./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/25_stack_longest-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d05d2a9d-a2f4-40e5-873d-cb5d33e8f67f/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d05d2a9d-a2f4-40e5-873d-cb5d33e8f67f/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d05d2a9d-a2f4-40e5-873d-cb5d33e8f67f/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d05d2a9d-a2f4-40e5-873d-cb5d33e8f67f/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/25_stack_longest-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d05d2a9d-a2f4-40e5-873d-cb5d33e8f67f/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d05d2a9d-a2f4-40e5-873d-cb5d33e8f67f/bin/uautomizer-Dbtcem3rbc --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 0cc9afdbf7eeaac0d52aedc8a0325c076240e2f45d0a3fe91081372b30b32137 --- 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-5e519f3 [2022-11-02 20:17:11,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:17:11,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:17:11,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:17:11,946 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:17:11,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:17:11,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:17:11,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:17:11,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:17:11,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:17:11,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:17:11,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:17:11,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:17:11,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:17:11,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:17:11,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:17:11,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:17:11,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:17:11,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:17:11,984 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:17:11,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:17:11,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:17:11,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:17:11,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:17:11,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:17:12,000 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:17:12,000 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:17:12,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:17:12,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:17:12,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:17:12,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:17:12,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:17:12,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:17:12,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:17:12,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:17:12,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:17:12,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:17:12,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:17:12,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:17:12,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:17:12,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:17:12,013 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d05d2a9d-a2f4-40e5-873d-cb5d33e8f67f/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-02 20:17:12,049 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:17:12,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:17:12,050 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:17:12,050 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:17:12,051 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:17:12,051 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:17:12,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:17:12,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:17:12,052 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:17:12,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:17:12,053 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:17:12,054 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:17:12,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:17:12,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:17:12,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:17:12,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:17:12,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:17:12,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:17:12,055 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-02 20:17:12,055 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:17:12,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:17:12,056 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:17:12,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:17:12,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:17:12,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:17:12,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:17:12,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:17:12,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:17:12,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:17:12,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:17:12,059 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:17:12,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:17:12,060 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:17:12,060 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:17:12,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:17:12,060 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_d05d2a9d-a2f4-40e5-873d-cb5d33e8f67f/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d05d2a9d-a2f4-40e5-873d-cb5d33e8f67f/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cc9afdbf7eeaac0d52aedc8a0325c076240e2f45d0a3fe91081372b30b32137 [2022-11-02 20:17:12,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:17:12,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:17:12,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:17:12,379 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:17:12,380 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:17:12,381 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d05d2a9d-a2f4-40e5-873d-cb5d33e8f67f/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-ext/25_stack_longest-1.i [2022-11-02 20:17:12,447 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d05d2a9d-a2f4-40e5-873d-cb5d33e8f67f/bin/uautomizer-Dbtcem3rbc/data/6fa038d30/83d6ba247de3486db88c65646d214800/FLAGfa201414c [2022-11-02 20:17:12,994 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:17:12,999 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d05d2a9d-a2f4-40e5-873d-cb5d33e8f67f/sv-benchmarks/c/pthread-ext/25_stack_longest-1.i [2022-11-02 20:17:13,016 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d05d2a9d-a2f4-40e5-873d-cb5d33e8f67f/bin/uautomizer-Dbtcem3rbc/data/6fa038d30/83d6ba247de3486db88c65646d214800/FLAGfa201414c [2022-11-02 20:17:13,313 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d05d2a9d-a2f4-40e5-873d-cb5d33e8f67f/bin/uautomizer-Dbtcem3rbc/data/6fa038d30/83d6ba247de3486db88c65646d214800 [2022-11-02 20:17:13,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:17:13,319 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:17:13,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:17:13,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:17:13,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:17:13,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:17:13" (1/1) ... [2022-11-02 20:17:13,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4010c131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:13, skipping insertion in model container [2022-11-02 20:17:13,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:17:13" (1/1) ... [2022-11-02 20:17:13,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:17:13,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:17:13,778 WARN L230 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_d05d2a9d-a2f4-40e5-873d-cb5d33e8f67f/sv-benchmarks/c/pthread-ext/25_stack_longest-1.i[31040,31053] [2022-11-02 20:17:13,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:17:13,795 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:17:13,836 WARN L230 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_d05d2a9d-a2f4-40e5-873d-cb5d33e8f67f/sv-benchmarks/c/pthread-ext/25_stack_longest-1.i[31040,31053] [2022-11-02 20:17:13,840 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:17:13,869 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:17:13,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:13 WrapperNode [2022-11-02 20:17:13,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:17:13,871 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:17:13,871 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:17:13,871 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:17:13,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:13" (1/1) ... [2022-11-02 20:17:13,892 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:13" (1/1) ... [2022-11-02 20:17:13,925 INFO L138 Inliner]: procedures = 177, calls = 34, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 292 [2022-11-02 20:17:13,925 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:17:13,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:17:13,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:17:13,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:17:13,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:13" (1/1) ... [2022-11-02 20:17:13,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:13" (1/1) ... [2022-11-02 20:17:13,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:13" (1/1) ... [2022-11-02 20:17:13,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:13" (1/1) ... [2022-11-02 20:17:13,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:13" (1/1) ... [2022-11-02 20:17:13,960 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:13" (1/1) ... [2022-11-02 20:17:13,962 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:13" (1/1) ... [2022-11-02 20:17:13,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:13" (1/1) ... [2022-11-02 20:17:13,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:17:13,969 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:17:13,969 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:17:13,969 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:17:13,970 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:13" (1/1) ... [2022-11-02 20:17:13,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:17:13,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d05d2a9d-a2f4-40e5-873d-cb5d33e8f67f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:17:14,004 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d05d2a9d-a2f4-40e5-873d-cb5d33e8f67f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:17:14,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d05d2a9d-a2f4-40e5-873d-cb5d33e8f67f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:17:14,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:17:14,058 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-02 20:17:14,058 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-02 20:17:14,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:17:14,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:17:14,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:17:14,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:17:14,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:17:14,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:17:14,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:17:14,061 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:17:14,192 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:17:14,196 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:17:14,949 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:17:15,314 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:17:15,314 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 20:17:15,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:17:15 BoogieIcfgContainer [2022-11-02 20:17:15,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:17:15,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:17:15,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:17:15,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:17:15,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:17:13" (1/3) ... [2022-11-02 20:17:15,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fa66f40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:17:15, skipping insertion in model container [2022-11-02 20:17:15,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:13" (2/3) ... [2022-11-02 20:17:15,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fa66f40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:17:15, skipping insertion in model container [2022-11-02 20:17:15,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:17:15" (3/3) ... [2022-11-02 20:17:15,328 INFO L112 eAbstractionObserver]: Analyzing ICFG 25_stack_longest-1.i [2022-11-02 20:17:15,338 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:17:15,348 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:17:15,348 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-11-02 20:17:15,348 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:17:15,465 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:17:15,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 166 transitions, 337 flow [2022-11-02 20:17:15,622 INFO L130 PetriNetUnfolder]: 8/177 cut-off events. [2022-11-02 20:17:15,622 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:17:15,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 177 events. 8/177 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 236 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 141. Up to 4 conditions per place. [2022-11-02 20:17:15,628 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 166 transitions, 337 flow [2022-11-02 20:17:15,638 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 166 transitions, 337 flow [2022-11-02 20:17:15,657 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:17:15,663 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;@4bd85471, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:17:15,663 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2022-11-02 20:17:15,677 INFO L130 PetriNetUnfolder]: 2/40 cut-off events. [2022-11-02 20:17:15,677 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:17:15,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:17:15,678 INFO L208 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] [2022-11-02 20:17:15,678 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-11-02 20:17:15,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:15,684 INFO L85 PathProgramCache]: Analyzing trace with hash 621158344, now seen corresponding path program 1 times [2022-11-02 20:17:15,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:17:15,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462598508] [2022-11-02 20:17:15,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:15,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:17:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:16,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:17:16,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:17:16,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462598508] [2022-11-02 20:17:16,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462598508] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:17:16,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:17:16,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:17:16,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817066461] [2022-11-02 20:17:16,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:17:16,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:17:16,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:17:16,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:17:16,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:17:16,348 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 166 [2022-11-02 20:17:16,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 166 transitions, 337 flow. Second operand has 2 states, 2 states have (on average 139.0) internal successors, (278), 2 states have internal predecessors, (278), 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) [2022-11-02 20:17:16,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:17:16,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 166 [2022-11-02 20:17:16,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:17:16,484 INFO L130 PetriNetUnfolder]: 4/145 cut-off events. [2022-11-02 20:17:16,484 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 20:17:16,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 145 events. 4/145 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 132 event pairs, 0 based on Foata normal form. 9/139 useless extension candidates. Maximal degree in co-relation 124. Up to 10 conditions per place. [2022-11-02 20:17:16,488 INFO L137 encePairwiseOnDemand]: 147/166 looper letters, 9 selfloop transitions, 0 changer transitions 0/141 dead transitions. [2022-11-02 20:17:16,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 141 transitions, 305 flow [2022-11-02 20:17:16,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:17:16,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:17:16,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 304 transitions. [2022-11-02 20:17:16,510 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9156626506024096 [2022-11-02 20:17:16,511 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 304 transitions. [2022-11-02 20:17:16,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 304 transitions. [2022-11-02 20:17:16,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:17:16,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 304 transitions. [2022-11-02 20:17:16,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 152.0) internal successors, (304), 2 states have internal predecessors, (304), 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) [2022-11-02 20:17:16,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 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) [2022-11-02 20:17:16,532 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 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) [2022-11-02 20:17:16,534 INFO L175 Difference]: Start difference. First operand has 162 places, 166 transitions, 337 flow. Second operand 2 states and 304 transitions. [2022-11-02 20:17:16,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 141 transitions, 305 flow [2022-11-02 20:17:16,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 141 transitions, 305 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:17:16,547 INFO L231 Difference]: Finished difference. Result has 141 places, 141 transitions, 287 flow [2022-11-02 20:17:16,549 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=287, PETRI_PLACES=141, PETRI_TRANSITIONS=141} [2022-11-02 20:17:16,553 INFO L287 CegarLoopForPetriNet]: 162 programPoint places, -21 predicate places. [2022-11-02 20:17:16,553 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 141 transitions, 287 flow [2022-11-02 20:17:16,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 139.0) internal successors, (278), 2 states have internal predecessors, (278), 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) [2022-11-02 20:17:16,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:17:16,555 INFO L208 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] [2022-11-02 20:17:16,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:17:16,556 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-11-02 20:17:16,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:16,556 INFO L85 PathProgramCache]: Analyzing trace with hash -67255765, now seen corresponding path program 1 times [2022-11-02 20:17:16,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:17:16,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390015308] [2022-11-02 20:17:16,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:16,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:17:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:16,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:17:16,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:17:16,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390015308] [2022-11-02 20:17:16,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390015308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:17:16,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:17:16,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:17:16,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852808340] [2022-11-02 20:17:16,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:17:16,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:17:16,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:17:16,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:17:16,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:17:16,665 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 166 [2022-11-02 20:17:16,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 141 transitions, 287 flow. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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) [2022-11-02 20:17:16,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:17:16,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 166 [2022-11-02 20:17:16,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:17:16,796 INFO L130 PetriNetUnfolder]: 6/231 cut-off events. [2022-11-02 20:17:16,802 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 20:17:16,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 231 events. 6/231 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 394 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 255. Up to 13 conditions per place. [2022-11-02 20:17:16,803 INFO L137 encePairwiseOnDemand]: 163/166 looper letters, 19 selfloop transitions, 2 changer transitions 0/147 dead transitions. [2022-11-02 20:17:16,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 147 transitions, 341 flow [2022-11-02 20:17:16,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:17:16,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:17:16,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 418 transitions. [2022-11-02 20:17:16,806 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8393574297188755 [2022-11-02 20:17:16,807 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 418 transitions. [2022-11-02 20:17:16,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 418 transitions. [2022-11-02 20:17:16,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:17:16,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 418 transitions. [2022-11-02 20:17:16,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 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) [2022-11-02 20:17:16,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 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) [2022-11-02 20:17:16,813 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 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) [2022-11-02 20:17:16,813 INFO L175 Difference]: Start difference. First operand has 141 places, 141 transitions, 287 flow. Second operand 3 states and 418 transitions. [2022-11-02 20:17:16,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 147 transitions, 341 flow [2022-11-02 20:17:16,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 147 transitions, 341 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:17:16,820 INFO L231 Difference]: Finished difference. Result has 142 places, 140 transitions, 289 flow [2022-11-02 20:17:16,820 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=289, PETRI_PLACES=142, PETRI_TRANSITIONS=140} [2022-11-02 20:17:16,821 INFO L287 CegarLoopForPetriNet]: 162 programPoint places, -20 predicate places. [2022-11-02 20:17:16,821 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 140 transitions, 289 flow [2022-11-02 20:17:16,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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) [2022-11-02 20:17:16,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:17:16,822 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-11-02 20:17:16,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:17:16,822 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-11-02 20:17:16,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:16,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1539336791, now seen corresponding path program 1 times [2022-11-02 20:17:16,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:17:16,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991961998] [2022-11-02 20:17:16,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:16,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:17:16,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:17:16,854 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:17:16,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:17:16,906 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:17:16,907 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:17:16,908 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (52 of 53 remaining) [2022-11-02 20:17:16,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (51 of 53 remaining) [2022-11-02 20:17:16,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (50 of 53 remaining) [2022-11-02 20:17:16,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (49 of 53 remaining) [2022-11-02 20:17:16,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (48 of 53 remaining) [2022-11-02 20:17:16,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (47 of 53 remaining) [2022-11-02 20:17:16,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (46 of 53 remaining) [2022-11-02 20:17:16,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (45 of 53 remaining) [2022-11-02 20:17:16,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (44 of 53 remaining) [2022-11-02 20:17:16,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (43 of 53 remaining) [2022-11-02 20:17:16,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (42 of 53 remaining) [2022-11-02 20:17:16,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (41 of 53 remaining) [2022-11-02 20:17:16,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (40 of 53 remaining) [2022-11-02 20:17:16,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (39 of 53 remaining) [2022-11-02 20:17:16,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (38 of 53 remaining) [2022-11-02 20:17:16,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (37 of 53 remaining) [2022-11-02 20:17:16,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (36 of 53 remaining) [2022-11-02 20:17:16,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (35 of 53 remaining) [2022-11-02 20:17:16,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (34 of 53 remaining) [2022-11-02 20:17:16,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (33 of 53 remaining) [2022-11-02 20:17:16,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (32 of 53 remaining) [2022-11-02 20:17:16,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (31 of 53 remaining) [2022-11-02 20:17:16,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (30 of 53 remaining) [2022-11-02 20:17:16,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (29 of 53 remaining) [2022-11-02 20:17:16,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (28 of 53 remaining) [2022-11-02 20:17:16,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (27 of 53 remaining) [2022-11-02 20:17:16,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (26 of 53 remaining) [2022-11-02 20:17:16,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (25 of 53 remaining) [2022-11-02 20:17:16,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (24 of 53 remaining) [2022-11-02 20:17:16,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (23 of 53 remaining) [2022-11-02 20:17:16,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (22 of 53 remaining) [2022-11-02 20:17:16,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 53 remaining) [2022-11-02 20:17:16,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 53 remaining) [2022-11-02 20:17:16,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 53 remaining) [2022-11-02 20:17:16,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (18 of 53 remaining) [2022-11-02 20:17:16,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (17 of 53 remaining) [2022-11-02 20:17:16,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (16 of 53 remaining) [2022-11-02 20:17:16,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (15 of 53 remaining) [2022-11-02 20:17:16,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (14 of 53 remaining) [2022-11-02 20:17:16,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (13 of 53 remaining) [2022-11-02 20:17:16,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (12 of 53 remaining) [2022-11-02 20:17:16,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (11 of 53 remaining) [2022-11-02 20:17:16,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (10 of 53 remaining) [2022-11-02 20:17:16,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (9 of 53 remaining) [2022-11-02 20:17:16,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (8 of 53 remaining) [2022-11-02 20:17:16,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (7 of 53 remaining) [2022-11-02 20:17:16,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (6 of 53 remaining) [2022-11-02 20:17:16,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (5 of 53 remaining) [2022-11-02 20:17:16,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (4 of 53 remaining) [2022-11-02 20:17:16,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (3 of 53 remaining) [2022-11-02 20:17:16,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (2 of 53 remaining) [2022-11-02 20:17:16,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (1 of 53 remaining) [2022-11-02 20:17:16,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (0 of 53 remaining) [2022-11-02 20:17:16,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:17:16,940 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-02 20:17:16,943 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:17:16,943 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-02 20:17:17,071 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:17:17,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 287 places, 295 transitions, 602 flow [2022-11-02 20:17:17,182 INFO L130 PetriNetUnfolder]: 15/319 cut-off events. [2022-11-02 20:17:17,182 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:17:17,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 319 events. 15/319 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 886 event pairs, 0 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 269. Up to 6 conditions per place. [2022-11-02 20:17:17,191 INFO L82 GeneralOperation]: Start removeDead. Operand has 287 places, 295 transitions, 602 flow [2022-11-02 20:17:17,199 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 287 places, 295 transitions, 602 flow [2022-11-02 20:17:17,200 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:17:17,202 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;@4bd85471, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:17:17,202 INFO L358 AbstractCegarLoop]: Starting to check reachability of 79 error locations. [2022-11-02 20:17:17,206 INFO L130 PetriNetUnfolder]: 2/39 cut-off events. [2022-11-02 20:17:17,206 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:17:17,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:17:17,207 INFO L208 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] [2022-11-02 20:17:17,207 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 75 more)] === [2022-11-02 20:17:17,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:17,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1923334505, now seen corresponding path program 1 times [2022-11-02 20:17:17,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:17:17,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59187707] [2022-11-02 20:17:17,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:17,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:17:17,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:17,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:17:17,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:17:17,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59187707] [2022-11-02 20:17:17,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59187707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:17:17,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:17:17,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:17:17,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838579263] [2022-11-02 20:17:17,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:17:17,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:17:17,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:17:17,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:17:17,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:17:17,427 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 295 [2022-11-02 20:17:17,428 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 295 transitions, 602 flow. Second operand has 2 states, 2 states have (on average 242.0) internal successors, (484), 2 states have internal predecessors, (484), 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) [2022-11-02 20:17:17,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:17:17,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 295 [2022-11-02 20:17:17,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:17:17,858 INFO L130 PetriNetUnfolder]: 112/1291 cut-off events. [2022-11-02 20:17:17,858 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-11-02 20:17:17,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1480 conditions, 1291 events. 112/1291 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 8090 event pairs, 52 based on Foata normal form. 91/1209 useless extension candidates. Maximal degree in co-relation 1284. Up to 161 conditions per place. [2022-11-02 20:17:17,869 INFO L137 encePairwiseOnDemand]: 259/295 looper letters, 18 selfloop transitions, 0 changer transitions 0/252 dead transitions. [2022-11-02 20:17:17,870 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 252 transitions, 552 flow [2022-11-02 20:17:17,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:17:17,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:17:17,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 536 transitions. [2022-11-02 20:17:17,872 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9084745762711864 [2022-11-02 20:17:17,872 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 536 transitions. [2022-11-02 20:17:17,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 536 transitions. [2022-11-02 20:17:17,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:17:17,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 536 transitions. [2022-11-02 20:17:17,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 268.0) internal successors, (536), 2 states have internal predecessors, (536), 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) [2022-11-02 20:17:17,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 295.0) internal successors, (885), 3 states have internal predecessors, (885), 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) [2022-11-02 20:17:17,876 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 295.0) internal successors, (885), 3 states have internal predecessors, (885), 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) [2022-11-02 20:17:17,877 INFO L175 Difference]: Start difference. First operand has 287 places, 295 transitions, 602 flow. Second operand 2 states and 536 transitions. [2022-11-02 20:17:17,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 252 transitions, 552 flow [2022-11-02 20:17:17,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 252 transitions, 550 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-02 20:17:17,882 INFO L231 Difference]: Finished difference. Result has 250 places, 252 transitions, 514 flow [2022-11-02 20:17:17,883 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=514, PETRI_PLACES=250, PETRI_TRANSITIONS=252} [2022-11-02 20:17:17,884 INFO L287 CegarLoopForPetriNet]: 287 programPoint places, -37 predicate places. [2022-11-02 20:17:17,884 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 252 transitions, 514 flow [2022-11-02 20:17:17,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 242.0) internal successors, (484), 2 states have internal predecessors, (484), 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) [2022-11-02 20:17:17,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:17:17,885 INFO L208 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] [2022-11-02 20:17:17,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:17:17,885 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 75 more)] === [2022-11-02 20:17:17,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:17,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1488564395, now seen corresponding path program 1 times [2022-11-02 20:17:17,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:17:17,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064818018] [2022-11-02 20:17:17,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:17,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:17:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:17,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:17:17,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:17:17,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064818018] [2022-11-02 20:17:17,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064818018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:17:17,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:17:17,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:17:17,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074869708] [2022-11-02 20:17:17,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:17:17,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:17:17,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:17:17,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:17:17,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:17:17,919 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 295 [2022-11-02 20:17:17,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 252 transitions, 514 flow. Second operand has 3 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 states have internal predecessors, (691), 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) [2022-11-02 20:17:17,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:17:17,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 295 [2022-11-02 20:17:17,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:17:18,823 INFO L130 PetriNetUnfolder]: 476/4187 cut-off events. [2022-11-02 20:17:18,824 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2022-11-02 20:17:18,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5010 conditions, 4187 events. 476/4187 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 39187 event pairs, 107 based on Foata normal form. 0/3611 useless extension candidates. Maximal degree in co-relation 5005. Up to 414 conditions per place. [2022-11-02 20:17:18,862 INFO L137 encePairwiseOnDemand]: 287/295 looper letters, 51 selfloop transitions, 6 changer transitions 0/279 dead transitions. [2022-11-02 20:17:18,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 279 transitions, 687 flow [2022-11-02 20:17:18,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:17:18,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:17:18,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 746 transitions. [2022-11-02 20:17:18,865 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8429378531073446 [2022-11-02 20:17:18,865 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 746 transitions. [2022-11-02 20:17:18,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 746 transitions. [2022-11-02 20:17:18,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:17:18,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 746 transitions. [2022-11-02 20:17:18,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 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) [2022-11-02 20:17:18,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 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) [2022-11-02 20:17:18,871 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 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) [2022-11-02 20:17:18,871 INFO L175 Difference]: Start difference. First operand has 250 places, 252 transitions, 514 flow. Second operand 3 states and 746 transitions. [2022-11-02 20:17:18,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 279 transitions, 687 flow [2022-11-02 20:17:18,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 279 transitions, 687 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:17:18,877 INFO L231 Difference]: Finished difference. Result has 254 places, 258 transitions, 566 flow [2022-11-02 20:17:18,877 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=566, PETRI_PLACES=254, PETRI_TRANSITIONS=258} [2022-11-02 20:17:18,878 INFO L287 CegarLoopForPetriNet]: 287 programPoint places, -33 predicate places. [2022-11-02 20:17:18,878 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 258 transitions, 566 flow [2022-11-02 20:17:18,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 states have internal predecessors, (691), 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) [2022-11-02 20:17:18,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:17:18,883 INFO L208 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, 1] [2022-11-02 20:17:18,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:17:18,883 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 75 more)] === [2022-11-02 20:17:18,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:18,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1315066473, now seen corresponding path program 1 times [2022-11-02 20:17:18,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:17:18,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744944876] [2022-11-02 20:17:18,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:18,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:17:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:18,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:17:18,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:17:18,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744944876] [2022-11-02 20:17:18,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744944876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:17:18,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:17:18,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:17:18,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039736815] [2022-11-02 20:17:18,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:17:18,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:17:18,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:17:18,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:17:18,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:17:18,924 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 295 [2022-11-02 20:17:18,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 258 transitions, 566 flow. Second operand has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 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) [2022-11-02 20:17:18,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:17:18,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 295 [2022-11-02 20:17:18,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:17:20,364 INFO L130 PetriNetUnfolder]: 1099/5993 cut-off events. [2022-11-02 20:17:20,365 INFO L131 PetriNetUnfolder]: For 119/119 co-relation queries the response was YES. [2022-11-02 20:17:20,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8060 conditions, 5993 events. 1099/5993 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 56602 event pairs, 553 based on Foata normal form. 0/5101 useless extension candidates. Maximal degree in co-relation 8053. Up to 1730 conditions per place. [2022-11-02 20:17:20,431 INFO L137 encePairwiseOnDemand]: 287/295 looper letters, 52 selfloop transitions, 7 changer transitions 0/278 dead transitions. [2022-11-02 20:17:20,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 278 transitions, 729 flow [2022-11-02 20:17:20,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:17:20,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:17:20,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 720 transitions. [2022-11-02 20:17:20,434 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8135593220338984 [2022-11-02 20:17:20,434 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 720 transitions. [2022-11-02 20:17:20,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 720 transitions. [2022-11-02 20:17:20,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:17:20,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 720 transitions. [2022-11-02 20:17:20,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 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) [2022-11-02 20:17:20,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 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) [2022-11-02 20:17:20,441 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 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) [2022-11-02 20:17:20,441 INFO L175 Difference]: Start difference. First operand has 254 places, 258 transitions, 566 flow. Second operand 3 states and 720 transitions. [2022-11-02 20:17:20,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 278 transitions, 729 flow [2022-11-02 20:17:20,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 278 transitions, 717 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:17:20,450 INFO L231 Difference]: Finished difference. Result has 256 places, 264 transitions, 608 flow [2022-11-02 20:17:20,451 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=608, PETRI_PLACES=256, PETRI_TRANSITIONS=264} [2022-11-02 20:17:20,452 INFO L287 CegarLoopForPetriNet]: 287 programPoint places, -31 predicate places. [2022-11-02 20:17:20,452 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 264 transitions, 608 flow [2022-11-02 20:17:20,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 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) [2022-11-02 20:17:20,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:17:20,453 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:17:20,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:17:20,454 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 75 more)] === [2022-11-02 20:17:20,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:20,455 INFO L85 PathProgramCache]: Analyzing trace with hash -897471547, now seen corresponding path program 1 times [2022-11-02 20:17:20,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:17:20,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937720483] [2022-11-02 20:17:20,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:20,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:17:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:17:20,473 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:17:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:17:20,496 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:17:20,497 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:17:20,497 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (78 of 79 remaining) [2022-11-02 20:17:20,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (77 of 79 remaining) [2022-11-02 20:17:20,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (76 of 79 remaining) [2022-11-02 20:17:20,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (75 of 79 remaining) [2022-11-02 20:17:20,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (74 of 79 remaining) [2022-11-02 20:17:20,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (73 of 79 remaining) [2022-11-02 20:17:20,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (72 of 79 remaining) [2022-11-02 20:17:20,499 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (71 of 79 remaining) [2022-11-02 20:17:20,499 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (70 of 79 remaining) [2022-11-02 20:17:20,499 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (69 of 79 remaining) [2022-11-02 20:17:20,499 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (68 of 79 remaining) [2022-11-02 20:17:20,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (67 of 79 remaining) [2022-11-02 20:17:20,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (66 of 79 remaining) [2022-11-02 20:17:20,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (65 of 79 remaining) [2022-11-02 20:17:20,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (64 of 79 remaining) [2022-11-02 20:17:20,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (63 of 79 remaining) [2022-11-02 20:17:20,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (62 of 79 remaining) [2022-11-02 20:17:20,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (61 of 79 remaining) [2022-11-02 20:17:20,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (60 of 79 remaining) [2022-11-02 20:17:20,502 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (59 of 79 remaining) [2022-11-02 20:17:20,502 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (58 of 79 remaining) [2022-11-02 20:17:20,502 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (57 of 79 remaining) [2022-11-02 20:17:20,502 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (56 of 79 remaining) [2022-11-02 20:17:20,502 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (55 of 79 remaining) [2022-11-02 20:17:20,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (54 of 79 remaining) [2022-11-02 20:17:20,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (53 of 79 remaining) [2022-11-02 20:17:20,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (52 of 79 remaining) [2022-11-02 20:17:20,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (51 of 79 remaining) [2022-11-02 20:17:20,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (50 of 79 remaining) [2022-11-02 20:17:20,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (49 of 79 remaining) [2022-11-02 20:17:20,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (48 of 79 remaining) [2022-11-02 20:17:20,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (47 of 79 remaining) [2022-11-02 20:17:20,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (46 of 79 remaining) [2022-11-02 20:17:20,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (45 of 79 remaining) [2022-11-02 20:17:20,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (44 of 79 remaining) [2022-11-02 20:17:20,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (43 of 79 remaining) [2022-11-02 20:17:20,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (42 of 79 remaining) [2022-11-02 20:17:20,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (41 of 79 remaining) [2022-11-02 20:17:20,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (40 of 79 remaining) [2022-11-02 20:17:20,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (39 of 79 remaining) [2022-11-02 20:17:20,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (38 of 79 remaining) [2022-11-02 20:17:20,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (37 of 79 remaining) [2022-11-02 20:17:20,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (36 of 79 remaining) [2022-11-02 20:17:20,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (35 of 79 remaining) [2022-11-02 20:17:20,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (34 of 79 remaining) [2022-11-02 20:17:20,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (33 of 79 remaining) [2022-11-02 20:17:20,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (32 of 79 remaining) [2022-11-02 20:17:20,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (31 of 79 remaining) [2022-11-02 20:17:20,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (30 of 79 remaining) [2022-11-02 20:17:20,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (29 of 79 remaining) [2022-11-02 20:17:20,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (28 of 79 remaining) [2022-11-02 20:17:20,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (27 of 79 remaining) [2022-11-02 20:17:20,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (26 of 79 remaining) [2022-11-02 20:17:20,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (25 of 79 remaining) [2022-11-02 20:17:20,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (24 of 79 remaining) [2022-11-02 20:17:20,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (23 of 79 remaining) [2022-11-02 20:17:20,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (22 of 79 remaining) [2022-11-02 20:17:20,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 79 remaining) [2022-11-02 20:17:20,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 79 remaining) [2022-11-02 20:17:20,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 79 remaining) [2022-11-02 20:17:20,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (18 of 79 remaining) [2022-11-02 20:17:20,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (17 of 79 remaining) [2022-11-02 20:17:20,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (16 of 79 remaining) [2022-11-02 20:17:20,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (15 of 79 remaining) [2022-11-02 20:17:20,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (14 of 79 remaining) [2022-11-02 20:17:20,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (13 of 79 remaining) [2022-11-02 20:17:20,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (12 of 79 remaining) [2022-11-02 20:17:20,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (11 of 79 remaining) [2022-11-02 20:17:20,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (10 of 79 remaining) [2022-11-02 20:17:20,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (9 of 79 remaining) [2022-11-02 20:17:20,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (8 of 79 remaining) [2022-11-02 20:17:20,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (7 of 79 remaining) [2022-11-02 20:17:20,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (6 of 79 remaining) [2022-11-02 20:17:20,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (5 of 79 remaining) [2022-11-02 20:17:20,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (4 of 79 remaining) [2022-11-02 20:17:20,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (3 of 79 remaining) [2022-11-02 20:17:20,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (2 of 79 remaining) [2022-11-02 20:17:20,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (1 of 79 remaining) [2022-11-02 20:17:20,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (0 of 79 remaining) [2022-11-02 20:17:20,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:17:20,516 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-02 20:17:20,517 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:17:20,517 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-02 20:17:20,669 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:17:20,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 412 places, 424 transitions, 869 flow [2022-11-02 20:17:20,840 INFO L130 PetriNetUnfolder]: 22/461 cut-off events. [2022-11-02 20:17:20,840 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-02 20:17:20,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 477 conditions, 461 events. 22/461 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1735 event pairs, 0 based on Foata normal form. 0/357 useless extension candidates. Maximal degree in co-relation 397. Up to 8 conditions per place. [2022-11-02 20:17:20,920 INFO L82 GeneralOperation]: Start removeDead. Operand has 412 places, 424 transitions, 869 flow [2022-11-02 20:17:20,928 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 412 places, 424 transitions, 869 flow [2022-11-02 20:17:20,929 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:17:20,930 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;@4bd85471, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:17:20,930 INFO L358 AbstractCegarLoop]: Starting to check reachability of 105 error locations. [2022-11-02 20:17:20,933 INFO L130 PetriNetUnfolder]: 1/37 cut-off events. [2022-11-02 20:17:20,934 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:17:20,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:17:20,934 INFO L208 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] [2022-11-02 20:17:20,934 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 101 more)] === [2022-11-02 20:17:20,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:20,935 INFO L85 PathProgramCache]: Analyzing trace with hash -849511191, now seen corresponding path program 1 times [2022-11-02 20:17:20,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:17:20,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153346411] [2022-11-02 20:17:20,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:20,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:17:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:21,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:17:21,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:17:21,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153346411] [2022-11-02 20:17:21,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153346411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:17:21,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:17:21,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:17:21,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230195603] [2022-11-02 20:17:21,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:17:21,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:17:21,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:17:21,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:17:21,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:17:21,071 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 424 [2022-11-02 20:17:21,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 424 transitions, 869 flow. Second operand has 2 states, 2 states have (on average 345.0) internal successors, (690), 2 states have internal predecessors, (690), 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) [2022-11-02 20:17:21,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:17:21,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 424 [2022-11-02 20:17:21,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:17:24,078 INFO L130 PetriNetUnfolder]: 1750/12254 cut-off events. [2022-11-02 20:17:24,078 INFO L131 PetriNetUnfolder]: For 391/391 co-relation queries the response was YES. [2022-11-02 20:17:24,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14730 conditions, 12254 events. 1750/12254 cut-off events. For 391/391 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 137453 event pairs, 962 based on Foata normal form. 956/11628 useless extension candidates. Maximal degree in co-relation 12884. Up to 2202 conditions per place. [2022-11-02 20:17:24,291 INFO L137 encePairwiseOnDemand]: 371/424 looper letters, 27 selfloop transitions, 0 changer transitions 0/363 dead transitions. [2022-11-02 20:17:24,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 363 transitions, 801 flow [2022-11-02 20:17:24,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:17:24,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:17:24,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 768 transitions. [2022-11-02 20:17:24,294 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9056603773584906 [2022-11-02 20:17:24,294 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 768 transitions. [2022-11-02 20:17:24,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 768 transitions. [2022-11-02 20:17:24,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:17:24,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 768 transitions. [2022-11-02 20:17:24,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 384.0) internal successors, (768), 2 states have internal predecessors, (768), 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) [2022-11-02 20:17:24,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 424.0) internal successors, (1272), 3 states have internal predecessors, (1272), 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) [2022-11-02 20:17:24,299 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 424.0) internal successors, (1272), 3 states have internal predecessors, (1272), 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) [2022-11-02 20:17:24,300 INFO L175 Difference]: Start difference. First operand has 412 places, 424 transitions, 869 flow. Second operand 2 states and 768 transitions. [2022-11-02 20:17:24,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 363 transitions, 801 flow [2022-11-02 20:17:24,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 363 transitions, 795 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-11-02 20:17:24,307 INFO L231 Difference]: Finished difference. Result has 359 places, 363 transitions, 741 flow [2022-11-02 20:17:24,308 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=741, PETRI_PLACES=359, PETRI_TRANSITIONS=363} [2022-11-02 20:17:24,309 INFO L287 CegarLoopForPetriNet]: 412 programPoint places, -53 predicate places. [2022-11-02 20:17:24,309 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 363 transitions, 741 flow [2022-11-02 20:17:24,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 345.0) internal successors, (690), 2 states have internal predecessors, (690), 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) [2022-11-02 20:17:24,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:17:24,310 INFO L208 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] [2022-11-02 20:17:24,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:17:24,311 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 101 more)] === [2022-11-02 20:17:24,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:24,311 INFO L85 PathProgramCache]: Analyzing trace with hash -336412373, now seen corresponding path program 1 times [2022-11-02 20:17:24,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:17:24,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147360785] [2022-11-02 20:17:24,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:24,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:17:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:24,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:17:24,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:17:24,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147360785] [2022-11-02 20:17:24,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147360785] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:17:24,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:17:24,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:17:24,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86754130] [2022-11-02 20:17:24,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:17:24,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:17:24,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:17:24,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:17:24,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:17:24,350 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 424 [2022-11-02 20:17:24,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 363 transitions, 741 flow. Second operand has 3 states, 3 states have (on average 327.3333333333333) internal successors, (982), 3 states have internal predecessors, (982), 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) [2022-11-02 20:17:24,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:17:24,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 424 [2022-11-02 20:17:24,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:17:37,886 INFO L130 PetriNetUnfolder]: 14352/75041 cut-off events. [2022-11-02 20:17:37,886 INFO L131 PetriNetUnfolder]: For 973/973 co-relation queries the response was YES. [2022-11-02 20:17:38,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95354 conditions, 75041 events. 14352/75041 cut-off events. For 973/973 co-relation queries the response was YES. Maximal size of possible extension queue 1430. Compared 1144143 event pairs, 3983 based on Foata normal form. 0/64237 useless extension candidates. Maximal degree in co-relation 95348. Up to 10268 conditions per place. [2022-11-02 20:17:39,102 INFO L137 encePairwiseOnDemand]: 412/424 looper letters, 77 selfloop transitions, 9 changer transitions 0/404 dead transitions. [2022-11-02 20:17:39,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 404 transitions, 1005 flow [2022-11-02 20:17:39,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:17:39,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:17:39,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1067 transitions. [2022-11-02 20:17:39,107 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8388364779874213 [2022-11-02 20:17:39,107 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1067 transitions. [2022-11-02 20:17:39,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1067 transitions. [2022-11-02 20:17:39,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:17:39,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1067 transitions. [2022-11-02 20:17:39,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 355.6666666666667) internal successors, (1067), 3 states have internal predecessors, (1067), 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) [2022-11-02 20:17:39,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 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) [2022-11-02 20:17:39,117 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 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) [2022-11-02 20:17:39,117 INFO L175 Difference]: Start difference. First operand has 359 places, 363 transitions, 741 flow. Second operand 3 states and 1067 transitions. [2022-11-02 20:17:39,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 404 transitions, 1005 flow [2022-11-02 20:17:39,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 404 transitions, 1005 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:17:39,127 INFO L231 Difference]: Finished difference. Result has 363 places, 372 transitions, 819 flow [2022-11-02 20:17:39,128 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=819, PETRI_PLACES=363, PETRI_TRANSITIONS=372} [2022-11-02 20:17:39,129 INFO L287 CegarLoopForPetriNet]: 412 programPoint places, -49 predicate places. [2022-11-02 20:17:39,130 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 372 transitions, 819 flow [2022-11-02 20:17:39,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 327.3333333333333) internal successors, (982), 3 states have internal predecessors, (982), 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) [2022-11-02 20:17:39,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:17:39,131 INFO L208 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, 1] [2022-11-02 20:17:39,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:17:39,131 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 101 more)] === [2022-11-02 20:17:39,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:39,132 INFO L85 PathProgramCache]: Analyzing trace with hash -85487081, now seen corresponding path program 1 times [2022-11-02 20:17:39,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:17:39,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002534971] [2022-11-02 20:17:39,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:39,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:17:39,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:39,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:17:39,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:17:39,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002534971] [2022-11-02 20:17:39,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002534971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:17:39,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:17:39,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:17:39,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903621649] [2022-11-02 20:17:39,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:17:39,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:17:39,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:17:39,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:17:39,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:17:39,186 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 424 [2022-11-02 20:17:39,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 372 transitions, 819 flow. Second operand has 3 states, 3 states have (on average 316.0) internal successors, (948), 3 states have internal predecessors, (948), 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) [2022-11-02 20:17:39,188 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:17:39,188 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 424 [2022-11-02 20:17:39,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand