760226] [2022-11-16 19:50:04,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:04,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:50:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:04,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:04,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:50:04,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141760226] [2022-11-16 19:50:04,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141760226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:50:04,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:50:04,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-16 19:50:04,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554775481] [2022-11-16 19:50:04,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:50:04,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 19:50:04,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:50:04,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 19:50:04,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 19:50:04,274 INFO L87 Difference]: Start difference. First operand has 82 states, 51 states have (on average 3.0) internal successors, (153), 81 states have internal predecessors, (153), 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 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-16 19:50:04,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:50:04,324 INFO L93 Difference]: Finished difference Result 31 states and 53 transitions. [2022-11-16 19:50:04,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 19:50:04,327 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2022-11-16 19:50:04,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:50:04,336 INFO L225 Difference]: With dead ends: 31 [2022-11-16 19:50:04,336 INFO L226 Difference]: Without dead ends: 15 [2022-11-16 19:50:04,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 19:50:04,341 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:50:04,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:50:04,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-16 19:50:04,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-16 19:50:04,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 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) [2022-11-16 19:50:04,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 24 transitions. [2022-11-16 19:50:04,375 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 24 transitions. Word has length 1 [2022-11-16 19:50:04,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:50:04,396 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 24 transitions. [2022-11-16 19:50:04,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-16 19:50:04,402 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 24 transitions. [2022-11-16 19:50:04,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 19:50:04,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:50:04,403 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-16 19:50:04,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 19:50:04,404 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2022-11-16 19:50:04,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:50:04,406 INFO L85 PathProgramCache]: Analyzing trace with hash -986152956, now seen corresponding path program 1 times [2022-11-16 19:50:04,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:50:04,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41781910] [2022-11-16 19:50:04,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:04,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:50:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 19:50:04,453 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 19:50:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 19:50:04,490 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-16 19:50:04,491 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 19:50:04,493 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2022-11-16 19:50:04,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2022-11-16 19:50:04,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2022-11-16 19:50:04,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr2ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2022-11-16 19:50:04,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr3ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2022-11-16 19:50:04,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2022-11-16 19:50:04,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2022-11-16 19:50:04,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2022-11-16 19:50:04,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2022-11-16 19:50:04,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2022-11-16 19:50:04,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2022-11-16 19:50:04,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2022-11-16 19:50:04,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr2ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2022-11-16 19:50:04,499 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr3ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2022-11-16 19:50:04,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 19:50:04,502 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-16 19:50:04,504 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 19:50:04,504 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 19:50:04,524 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 19:50:04,527 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 19:50:04,528 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 108 transitions, 234 flow [2022-11-16 19:50:04,528 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 108 transitions, 234 flow [2022-11-16 19:50:04,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 108 transitions, 234 flow [2022-11-16 19:50:04,577 INFO L130 PetriNetUnfolder]: 18/209 cut-off events. [2022-11-16 19:50:04,577 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-16 19:50:04,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 209 events. 18/209 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 516 event pairs, 0 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 121. Up to 8 conditions per place. [2022-11-16 19:50:04,584 INFO L119 LiptonReduction]: Number of co-enabled transitions 3708 [2022-11-16 19:50:07,738 INFO L134 LiptonReduction]: Checked pairs total: 13834 [2022-11-16 19:50:07,739 INFO L136 LiptonReduction]: Total number of compositions: 115 [2022-11-16 19:50:07,740 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 46 transitions, 110 flow [2022-11-16 19:50:07,840 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2005 states, 1845 states have (on average 3.1235772357723577) internal successors, (5763), 2004 states have internal predecessors, (5763), 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) [2022-11-16 19:50:07,842 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 19:50:07,843 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;@5895aede, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 19:50:07,844 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-16 19:50:07,850 INFO L276 IsEmpty]: Start isEmpty. Operand has 2005 states, 1845 states have (on average 3.1235772357723577) internal successors, (5763), 2004 states have internal predecessors, (5763), 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) [2022-11-16 19:50:07,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-16 19:50:07,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:50:07,851 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-16 19:50:07,851 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2022-11-16 19:50:07,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:50:07,852 INFO L85 PathProgramCache]: Analyzing trace with hash 640, now seen corresponding path program 1 times [2022-11-16 19:50:07,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:50:07,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920284213] [2022-11-16 19:50:07,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:07,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:50:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:07,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:07,895 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:50:07,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920284213] [2022-11-16 19:50:07,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920284213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:50:07,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:50:07,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-16 19:50:07,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238568559] [2022-11-16 19:50:07,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:50:07,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 19:50:07,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:50:07,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 19:50:07,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 19:50:07,903 INFO L87 Difference]: Start difference. First operand has 2005 states, 1845 states have (on average 3.1235772357723577) internal successors, (5763), 2004 states have internal predecessors, (5763), 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 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-16 19:50:07,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:50:07,974 INFO L93 Difference]: Finished difference Result 1309 states and 3621 transitions. [2022-11-16 19:50:07,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 19:50:07,975 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2022-11-16 19:50:07,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:50:07,993 INFO L225 Difference]: With dead ends: 1309 [2022-11-16 19:50:07,994 INFO L226 Difference]: Without dead ends: 1260 [2022-11-16 19:50:07,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 19:50:07,995 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:50:07,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:50:08,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2022-11-16 19:50:08,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1260. [2022-11-16 19:50:08,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1260 states, 1215 states have (on average 2.8576131687242796) internal successors, (3472), 1259 states have internal predecessors, (3472), 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) [2022-11-16 19:50:08,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 3472 transitions. [2022-11-16 19:50:08,100 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 3472 transitions. Word has length 1 [2022-11-16 19:50:08,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:50:08,100 INFO L495 AbstractCegarLoop]: Abstraction has 1260 states and 3472 transitions. [2022-11-16 19:50:08,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-16 19:50:08,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 3472 transitions. [2022-11-16 19:50:08,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 19:50:08,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:50:08,101 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 19:50:08,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 19:50:08,102 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2022-11-16 19:50:08,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:50:08,102 INFO L85 PathProgramCache]: Analyzing trace with hash 19813843, now seen corresponding path program 1 times [2022-11-16 19:50:08,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:50:08,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685001204] [2022-11-16 19:50:08,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:08,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:50:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:08,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:08,190 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:50:08,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685001204] [2022-11-16 19:50:08,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685001204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:50:08,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:50:08,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:50:08,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128604645] [2022-11-16 19:50:08,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:50:08,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:50:08,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:50:08,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:50:08,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:50:08,193 INFO L87 Difference]: Start difference. First operand 1260 states and 3472 transitions. Second operand has 3 states, 3 states have (on average 1.3333333333333333) 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) [2022-11-16 19:50:08,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:50:08,287 INFO L93 Difference]: Finished difference Result 1260 states and 3471 transitions. [2022-11-16 19:50:08,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:50:08,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) 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 [2022-11-16 19:50:08,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:50:08,297 INFO L225 Difference]: With dead ends: 1260 [2022-11-16 19:50:08,298 INFO L226 Difference]: Without dead ends: 1260 [2022-11-16 19:50:08,298 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 [2022-11-16 19:50:08,299 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 13 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:50:08,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 34 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:50:08,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2022-11-16 19:50:08,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1260. [2022-11-16 19:50:08,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1260 states, 1215 states have (on average 2.8567901234567903) internal successors, (3471), 1259 states have internal predecessors, (3471), 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) [2022-11-16 19:50:08,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 3471 transitions. [2022-11-16 19:50:08,371 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 3471 transitions. Word has length 4 [2022-11-16 19:50:08,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:50:08,372 INFO L495 AbstractCegarLoop]: Abstraction has 1260 states and 3471 transitions. [2022-11-16 19:50:08,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) 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) [2022-11-16 19:50:08,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 3471 transitions. [2022-11-16 19:50:08,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 19:50:08,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:50:08,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 19:50:08,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 19:50:08,374 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting salethreadErr0ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2022-11-16 19:50:08,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:50:08,374 INFO L85 PathProgramCache]: Analyzing trace with hash 615351858, now seen corresponding path program 1 times [2022-11-16 19:50:08,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:50:08,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013051418] [2022-11-16 19:50:08,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:08,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:50:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:08,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:08,415 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:50:08,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013051418] [2022-11-16 19:50:08,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013051418] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:50:08,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:50:08,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:50:08,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497048299] [2022-11-16 19:50:08,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:50:08,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:50:08,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:50:08,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:50:08,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:50:08,418 INFO L87 Difference]: Start difference. First operand 1260 states and 3471 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:08,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:50:08,501 INFO L93 Difference]: Finished difference Result 1379 states and 3493 transitions. [2022-11-16 19:50:08,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:50:08,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 19:50:08,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:50:08,510 INFO L225 Difference]: With dead ends: 1379 [2022-11-16 19:50:08,510 INFO L226 Difference]: Without dead ends: 1379 [2022-11-16 19:50:08,510 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 [2022-11-16 19:50:08,512 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 29 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:50:08,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 32 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:50:08,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2022-11-16 19:50:08,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1107. [2022-11-16 19:50:08,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 1074 states have (on average 2.793296089385475) internal successors, (3000), 1106 states have internal predecessors, (3000), 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) [2022-11-16 19:50:08,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 3000 transitions. [2022-11-16 19:50:08,560 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 3000 transitions. Word has length 5 [2022-11-16 19:50:08,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:50:08,560 INFO L495 AbstractCegarLoop]: Abstraction has 1107 states and 3000 transitions. [2022-11-16 19:50:08,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:08,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 3000 transitions. [2022-11-16 19:50:08,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 19:50:08,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:50:08,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:50:08,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 19:50:08,566 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting salethreadErr1ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2022-11-16 19:50:08,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:50:08,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1352296963, now seen corresponding path program 1 times [2022-11-16 19:50:08,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:50:08,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505385198] [2022-11-16 19:50:08,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:08,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:50:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:08,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:08,650 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:50:08,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505385198] [2022-11-16 19:50:08,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505385198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:50:08,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:50:08,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:50:08,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210251371] [2022-11-16 19:50:08,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:50:08,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:50:08,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:50:08,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:50:08,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:50:08,652 INFO L87 Difference]: Start difference. First operand 1107 states and 3000 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-16 19:50:08,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:50:08,740 INFO L93 Difference]: Finished difference Result 991 states and 2491 transitions. [2022-11-16 19:50:08,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:50:08,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2022-11-16 19:50:08,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:50:08,745 INFO L225 Difference]: With dead ends: 991 [2022-11-16 19:50:08,746 INFO L226 Difference]: Without dead ends: 879 [2022-11-16 19:50:08,746 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 [2022-11-16 19:50:08,747 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 27 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:50:08,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 32 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:50:08,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2022-11-16 19:50:08,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 823. [2022-11-16 19:50:08,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 799 states have (on average 2.6057571964956194) internal successors, (2082), 822 states have internal predecessors, (2082), 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) [2022-11-16 19:50:08,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 2082 transitions. [2022-11-16 19:50:08,774 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 2082 transitions. Word has length 7 [2022-11-16 19:50:08,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:50:08,775 INFO L495 AbstractCegarLoop]: Abstraction has 823 states and 2082 transitions. [2022-11-16 19:50:08,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-16 19:50:08,775 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 2082 transitions. [2022-11-16 19:50:08,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 19:50:08,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:50:08,777 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-16 19:50:08,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 19:50:08,777 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2022-11-16 19:50:08,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:50:08,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1213738357, now seen corresponding path program 1 times [2022-11-16 19:50:08,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:50:08,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772159372] [2022-11-16 19:50:08,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:08,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:50:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 19:50:08,795 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 19:50:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 19:50:08,810 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-16 19:50:08,811 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 19:50:08,811 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2022-11-16 19:50:08,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2022-11-16 19:50:08,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2022-11-16 19:50:08,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr2ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2022-11-16 19:50:08,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr3ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2022-11-16 19:50:08,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2022-11-16 19:50:08,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2022-11-16 19:50:08,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2022-11-16 19:50:08,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2022-11-16 19:50:08,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2022-11-16 19:50:08,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2022-11-16 19:50:08,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2022-11-16 19:50:08,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr2ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2022-11-16 19:50:08,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr3ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2022-11-16 19:50:08,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2022-11-16 19:50:08,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2022-11-16 19:50:08,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr2ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2022-11-16 19:50:08,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr3ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2022-11-16 19:50:08,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 19:50:08,815 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-16 19:50:08,815 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 19:50:08,816 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-16 19:50:08,834 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 19:50:08,837 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 19:50:08,837 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 128 transitions, 286 flow [2022-11-16 19:50:08,838 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 128 transitions, 286 flow [2022-11-16 19:50:08,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 128 transitions, 286 flow [2022-11-16 19:50:08,972 INFO L130 PetriNetUnfolder]: 34/360 cut-off events. [2022-11-16 19:50:08,972 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-16 19:50:08,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 360 events. 34/360 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1103 event pairs, 1 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 217. Up to 16 conditions per place. [2022-11-16 19:50:08,990 INFO L119 LiptonReduction]: Number of co-enabled transitions 6696 [2022-11-16 19:50:12,414 INFO L134 LiptonReduction]: Checked pairs total: 31753 [2022-11-16 19:50:12,414 INFO L136 LiptonReduction]: Total number of compositions: 129 [2022-11-16 19:50:12,415 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 62 places, 64 transitions, 158 flow [2022-11-16 19:50:13,533 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 29692 states, 28792 states have (on average 4.097804945818283) internal successors, (117984), 29691 states have internal predecessors, (117984), 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) [2022-11-16 19:50:13,534 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 19:50:13,534 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;@5895aede, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 19:50:13,535 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-16 19:50:13,611 INFO L276 IsEmpty]: Start isEmpty. Operand has 29692 states, 28792 states have (on average 4.097804945818283) internal successors, (117984), 29691 states have internal predecessors, (117984), 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) [2022-11-16 19:50:13,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-16 19:50:13,612 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:50:13,612 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-16 19:50:13,612 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-16 19:50:13,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:50:13,614 INFO L85 PathProgramCache]: Analyzing trace with hash 914, now seen corresponding path program 1 times [2022-11-16 19:50:13,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:50:13,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120307451] [2022-11-16 19:50:13,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:13,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:50:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:13,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:13,623 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:50:13,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120307451] [2022-11-16 19:50:13,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120307451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:50:13,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:50:13,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-16 19:50:13,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908800372] [2022-11-16 19:50:13,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:50:13,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 19:50:13,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:50:13,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 19:50:13,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 19:50:13,677 INFO L87 Difference]: Start difference. First operand has 29692 states, 28792 states have (on average 4.097804945818283) internal successors, (117984), 29691 states have internal predecessors, (117984), 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 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-16 19:50:14,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:50:14,221 INFO L93 Difference]: Finished difference Result 16783 states and 65102 transitions. [2022-11-16 19:50:14,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 19:50:14,221 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2022-11-16 19:50:14,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:50:14,497 INFO L225 Difference]: With dead ends: 16783 [2022-11-16 19:50:14,498 INFO L226 Difference]: Without dead ends: 16424 [2022-11-16 19:50:14,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 19:50:14,499 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:50:14,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:50:14,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16424 states. [2022-11-16 19:50:15,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16424 to 16424. [2022-11-16 19:50:15,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16424 states, 16251 states have (on average 3.9100978401329147) internal successors, (63543), 16423 states have internal predecessors, (63543), 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) [2022-11-16 19:50:15,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16424 states to 16424 states and 63543 transitions. [2022-11-16 19:50:15,822 INFO L78 Accepts]: Start accepts. Automaton has 16424 states and 63543 transitions. Word has length 1 [2022-11-16 19:50:15,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:50:15,823 INFO L495 AbstractCegarLoop]: Abstraction has 16424 states and 63543 transitions. [2022-11-16 19:50:15,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-16 19:50:15,823 INFO L276 IsEmpty]: Start isEmpty. Operand 16424 states and 63543 transitions. [2022-11-16 19:50:15,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 19:50:15,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:50:15,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 19:50:15,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 19:50:15,824 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-16 19:50:15,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:50:15,825 INFO L85 PathProgramCache]: Analyzing trace with hash 28304273, now seen corresponding path program 1 times [2022-11-16 19:50:15,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:50:15,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211608046] [2022-11-16 19:50:15,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:15,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:50:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:15,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:15,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:50:15,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211608046] [2022-11-16 19:50:15,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211608046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:50:15,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:50:15,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:50:15,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410155568] [2022-11-16 19:50:15,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:50:15,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:50:15,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:50:15,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:50:15,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:50:15,888 INFO L87 Difference]: Start difference. First operand 16424 states and 63543 transitions. Second operand has 3 states, 3 states have (on average 1.3333333333333333) 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) [2022-11-16 19:50:16,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:50:16,210 INFO L93 Difference]: Finished difference Result 16424 states and 63542 transitions. [2022-11-16 19:50:16,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:50:16,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) 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 [2022-11-16 19:50:16,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:50:16,367 INFO L225 Difference]: With dead ends: 16424 [2022-11-16 19:50:16,367 INFO L226 Difference]: Without dead ends: 16424 [2022-11-16 19:50:16,368 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 [2022-11-16 19:50:16,370 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 13 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:50:16,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 42 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:50:16,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16424 states. [2022-11-16 19:50:17,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16424 to 16424. [2022-11-16 19:50:17,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16424 states, 16251 states have (on average 3.9100363054581257) internal successors, (63542), 16423 states have internal predecessors, (63542), 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) [2022-11-16 19:50:17,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16424 states to 16424 states and 63542 transitions. [2022-11-16 19:50:17,767 INFO L78 Accepts]: Start accepts. Automaton has 16424 states and 63542 transitions. Word has length 4 [2022-11-16 19:50:17,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:50:17,768 INFO L495 AbstractCegarLoop]: Abstraction has 16424 states and 63542 transitions. [2022-11-16 19:50:17,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) 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) [2022-11-16 19:50:17,768 INFO L276 IsEmpty]: Start isEmpty. Operand 16424 states and 63542 transitions. [2022-11-16 19:50:17,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 19:50:17,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:50:17,770 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 19:50:17,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 19:50:17,770 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting salethreadErr0ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-16 19:50:17,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:50:17,774 INFO L85 PathProgramCache]: Analyzing trace with hash 878755107, now seen corresponding path program 1 times [2022-11-16 19:50:17,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:50:17,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988037879] [2022-11-16 19:50:17,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:17,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:50:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:17,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:17,840 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:50:17,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988037879] [2022-11-16 19:50:17,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988037879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:50:17,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:50:17,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:50:17,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228299583] [2022-11-16 19:50:17,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:50:17,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:50:17,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:50:17,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:50:17,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:50:17,843 INFO L87 Difference]: Start difference. First operand 16424 states and 63542 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:18,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:50:18,188 INFO L93 Difference]: Finished difference Result 19618 states and 68953 transitions. [2022-11-16 19:50:18,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:50:18,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 19:50:18,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:50:18,319 INFO L225 Difference]: With dead ends: 19618 [2022-11-16 19:50:18,320 INFO L226 Difference]: Without dead ends: 19618 [2022-11-16 19:50:18,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:50:18,322 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 42 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:50:18,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 37 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:50:18,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19618 states. [2022-11-16 19:50:18,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19618 to 14734. [2022-11-16 19:50:18,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14734 states, 14589 states have (on average 3.8263760367400095) internal successors, (55823), 14733 states have internal predecessors, (55823), 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) [2022-11-16 19:50:19,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14734 states to 14734 states and 55823 transitions. [2022-11-16 19:50:19,156 INFO L78 Accepts]: Start accepts. Automaton has 14734 states and 55823 transitions. Word has length 5 [2022-11-16 19:50:19,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:50:19,157 INFO L495 AbstractCegarLoop]: Abstraction has 14734 states and 55823 transitions. [2022-11-16 19:50:19,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:19,158 INFO L276 IsEmpty]: Start isEmpty. Operand 14734 states and 55823 transitions. [2022-11-16 19:50:19,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 19:50:19,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:50:19,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:50:19,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 19:50:19,159 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting salethreadErr1ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-16 19:50:19,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:50:19,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1624821795, now seen corresponding path program 1 times [2022-11-16 19:50:19,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:50:19,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272722625] [2022-11-16 19:50:19,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:19,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:50:19,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:19,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:19,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:50:19,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272722625] [2022-11-16 19:50:19,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272722625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:50:19,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:50:19,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:50:19,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709794491] [2022-11-16 19:50:19,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:50:19,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:50:19,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:50:19,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:50:19,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:50:19,224 INFO L87 Difference]: Start difference. First operand 14734 states and 55823 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-16 19:50:19,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:50:19,418 INFO L93 Difference]: Finished difference Result 15472 states and 53563 transitions. [2022-11-16 19:50:19,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:50:19,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2022-11-16 19:50:19,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:50:19,480 INFO L225 Difference]: With dead ends: 15472 [2022-11-16 19:50:19,480 INFO L226 Difference]: Without dead ends: 14729 [2022-11-16 19:50:19,480 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 [2022-11-16 19:50:19,481 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 40 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:50:19,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 38 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:50:19,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14729 states. [2022-11-16 19:50:19,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14729 to 12153. [2022-11-16 19:50:19,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12153 states, 12053 states have (on average 3.5635941259437485) internal successors, (42952), 12152 states have internal predecessors, (42952), 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) [2022-11-16 19:50:20,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12153 states to 12153 states and 42952 transitions. [2022-11-16 19:50:20,170 INFO L78 Accepts]: Start accepts. Automaton has 12153 states and 42952 transitions. Word has length 7 [2022-11-16 19:50:20,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:50:20,170 INFO L495 AbstractCegarLoop]: Abstraction has 12153 states and 42952 transitions. [2022-11-16 19:50:20,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-16 19:50:20,172 INFO L276 IsEmpty]: Start isEmpty. Operand 12153 states and 42952 transitions. [2022-11-16 19:50:20,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 19:50:20,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:50:20,181 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:50:20,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 19:50:20,182 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-16 19:50:20,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:50:20,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1513641816, now seen corresponding path program 1 times [2022-11-16 19:50:20,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:50:20,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761398829] [2022-11-16 19:50:20,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:20,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:50:20,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:20,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:20,261 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:50:20,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761398829] [2022-11-16 19:50:20,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761398829] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:50:20,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609846329] [2022-11-16 19:50:20,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:20,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:50:20,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ec2056-40b0-408e-aa76-765a70b5a9e7/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:50:20,266 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ec2056-40b0-408e-aa76-765a70b5a9e7/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:50:20,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ec2056-40b0-408e-aa76-765a70b5a9e7/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 19:50:20,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:20,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 19:50:20,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:50:20,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 19:50:20,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:50:20,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609846329] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:50:20,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 19:50:20,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-16 19:50:20,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468179254] [2022-11-16 19:50:20,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:50:20,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:50:20,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:50:20,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:50:20,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:50:20,401 INFO L87 Difference]: Start difference. First operand 12153 states and 42952 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-11-16 19:50:20,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:50:20,575 INFO L93 Difference]: Finished difference Result 9513 states and 33230 transitions. [2022-11-16 19:50:20,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:50:20,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2022-11-16 19:50:20,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:50:20,622 INFO L225 Difference]: With dead ends: 9513 [2022-11-16 19:50:20,622 INFO L226 Difference]: Without dead ends: 9507 [2022-11-16 19:50:20,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:50:20,623 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 35 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:50:20,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 58 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:50:20,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9507 states. [2022-11-16 19:50:20,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9507 to 9393. [2022-11-16 19:50:20,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9393 states, 9320 states have (on average 3.538841201716738) internal successors, (32982), 9392 states have internal predecessors, (32982), 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) [2022-11-16 19:50:20,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9393 states to 9393 states and 32982 transitions. [2022-11-16 19:50:20,977 INFO L78 Accepts]: Start accepts. Automaton has 9393 states and 32982 transitions. Word has length 14 [2022-11-16 19:50:20,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:50:20,978 INFO L495 AbstractCegarLoop]: Abstraction has 9393 states and 32982 transitions. [2022-11-16 19:50:20,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-11-16 19:50:20,978 INFO L276 IsEmpty]: Start isEmpty. Operand 9393 states and 32982 transitions. [2022-11-16 19:50:20,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 19:50:20,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:50:20,981 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:50:20,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ec2056-40b0-408e-aa76-765a70b5a9e7/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 19:50:21,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ec2056-40b0-408e-aa76-765a70b5a9e7/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 19:50:21,192 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting salethreadErr0ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-16 19:50:21,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:50:21,192 INFO L85 PathProgramCache]: Analyzing trace with hash -840892121, now seen corresponding path program 1 times [2022-11-16 19:50:21,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:50:21,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758934545] [2022-11-16 19:50:21,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:21,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:50:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:21,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 19:50:21,319 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:50:21,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758934545] [2022-11-16 19:50:21,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758934545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:50:21,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:50:21,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:50:21,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754149889] [2022-11-16 19:50:21,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:50:21,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 19:50:21,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:50:21,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 19:50:21,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 19:50:21,321 INFO L87 Difference]: Start difference. First operand 9393 states and 32982 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2022-11-16 19:50:21,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:50:21,622 INFO L93 Difference]: Finished difference Result 11136 states and 34673 transitions. [2022-11-16 19:50:21,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 19:50:21,623 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 15 [2022-11-16 19:50:21,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:50:21,666 INFO L225 Difference]: With dead ends: 11136 [2022-11-16 19:50:21,666 INFO L226 Difference]: Without dead ends: 11118 [2022-11-16 19:50:21,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 19:50:21,667 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 231 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:50:21,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 77 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:50:21,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11118 states. [2022-11-16 19:50:22,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11118 to 8632. [2022-11-16 19:50:22,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8632 states, 8578 states have (on average 3.3556773140592213) internal successors, (28785), 8631 states have internal predecessors, (28785), 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) [2022-11-16 19:50:22,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8632 states to 8632 states and 28785 transitions. [2022-11-16 19:50:22,171 INFO L78 Accepts]: Start accepts. Automaton has 8632 states and 28785 transitions. Word has length 15 [2022-11-16 19:50:22,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:50:22,172 INFO L495 AbstractCegarLoop]: Abstraction has 8632 states and 28785 transitions. [2022-11-16 19:50:22,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2022-11-16 19:50:22,173 INFO L276 IsEmpty]: Start isEmpty. Operand 8632 states and 28785 transitions. [2022-11-16 19:50:22,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 19:50:22,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:50:22,174 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-11-16 19:50:22,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 19:50:22,176 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-16 19:50:22,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:50:22,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1756464727, now seen corresponding path program 1 times [2022-11-16 19:50:22,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:50:22,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574758408] [2022-11-16 19:50:22,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:22,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:50:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 19:50:22,196 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 19:50:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 19:50:22,209 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-16 19:50:22,209 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 19:50:22,210 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-11-16 19:50:22,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-11-16 19:50:22,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-11-16 19:50:22,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-11-16 19:50:22,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-11-16 19:50:22,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-11-16 19:50:22,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-11-16 19:50:22,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-11-16 19:50:22,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-11-16 19:50:22,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-11-16 19:50:22,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-11-16 19:50:22,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-11-16 19:50:22,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr2ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-11-16 19:50:22,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr3ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-11-16 19:50:22,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-11-16 19:50:22,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-11-16 19:50:22,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr2ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-11-16 19:50:22,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr3ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-11-16 19:50:22,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-11-16 19:50:22,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-11-16 19:50:22,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr2ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-11-16 19:50:22,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-11-16 19:50:22,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 19:50:22,215 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:50:22,215 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 19:50:22,215 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-16 19:50:22,235 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-16 19:50:22,237 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 19:50:22,237 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 142 places, 148 transitions, 340 flow [2022-11-16 19:50:22,238 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 142 places, 148 transitions, 340 flow [2022-11-16 19:50:22,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 148 transitions, 340 flow [2022-11-16 19:50:22,348 INFO L130 PetriNetUnfolder]: 66/635 cut-off events. [2022-11-16 19:50:22,349 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-16 19:50:22,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 690 conditions, 635 events. 66/635 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2520 event pairs, 6 based on Foata normal form. 0/518 useless extension candidates. Maximal degree in co-relation 380. Up to 32 conditions per place. [2022-11-16 19:50:22,374 INFO L119 LiptonReduction]: Number of co-enabled transitions 10440 [2022-11-16 19:50:26,159 INFO L134 LiptonReduction]: Checked pairs total: 50161 [2022-11-16 19:50:26,159 INFO L136 LiptonReduction]: Total number of compositions: 152 [2022-11-16 19:50:26,160 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 75 places, 76 transitions, 196 flow [2022-11-16 19:50:37,608 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 352330 states, 347190 states have (on average 4.913882888332037) internal successors, (1706051), 352329 states have internal predecessors, (1706051), 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) [2022-11-16 19:50:37,633 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 19:50:37,634 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;@5895aede, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 19:50:37,634 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-16 19:50:38,119 INFO L276 IsEmpty]: Start isEmpty. Operand has 352330 states, 347190 states have (on average 4.913882888332037) internal successors, (1706051), 352329 states have internal predecessors, (1706051), 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) [2022-11-16 19:50:38,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-16 19:50:38,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:50:38,120 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-16 19:50:38,120 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-16 19:50:38,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:50:38,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1242, now seen corresponding path program 1 times [2022-11-16 19:50:38,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:50:38,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911917549] [2022-11-16 19:50:38,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:38,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:50:38,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:38,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:38,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:50:38,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911917549] [2022-11-16 19:50:38,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911917549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:50:38,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:50:38,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-16 19:50:38,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233048811] [2022-11-16 19:50:38,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:50:38,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 19:50:38,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:50:38,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 19:50:38,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 19:50:38,586 INFO L87 Difference]: Start difference. First operand has 352330 states, 347190 states have (on average 4.913882888332037) internal successors, (1706051), 352329 states have internal predecessors, (1706051), 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 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-16 19:50:42,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:50:42,510 INFO L93 Difference]: Finished difference Result 165617 states and 782239 transitions. [2022-11-16 19:50:42,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 19:50:42,515 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2022-11-16 19:50:42,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:50:44,796 INFO L225 Difference]: With dead ends: 165617 [2022-11-16 19:50:44,796 INFO L226 Difference]: Without dead ends: 164118 [2022-11-16 19:50:44,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 19:50:44,797 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:50:44,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:50:45,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164118 states. [2022-11-16 19:50:50,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164118 to 164118. [2022-11-16 19:50:51,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164118 states, 163461 states have (on average 4.738072078355081) internal successors, (774490), 164117 states have internal predecessors, (774490), 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) [2022-11-16 19:50:53,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164118 states to 164118 states and 774490 transitions. [2022-11-16 19:50:53,409 INFO L78 Accepts]: Start accepts. Automaton has 164118 states and 774490 transitions. Word has length 1 [2022-11-16 19:50:53,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:50:53,409 INFO L495 AbstractCegarLoop]: Abstraction has 164118 states and 774490 transitions. [2022-11-16 19:50:53,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-16 19:50:53,409 INFO L276 IsEmpty]: Start isEmpty. Operand 164118 states and 774490 transitions. [2022-11-16 19:50:53,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 19:50:53,410 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:50:53,410 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 19:50:53,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 19:50:53,410 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-16 19:50:53,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:50:53,411 INFO L85 PathProgramCache]: Analyzing trace with hash 38081609, now seen corresponding path program 1 times [2022-11-16 19:50:53,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:50:53,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947805479] [2022-11-16 19:50:53,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:53,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:50:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:53,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:53,452 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:50:53,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947805479] [2022-11-16 19:50:53,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947805479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:50:53,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:50:53,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:50:53,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789798014] [2022-11-16 19:50:53,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:50:53,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:50:53,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:50:53,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:50:53,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:50:53,454 INFO L87 Difference]: Start difference. First operand 164118 states and 774490 transitions. Second operand has 3 states, 3 states have (on average 1.3333333333333333) 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) [2022-11-16 19:50:56,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:50:56,803 INFO L93 Difference]: Finished difference Result 164118 states and 774489 transitions. [2022-11-16 19:50:56,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:50:56,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) 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 [2022-11-16 19:50:56,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:50:58,147 INFO L225 Difference]: With dead ends: 164118 [2022-11-16 19:50:58,147 INFO L226 Difference]: Without dead ends: 164118 [2022-11-16 19:50:58,148 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 [2022-11-16 19:50:58,148 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 13 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:50:58,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 56 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:50:58,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164118 states.