./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4429870c-f16d-4692-992e-e0933aadbb99/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4429870c-f16d-4692-992e-e0933aadbb99/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4429870c-f16d-4692-992e-e0933aadbb99/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4429870c-f16d-4692-992e-e0933aadbb99/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4429870c-f16d-4692-992e-e0933aadbb99/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4429870c-f16d-4692-992e-e0933aadbb99/bin/uautomizer-tPACEb0tL8 --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31f5db4bc5916150a86a586587dbeca1bc7aa37b414274f5dc02856908270171 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:05:31,596 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:05:31,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:05:31,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:05:31,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:05:31,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:05:31,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:05:31,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:05:31,651 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:05:31,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:05:31,660 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:05:31,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:05:31,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:05:31,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:05:31,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:05:31,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:05:31,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:05:31,674 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:05:31,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:05:31,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:05:31,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:05:31,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:05:31,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:05:31,692 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:05:31,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:05:31,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:05:31,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:05:31,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:05:31,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:05:31,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:05:31,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:05:31,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:05:31,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:05:31,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:05:31,717 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:05:31,717 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:05:31,718 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:05:31,718 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:05:31,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:05:31,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:05:31,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:05:31,722 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4429870c-f16d-4692-992e-e0933aadbb99/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-16 11:05:31,773 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:05:31,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:05:31,777 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:05:31,778 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:05:31,779 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:05:31,779 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:05:31,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:05:31,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:05:31,781 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:05:31,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:05:31,783 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:05:31,783 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:05:31,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:05:31,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:05:31,785 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:05:31,785 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:05:31,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:05:31,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:05:31,786 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-16 11:05:31,786 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:05:31,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:05:31,787 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:05:31,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:05:31,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:05:31,788 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:05:31,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:05:31,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:05:31,791 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:05:31,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:05:31,792 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:05:31,792 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:05:31,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:05:31,793 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:05:31,794 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:05:31,794 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:05:31,795 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_4429870c-f16d-4692-992e-e0933aadbb99/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4429870c-f16d-4692-992e-e0933aadbb99/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31f5db4bc5916150a86a586587dbeca1bc7aa37b414274f5dc02856908270171 [2022-11-16 11:05:32,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:05:32,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:05:32,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:05:32,267 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:05:32,268 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:05:32,270 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4429870c-f16d-4692-992e-e0933aadbb99/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i [2022-11-16 11:05:32,373 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4429870c-f16d-4692-992e-e0933aadbb99/bin/uautomizer-tPACEb0tL8/data/113cdff94/6818f0f67ee24f3b9c5cb4a57d762b0c/FLAGf95816b34 [2022-11-16 11:05:33,058 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:05:33,059 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4429870c-f16d-4692-992e-e0933aadbb99/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i [2022-11-16 11:05:33,072 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4429870c-f16d-4692-992e-e0933aadbb99/bin/uautomizer-tPACEb0tL8/data/113cdff94/6818f0f67ee24f3b9c5cb4a57d762b0c/FLAGf95816b34 [2022-11-16 11:05:33,333 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4429870c-f16d-4692-992e-e0933aadbb99/bin/uautomizer-tPACEb0tL8/data/113cdff94/6818f0f67ee24f3b9c5cb4a57d762b0c [2022-11-16 11:05:33,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:05:33,343 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:05:33,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:05:33,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:05:33,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:05:33,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:05:33" (1/1) ... [2022-11-16 11:05:33,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fb3c195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:33, skipping insertion in model container [2022-11-16 11:05:33,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:05:33" (1/1) ... [2022-11-16 11:05:33,365 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:05:33,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:05:33,706 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-16 11:05:33,919 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4429870c-f16d-4692-992e-e0933aadbb99/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i[30893,30906] [2022-11-16 11:05:33,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:05:33,948 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:05:33,966 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-16 11:05:33,995 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4429870c-f16d-4692-992e-e0933aadbb99/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i[30893,30906] [2022-11-16 11:05:33,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:05:34,042 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:05:34,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:34 WrapperNode [2022-11-16 11:05:34,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:05:34,044 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:05:34,044 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:05:34,045 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:05:34,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:34" (1/1) ... [2022-11-16 11:05:34,070 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:34" (1/1) ... [2022-11-16 11:05:34,118 INFO L138 Inliner]: procedures = 173, calls = 24, calls flagged for inlining = 5, calls inlined = 7, statements flattened = 188 [2022-11-16 11:05:34,120 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:05:34,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:05:34,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:05:34,122 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:05:34,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:34" (1/1) ... [2022-11-16 11:05:34,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:34" (1/1) ... [2022-11-16 11:05:34,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:34" (1/1) ... [2022-11-16 11:05:34,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:34" (1/1) ... [2022-11-16 11:05:34,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:34" (1/1) ... [2022-11-16 11:05:34,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:34" (1/1) ... [2022-11-16 11:05:34,158 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:34" (1/1) ... [2022-11-16 11:05:34,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:34" (1/1) ... [2022-11-16 11:05:34,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:05:34,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:05:34,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:05:34,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:05:34,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:34" (1/1) ... [2022-11-16 11:05:34,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:05:34,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4429870c-f16d-4692-992e-e0933aadbb99/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:34,217 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4429870c-f16d-4692-992e-e0933aadbb99/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:05:34,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4429870c-f16d-4692-992e-e0933aadbb99/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:05:34,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:05:34,264 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-16 11:05:34,264 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-16 11:05:34,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:05:34,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 11:05:34,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:05:34,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:05:34,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:05:34,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:05:34,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 11:05:34,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:05:34,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:05:34,267 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:05:34,423 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:05:34,426 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:05:34,950 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:05:35,336 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:05:35,336 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 11:05:35,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:05:35 BoogieIcfgContainer [2022-11-16 11:05:35,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:05:35,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:05:35,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:05:35,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:05:35,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:05:33" (1/3) ... [2022-11-16 11:05:35,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18be5c00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:05:35, skipping insertion in model container [2022-11-16 11:05:35,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:34" (2/3) ... [2022-11-16 11:05:35,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18be5c00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:05:35, skipping insertion in model container [2022-11-16 11:05:35,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:05:35" (3/3) ... [2022-11-16 11:05:35,351 INFO L112 eAbstractionObserver]: Analyzing ICFG 48_ticket_lock_low_contention_vs.i [2022-11-16 11:05:35,361 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:05:35,374 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:05:35,375 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2022-11-16 11:05:35,375 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:05:35,460 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:05:35,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 117 transitions, 239 flow [2022-11-16 11:05:35,638 INFO L130 PetriNetUnfolder]: 8/176 cut-off events. [2022-11-16 11:05:35,639 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:05:35,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 176 events. 8/176 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 460 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 99. Up to 4 conditions per place. [2022-11-16 11:05:35,649 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 117 transitions, 239 flow [2022-11-16 11:05:35,656 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 117 transitions, 239 flow [2022-11-16 11:05:35,668 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:05:35,676 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=PETRI_NET, 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;@712759ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:05:35,676 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2022-11-16 11:05:35,686 INFO L130 PetriNetUnfolder]: 1/34 cut-off events. [2022-11-16 11:05:35,686 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:05:35,686 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:35,687 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:35,688 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-11-16 11:05:35,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:35,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1984803440, now seen corresponding path program 1 times [2022-11-16 11:05:35,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:35,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871806218] [2022-11-16 11:05:35,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:35,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:35,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:35,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:35,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871806218] [2022-11-16 11:05:35,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871806218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:35,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:35,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:05:35,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379853043] [2022-11-16 11:05:35,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:35,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:05:35,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:36,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:05:36,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:05:36,023 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 117 [2022-11-16 11:05:36,026 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 117 transitions, 239 flow. Second operand has 2 states, 2 states have (on average 86.0) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:36,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:36,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 117 [2022-11-16 11:05:36,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:36,205 INFO L130 PetriNetUnfolder]: 18/257 cut-off events. [2022-11-16 11:05:36,205 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:05:36,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 257 events. 18/257 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 892 event pairs, 9 based on Foata normal form. 13/228 useless extension candidates. Maximal degree in co-relation 224. Up to 38 conditions per place. [2022-11-16 11:05:36,214 INFO L137 encePairwiseOnDemand]: 96/117 looper letters, 9 selfloop transitions, 0 changer transitions 0/94 dead transitions. [2022-11-16 11:05:36,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 94 transitions, 211 flow [2022-11-16 11:05:36,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:05:36,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:05:36,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 200 transitions. [2022-11-16 11:05:36,236 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8547008547008547 [2022-11-16 11:05:36,237 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 200 transitions. [2022-11-16 11:05:36,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 200 transitions. [2022-11-16 11:05:36,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:36,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 200 transitions. [2022-11-16 11:05:36,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 100.0) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:36,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:36,260 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:36,262 INFO L175 Difference]: Start difference. First operand has 115 places, 117 transitions, 239 flow. Second operand 2 states and 200 transitions. [2022-11-16 11:05:36,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 94 transitions, 211 flow [2022-11-16 11:05:36,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 94 transitions, 211 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:05:36,277 INFO L231 Difference]: Finished difference. Result has 96 places, 94 transitions, 193 flow [2022-11-16 11:05:36,280 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=193, PETRI_PLACES=96, PETRI_TRANSITIONS=94} [2022-11-16 11:05:36,287 INFO L288 CegarLoopForPetriNet]: 115 programPoint places, -19 predicate places. [2022-11-16 11:05:36,288 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 94 transitions, 193 flow [2022-11-16 11:05:36,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 86.0) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:36,289 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:36,289 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:36,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:05:36,290 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-11-16 11:05:36,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:36,293 INFO L85 PathProgramCache]: Analyzing trace with hash -2123613420, now seen corresponding path program 1 times [2022-11-16 11:05:36,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:36,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472526871] [2022-11-16 11:05:36,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:36,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:36,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:36,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:36,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:36,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472526871] [2022-11-16 11:05:36,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472526871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:36,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:36,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:05:36,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161196836] [2022-11-16 11:05:36,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:36,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:05:36,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:36,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:05:36,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:05:36,463 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 117 [2022-11-16 11:05:36,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 94 transitions, 193 flow. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:36,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:36,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 117 [2022-11-16 11:05:36,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:36,758 INFO L130 PetriNetUnfolder]: 224/829 cut-off events. [2022-11-16 11:05:36,758 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:05:36,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1299 conditions, 829 events. 224/829 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 4737 event pairs, 151 based on Foata normal form. 0/674 useless extension candidates. Maximal degree in co-relation 1295. Up to 406 conditions per place. [2022-11-16 11:05:36,765 INFO L137 encePairwiseOnDemand]: 110/117 looper letters, 39 selfloop transitions, 6 changer transitions 0/109 dead transitions. [2022-11-16 11:05:36,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 109 transitions, 313 flow [2022-11-16 11:05:36,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:05:36,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:05:36,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 238 transitions. [2022-11-16 11:05:36,770 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6780626780626781 [2022-11-16 11:05:36,770 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 238 transitions. [2022-11-16 11:05:36,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 238 transitions. [2022-11-16 11:05:36,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:36,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 238 transitions. [2022-11-16 11:05:36,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:36,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:36,774 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:36,775 INFO L175 Difference]: Start difference. First operand has 96 places, 94 transitions, 193 flow. Second operand 3 states and 238 transitions. [2022-11-16 11:05:36,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 109 transitions, 313 flow [2022-11-16 11:05:36,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 109 transitions, 313 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:05:36,800 INFO L231 Difference]: Finished difference. Result has 100 places, 99 transitions, 239 flow [2022-11-16 11:05:36,801 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=239, PETRI_PLACES=100, PETRI_TRANSITIONS=99} [2022-11-16 11:05:36,802 INFO L288 CegarLoopForPetriNet]: 115 programPoint places, -15 predicate places. [2022-11-16 11:05:36,802 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 99 transitions, 239 flow [2022-11-16 11:05:36,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:36,804 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:36,805 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:36,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:05:36,805 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-11-16 11:05:36,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:36,808 INFO L85 PathProgramCache]: Analyzing trace with hash -626203019, now seen corresponding path program 1 times [2022-11-16 11:05:36,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:36,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465679329] [2022-11-16 11:05:36,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:36,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:36,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:36,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:36,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:36,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465679329] [2022-11-16 11:05:36,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465679329] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:36,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:36,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:05:36,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78221914] [2022-11-16 11:05:36,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:36,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:05:36,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:36,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:05:36,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:05:36,988 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 117 [2022-11-16 11:05:36,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 99 transitions, 239 flow. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:36,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:36,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 117 [2022-11-16 11:05:36,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:37,252 INFO L130 PetriNetUnfolder]: 218/844 cut-off events. [2022-11-16 11:05:37,252 INFO L131 PetriNetUnfolder]: For 115/117 co-relation queries the response was YES. [2022-11-16 11:05:37,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1463 conditions, 844 events. 218/844 cut-off events. For 115/117 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4940 event pairs, 131 based on Foata normal form. 0/701 useless extension candidates. Maximal degree in co-relation 1457. Up to 398 conditions per place. [2022-11-16 11:05:37,259 INFO L137 encePairwiseOnDemand]: 110/117 looper letters, 42 selfloop transitions, 7 changer transitions 0/115 dead transitions. [2022-11-16 11:05:37,259 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 115 transitions, 381 flow [2022-11-16 11:05:37,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:05:37,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:05:37,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 240 transitions. [2022-11-16 11:05:37,262 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6837606837606838 [2022-11-16 11:05:37,263 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 240 transitions. [2022-11-16 11:05:37,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 240 transitions. [2022-11-16 11:05:37,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:37,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 240 transitions. [2022-11-16 11:05:37,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:37,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:37,267 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:37,267 INFO L175 Difference]: Start difference. First operand has 100 places, 99 transitions, 239 flow. Second operand 3 states and 240 transitions. [2022-11-16 11:05:37,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 115 transitions, 381 flow [2022-11-16 11:05:37,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 115 transitions, 365 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:05:37,274 INFO L231 Difference]: Finished difference. Result has 102 places, 104 transitions, 279 flow [2022-11-16 11:05:37,274 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=279, PETRI_PLACES=102, PETRI_TRANSITIONS=104} [2022-11-16 11:05:37,275 INFO L288 CegarLoopForPetriNet]: 115 programPoint places, -13 predicate places. [2022-11-16 11:05:37,275 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 104 transitions, 279 flow [2022-11-16 11:05:37,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:37,276 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:37,276 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:37,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:05:37,277 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-11-16 11:05:37,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:37,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1217310717, now seen corresponding path program 1 times [2022-11-16 11:05:37,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:37,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060244196] [2022-11-16 11:05:37,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:37,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:37,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:05:37,298 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:05:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:05:37,333 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:05:37,333 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:05:37,335 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 37 remaining) [2022-11-16 11:05:37,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (35 of 37 remaining) [2022-11-16 11:05:37,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (34 of 37 remaining) [2022-11-16 11:05:37,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (33 of 37 remaining) [2022-11-16 11:05:37,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (32 of 37 remaining) [2022-11-16 11:05:37,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (31 of 37 remaining) [2022-11-16 11:05:37,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (30 of 37 remaining) [2022-11-16 11:05:37,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (29 of 37 remaining) [2022-11-16 11:05:37,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (28 of 37 remaining) [2022-11-16 11:05:37,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (27 of 37 remaining) [2022-11-16 11:05:37,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (26 of 37 remaining) [2022-11-16 11:05:37,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (25 of 37 remaining) [2022-11-16 11:05:37,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (24 of 37 remaining) [2022-11-16 11:05:37,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (23 of 37 remaining) [2022-11-16 11:05:37,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (22 of 37 remaining) [2022-11-16 11:05:37,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (21 of 37 remaining) [2022-11-16 11:05:37,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (20 of 37 remaining) [2022-11-16 11:05:37,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 37 remaining) [2022-11-16 11:05:37,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (18 of 37 remaining) [2022-11-16 11:05:37,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (17 of 37 remaining) [2022-11-16 11:05:37,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (16 of 37 remaining) [2022-11-16 11:05:37,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (15 of 37 remaining) [2022-11-16 11:05:37,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (14 of 37 remaining) [2022-11-16 11:05:37,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (13 of 37 remaining) [2022-11-16 11:05:37,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (12 of 37 remaining) [2022-11-16 11:05:37,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 37 remaining) [2022-11-16 11:05:37,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 37 remaining) [2022-11-16 11:05:37,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 37 remaining) [2022-11-16 11:05:37,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 37 remaining) [2022-11-16 11:05:37,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 37 remaining) [2022-11-16 11:05:37,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 37 remaining) [2022-11-16 11:05:37,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 37 remaining) [2022-11-16 11:05:37,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (4 of 37 remaining) [2022-11-16 11:05:37,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (3 of 37 remaining) [2022-11-16 11:05:37,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (2 of 37 remaining) [2022-11-16 11:05:37,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (1 of 37 remaining) [2022-11-16 11:05:37,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (0 of 37 remaining) [2022-11-16 11:05:37,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:05:37,350 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-16 11:05:37,354 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:05:37,354 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 11:05:37,417 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:05:37,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 156 transitions, 324 flow [2022-11-16 11:05:37,467 INFO L130 PetriNetUnfolder]: 13/276 cut-off events. [2022-11-16 11:05:37,468 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 11:05:37,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 276 events. 13/276 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1000 event pairs, 0 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 177. Up to 6 conditions per place. [2022-11-16 11:05:37,471 INFO L82 GeneralOperation]: Start removeDead. Operand has 154 places, 156 transitions, 324 flow [2022-11-16 11:05:37,477 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 156 transitions, 324 flow [2022-11-16 11:05:37,479 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:05:37,481 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=PETRI_NET, 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;@712759ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:05:37,481 INFO L358 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2022-11-16 11:05:37,487 INFO L130 PetriNetUnfolder]: 1/34 cut-off events. [2022-11-16 11:05:37,487 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:05:37,487 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:37,488 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:37,488 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-11-16 11:05:37,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:37,489 INFO L85 PathProgramCache]: Analyzing trace with hash -760383600, now seen corresponding path program 1 times [2022-11-16 11:05:37,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:37,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852662266] [2022-11-16 11:05:37,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:37,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:37,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:37,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:37,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852662266] [2022-11-16 11:05:37,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852662266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:37,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:37,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:05:37,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392175327] [2022-11-16 11:05:37,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:37,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:05:37,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:37,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:05:37,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:05:37,556 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 156 [2022-11-16 11:05:37,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 156 transitions, 324 flow. Second operand has 2 states, 2 states have (on average 109.0) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:37,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:37,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 156 [2022-11-16 11:05:37,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:37,808 INFO L130 PetriNetUnfolder]: 150/970 cut-off events. [2022-11-16 11:05:37,808 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-11-16 11:05:37,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1223 conditions, 970 events. 150/970 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6312 event pairs, 93 based on Foata normal form. 63/826 useless extension candidates. Maximal degree in co-relation 903. Up to 234 conditions per place. [2022-11-16 11:05:37,819 INFO L137 encePairwiseOnDemand]: 125/156 looper letters, 14 selfloop transitions, 0 changer transitions 0/122 dead transitions. [2022-11-16 11:05:37,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 122 transitions, 284 flow [2022-11-16 11:05:37,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:05:37,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:05:37,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 261 transitions. [2022-11-16 11:05:37,822 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8365384615384616 [2022-11-16 11:05:37,822 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 261 transitions. [2022-11-16 11:05:37,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 261 transitions. [2022-11-16 11:05:37,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:37,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 261 transitions. [2022-11-16 11:05:37,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 130.5) internal successors, (261), 2 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:37,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:37,826 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:37,826 INFO L175 Difference]: Start difference. First operand has 154 places, 156 transitions, 324 flow. Second operand 2 states and 261 transitions. [2022-11-16 11:05:37,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 122 transitions, 284 flow [2022-11-16 11:05:37,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 122 transitions, 282 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-16 11:05:37,833 INFO L231 Difference]: Finished difference. Result has 125 places, 122 transitions, 254 flow [2022-11-16 11:05:37,833 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=254, PETRI_PLACES=125, PETRI_TRANSITIONS=122} [2022-11-16 11:05:37,836 INFO L288 CegarLoopForPetriNet]: 154 programPoint places, -29 predicate places. [2022-11-16 11:05:37,836 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 122 transitions, 254 flow [2022-11-16 11:05:37,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 109.0) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:37,837 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:37,837 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:37,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:05:37,838 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-11-16 11:05:37,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:37,838 INFO L85 PathProgramCache]: Analyzing trace with hash 2026735408, now seen corresponding path program 1 times [2022-11-16 11:05:37,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:37,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604212028] [2022-11-16 11:05:37,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:37,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:37,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:37,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:37,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:37,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604212028] [2022-11-16 11:05:37,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604212028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:37,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:37,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:05:37,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916547223] [2022-11-16 11:05:37,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:37,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:05:37,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:37,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:05:37,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:05:37,953 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 156 [2022-11-16 11:05:37,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 122 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:37,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:37,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 156 [2022-11-16 11:05:37,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:40,483 INFO L130 PetriNetUnfolder]: 6249/13052 cut-off events. [2022-11-16 11:05:40,484 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-11-16 11:05:40,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22602 conditions, 13052 events. 6249/13052 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 113205 event pairs, 4583 based on Foata normal form. 0/9974 useless extension candidates. Maximal degree in co-relation 22597. Up to 8428 conditions per place. [2022-11-16 11:05:40,664 INFO L137 encePairwiseOnDemand]: 146/156 looper letters, 63 selfloop transitions, 9 changer transitions 0/150 dead transitions. [2022-11-16 11:05:40,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 150 transitions, 454 flow [2022-11-16 11:05:40,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:05:40,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:05:40,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2022-11-16 11:05:40,668 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.655982905982906 [2022-11-16 11:05:40,669 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2022-11-16 11:05:40,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2022-11-16 11:05:40,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:40,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2022-11-16 11:05:40,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:40,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:40,673 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:40,673 INFO L175 Difference]: Start difference. First operand has 125 places, 122 transitions, 254 flow. Second operand 3 states and 307 transitions. [2022-11-16 11:05:40,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 150 transitions, 454 flow [2022-11-16 11:05:40,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 150 transitions, 454 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:05:40,677 INFO L231 Difference]: Finished difference. Result has 129 places, 130 transitions, 324 flow [2022-11-16 11:05:40,677 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=324, PETRI_PLACES=129, PETRI_TRANSITIONS=130} [2022-11-16 11:05:40,678 INFO L288 CegarLoopForPetriNet]: 154 programPoint places, -25 predicate places. [2022-11-16 11:05:40,678 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 130 transitions, 324 flow [2022-11-16 11:05:40,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:40,679 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:40,679 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:40,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:05:40,679 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-11-16 11:05:40,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:40,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1557241783, now seen corresponding path program 1 times [2022-11-16 11:05:40,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:40,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440107409] [2022-11-16 11:05:40,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:40,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:40,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:40,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:40,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:40,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440107409] [2022-11-16 11:05:40,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440107409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:40,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:40,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:05:40,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434247837] [2022-11-16 11:05:40,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:40,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:05:40,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:40,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:05:40,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:05:40,732 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 156 [2022-11-16 11:05:40,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 130 transitions, 324 flow. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:40,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:40,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 156 [2022-11-16 11:05:40,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:43,043 INFO L130 PetriNetUnfolder]: 6719/14269 cut-off events. [2022-11-16 11:05:43,044 INFO L131 PetriNetUnfolder]: For 2986/3172 co-relation queries the response was YES. [2022-11-16 11:05:43,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27721 conditions, 14269 events. 6719/14269 cut-off events. For 2986/3172 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 128179 event pairs, 4375 based on Foata normal form. 4/11147 useless extension candidates. Maximal degree in co-relation 27714. Up to 9034 conditions per place. [2022-11-16 11:05:43,149 INFO L137 encePairwiseOnDemand]: 146/156 looper letters, 70 selfloop transitions, 13 changer transitions 0/163 dead transitions. [2022-11-16 11:05:43,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 163 transitions, 591 flow [2022-11-16 11:05:43,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:05:43,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:05:43,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2022-11-16 11:05:43,152 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6623931623931624 [2022-11-16 11:05:43,152 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 310 transitions. [2022-11-16 11:05:43,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 310 transitions. [2022-11-16 11:05:43,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:43,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 310 transitions. [2022-11-16 11:05:43,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:43,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:43,161 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:43,161 INFO L175 Difference]: Start difference. First operand has 129 places, 130 transitions, 324 flow. Second operand 3 states and 310 transitions. [2022-11-16 11:05:43,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 163 transitions, 591 flow [2022-11-16 11:05:43,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 163 transitions, 563 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:05:43,193 INFO L231 Difference]: Finished difference. Result has 131 places, 141 transitions, 418 flow [2022-11-16 11:05:43,193 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=418, PETRI_PLACES=131, PETRI_TRANSITIONS=141} [2022-11-16 11:05:43,195 INFO L288 CegarLoopForPetriNet]: 154 programPoint places, -23 predicate places. [2022-11-16 11:05:43,196 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 141 transitions, 418 flow [2022-11-16 11:05:43,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:43,196 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:43,197 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:43,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:05:43,197 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-11-16 11:05:43,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:43,198 INFO L85 PathProgramCache]: Analyzing trace with hash -175124579, now seen corresponding path program 1 times [2022-11-16 11:05:43,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:43,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453769244] [2022-11-16 11:05:43,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:43,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:43,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:43,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:43,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453769244] [2022-11-16 11:05:43,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453769244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:43,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:43,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:05:43,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255087944] [2022-11-16 11:05:43,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:43,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:05:43,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:43,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:05:43,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:05:43,284 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 156 [2022-11-16 11:05:43,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 141 transitions, 418 flow. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:43,285 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:43,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 156 [2022-11-16 11:05:43,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:46,063 INFO L130 PetriNetUnfolder]: 7105/16505 cut-off events. [2022-11-16 11:05:46,063 INFO L131 PetriNetUnfolder]: For 7245/7771 co-relation queries the response was YES. [2022-11-16 11:05:46,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34140 conditions, 16505 events. 7105/16505 cut-off events. For 7245/7771 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 163713 event pairs, 3169 based on Foata normal form. 58/13260 useless extension candidates. Maximal degree in co-relation 34132. Up to 7515 conditions per place. [2022-11-16 11:05:46,204 INFO L137 encePairwiseOnDemand]: 141/156 looper letters, 84 selfloop transitions, 26 changer transitions 0/193 dead transitions. [2022-11-16 11:05:46,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 193 transitions, 851 flow [2022-11-16 11:05:46,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:05:46,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:05:46,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 324 transitions. [2022-11-16 11:05:46,207 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2022-11-16 11:05:46,207 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 324 transitions. [2022-11-16 11:05:46,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 324 transitions. [2022-11-16 11:05:46,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:46,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 324 transitions. [2022-11-16 11:05:46,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:46,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:46,213 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:46,213 INFO L175 Difference]: Start difference. First operand has 131 places, 141 transitions, 418 flow. Second operand 3 states and 324 transitions. [2022-11-16 11:05:46,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 193 transitions, 851 flow [2022-11-16 11:05:46,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 193 transitions, 805 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:05:46,244 INFO L231 Difference]: Finished difference. Result has 133 places, 166 transitions, 674 flow [2022-11-16 11:05:46,245 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=674, PETRI_PLACES=133, PETRI_TRANSITIONS=166} [2022-11-16 11:05:46,247 INFO L288 CegarLoopForPetriNet]: 154 programPoint places, -21 predicate places. [2022-11-16 11:05:46,247 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 166 transitions, 674 flow [2022-11-16 11:05:46,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:46,248 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:46,248 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:46,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:05:46,248 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-11-16 11:05:46,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:46,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1738505183, now seen corresponding path program 1 times [2022-11-16 11:05:46,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:46,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595752881] [2022-11-16 11:05:46,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:46,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:46,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:46,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:46,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595752881] [2022-11-16 11:05:46,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595752881] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:46,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:46,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:05:46,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684668500] [2022-11-16 11:05:46,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:46,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:05:46,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:46,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:05:46,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:05:46,346 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 156 [2022-11-16 11:05:46,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 166 transitions, 674 flow. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:46,347 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:46,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 156 [2022-11-16 11:05:46,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:49,156 INFO L130 PetriNetUnfolder]: 9231/20901 cut-off events. [2022-11-16 11:05:49,156 INFO L131 PetriNetUnfolder]: For 21200/22285 co-relation queries the response was YES. [2022-11-16 11:05:49,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49735 conditions, 20901 events. 9231/20901 cut-off events. For 21200/22285 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 207880 event pairs, 4867 based on Foata normal form. 123/17581 useless extension candidates. Maximal degree in co-relation 49726. Up to 12674 conditions per place. [2022-11-16 11:05:49,484 INFO L137 encePairwiseOnDemand]: 146/156 looper letters, 105 selfloop transitions, 22 changer transitions 0/207 dead transitions. [2022-11-16 11:05:49,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 207 transitions, 1136 flow [2022-11-16 11:05:49,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:05:49,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:05:49,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2022-11-16 11:05:49,487 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.655982905982906 [2022-11-16 11:05:49,487 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2022-11-16 11:05:49,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2022-11-16 11:05:49,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:49,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2022-11-16 11:05:49,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:49,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:49,491 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:49,492 INFO L175 Difference]: Start difference. First operand has 133 places, 166 transitions, 674 flow. Second operand 3 states and 307 transitions. [2022-11-16 11:05:49,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 207 transitions, 1136 flow [2022-11-16 11:05:49,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 207 transitions, 1064 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:05:49,518 INFO L231 Difference]: Finished difference. Result has 135 places, 184 transitions, 872 flow [2022-11-16 11:05:49,519 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=872, PETRI_PLACES=135, PETRI_TRANSITIONS=184} [2022-11-16 11:05:49,520 INFO L288 CegarLoopForPetriNet]: 154 programPoint places, -19 predicate places. [2022-11-16 11:05:49,520 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 184 transitions, 872 flow [2022-11-16 11:05:49,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:49,520 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:49,521 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:49,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:05:49,521 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err9ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-11-16 11:05:49,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:49,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1462329858, now seen corresponding path program 1 times [2022-11-16 11:05:49,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:49,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052988100] [2022-11-16 11:05:49,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:49,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:49,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:49,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:49,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:49,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052988100] [2022-11-16 11:05:49,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052988100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:49,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:49,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:05:49,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579476139] [2022-11-16 11:05:49,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:49,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:05:49,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:49,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:05:49,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:05:49,607 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 156 [2022-11-16 11:05:49,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 184 transitions, 872 flow. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:49,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:49,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 156 [2022-11-16 11:05:49,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:52,633 INFO L130 PetriNetUnfolder]: 9701/21995 cut-off events. [2022-11-16 11:05:52,633 INFO L131 PetriNetUnfolder]: For 27052/28679 co-relation queries the response was YES. [2022-11-16 11:05:52,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54604 conditions, 21995 events. 9701/21995 cut-off events. For 27052/28679 co-relation queries the response was YES. Maximal size of possible extension queue 736. Compared 221971 event pairs, 4634 based on Foata normal form. 110/18359 useless extension candidates. Maximal degree in co-relation 54594. Up to 13137 conditions per place. [2022-11-16 11:05:52,804 INFO L137 encePairwiseOnDemand]: 146/156 looper letters, 121 selfloop transitions, 28 changer transitions 0/231 dead transitions. [2022-11-16 11:05:52,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 231 transitions, 1443 flow [2022-11-16 11:05:52,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:05:52,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:05:52,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2022-11-16 11:05:52,806 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6623931623931624 [2022-11-16 11:05:52,806 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 310 transitions. [2022-11-16 11:05:52,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 310 transitions. [2022-11-16 11:05:52,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:52,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 310 transitions. [2022-11-16 11:05:52,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:52,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:52,810 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:52,810 INFO L175 Difference]: Start difference. First operand has 135 places, 184 transitions, 872 flow. Second operand 3 states and 310 transitions. [2022-11-16 11:05:52,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 231 transitions, 1443 flow [2022-11-16 11:05:52,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 231 transitions, 1345 flow, removed 20 selfloop flow, removed 2 redundant places. [2022-11-16 11:05:52,941 INFO L231 Difference]: Finished difference. Result has 137 places, 206 transitions, 1126 flow [2022-11-16 11:05:52,942 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1126, PETRI_PLACES=137, PETRI_TRANSITIONS=206} [2022-11-16 11:05:52,943 INFO L288 CegarLoopForPetriNet]: 154 programPoint places, -17 predicate places. [2022-11-16 11:05:52,943 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 206 transitions, 1126 flow [2022-11-16 11:05:52,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:52,944 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:52,944 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:52,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:05:52,944 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-11-16 11:05:52,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:52,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1179241626, now seen corresponding path program 1 times [2022-11-16 11:05:52,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:52,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381816049] [2022-11-16 11:05:52,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:52,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:53,011 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:05:53,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:53,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381816049] [2022-11-16 11:05:53,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381816049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:53,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:53,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:05:53,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288551197] [2022-11-16 11:05:53,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:53,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:05:53,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:53,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:05:53,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:05:53,015 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 156 [2022-11-16 11:05:53,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 206 transitions, 1126 flow. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:53,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:53,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 156 [2022-11-16 11:05:53,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:56,559 INFO L130 PetriNetUnfolder]: 10190/23286 cut-off events. [2022-11-16 11:05:56,560 INFO L131 PetriNetUnfolder]: For 37410/39642 co-relation queries the response was YES. [2022-11-16 11:05:56,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61401 conditions, 23286 events. 10190/23286 cut-off events. For 37410/39642 co-relation queries the response was YES. Maximal size of possible extension queue 790. Compared 238036 event pairs, 4401 based on Foata normal form. 79/19745 useless extension candidates. Maximal degree in co-relation 61390. Up to 13544 conditions per place. [2022-11-16 11:05:56,727 INFO L137 encePairwiseOnDemand]: 146/156 looper letters, 135 selfloop transitions, 44 changer transitions 0/262 dead transitions. [2022-11-16 11:05:56,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 262 transitions, 1838 flow [2022-11-16 11:05:56,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:05:56,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:05:56,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 309 transitions. [2022-11-16 11:05:56,731 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6602564102564102 [2022-11-16 11:05:56,731 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 309 transitions. [2022-11-16 11:05:56,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 309 transitions. [2022-11-16 11:05:56,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:56,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 309 transitions. [2022-11-16 11:05:56,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:56,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:56,735 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:56,735 INFO L175 Difference]: Start difference. First operand has 137 places, 206 transitions, 1126 flow. Second operand 3 states and 309 transitions. [2022-11-16 11:05:56,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 262 transitions, 1838 flow [2022-11-16 11:05:56,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 262 transitions, 1712 flow, removed 24 selfloop flow, removed 2 redundant places. [2022-11-16 11:05:56,897 INFO L231 Difference]: Finished difference. Result has 139 places, 236 transitions, 1504 flow [2022-11-16 11:05:56,898 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=1030, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1504, PETRI_PLACES=139, PETRI_TRANSITIONS=236} [2022-11-16 11:05:56,898 INFO L288 CegarLoopForPetriNet]: 154 programPoint places, -15 predicate places. [2022-11-16 11:05:56,899 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 236 transitions, 1504 flow [2022-11-16 11:05:56,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:56,899 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:56,899 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:56,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:05:56,900 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-11-16 11:05:56,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:56,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1252983278, now seen corresponding path program 1 times [2022-11-16 11:05:56,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:56,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735371985] [2022-11-16 11:05:56,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:56,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:05:56,927 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:05:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:05:56,948 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:05:56,948 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:05:56,949 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (48 of 49 remaining) [2022-11-16 11:05:56,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (47 of 49 remaining) [2022-11-16 11:05:56,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (46 of 49 remaining) [2022-11-16 11:05:56,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (45 of 49 remaining) [2022-11-16 11:05:56,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (44 of 49 remaining) [2022-11-16 11:05:56,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (43 of 49 remaining) [2022-11-16 11:05:56,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (42 of 49 remaining) [2022-11-16 11:05:56,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (41 of 49 remaining) [2022-11-16 11:05:56,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (40 of 49 remaining) [2022-11-16 11:05:56,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (39 of 49 remaining) [2022-11-16 11:05:56,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (38 of 49 remaining) [2022-11-16 11:05:56,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (37 of 49 remaining) [2022-11-16 11:05:56,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (36 of 49 remaining) [2022-11-16 11:05:56,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (35 of 49 remaining) [2022-11-16 11:05:56,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (34 of 49 remaining) [2022-11-16 11:05:56,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (33 of 49 remaining) [2022-11-16 11:05:56,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (32 of 49 remaining) [2022-11-16 11:05:56,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (31 of 49 remaining) [2022-11-16 11:05:56,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (30 of 49 remaining) [2022-11-16 11:05:56,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (29 of 49 remaining) [2022-11-16 11:05:56,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (28 of 49 remaining) [2022-11-16 11:05:56,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (27 of 49 remaining) [2022-11-16 11:05:56,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (26 of 49 remaining) [2022-11-16 11:05:56,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (25 of 49 remaining) [2022-11-16 11:05:56,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (24 of 49 remaining) [2022-11-16 11:05:56,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 49 remaining) [2022-11-16 11:05:56,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 49 remaining) [2022-11-16 11:05:56,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 49 remaining) [2022-11-16 11:05:56,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 49 remaining) [2022-11-16 11:05:56,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 49 remaining) [2022-11-16 11:05:56,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (18 of 49 remaining) [2022-11-16 11:05:56,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (17 of 49 remaining) [2022-11-16 11:05:56,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (16 of 49 remaining) [2022-11-16 11:05:56,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (15 of 49 remaining) [2022-11-16 11:05:56,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (14 of 49 remaining) [2022-11-16 11:05:56,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (13 of 49 remaining) [2022-11-16 11:05:56,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (12 of 49 remaining) [2022-11-16 11:05:56,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 49 remaining) [2022-11-16 11:05:56,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 49 remaining) [2022-11-16 11:05:56,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 49 remaining) [2022-11-16 11:05:56,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 49 remaining) [2022-11-16 11:05:56,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 49 remaining) [2022-11-16 11:05:56,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 49 remaining) [2022-11-16 11:05:56,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 49 remaining) [2022-11-16 11:05:56,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (4 of 49 remaining) [2022-11-16 11:05:56,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (3 of 49 remaining) [2022-11-16 11:05:56,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (2 of 49 remaining) [2022-11-16 11:05:56,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (1 of 49 remaining) [2022-11-16 11:05:56,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (0 of 49 remaining) [2022-11-16 11:05:56,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:05:56,963 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:56,963 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:05:56,964 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-16 11:05:57,038 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:05:57,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 195 transitions, 411 flow [2022-11-16 11:05:57,128 INFO L130 PetriNetUnfolder]: 18/376 cut-off events. [2022-11-16 11:05:57,129 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-16 11:05:57,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 376 events. 18/376 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1549 event pairs, 0 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 280. Up to 8 conditions per place. [2022-11-16 11:05:57,132 INFO L82 GeneralOperation]: Start removeDead. Operand has 193 places, 195 transitions, 411 flow [2022-11-16 11:05:57,139 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 195 transitions, 411 flow [2022-11-16 11:05:57,143 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:05:57,144 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=PETRI_NET, 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;@712759ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:05:57,145 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2022-11-16 11:05:57,148 INFO L130 PetriNetUnfolder]: 1/34 cut-off events. [2022-11-16 11:05:57,148 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:05:57,148 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:57,149 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:57,149 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-11-16 11:05:57,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:57,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1377342448, now seen corresponding path program 1 times [2022-11-16 11:05:57,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:57,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456683942] [2022-11-16 11:05:57,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:57,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:57,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:57,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:57,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456683942] [2022-11-16 11:05:57,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456683942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:57,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:57,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:05:57,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492519779] [2022-11-16 11:05:57,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:57,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:05:57,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:57,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:05:57,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:05:57,181 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 195 [2022-11-16 11:05:57,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 195 transitions, 411 flow. Second operand has 2 states, 2 states have (on average 132.0) internal successors, (264), 2 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:57,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:57,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 195 [2022-11-16 11:05:57,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:58,167 INFO L130 PetriNetUnfolder]: 934/3955 cut-off events. [2022-11-16 11:05:58,167 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2022-11-16 11:05:58,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5314 conditions, 3955 events. 934/3955 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 35987 event pairs, 621 based on Foata normal form. 305/3319 useless extension candidates. Maximal degree in co-relation 3997. Up to 1274 conditions per place. [2022-11-16 11:05:58,213 INFO L137 encePairwiseOnDemand]: 154/195 looper letters, 19 selfloop transitions, 0 changer transitions 0/150 dead transitions. [2022-11-16 11:05:58,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 150 transitions, 359 flow [2022-11-16 11:05:58,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:05:58,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:05:58,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 322 transitions. [2022-11-16 11:05:58,216 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8256410256410256 [2022-11-16 11:05:58,216 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 322 transitions. [2022-11-16 11:05:58,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 322 transitions. [2022-11-16 11:05:58,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:58,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 322 transitions. [2022-11-16 11:05:58,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 161.0) internal successors, (322), 2 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:58,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:58,220 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:58,220 INFO L175 Difference]: Start difference. First operand has 193 places, 195 transitions, 411 flow. Second operand 2 states and 322 transitions. [2022-11-16 11:05:58,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 150 transitions, 359 flow [2022-11-16 11:05:58,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 150 transitions, 353 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-11-16 11:05:58,225 INFO L231 Difference]: Finished difference. Result has 154 places, 150 transitions, 315 flow [2022-11-16 11:05:58,225 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=315, PETRI_PLACES=154, PETRI_TRANSITIONS=150} [2022-11-16 11:05:58,227 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, -39 predicate places. [2022-11-16 11:05:58,228 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 150 transitions, 315 flow [2022-11-16 11:05:58,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 132.0) internal successors, (264), 2 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:58,228 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:58,229 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:58,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:05:58,229 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-11-16 11:05:58,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:58,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1845962323, now seen corresponding path program 1 times [2022-11-16 11:05:58,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:58,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718961767] [2022-11-16 11:05:58,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:58,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:58,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:58,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:58,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718961767] [2022-11-16 11:05:58,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718961767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:58,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:58,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:05:58,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841879626] [2022-11-16 11:05:58,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:58,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:05:58,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:58,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:05:58,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:05:58,287 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 195 [2022-11-16 11:05:58,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 150 transitions, 315 flow. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:58,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:58,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 195 [2022-11-16 11:05:58,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand