./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 8393723b 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_31b517a0-ccff-48c0-b89e-c8ef305ea028/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b517a0-ccff-48c0-b89e-c8ef305ea028/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b517a0-ccff-48c0-b89e-c8ef305ea028/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b517a0-ccff-48c0-b89e-c8ef305ea028/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-deagle/airline-25.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b517a0-ccff-48c0-b89e-c8ef305ea028/bin/utaipan-I9t0OCRTmS/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b517a0-ccff-48c0-b89e-c8ef305ea028/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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-8393723 [2022-11-19 07:03:43,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:03:43,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:03:43,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:03:43,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:03:43,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:03:43,635 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:03:43,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:03:43,638 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:03:43,639 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:03:43,640 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:03:43,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:03:43,642 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:03:43,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:03:43,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:03:43,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:03:43,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:03:43,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:03:43,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:03:43,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:03:43,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:03:43,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:03:43,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:03:43,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:03:43,673 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:03:43,679 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:03:43,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:03:43,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:03:43,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:03:43,683 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:03:43,684 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:03:43,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:03:43,686 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:03:43,687 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:03:43,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:03:43,690 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:03:43,691 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:03:43,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:03:43,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:03:43,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:03:43,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:03:43,694 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b517a0-ccff-48c0-b89e-c8ef305ea028/bin/utaipan-I9t0OCRTmS/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-19 07:03:43,731 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:03:43,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:03:43,732 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:03:43,733 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:03:43,734 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:03:43,734 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:03:43,734 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:03:43,734 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:03:43,734 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:03:43,735 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:03:43,736 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:03:43,736 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:03:43,736 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:03:43,736 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:03:43,737 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:03:43,737 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:03:43,737 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:03:43,737 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:03:43,738 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:03:43,738 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:03:43,738 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 07:03:43,739 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:03:43,739 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:03:43,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:03:43,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:03:43,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:03:43,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:03:43,741 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-19 07:03:43,742 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:03:43,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:03:43,742 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:03:43,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:03:43,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:03:43,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:03:43,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:03:43,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:03:43,743 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:03:43,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:03:43,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:03:43,744 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:03:43,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:03:43,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:03:43,745 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:03:43,745 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_31b517a0-ccff-48c0-b89e-c8ef305ea028/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b517a0-ccff-48c0-b89e-c8ef305ea028/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0d81069750f24e52e04bdb7efecd6d77b64aec41e058c154f75fbba11e6c11d [2022-11-19 07:03:44,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:03:44,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:03:44,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:03:44,129 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:03:44,130 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:03:44,132 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b517a0-ccff-48c0-b89e-c8ef305ea028/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/pthread-deagle/airline-25.i [2022-11-19 07:03:44,209 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b517a0-ccff-48c0-b89e-c8ef305ea028/bin/utaipan-I9t0OCRTmS/data/cd56bf5ef/05f9268d36554403b071c24ffb9c95ec/FLAG4ac11eef8 [2022-11-19 07:03:44,873 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:03:44,873 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b517a0-ccff-48c0-b89e-c8ef305ea028/sv-benchmarks/c/pthread-deagle/airline-25.i [2022-11-19 07:03:44,888 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b517a0-ccff-48c0-b89e-c8ef305ea028/bin/utaipan-I9t0OCRTmS/data/cd56bf5ef/05f9268d36554403b071c24ffb9c95ec/FLAG4ac11eef8 [2022-11-19 07:03:45,129 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b517a0-ccff-48c0-b89e-c8ef305ea028/bin/utaipan-I9t0OCRTmS/data/cd56bf5ef/05f9268d36554403b071c24ffb9c95ec [2022-11-19 07:03:45,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:03:45,134 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:03:45,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:03:45,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:03:45,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:03:45,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:03:45" (1/1) ... [2022-11-19 07:03:45,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53e3d61b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:45, skipping insertion in model container [2022-11-19 07:03:45,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:03:45" (1/1) ... [2022-11-19 07:03:45,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:03:45,225 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:03:45,638 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b517a0-ccff-48c0-b89e-c8ef305ea028/sv-benchmarks/c/pthread-deagle/airline-25.i[32101,32114] [2022-11-19 07:03:45,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:03:45,649 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:03:45,736 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b517a0-ccff-48c0-b89e-c8ef305ea028/sv-benchmarks/c/pthread-deagle/airline-25.i[32101,32114] [2022-11-19 07:03:45,742 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:03:45,790 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:03:45,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:45 WrapperNode [2022-11-19 07:03:45,791 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:03:45,792 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:03:45,792 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:03:45,793 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:03:45,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:45" (1/1) ... [2022-11-19 07:03:45,830 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:45" (1/1) ... [2022-11-19 07:03:45,859 INFO L138 Inliner]: procedures = 162, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80 [2022-11-19 07:03:45,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:03:45,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:03:45,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:03:45,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:03:45,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:45" (1/1) ... [2022-11-19 07:03:45,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:45" (1/1) ... [2022-11-19 07:03:45,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:45" (1/1) ... [2022-11-19 07:03:45,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:45" (1/1) ... [2022-11-19 07:03:45,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:45" (1/1) ... [2022-11-19 07:03:45,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:45" (1/1) ... [2022-11-19 07:03:45,889 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:45" (1/1) ... [2022-11-19 07:03:45,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:45" (1/1) ... [2022-11-19 07:03:45,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:03:45,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:03:45,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:03:45,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:03:45,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:45" (1/1) ... [2022-11-19 07:03:45,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:03:45,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b517a0-ccff-48c0-b89e-c8ef305ea028/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:03:45,952 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b517a0-ccff-48c0-b89e-c8ef305ea028/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:03:45,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b517a0-ccff-48c0-b89e-c8ef305ea028/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:03:45,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:03:45,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:03:45,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-19 07:03:45,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:03:45,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:03:45,999 INFO L130 BoogieDeclarations]: Found specification of procedure salethread [2022-11-19 07:03:45,999 INFO L138 BoogieDeclarations]: Found implementation of procedure salethread [2022-11-19 07:03:45,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:03:45,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:03:46,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-19 07:03:46,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:03:46,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:03:46,002 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-19 07:03:46,212 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:03:46,214 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:03:46,580 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:03:46,630 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:03:46,631 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 07:03:46,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:03:46 BoogieIcfgContainer [2022-11-19 07:03:46,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:03:46,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:03:46,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:03:46,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:03:46,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:03:45" (1/3) ... [2022-11-19 07:03:46,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b729671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:03:46, skipping insertion in model container [2022-11-19 07:03:46,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:45" (2/3) ... [2022-11-19 07:03:46,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b729671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:03:46, skipping insertion in model container [2022-11-19 07:03:46,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:03:46" (3/3) ... [2022-11-19 07:03:46,646 INFO L112 eAbstractionObserver]: Analyzing ICFG airline-25.i [2022-11-19 07:03:46,657 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-19 07:03:46,670 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:03:46,670 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2022-11-19 07:03:46,671 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-19 07:03:46,765 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-19 07:03:46,821 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 07:03:46,838 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 88 transitions, 184 flow [2022-11-19 07:03:46,841 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 88 transitions, 184 flow [2022-11-19 07:03:46,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 88 transitions, 184 flow [2022-11-19 07:03:46,901 INFO L130 PetriNetUnfolder]: 9/119 cut-off events. [2022-11-19 07:03:46,901 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-19 07:03:46,907 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. [2022-11-19 07:03:46,910 INFO L119 LiptonReduction]: Number of co-enabled transitions 1332 [2022-11-19 07:03:50,420 INFO L134 LiptonReduction]: Checked pairs total: 2155 [2022-11-19 07:03:50,420 INFO L136 LiptonReduction]: Total number of compositions: 101 [2022-11-19 07:03:50,430 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 24 transitions, 56 flow [2022-11-19 07:03:50,451 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) [2022-11-19 07:03:50,471 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:03:50,478 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;@70ca472f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:03:50,478 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-11-19 07:03:50,481 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) [2022-11-19 07:03:50,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-19 07:03:50,486 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:03:50,487 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-19 07:03:50,487 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2022-11-19 07:03:50,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:03:50,493 INFO L85 PathProgramCache]: Analyzing trace with hash 399, now seen corresponding path program 1 times [2022-11-19 07:03:50,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:03:50,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763390814] [2022-11-19 07:03:50,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:03:50,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:03:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:03:50,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:03:50,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:03:50,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763390814] [2022-11-19 07:03:50,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763390814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:03:50,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:03:50,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-19 07:03:50,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208020576] [2022-11-19 07:03:50,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:03:50,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:03:50,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:03:50,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:03:50,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:03:50,662 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) [2022-11-19 07:03:50,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:03:50,707 INFO L93 Difference]: Finished difference Result 31 states and 53 transitions. [2022-11-19 07:03:50,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:03:50,716 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 [2022-11-19 07:03:50,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:03:50,724 INFO L225 Difference]: With dead ends: 31 [2022-11-19 07:03:50,725 INFO L226 Difference]: Without dead ends: 15 [2022-11-19 07:03:50,726 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 [2022-11-19 07:03:50,731 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 [2022-11-19 07:03:50,732 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] [2022-11-19 07:03:50,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-19 07:03:50,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-19 07:03:50,769 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) [2022-11-19 07:03:50,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 24 transitions. [2022-11-19 07:03:50,771 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 24 transitions. Word has length 1 [2022-11-19 07:03:50,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:03:50,772 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 24 transitions. [2022-11-19 07:03:50,776 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) [2022-11-19 07:03:50,778 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 24 transitions. [2022-11-19 07:03:50,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 07:03:50,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:03:50,779 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-19 07:03:50,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:03:50,780 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2022-11-19 07:03:50,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:03:50,782 INFO L85 PathProgramCache]: Analyzing trace with hash -986152956, now seen corresponding path program 1 times [2022-11-19 07:03:50,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:03:50,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241276116] [2022-11-19 07:03:50,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:03:50,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:03:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:03:50,856 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:03:50,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:03:50,932 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:03:50,935 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:03:50,937 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2022-11-19 07:03:50,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2022-11-19 07:03:50,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2022-11-19 07:03:50,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr2ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2022-11-19 07:03:50,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr3ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2022-11-19 07:03:50,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2022-11-19 07:03:50,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2022-11-19 07:03:50,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2022-11-19 07:03:50,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2022-11-19 07:03:50,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2022-11-19 07:03:50,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2022-11-19 07:03:50,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2022-11-19 07:03:50,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr2ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2022-11-19 07:03:50,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr3ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2022-11-19 07:03:50,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:03:50,962 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-19 07:03:50,964 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-19 07:03:50,965 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-19 07:03:50,998 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-19 07:03:51,001 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 07:03:51,002 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 108 transitions, 234 flow [2022-11-19 07:03:51,002 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 108 transitions, 234 flow [2022-11-19 07:03:51,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 108 transitions, 234 flow [2022-11-19 07:03:51,067 INFO L130 PetriNetUnfolder]: 18/209 cut-off events. [2022-11-19 07:03:51,067 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-19 07:03:51,070 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. [2022-11-19 07:03:51,074 INFO L119 LiptonReduction]: Number of co-enabled transitions 3708 [2022-11-19 07:03:54,516 INFO L134 LiptonReduction]: Checked pairs total: 13834 [2022-11-19 07:03:54,517 INFO L136 LiptonReduction]: Total number of compositions: 115 [2022-11-19 07:03:54,518 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 46 transitions, 110 flow [2022-11-19 07:03:54,624 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) [2022-11-19 07:03:54,625 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:03:54,626 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;@70ca472f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:03:54,626 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-19 07:03:54,632 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) [2022-11-19 07:03:54,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-19 07:03:54,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:03:54,632 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-19 07:03:54,633 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2022-11-19 07:03:54,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:03:54,633 INFO L85 PathProgramCache]: Analyzing trace with hash 640, now seen corresponding path program 1 times [2022-11-19 07:03:54,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:03:54,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541305723] [2022-11-19 07:03:54,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:03:54,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:03:54,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:03:54,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:03:54,646 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:03:54,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541305723] [2022-11-19 07:03:54,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541305723] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:03:54,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:03:54,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-19 07:03:54,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391694827] [2022-11-19 07:03:54,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:03:54,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:03:54,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:03:54,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:03:54,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:03:54,655 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) [2022-11-19 07:03:54,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:03:54,764 INFO L93 Difference]: Finished difference Result 1309 states and 3621 transitions. [2022-11-19 07:03:54,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:03:54,764 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 [2022-11-19 07:03:54,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:03:54,787 INFO L225 Difference]: With dead ends: 1309 [2022-11-19 07:03:54,787 INFO L226 Difference]: Without dead ends: 1260 [2022-11-19 07:03:54,788 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 [2022-11-19 07:03:54,789 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:03:54,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:03:54,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2022-11-19 07:03:54,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1260. [2022-11-19 07:03:54,952 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) [2022-11-19 07:03:54,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 3472 transitions. [2022-11-19 07:03:54,970 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 3472 transitions. Word has length 1 [2022-11-19 07:03:54,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:03:54,971 INFO L495 AbstractCegarLoop]: Abstraction has 1260 states and 3472 transitions. [2022-11-19 07:03:54,971 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) [2022-11-19 07:03:54,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 3472 transitions. [2022-11-19 07:03:54,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 07:03:54,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:03:54,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 07:03:54,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:03:54,973 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2022-11-19 07:03:54,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:03:54,974 INFO L85 PathProgramCache]: Analyzing trace with hash 19813843, now seen corresponding path program 1 times [2022-11-19 07:03:54,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:03:54,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750897133] [2022-11-19 07:03:54,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:03:54,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:03:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:03:55,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:03:55,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:03:55,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750897133] [2022-11-19 07:03:55,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750897133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:03:55,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:03:55,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:03:55,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529416168] [2022-11-19 07:03:55,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:03:55,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:03:55,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:03:55,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:03:55,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:03:55,088 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) [2022-11-19 07:03:55,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:03:55,170 INFO L93 Difference]: Finished difference Result 1260 states and 3471 transitions. [2022-11-19 07:03:55,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:03:55,171 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 [2022-11-19 07:03:55,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:03:55,185 INFO L225 Difference]: With dead ends: 1260 [2022-11-19 07:03:55,185 INFO L226 Difference]: Without dead ends: 1260 [2022-11-19 07:03:55,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:03:55,196 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 [2022-11-19 07:03:55,196 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] [2022-11-19 07:03:55,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2022-11-19 07:03:55,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1260. [2022-11-19 07:03:55,257 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) [2022-11-19 07:03:55,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 3471 transitions. [2022-11-19 07:03:55,266 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 3471 transitions. Word has length 4 [2022-11-19 07:03:55,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:03:55,266 INFO L495 AbstractCegarLoop]: Abstraction has 1260 states and 3471 transitions. [2022-11-19 07:03:55,266 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) [2022-11-19 07:03:55,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 3471 transitions. [2022-11-19 07:03:55,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 07:03:55,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:03:55,273 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 07:03:55,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:03:55,274 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting salethreadErr0ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2022-11-19 07:03:55,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:03:55,275 INFO L85 PathProgramCache]: Analyzing trace with hash 615351858, now seen corresponding path program 1 times [2022-11-19 07:03:55,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:03:55,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692410491] [2022-11-19 07:03:55,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:03:55,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:03:55,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:03:55,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:03:55,386 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:03:55,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692410491] [2022-11-19 07:03:55,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692410491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:03:55,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:03:55,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:03:55,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669564218] [2022-11-19 07:03:55,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:03:55,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:03:55,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:03:55,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:03:55,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:03:55,388 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) [2022-11-19 07:03:55,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:03:55,485 INFO L93 Difference]: Finished difference Result 1379 states and 3493 transitions. [2022-11-19 07:03:55,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:03:55,486 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 [2022-11-19 07:03:55,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:03:55,495 INFO L225 Difference]: With dead ends: 1379 [2022-11-19 07:03:55,495 INFO L226 Difference]: Without dead ends: 1379 [2022-11-19 07:03:55,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:03:55,497 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 29 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-11-19 07:03:55,500 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] [2022-11-19 07:03:55,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2022-11-19 07:03:55,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1107. [2022-11-19 07:03:55,544 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) [2022-11-19 07:03:55,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 3000 transitions. [2022-11-19 07:03:55,551 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 3000 transitions. Word has length 5 [2022-11-19 07:03:55,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:03:55,551 INFO L495 AbstractCegarLoop]: Abstraction has 1107 states and 3000 transitions. [2022-11-19 07:03:55,554 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) [2022-11-19 07:03:55,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 3000 transitions. [2022-11-19 07:03:55,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 07:03:55,556 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:03:55,556 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:03:55,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:03:55,557 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting salethreadErr1ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2022-11-19 07:03:55,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:03:55,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1352296963, now seen corresponding path program 1 times [2022-11-19 07:03:55,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:03:55,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219402382] [2022-11-19 07:03:55,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:03:55,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:03:55,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:03:55,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:03:55,634 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:03:55,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219402382] [2022-11-19 07:03:55,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219402382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:03:55,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:03:55,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:03:55,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151729910] [2022-11-19 07:03:55,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:03:55,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:03:55,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:03:55,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:03:55,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:03:55,638 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) [2022-11-19 07:03:55,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:03:55,759 INFO L93 Difference]: Finished difference Result 991 states and 2491 transitions. [2022-11-19 07:03:55,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:03:55,760 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 [2022-11-19 07:03:55,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:03:55,766 INFO L225 Difference]: With dead ends: 991 [2022-11-19 07:03:55,766 INFO L226 Difference]: Without dead ends: 879 [2022-11-19 07:03:55,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:03:55,771 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 [2022-11-19 07:03:55,772 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] [2022-11-19 07:03:55,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2022-11-19 07:03:55,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 823. [2022-11-19 07:03:55,800 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) [2022-11-19 07:03:55,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 2082 transitions. [2022-11-19 07:03:55,804 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 2082 transitions. Word has length 7 [2022-11-19 07:03:55,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:03:55,805 INFO L495 AbstractCegarLoop]: Abstraction has 823 states and 2082 transitions. [2022-11-19 07:03:55,806 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) [2022-11-19 07:03:55,806 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 2082 transitions. [2022-11-19 07:03:55,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 07:03:55,808 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:03:55,809 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-19 07:03:55,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:03:55,810 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2022-11-19 07:03:55,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:03:55,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1213738357, now seen corresponding path program 1 times [2022-11-19 07:03:55,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:03:55,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121475695] [2022-11-19 07:03:55,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:03:55,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:03:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:03:55,846 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:03:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:03:55,878 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:03:55,879 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:03:55,879 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2022-11-19 07:03:55,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2022-11-19 07:03:55,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2022-11-19 07:03:55,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr2ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2022-11-19 07:03:55,881 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr3ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2022-11-19 07:03:55,881 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2022-11-19 07:03:55,881 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2022-11-19 07:03:55,881 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2022-11-19 07:03:55,882 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2022-11-19 07:03:55,882 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2022-11-19 07:03:55,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2022-11-19 07:03:55,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2022-11-19 07:03:55,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr2ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2022-11-19 07:03:55,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr3ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2022-11-19 07:03:55,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2022-11-19 07:03:55,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2022-11-19 07:03:55,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr2ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2022-11-19 07:03:55,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr3ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2022-11-19 07:03:55,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:03:55,887 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-19 07:03:55,888 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-19 07:03:55,888 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-19 07:03:55,923 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-19 07:03:55,925 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 07:03:55,925 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 128 transitions, 286 flow [2022-11-19 07:03:55,925 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 128 transitions, 286 flow [2022-11-19 07:03:55,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 128 transitions, 286 flow [2022-11-19 07:03:56,038 INFO L130 PetriNetUnfolder]: 34/360 cut-off events. [2022-11-19 07:03:56,038 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-19 07:03:56,043 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. [2022-11-19 07:03:56,052 INFO L119 LiptonReduction]: Number of co-enabled transitions 6696 [2022-11-19 07:04:00,224 INFO L134 LiptonReduction]: Checked pairs total: 31753 [2022-11-19 07:04:00,225 INFO L136 LiptonReduction]: Total number of compositions: 129 [2022-11-19 07:04:00,226 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 62 places, 64 transitions, 158 flow [2022-11-19 07:04:01,749 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) [2022-11-19 07:04:01,758 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:04:01,760 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;@70ca472f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:04:01,760 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-19 07:04:01,838 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) [2022-11-19 07:04:01,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-19 07:04:01,839 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:01,839 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-19 07:04:01,840 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-19 07:04:01,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:01,841 INFO L85 PathProgramCache]: Analyzing trace with hash 914, now seen corresponding path program 1 times [2022-11-19 07:04:01,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:04:01,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065285198] [2022-11-19 07:04:01,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:01,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:04:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:01,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:04:01,854 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:04:01,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065285198] [2022-11-19 07:04:01,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065285198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:04:01,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:04:01,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-19 07:04:01,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568988832] [2022-11-19 07:04:01,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:04:01,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:04:01,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:04:01,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:04:01,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:04:01,914 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) [2022-11-19 07:04:02,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:04:02,765 INFO L93 Difference]: Finished difference Result 16783 states and 65102 transitions. [2022-11-19 07:04:02,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:04:02,766 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 [2022-11-19 07:04:02,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:04:03,022 INFO L225 Difference]: With dead ends: 16783 [2022-11-19 07:04:03,023 INFO L226 Difference]: Without dead ends: 16424 [2022-11-19 07:04:03,023 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 [2022-11-19 07:04:03,025 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:04:03,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:04:03,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16424 states. [2022-11-19 07:04:04,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16424 to 16424. [2022-11-19 07:04:04,140 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) [2022-11-19 07:04:04,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16424 states to 16424 states and 63543 transitions. [2022-11-19 07:04:04,268 INFO L78 Accepts]: Start accepts. Automaton has 16424 states and 63543 transitions. Word has length 1 [2022-11-19 07:04:04,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:04:04,269 INFO L495 AbstractCegarLoop]: Abstraction has 16424 states and 63543 transitions. [2022-11-19 07:04:04,269 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) [2022-11-19 07:04:04,269 INFO L276 IsEmpty]: Start isEmpty. Operand 16424 states and 63543 transitions. [2022-11-19 07:04:04,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 07:04:04,271 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:04,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 07:04:04,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:04:04,272 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-19 07:04:04,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:04,273 INFO L85 PathProgramCache]: Analyzing trace with hash 28304273, now seen corresponding path program 1 times [2022-11-19 07:04:04,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:04:04,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488612078] [2022-11-19 07:04:04,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:04,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:04:04,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:04,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:04:04,329 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:04:04,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488612078] [2022-11-19 07:04:04,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488612078] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:04:04,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:04:04,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:04:04,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537553709] [2022-11-19 07:04:04,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:04:04,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:04:04,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:04:04,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:04:04,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:04:04,332 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) [2022-11-19 07:04:04,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:04:04,810 INFO L93 Difference]: Finished difference Result 16424 states and 63542 transitions. [2022-11-19 07:04:04,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:04:04,811 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 [2022-11-19 07:04:04,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:04:05,087 INFO L225 Difference]: With dead ends: 16424 [2022-11-19 07:04:05,088 INFO L226 Difference]: Without dead ends: 16424 [2022-11-19 07:04:05,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:04:05,090 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 13 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:04:05,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 42 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:04:05,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16424 states. [2022-11-19 07:04:05,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16424 to 16424. [2022-11-19 07:04:05,912 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) [2022-11-19 07:04:06,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16424 states to 16424 states and 63542 transitions. [2022-11-19 07:04:06,049 INFO L78 Accepts]: Start accepts. Automaton has 16424 states and 63542 transitions. Word has length 4 [2022-11-19 07:04:06,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:04:06,054 INFO L495 AbstractCegarLoop]: Abstraction has 16424 states and 63542 transitions. [2022-11-19 07:04:06,054 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) [2022-11-19 07:04:06,054 INFO L276 IsEmpty]: Start isEmpty. Operand 16424 states and 63542 transitions. [2022-11-19 07:04:06,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 07:04:06,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:06,055 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 07:04:06,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 07:04:06,056 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting salethreadErr0ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-19 07:04:06,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:06,056 INFO L85 PathProgramCache]: Analyzing trace with hash 878755107, now seen corresponding path program 1 times [2022-11-19 07:04:06,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:04:06,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278930469] [2022-11-19 07:04:06,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:06,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:04:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:06,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:04:06,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:04:06,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278930469] [2022-11-19 07:04:06,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278930469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:04:06,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:04:06,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:04:06,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230090957] [2022-11-19 07:04:06,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:04:06,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:04:06,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:04:06,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:04:06,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:04:06,107 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) [2022-11-19 07:04:06,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:04:06,605 INFO L93 Difference]: Finished difference Result 19618 states and 68953 transitions. [2022-11-19 07:04:06,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:04:06,607 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 [2022-11-19 07:04:06,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:04:06,773 INFO L225 Difference]: With dead ends: 19618 [2022-11-19 07:04:06,774 INFO L226 Difference]: Without dead ends: 19618 [2022-11-19 07:04:06,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:04:06,775 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 [2022-11-19 07:04:06,776 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] [2022-11-19 07:04:06,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19618 states. [2022-11-19 07:04:07,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19618 to 14734. [2022-11-19 07:04:07,626 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) [2022-11-19 07:04:07,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14734 states to 14734 states and 55823 transitions. [2022-11-19 07:04:07,747 INFO L78 Accepts]: Start accepts. Automaton has 14734 states and 55823 transitions. Word has length 5 [2022-11-19 07:04:07,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:04:07,748 INFO L495 AbstractCegarLoop]: Abstraction has 14734 states and 55823 transitions. [2022-11-19 07:04:07,748 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) [2022-11-19 07:04:07,748 INFO L276 IsEmpty]: Start isEmpty. Operand 14734 states and 55823 transitions. [2022-11-19 07:04:07,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 07:04:07,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:07,749 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:04:07,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 07:04:07,750 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting salethreadErr1ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-19 07:04:07,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:07,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1624821795, now seen corresponding path program 1 times [2022-11-19 07:04:07,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:04:07,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905165696] [2022-11-19 07:04:07,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:07,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:04:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:07,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:04:07,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:04:07,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905165696] [2022-11-19 07:04:07,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905165696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:04:07,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:04:07,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:04:07,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136655030] [2022-11-19 07:04:07,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:04:07,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:04:07,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:04:07,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:04:07,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:04:07,793 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) [2022-11-19 07:04:08,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:04:08,053 INFO L93 Difference]: Finished difference Result 15472 states and 53563 transitions. [2022-11-19 07:04:08,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:04:08,053 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 [2022-11-19 07:04:08,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:04:08,132 INFO L225 Difference]: With dead ends: 15472 [2022-11-19 07:04:08,132 INFO L226 Difference]: Without dead ends: 14729 [2022-11-19 07:04:08,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:04:08,135 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 [2022-11-19 07:04:08,135 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] [2022-11-19 07:04:08,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14729 states. [2022-11-19 07:04:08,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14729 to 12153. [2022-11-19 07:04:08,831 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) [2022-11-19 07:04:08,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12153 states to 12153 states and 42952 transitions. [2022-11-19 07:04:08,891 INFO L78 Accepts]: Start accepts. Automaton has 12153 states and 42952 transitions. Word has length 7 [2022-11-19 07:04:08,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:04:08,891 INFO L495 AbstractCegarLoop]: Abstraction has 12153 states and 42952 transitions. [2022-11-19 07:04:08,891 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) [2022-11-19 07:04:08,891 INFO L276 IsEmpty]: Start isEmpty. Operand 12153 states and 42952 transitions. [2022-11-19 07:04:08,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 07:04:08,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:08,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:04:08,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 07:04:08,896 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-19 07:04:08,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:08,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1513641816, now seen corresponding path program 1 times [2022-11-19 07:04:08,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:04:08,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352643559] [2022-11-19 07:04:08,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:08,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:04:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:08,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:04:08,968 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:04:08,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352643559] [2022-11-19 07:04:08,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352643559] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:04:08,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715931458] [2022-11-19 07:04:08,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:08,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:04:08,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b517a0-ccff-48c0-b89e-c8ef305ea028/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:04:08,973 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b517a0-ccff-48c0-b89e-c8ef305ea028/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:04:08,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b517a0-ccff-48c0-b89e-c8ef305ea028/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:04:09,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:09,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:04:09,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:04:09,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:04:09,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:04:09,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715931458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:04:09,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:04:09,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-19 07:04:09,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021322395] [2022-11-19 07:04:09,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:04:09,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:04:09,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:04:09,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:04:09,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:04:09,145 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) [2022-11-19 07:04:09,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:04:09,389 INFO L93 Difference]: Finished difference Result 9513 states and 33230 transitions. [2022-11-19 07:04:09,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:04:09,390 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 [2022-11-19 07:04:09,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:04:09,434 INFO L225 Difference]: With dead ends: 9513 [2022-11-19 07:04:09,434 INFO L226 Difference]: Without dead ends: 9507 [2022-11-19 07:04:09,435 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 [2022-11-19 07:04:09,435 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:04:09,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 58 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:04:09,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9507 states. [2022-11-19 07:04:09,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9507 to 9393. [2022-11-19 07:04:09,694 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) [2022-11-19 07:04:10,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9393 states to 9393 states and 32982 transitions. [2022-11-19 07:04:10,014 INFO L78 Accepts]: Start accepts. Automaton has 9393 states and 32982 transitions. Word has length 14 [2022-11-19 07:04:10,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:04:10,014 INFO L495 AbstractCegarLoop]: Abstraction has 9393 states and 32982 transitions. [2022-11-19 07:04:10,014 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) [2022-11-19 07:04:10,015 INFO L276 IsEmpty]: Start isEmpty. Operand 9393 states and 32982 transitions. [2022-11-19 07:04:10,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-19 07:04:10,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:10,017 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:04:10,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b517a0-ccff-48c0-b89e-c8ef305ea028/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:04:10,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31b517a0-ccff-48c0-b89e-c8ef305ea028/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-19 07:04:10,223 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting salethreadErr0ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-19 07:04:10,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:10,224 INFO L85 PathProgramCache]: Analyzing trace with hash -840892121, now seen corresponding path program 1 times [2022-11-19 07:04:10,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:04:10,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465409133] [2022-11-19 07:04:10,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:10,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:04:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:10,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:04:10,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:04:10,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465409133] [2022-11-19 07:04:10,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465409133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:04:10,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:04:10,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:04:10,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187003477] [2022-11-19 07:04:10,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:04:10,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:04:10,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:04:10,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:04:10,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:04:10,378 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) [2022-11-19 07:04:10,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:04:10,710 INFO L93 Difference]: Finished difference Result 11136 states and 34673 transitions. [2022-11-19 07:04:10,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:04:10,711 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 [2022-11-19 07:04:10,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:04:10,755 INFO L225 Difference]: With dead ends: 11136 [2022-11-19 07:04:10,755 INFO L226 Difference]: Without dead ends: 11118 [2022-11-19 07:04:10,756 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 [2022-11-19 07:04:10,756 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 [2022-11-19 07:04:10,757 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] [2022-11-19 07:04:10,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11118 states. [2022-11-19 07:04:11,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11118 to 8632. [2022-11-19 07:04:11,091 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) [2022-11-19 07:04:11,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8632 states to 8632 states and 28785 transitions. [2022-11-19 07:04:11,129 INFO L78 Accepts]: Start accepts. Automaton has 8632 states and 28785 transitions. Word has length 15 [2022-11-19 07:04:11,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:04:11,133 INFO L495 AbstractCegarLoop]: Abstraction has 8632 states and 28785 transitions. [2022-11-19 07:04:11,133 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) [2022-11-19 07:04:11,133 INFO L276 IsEmpty]: Start isEmpty. Operand 8632 states and 28785 transitions. [2022-11-19 07:04:11,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-19 07:04:11,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:11,135 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-11-19 07:04:11,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-19 07:04:11,137 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-19 07:04:11,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:11,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1756464727, now seen corresponding path program 1 times [2022-11-19 07:04:11,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:04:11,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463981932] [2022-11-19 07:04:11,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:11,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:04:11,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:04:11,165 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:04:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:04:11,194 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:04:11,195 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:04:11,195 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-11-19 07:04:11,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-11-19 07:04:11,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-11-19 07:04:11,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-11-19 07:04:11,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-11-19 07:04:11,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-11-19 07:04:11,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-11-19 07:04:11,197 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-11-19 07:04:11,197 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-11-19 07:04:11,197 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-11-19 07:04:11,197 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-11-19 07:04:11,197 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-11-19 07:04:11,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr2ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-11-19 07:04:11,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr3ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-11-19 07:04:11,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-11-19 07:04:11,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-11-19 07:04:11,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr2ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-11-19 07:04:11,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr3ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-11-19 07:04:11,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-11-19 07:04:11,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-11-19 07:04:11,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr2ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-11-19 07:04:11,200 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-11-19 07:04:11,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-19 07:04:11,200 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:04:11,201 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-19 07:04:11,201 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-19 07:04:11,234 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-19 07:04:11,238 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 07:04:11,239 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 142 places, 148 transitions, 340 flow [2022-11-19 07:04:11,239 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 142 places, 148 transitions, 340 flow [2022-11-19 07:04:11,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 148 transitions, 340 flow [2022-11-19 07:04:11,601 INFO L130 PetriNetUnfolder]: 66/635 cut-off events. [2022-11-19 07:04:11,601 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-19 07:04:11,606 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. [2022-11-19 07:04:11,629 INFO L119 LiptonReduction]: Number of co-enabled transitions 10440 [2022-11-19 07:04:16,053 INFO L134 LiptonReduction]: Checked pairs total: 50161 [2022-11-19 07:04:16,053 INFO L136 LiptonReduction]: Total number of compositions: 152 [2022-11-19 07:04:16,058 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 75 places, 76 transitions, 196 flow [2022-11-19 07:04:28,445 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) [2022-11-19 07:04:28,461 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:04:28,474 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;@70ca472f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:04:28,474 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-19 07:04:29,004 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) [2022-11-19 07:04:29,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-19 07:04:29,005 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:29,005 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-19 07:04:29,005 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-19 07:04:29,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:29,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1242, now seen corresponding path program 1 times [2022-11-19 07:04:29,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:04:29,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472053422] [2022-11-19 07:04:29,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:29,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:04:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:29,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:04:29,016 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:04:29,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472053422] [2022-11-19 07:04:29,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472053422] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:04:29,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:04:29,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-19 07:04:29,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090515056] [2022-11-19 07:04:29,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:04:29,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:04:29,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:04:29,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:04:29,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:04:29,511 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) [2022-11-19 07:04:34,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:04:34,126 INFO L93 Difference]: Finished difference Result 165617 states and 782239 transitions. [2022-11-19 07:04:34,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:04:34,130 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 [2022-11-19 07:04:34,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:04:35,489 INFO L225 Difference]: With dead ends: 165617 [2022-11-19 07:04:35,489 INFO L226 Difference]: Without dead ends: 164118 [2022-11-19 07:04:35,489 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 [2022-11-19 07:04:35,490 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, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:04:35,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:04:36,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164118 states. [2022-11-19 07:04:43,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164118 to 164118. [2022-11-19 07:04:43,573 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) [2022-11-19 07:04:45,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164118 states to 164118 states and 774490 transitions. [2022-11-19 07:04:45,851 INFO L78 Accepts]: Start accepts. Automaton has 164118 states and 774490 transitions. Word has length 1 [2022-11-19 07:04:45,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:04:45,851 INFO L495 AbstractCegarLoop]: Abstraction has 164118 states and 774490 transitions. [2022-11-19 07:04:45,851 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) [2022-11-19 07:04:45,851 INFO L276 IsEmpty]: Start isEmpty. Operand 164118 states and 774490 transitions. [2022-11-19 07:04:45,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 07:04:45,852 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:45,852 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 07:04:45,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-19 07:04:45,852 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-11-19 07:04:45,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:45,853 INFO L85 PathProgramCache]: Analyzing trace with hash 38081609, now seen corresponding path program 1 times [2022-11-19 07:04:45,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:04:45,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741054622] [2022-11-19 07:04:45,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:45,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:04:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:45,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:04:45,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:04:45,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741054622] [2022-11-19 07:04:45,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741054622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:04:45,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:04:45,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:04:45,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071904069] [2022-11-19 07:04:45,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:04:45,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:04:45,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:04:45,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:04:45,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:04:45,880 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) [2022-11-19 07:04:48,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:04:48,898 INFO L93 Difference]: Finished difference Result 164118 states and 774489 transitions. [2022-11-19 07:04:48,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:04:48,899 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 [2022-11-19 07:04:48,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted.