./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9163ea44-a6f2-4bfd-a837-2c8353dd5f69/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9163ea44-a6f2-4bfd-a837-2c8353dd5f69/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9163ea44-a6f2-4bfd-a837-2c8353dd5f69/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9163ea44-a6f2-4bfd-a837-2c8353dd5f69/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9163ea44-a6f2-4bfd-a837-2c8353dd5f69/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9163ea44-a6f2-4bfd-a837-2c8353dd5f69/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:20:13,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:20:13,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:20:13,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:20:13,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:20:13,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:20:13,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:20:13,893 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:20:13,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:20:13,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:20:13,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:20:13,898 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:20:13,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:20:13,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:20:13,902 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:20:13,903 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:20:13,904 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:20:13,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:20:13,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:20:13,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:20:13,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:20:13,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:20:13,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:20:13,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:20:13,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:20:13,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:20:13,919 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:20:13,921 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:20:13,921 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:20:13,922 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:20:13,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:20:13,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:20:13,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:20:13,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:20:13,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:20:13,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:20:13,928 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:20:13,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:20:13,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:20:13,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:20:13,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:20:13,932 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9163ea44-a6f2-4bfd-a837-2c8353dd5f69/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-16 11:20:13,956 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:20:13,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:20:13,957 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:20:13,957 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:20:13,958 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:20:13,958 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:20:13,959 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:20:13,959 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:20:13,959 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:20:13,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:20:13,960 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:20:13,960 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:20:13,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:20:13,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:20:13,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:20:13,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:20:13,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:20:13,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:20:13,961 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-16 11:20:13,961 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:20:13,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:20:13,962 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:20:13,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:20:13,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:20:13,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:20:13,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:20:13,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:20:13,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:20:13,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:20:13,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:20:13,964 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:20:13,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:20:13,964 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:20:13,964 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:20:13,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:20:13,965 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_9163ea44-a6f2-4bfd-a837-2c8353dd5f69/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9163ea44-a6f2-4bfd-a837-2c8353dd5f69/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 [2022-11-16 11:20:14,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:20:14,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:20:14,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:20:14,313 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:20:14,318 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:20:14,319 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9163ea44-a6f2-4bfd-a837-2c8353dd5f69/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2022-11-16 11:20:14,386 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9163ea44-a6f2-4bfd-a837-2c8353dd5f69/bin/uautomizer-tPACEb0tL8/data/65d624f71/7ef2ac57b54440658c3b0f2f49928a81/FLAGc6a207ca5 [2022-11-16 11:20:14,992 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:20:14,993 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9163ea44-a6f2-4bfd-a837-2c8353dd5f69/sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2022-11-16 11:20:15,010 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9163ea44-a6f2-4bfd-a837-2c8353dd5f69/bin/uautomizer-tPACEb0tL8/data/65d624f71/7ef2ac57b54440658c3b0f2f49928a81/FLAGc6a207ca5 [2022-11-16 11:20:15,239 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9163ea44-a6f2-4bfd-a837-2c8353dd5f69/bin/uautomizer-tPACEb0tL8/data/65d624f71/7ef2ac57b54440658c3b0f2f49928a81 [2022-11-16 11:20:15,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:20:15,246 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:20:15,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:20:15,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:20:15,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:20:15,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:20:15" (1/1) ... [2022-11-16 11:20:15,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@260311b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:20:15, skipping insertion in model container [2022-11-16 11:20:15,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:20:15" (1/1) ... [2022-11-16 11:20:15,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:20:15,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:20:15,795 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9163ea44-a6f2-4bfd-a837-2c8353dd5f69/sv-benchmarks/c/pthread-ext/29_conditionals_vs.i[30422,30435] [2022-11-16 11:20:15,803 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:20:15,812 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:20:15,865 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9163ea44-a6f2-4bfd-a837-2c8353dd5f69/sv-benchmarks/c/pthread-ext/29_conditionals_vs.i[30422,30435] [2022-11-16 11:20:15,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:20:15,912 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:20:15,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:20:15 WrapperNode [2022-11-16 11:20:15,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:20:15,914 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:20:15,915 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:20:15,915 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:20:15,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:20:15" (1/1) ... [2022-11-16 11:20:15,953 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:20:15" (1/1) ... [2022-11-16 11:20:15,978 INFO L138 Inliner]: procedures = 170, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 71 [2022-11-16 11:20:15,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:20:15,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:20:15,981 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:20:15,981 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:20:15,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:20:15" (1/1) ... [2022-11-16 11:20:15,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:20:15" (1/1) ... [2022-11-16 11:20:15,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:20:15" (1/1) ... [2022-11-16 11:20:15,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:20:15" (1/1) ... [2022-11-16 11:20:15,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:20:15" (1/1) ... [2022-11-16 11:20:15,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:20:15" (1/1) ... [2022-11-16 11:20:16,001 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:20:15" (1/1) ... [2022-11-16 11:20:16,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:20:15" (1/1) ... [2022-11-16 11:20:16,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:20:16,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:20:16,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:20:16,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:20:16,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:20:15" (1/1) ... [2022-11-16 11:20:16,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:20:16,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9163ea44-a6f2-4bfd-a837-2c8353dd5f69/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:20:16,039 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9163ea44-a6f2-4bfd-a837-2c8353dd5f69/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:20:16,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9163ea44-a6f2-4bfd-a837-2c8353dd5f69/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:20:16,076 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-16 11:20:16,076 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-16 11:20:16,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:20:16,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:20:16,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:20:16,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:20:16,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:20:16,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:20:16,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:20:16,080 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:20:16,211 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:20:16,213 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:20:16,449 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:20:16,550 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:20:16,550 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:20:16,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:20:16 BoogieIcfgContainer [2022-11-16 11:20:16,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:20:16,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:20:16,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:20:16,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:20:16,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:20:15" (1/3) ... [2022-11-16 11:20:16,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29c99e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:20:16, skipping insertion in model container [2022-11-16 11:20:16,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:20:15" (2/3) ... [2022-11-16 11:20:16,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29c99e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:20:16, skipping insertion in model container [2022-11-16 11:20:16,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:20:16" (3/3) ... [2022-11-16 11:20:16,573 INFO L112 eAbstractionObserver]: Analyzing ICFG 29_conditionals_vs.i [2022-11-16 11:20:16,581 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:20:16,591 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:20:16,592 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-16 11:20:16,592 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:20:16,666 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:20:16,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 59 transitions, 123 flow [2022-11-16 11:20:16,772 INFO L130 PetriNetUnfolder]: 6/70 cut-off events. [2022-11-16 11:20:16,773 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:20:16,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 70 events. 6/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 43. Up to 4 conditions per place. [2022-11-16 11:20:16,781 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 59 transitions, 123 flow [2022-11-16 11:20:16,787 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 59 transitions, 123 flow [2022-11-16 11:20:16,801 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:20:16,809 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;@768176d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:20:16,810 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-16 11:20:16,843 INFO L130 PetriNetUnfolder]: 2/45 cut-off events. [2022-11-16 11:20:16,843 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:20:16,844 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:20:16,845 INFO L209 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] [2022-11-16 11:20:16,845 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-11-16 11:20:16,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:20:16,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1931193828, now seen corresponding path program 1 times [2022-11-16 11:20:16,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:20:16,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654313696] [2022-11-16 11:20:16,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:20:16,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:20:17,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:20:17,009 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:20:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:20:17,077 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:20:17,080 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:20:17,081 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2022-11-16 11:20:17,084 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2022-11-16 11:20:17,084 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2022-11-16 11:20:17,085 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2022-11-16 11:20:17,086 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2022-11-16 11:20:17,086 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2022-11-16 11:20:17,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2022-11-16 11:20:17,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2022-11-16 11:20:17,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2022-11-16 11:20:17,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:20:17,089 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-16 11:20:17,096 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:20:17,096 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 11:20:17,151 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:20:17,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 90 transitions, 192 flow [2022-11-16 11:20:17,218 INFO L130 PetriNetUnfolder]: 11/114 cut-off events. [2022-11-16 11:20:17,218 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 11:20:17,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 114 events. 11/114 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 210 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 73. Up to 6 conditions per place. [2022-11-16 11:20:17,220 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 90 transitions, 192 flow [2022-11-16 11:20:17,226 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 90 transitions, 192 flow [2022-11-16 11:20:17,229 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:20:17,231 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;@768176d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:20:17,231 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-16 11:20:17,260 INFO L130 PetriNetUnfolder]: 3/59 cut-off events. [2022-11-16 11:20:17,260 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:20:17,260 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:20:17,260 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:20:17,261 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2022-11-16 11:20:17,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:20:17,261 INFO L85 PathProgramCache]: Analyzing trace with hash -2023728292, now seen corresponding path program 1 times [2022-11-16 11:20:17,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:20:17,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883346061] [2022-11-16 11:20:17,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:20:17,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:20:17,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:17,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:20:17,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:20:17,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883346061] [2022-11-16 11:20:17,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883346061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:20:17,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:20:17,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:20:17,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68983704] [2022-11-16 11:20:17,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:20:17,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:20:17,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:20:17,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:20:17,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:20:17,473 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 90 [2022-11-16 11:20:17,477 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 90 transitions, 192 flow. Second operand has 2 states, 2 states have (on average 71.0) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:17,477 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:20:17,477 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 90 [2022-11-16 11:20:17,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:20:17,567 INFO L130 PetriNetUnfolder]: 18/151 cut-off events. [2022-11-16 11:20:17,567 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-11-16 11:20:17,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 151 events. 18/151 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 380 event pairs, 6 based on Foata normal form. 20/154 useless extension candidates. Maximal degree in co-relation 54. Up to 19 conditions per place. [2022-11-16 11:20:17,570 INFO L137 encePairwiseOnDemand]: 78/90 looper letters, 6 selfloop transitions, 0 changer transitions 0/71 dead transitions. [2022-11-16 11:20:17,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 71 transitions, 166 flow [2022-11-16 11:20:17,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:20:17,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:20:17,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 158 transitions. [2022-11-16 11:20:17,589 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8777777777777778 [2022-11-16 11:20:17,591 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 158 transitions. [2022-11-16 11:20:17,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 158 transitions. [2022-11-16 11:20:17,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:20:17,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 158 transitions. [2022-11-16 11:20:17,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 79.0) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:17,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:17,607 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:17,609 INFO L175 Difference]: Start difference. First operand has 86 places, 90 transitions, 192 flow. Second operand 2 states and 158 transitions. [2022-11-16 11:20:17,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 71 transitions, 166 flow [2022-11-16 11:20:17,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 71 transitions, 164 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-16 11:20:17,619 INFO L231 Difference]: Finished difference. Result has 71 places, 71 transitions, 152 flow [2022-11-16 11:20:17,622 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=152, PETRI_PLACES=71, PETRI_TRANSITIONS=71} [2022-11-16 11:20:17,627 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, -15 predicate places. [2022-11-16 11:20:17,627 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 71 transitions, 152 flow [2022-11-16 11:20:17,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 71.0) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:17,628 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:20:17,629 INFO L209 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] [2022-11-16 11:20:17,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:20:17,630 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2022-11-16 11:20:17,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:20:17,630 INFO L85 PathProgramCache]: Analyzing trace with hash 2055891489, now seen corresponding path program 1 times [2022-11-16 11:20:17,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:20:17,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971634152] [2022-11-16 11:20:17,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:20:17,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:20:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:20:17,686 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:20:17,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:20:17,719 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:20:17,720 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:20:17,720 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-16 11:20:17,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2022-11-16 11:20:17,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2022-11-16 11:20:17,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2022-11-16 11:20:17,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2022-11-16 11:20:17,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2022-11-16 11:20:17,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2022-11-16 11:20:17,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2022-11-16 11:20:17,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2022-11-16 11:20:17,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2022-11-16 11:20:17,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2022-11-16 11:20:17,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2022-11-16 11:20:17,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2022-11-16 11:20:17,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:20:17,724 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-16 11:20:17,725 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:20:17,725 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-16 11:20:17,772 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:20:17,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 121 transitions, 263 flow [2022-11-16 11:20:17,804 INFO L130 PetriNetUnfolder]: 16/158 cut-off events. [2022-11-16 11:20:17,804 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-16 11:20:17,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 158 events. 16/158 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 378 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 118. Up to 8 conditions per place. [2022-11-16 11:20:17,810 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 121 transitions, 263 flow [2022-11-16 11:20:17,814 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 121 transitions, 263 flow [2022-11-16 11:20:17,817 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:20:17,821 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;@768176d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:20:17,821 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-16 11:20:17,827 INFO L130 PetriNetUnfolder]: 3/58 cut-off events. [2022-11-16 11:20:17,834 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:20:17,834 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:20:17,834 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:20:17,835 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2022-11-16 11:20:17,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:20:17,835 INFO L85 PathProgramCache]: Analyzing trace with hash 257169246, now seen corresponding path program 1 times [2022-11-16 11:20:17,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:20:17,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883949684] [2022-11-16 11:20:17,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:20:17,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:20:17,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:17,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:20:17,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:20:17,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883949684] [2022-11-16 11:20:17,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883949684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:20:17,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:20:17,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:20:17,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554735166] [2022-11-16 11:20:17,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:20:17,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:20:17,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:20:17,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:20:17,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:20:17,932 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 121 [2022-11-16 11:20:17,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 121 transitions, 263 flow. Second operand has 2 states, 2 states have (on average 93.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:17,932 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:20:17,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 121 [2022-11-16 11:20:17,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:20:18,031 INFO L130 PetriNetUnfolder]: 81/472 cut-off events. [2022-11-16 11:20:18,031 INFO L131 PetriNetUnfolder]: For 91/91 co-relation queries the response was YES. [2022-11-16 11:20:18,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 632 conditions, 472 events. 81/472 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2379 event pairs, 42 based on Foata normal form. 74/490 useless extension candidates. Maximal degree in co-relation 181. Up to 82 conditions per place. [2022-11-16 11:20:18,036 INFO L137 encePairwiseOnDemand]: 104/121 looper letters, 9 selfloop transitions, 0 changer transitions 0/96 dead transitions. [2022-11-16 11:20:18,037 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 96 transitions, 231 flow [2022-11-16 11:20:18,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:20:18,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:20:18,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 210 transitions. [2022-11-16 11:20:18,039 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8677685950413223 [2022-11-16 11:20:18,039 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 210 transitions. [2022-11-16 11:20:18,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 210 transitions. [2022-11-16 11:20:18,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:20:18,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 210 transitions. [2022-11-16 11:20:18,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 105.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:18,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:18,043 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:18,043 INFO L175 Difference]: Start difference. First operand has 115 places, 121 transitions, 263 flow. Second operand 2 states and 210 transitions. [2022-11-16 11:20:18,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 96 transitions, 231 flow [2022-11-16 11:20:18,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 96 transitions, 225 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-11-16 11:20:18,052 INFO L231 Difference]: Finished difference. Result has 95 places, 96 transitions, 207 flow [2022-11-16 11:20:18,052 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=207, PETRI_PLACES=95, PETRI_TRANSITIONS=96} [2022-11-16 11:20:18,053 INFO L288 CegarLoopForPetriNet]: 115 programPoint places, -20 predicate places. [2022-11-16 11:20:18,053 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 96 transitions, 207 flow [2022-11-16 11:20:18,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 93.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:18,054 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:20:18,054 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:20:18,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:20:18,055 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2022-11-16 11:20:18,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:20:18,055 INFO L85 PathProgramCache]: Analyzing trace with hash 500315867, now seen corresponding path program 1 times [2022-11-16 11:20:18,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:20:18,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656848277] [2022-11-16 11:20:18,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:20:18,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:20:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:20:18,076 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:20:18,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:20:18,092 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:20:18,092 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:20:18,093 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-16 11:20:18,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-11-16 11:20:18,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-11-16 11:20:18,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-11-16 11:20:18,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-11-16 11:20:18,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-11-16 11:20:18,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-11-16 11:20:18,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-11-16 11:20:18,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-11-16 11:20:18,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-11-16 11:20:18,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-11-16 11:20:18,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2022-11-16 11:20:18,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-11-16 11:20:18,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-11-16 11:20:18,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-11-16 11:20:18,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-11-16 11:20:18,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-11-16 11:20:18,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:20:18,097 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-16 11:20:18,098 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:20:18,098 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-16 11:20:18,125 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:20:18,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 152 transitions, 336 flow [2022-11-16 11:20:18,154 INFO L130 PetriNetUnfolder]: 21/202 cut-off events. [2022-11-16 11:20:18,155 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-16 11:20:18,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 202 events. 21/202 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 538 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 166. Up to 10 conditions per place. [2022-11-16 11:20:18,157 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 152 transitions, 336 flow [2022-11-16 11:20:18,160 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 152 transitions, 336 flow [2022-11-16 11:20:18,161 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:20:18,162 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;@768176d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:20:18,162 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-16 11:20:18,168 INFO L130 PetriNetUnfolder]: 3/58 cut-off events. [2022-11-16 11:20:18,168 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:20:18,168 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:20:18,168 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:20:18,168 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-11-16 11:20:18,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:20:18,169 INFO L85 PathProgramCache]: Analyzing trace with hash 23165662, now seen corresponding path program 1 times [2022-11-16 11:20:18,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:20:18,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824077887] [2022-11-16 11:20:18,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:20:18,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:20:18,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:18,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:20:18,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:20:18,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824077887] [2022-11-16 11:20:18,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824077887] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:20:18,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:20:18,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:20:18,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555830806] [2022-11-16 11:20:18,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:20:18,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:20:18,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:20:18,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:20:18,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:20:18,197 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 152 [2022-11-16 11:20:18,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 152 transitions, 336 flow. Second operand has 2 states, 2 states have (on average 115.0) internal successors, (230), 2 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:18,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:20:18,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 152 [2022-11-16 11:20:18,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:20:18,495 INFO L130 PetriNetUnfolder]: 324/1489 cut-off events. [2022-11-16 11:20:18,495 INFO L131 PetriNetUnfolder]: For 496/496 co-relation queries the response was YES. [2022-11-16 11:20:18,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2109 conditions, 1489 events. 324/1489 cut-off events. For 496/496 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 10813 event pairs, 204 based on Foata normal form. 263/1579 useless extension candidates. Maximal degree in co-relation 637. Up to 325 conditions per place. [2022-11-16 11:20:18,517 INFO L137 encePairwiseOnDemand]: 130/152 looper letters, 12 selfloop transitions, 0 changer transitions 0/121 dead transitions. [2022-11-16 11:20:18,518 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 121 transitions, 298 flow [2022-11-16 11:20:18,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:20:18,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:20:18,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 262 transitions. [2022-11-16 11:20:18,520 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8618421052631579 [2022-11-16 11:20:18,520 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 262 transitions. [2022-11-16 11:20:18,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 262 transitions. [2022-11-16 11:20:18,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:20:18,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 262 transitions. [2022-11-16 11:20:18,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 131.0) internal successors, (262), 2 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:18,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:18,523 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:18,523 INFO L175 Difference]: Start difference. First operand has 144 places, 152 transitions, 336 flow. Second operand 2 states and 262 transitions. [2022-11-16 11:20:18,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 121 transitions, 298 flow [2022-11-16 11:20:18,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 121 transitions, 286 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-11-16 11:20:18,528 INFO L231 Difference]: Finished difference. Result has 119 places, 121 transitions, 262 flow [2022-11-16 11:20:18,529 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=262, PETRI_PLACES=119, PETRI_TRANSITIONS=121} [2022-11-16 11:20:18,529 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, -25 predicate places. [2022-11-16 11:20:18,530 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 121 transitions, 262 flow [2022-11-16 11:20:18,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 115.0) internal successors, (230), 2 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:18,530 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:20:18,530 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:20:18,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:20:18,531 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-11-16 11:20:18,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:20:18,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1691042515, now seen corresponding path program 1 times [2022-11-16 11:20:18,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:20:18,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379146617] [2022-11-16 11:20:18,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:20:18,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:20:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:20:18,551 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:20:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:20:18,569 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:20:18,569 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:20:18,569 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-16 11:20:18,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2022-11-16 11:20:18,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2022-11-16 11:20:18,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2022-11-16 11:20:18,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2022-11-16 11:20:18,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2022-11-16 11:20:18,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2022-11-16 11:20:18,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2022-11-16 11:20:18,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2022-11-16 11:20:18,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2022-11-16 11:20:18,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2022-11-16 11:20:18,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2022-11-16 11:20:18,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2022-11-16 11:20:18,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2022-11-16 11:20:18,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2022-11-16 11:20:18,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2022-11-16 11:20:18,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2022-11-16 11:20:18,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2022-11-16 11:20:18,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2022-11-16 11:20:18,573 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2022-11-16 11:20:18,573 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2022-11-16 11:20:18,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:20:18,573 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-16 11:20:18,574 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:20:18,574 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-16 11:20:18,607 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:20:18,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 183 transitions, 411 flow [2022-11-16 11:20:18,669 INFO L130 PetriNetUnfolder]: 26/246 cut-off events. [2022-11-16 11:20:18,669 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-16 11:20:18,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 246 events. 26/246 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 702 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 215. Up to 12 conditions per place. [2022-11-16 11:20:18,673 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 183 transitions, 411 flow [2022-11-16 11:20:18,677 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 183 transitions, 411 flow [2022-11-16 11:20:18,678 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:20:18,679 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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;@768176d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:20:18,679 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-16 11:20:18,686 INFO L130 PetriNetUnfolder]: 3/58 cut-off events. [2022-11-16 11:20:18,686 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:20:18,686 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:20:18,687 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:20:18,687 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-11-16 11:20:18,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:20:18,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1181980098, now seen corresponding path program 1 times [2022-11-16 11:20:18,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:20:18,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493657442] [2022-11-16 11:20:18,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:20:18,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:20:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:18,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:20:18,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:20:18,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493657442] [2022-11-16 11:20:18,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493657442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:20:18,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:20:18,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:20:18,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846770585] [2022-11-16 11:20:18,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:20:18,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:20:18,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:20:18,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:20:18,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:20:18,717 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 183 [2022-11-16 11:20:18,718 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 183 transitions, 411 flow. Second operand has 2 states, 2 states have (on average 137.0) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:18,718 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:20:18,718 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 183 [2022-11-16 11:20:18,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:20:19,836 INFO L130 PetriNetUnfolder]: 1215/4702 cut-off events. [2022-11-16 11:20:19,836 INFO L131 PetriNetUnfolder]: For 2359/2359 co-relation queries the response was YES. [2022-11-16 11:20:19,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6997 conditions, 4702 events. 1215/4702 cut-off events. For 2359/2359 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 43541 event pairs, 852 based on Foata normal form. 911/5089 useless extension candidates. Maximal degree in co-relation 2158. Up to 1216 conditions per place. [2022-11-16 11:20:19,916 INFO L137 encePairwiseOnDemand]: 156/183 looper letters, 15 selfloop transitions, 0 changer transitions 0/146 dead transitions. [2022-11-16 11:20:19,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 146 transitions, 367 flow [2022-11-16 11:20:19,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:20:19,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:20:19,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 314 transitions. [2022-11-16 11:20:19,920 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8579234972677595 [2022-11-16 11:20:19,920 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 314 transitions. [2022-11-16 11:20:19,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 314 transitions. [2022-11-16 11:20:19,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:20:19,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 314 transitions. [2022-11-16 11:20:19,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 157.0) internal successors, (314), 2 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:19,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:19,925 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:19,925 INFO L175 Difference]: Start difference. First operand has 173 places, 183 transitions, 411 flow. Second operand 2 states and 314 transitions. [2022-11-16 11:20:19,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 146 transitions, 367 flow [2022-11-16 11:20:19,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 146 transitions, 347 flow, removed 10 selfloop flow, removed 0 redundant places. [2022-11-16 11:20:19,934 INFO L231 Difference]: Finished difference. Result has 143 places, 146 transitions, 317 flow [2022-11-16 11:20:19,936 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=317, PETRI_PLACES=143, PETRI_TRANSITIONS=146} [2022-11-16 11:20:19,938 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, -30 predicate places. [2022-11-16 11:20:19,938 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 146 transitions, 317 flow [2022-11-16 11:20:19,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 137.0) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:19,938 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:20:19,939 INFO L209 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:20:19,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:20:19,940 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-11-16 11:20:19,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:20:19,940 INFO L85 PathProgramCache]: Analyzing trace with hash 149273690, now seen corresponding path program 1 times [2022-11-16 11:20:19,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:20:19,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362628358] [2022-11-16 11:20:19,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:20:19,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:20:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:20:19,981 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:20:20,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:20:20,021 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:20:20,024 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:20:20,024 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-11-16 11:20:20,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2022-11-16 11:20:20,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2022-11-16 11:20:20,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2022-11-16 11:20:20,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2022-11-16 11:20:20,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2022-11-16 11:20:20,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2022-11-16 11:20:20,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2022-11-16 11:20:20,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2022-11-16 11:20:20,027 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2022-11-16 11:20:20,027 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2022-11-16 11:20:20,027 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2022-11-16 11:20:20,027 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2022-11-16 11:20:20,027 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2022-11-16 11:20:20,028 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2022-11-16 11:20:20,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2022-11-16 11:20:20,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2022-11-16 11:20:20,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2022-11-16 11:20:20,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2022-11-16 11:20:20,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2022-11-16 11:20:20,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2022-11-16 11:20:20,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2022-11-16 11:20:20,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2022-11-16 11:20:20,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2022-11-16 11:20:20,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2022-11-16 11:20:20,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:20:20,034 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-16 11:20:20,034 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:20:20,034 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2022-11-16 11:20:20,085 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:20:20,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 214 transitions, 488 flow [2022-11-16 11:20:20,137 INFO L130 PetriNetUnfolder]: 31/290 cut-off events. [2022-11-16 11:20:20,137 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-11-16 11:20:20,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 290 events. 31/290 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 843 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 265. Up to 14 conditions per place. [2022-11-16 11:20:20,142 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 214 transitions, 488 flow [2022-11-16 11:20:20,146 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 214 transitions, 488 flow [2022-11-16 11:20:20,150 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:20:20,151 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;@768176d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:20:20,151 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-11-16 11:20:20,156 INFO L130 PetriNetUnfolder]: 3/58 cut-off events. [2022-11-16 11:20:20,156 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:20:20,156 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:20:20,156 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:20:20,156 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-16 11:20:20,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:20:20,157 INFO L85 PathProgramCache]: Analyzing trace with hash -174106588, now seen corresponding path program 1 times [2022-11-16 11:20:20,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:20:20,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244279275] [2022-11-16 11:20:20,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:20:20,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:20:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:20,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:20:20,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:20:20,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244279275] [2022-11-16 11:20:20,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244279275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:20:20,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:20:20,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:20:20,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632734694] [2022-11-16 11:20:20,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:20:20,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:20:20,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:20:20,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:20:20,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:20:20,246 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 214 [2022-11-16 11:20:20,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 214 transitions, 488 flow. Second operand has 2 states, 2 states have (on average 159.0) internal successors, (318), 2 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:20,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:20:20,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 214 [2022-11-16 11:20:20,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:20:23,962 INFO L130 PetriNetUnfolder]: 4374/14827 cut-off events. [2022-11-16 11:20:23,962 INFO L131 PetriNetUnfolder]: For 10297/10297 co-relation queries the response was YES. [2022-11-16 11:20:24,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23036 conditions, 14827 events. 4374/14827 cut-off events. For 10297/10297 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 163944 event pairs, 3282 based on Foata normal form. 3098/16348 useless extension candidates. Maximal degree in co-relation 7180. Up to 4375 conditions per place. [2022-11-16 11:20:24,333 INFO L137 encePairwiseOnDemand]: 182/214 looper letters, 18 selfloop transitions, 0 changer transitions 0/171 dead transitions. [2022-11-16 11:20:24,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 171 transitions, 438 flow [2022-11-16 11:20:24,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:20:24,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:20:24,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 366 transitions. [2022-11-16 11:20:24,335 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8551401869158879 [2022-11-16 11:20:24,335 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 366 transitions. [2022-11-16 11:20:24,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 366 transitions. [2022-11-16 11:20:24,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:20:24,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 366 transitions. [2022-11-16 11:20:24,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 183.0) internal successors, (366), 2 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:24,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:24,340 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:24,340 INFO L175 Difference]: Start difference. First operand has 202 places, 214 transitions, 488 flow. Second operand 2 states and 366 transitions. [2022-11-16 11:20:24,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 171 transitions, 438 flow [2022-11-16 11:20:24,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 171 transitions, 408 flow, removed 15 selfloop flow, removed 0 redundant places. [2022-11-16 11:20:24,355 INFO L231 Difference]: Finished difference. Result has 167 places, 171 transitions, 372 flow [2022-11-16 11:20:24,356 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=372, PETRI_PLACES=167, PETRI_TRANSITIONS=171} [2022-11-16 11:20:24,359 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, -35 predicate places. [2022-11-16 11:20:24,359 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 171 transitions, 372 flow [2022-11-16 11:20:24,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 159.0) internal successors, (318), 2 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:24,360 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:20:24,360 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:20:24,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:20:24,362 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-16 11:20:24,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:20:24,363 INFO L85 PathProgramCache]: Analyzing trace with hash -365789963, now seen corresponding path program 1 times [2022-11-16 11:20:24,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:20:24,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932968129] [2022-11-16 11:20:24,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:20:24,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:20:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:20:24,407 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:20:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:20:24,441 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:20:24,447 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:20:24,447 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2022-11-16 11:20:24,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 29 remaining) [2022-11-16 11:20:24,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 29 remaining) [2022-11-16 11:20:24,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 29 remaining) [2022-11-16 11:20:24,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 29 remaining) [2022-11-16 11:20:24,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 29 remaining) [2022-11-16 11:20:24,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 29 remaining) [2022-11-16 11:20:24,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 29 remaining) [2022-11-16 11:20:24,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 29 remaining) [2022-11-16 11:20:24,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 29 remaining) [2022-11-16 11:20:24,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 29 remaining) [2022-11-16 11:20:24,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 29 remaining) [2022-11-16 11:20:24,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 29 remaining) [2022-11-16 11:20:24,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 29 remaining) [2022-11-16 11:20:24,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 29 remaining) [2022-11-16 11:20:24,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 29 remaining) [2022-11-16 11:20:24,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 29 remaining) [2022-11-16 11:20:24,451 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 29 remaining) [2022-11-16 11:20:24,451 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 29 remaining) [2022-11-16 11:20:24,451 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 29 remaining) [2022-11-16 11:20:24,451 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 29 remaining) [2022-11-16 11:20:24,451 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 29 remaining) [2022-11-16 11:20:24,452 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 29 remaining) [2022-11-16 11:20:24,452 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 29 remaining) [2022-11-16 11:20:24,453 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 29 remaining) [2022-11-16 11:20:24,453 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 29 remaining) [2022-11-16 11:20:24,453 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 29 remaining) [2022-11-16 11:20:24,453 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 29 remaining) [2022-11-16 11:20:24,454 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 29 remaining) [2022-11-16 11:20:24,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:20:24,454 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-16 11:20:24,457 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:20:24,457 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2022-11-16 11:20:24,518 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:20:24,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 231 places, 245 transitions, 567 flow [2022-11-16 11:20:24,588 INFO L130 PetriNetUnfolder]: 36/334 cut-off events. [2022-11-16 11:20:24,588 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2022-11-16 11:20:24,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 334 events. 36/334 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1021 event pairs, 0 based on Foata normal form. 0/262 useless extension candidates. Maximal degree in co-relation 318. Up to 16 conditions per place. [2022-11-16 11:20:24,596 INFO L82 GeneralOperation]: Start removeDead. Operand has 231 places, 245 transitions, 567 flow [2022-11-16 11:20:24,602 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 231 places, 245 transitions, 567 flow [2022-11-16 11:20:24,603 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:20:24,603 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;@768176d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:20:24,603 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2022-11-16 11:20:24,610 INFO L130 PetriNetUnfolder]: 3/61 cut-off events. [2022-11-16 11:20:24,610 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:20:24,610 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:20:24,610 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:20:24,610 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-11-16 11:20:24,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:20:24,611 INFO L85 PathProgramCache]: Analyzing trace with hash 508038336, now seen corresponding path program 1 times [2022-11-16 11:20:24,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:20:24,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215670569] [2022-11-16 11:20:24,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:20:24,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:20:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:24,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:20:24,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:20:24,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215670569] [2022-11-16 11:20:24,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215670569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:20:24,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:20:24,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:20:24,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590775064] [2022-11-16 11:20:24,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:20:24,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:20:24,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:20:24,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:20:24,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:20:24,736 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 245 [2022-11-16 11:20:24,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 245 transitions, 567 flow. Second operand has 2 states, 2 states have (on average 181.0) internal successors, (362), 2 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:24,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:20:24,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 245 [2022-11-16 11:20:24,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:20:34,937 INFO L130 PetriNetUnfolder]: 15309/46660 cut-off events. [2022-11-16 11:20:34,938 INFO L131 PetriNetUnfolder]: For 42373/42373 co-relation queries the response was YES. [2022-11-16 11:20:35,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75282 conditions, 46660 events. 15309/46660 cut-off events. For 42373/42373 co-relation queries the response was YES. Maximal size of possible extension queue 1337. Compared 590146 event pairs, 12030 based on Foata normal form. 10388/52312 useless extension candidates. Maximal degree in co-relation 23623. Up to 15310 conditions per place. [2022-11-16 11:20:36,014 INFO L137 encePairwiseOnDemand]: 208/245 looper letters, 21 selfloop transitions, 0 changer transitions 0/196 dead transitions. [2022-11-16 11:20:36,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 196 transitions, 511 flow [2022-11-16 11:20:36,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:20:36,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:20:36,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 418 transitions. [2022-11-16 11:20:36,016 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8530612244897959 [2022-11-16 11:20:36,017 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 418 transitions. [2022-11-16 11:20:36,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 418 transitions. [2022-11-16 11:20:36,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:20:36,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 418 transitions. [2022-11-16 11:20:36,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 209.0) internal successors, (418), 2 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) [2022-11-16 11:20:36,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:36,022 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:36,023 INFO L175 Difference]: Start difference. First operand has 231 places, 245 transitions, 567 flow. Second operand 2 states and 418 transitions. [2022-11-16 11:20:36,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 196 transitions, 511 flow [2022-11-16 11:20:36,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 196 transitions, 469 flow, removed 21 selfloop flow, removed 0 redundant places. [2022-11-16 11:20:36,109 INFO L231 Difference]: Finished difference. Result has 191 places, 196 transitions, 427 flow [2022-11-16 11:20:36,109 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=427, PETRI_PLACES=191, PETRI_TRANSITIONS=196} [2022-11-16 11:20:36,111 INFO L288 CegarLoopForPetriNet]: 231 programPoint places, -40 predicate places. [2022-11-16 11:20:36,111 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 196 transitions, 427 flow [2022-11-16 11:20:36,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 181.0) internal successors, (362), 2 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:36,112 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:20:36,112 INFO L209 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:20:36,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:20:36,112 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-11-16 11:20:36,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:20:36,113 INFO L85 PathProgramCache]: Analyzing trace with hash 130646041, now seen corresponding path program 1 times [2022-11-16 11:20:36,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:20:36,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031052699] [2022-11-16 11:20:36,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:20:36,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:20:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:20:36,146 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:20:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:20:36,186 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:20:36,186 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:20:36,186 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2022-11-16 11:20:36,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 33 remaining) [2022-11-16 11:20:36,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 33 remaining) [2022-11-16 11:20:36,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (29 of 33 remaining) [2022-11-16 11:20:36,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (28 of 33 remaining) [2022-11-16 11:20:36,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 33 remaining) [2022-11-16 11:20:36,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 33 remaining) [2022-11-16 11:20:36,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 33 remaining) [2022-11-16 11:20:36,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 33 remaining) [2022-11-16 11:20:36,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 33 remaining) [2022-11-16 11:20:36,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 33 remaining) [2022-11-16 11:20:36,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 33 remaining) [2022-11-16 11:20:36,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 33 remaining) [2022-11-16 11:20:36,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 33 remaining) [2022-11-16 11:20:36,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 33 remaining) [2022-11-16 11:20:36,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 33 remaining) [2022-11-16 11:20:36,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 33 remaining) [2022-11-16 11:20:36,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 33 remaining) [2022-11-16 11:20:36,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 33 remaining) [2022-11-16 11:20:36,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 33 remaining) [2022-11-16 11:20:36,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 33 remaining) [2022-11-16 11:20:36,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 33 remaining) [2022-11-16 11:20:36,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 33 remaining) [2022-11-16 11:20:36,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 33 remaining) [2022-11-16 11:20:36,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 33 remaining) [2022-11-16 11:20:36,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 33 remaining) [2022-11-16 11:20:36,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 33 remaining) [2022-11-16 11:20:36,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 33 remaining) [2022-11-16 11:20:36,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 33 remaining) [2022-11-16 11:20:36,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 33 remaining) [2022-11-16 11:20:36,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 33 remaining) [2022-11-16 11:20:36,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 33 remaining) [2022-11-16 11:20:36,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 33 remaining) [2022-11-16 11:20:36,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:20:36,195 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-16 11:20:36,195 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:20:36,196 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2022-11-16 11:20:36,254 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:20:36,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 276 transitions, 648 flow [2022-11-16 11:20:36,346 INFO L130 PetriNetUnfolder]: 41/378 cut-off events. [2022-11-16 11:20:36,347 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2022-11-16 11:20:36,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 378 events. 41/378 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1163 event pairs, 0 based on Foata normal form. 0/296 useless extension candidates. Maximal degree in co-relation 372. Up to 18 conditions per place. [2022-11-16 11:20:36,355 INFO L82 GeneralOperation]: Start removeDead. Operand has 260 places, 276 transitions, 648 flow [2022-11-16 11:20:36,361 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 260 places, 276 transitions, 648 flow [2022-11-16 11:20:36,363 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:20:36,363 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;@768176d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:20:36,364 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2022-11-16 11:20:36,369 INFO L130 PetriNetUnfolder]: 3/61 cut-off events. [2022-11-16 11:20:36,369 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:20:36,369 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:20:36,370 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:20:36,370 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-11-16 11:20:36,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:20:36,370 INFO L85 PathProgramCache]: Analyzing trace with hash -2099214170, now seen corresponding path program 1 times [2022-11-16 11:20:36,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:20:36,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648500060] [2022-11-16 11:20:36,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:20:36,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:20:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:36,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:20:36,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:20:36,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648500060] [2022-11-16 11:20:36,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648500060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:20:36,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:20:36,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:20:36,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234796028] [2022-11-16 11:20:36,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:20:36,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:20:36,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:20:36,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:20:36,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:20:36,410 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 276 [2022-11-16 11:20:36,411 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 276 transitions, 648 flow. Second operand has 2 states, 2 states have (on average 203.0) internal successors, (406), 2 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:36,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:20:36,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 276 [2022-11-16 11:20:36,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand