./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd63e6-d9a7-42fa-97f3-07150598445b/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd63e6-d9a7-42fa-97f3-07150598445b/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd63e6-d9a7-42fa-97f3-07150598445b/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd63e6-d9a7-42fa-97f3-07150598445b/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd63e6-d9a7-42fa-97f3-07150598445b/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd63e6-d9a7-42fa-97f3-07150598445b/bin/uautomizer-ug76WZFUDN --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 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d --- 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-6b4ec56 [2022-11-20 12:00:53,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:00:53,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:00:53,865 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:00:53,866 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:00:53,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:00:53,868 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:00:53,871 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:00:53,873 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:00:53,874 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:00:53,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:00:53,876 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:00:53,877 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:00:53,878 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:00:53,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:00:53,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:00:53,883 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:00:53,884 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:00:53,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:00:53,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:00:53,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:00:53,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:00:53,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:00:53,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:00:53,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:00:53,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:00:53,900 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:00:53,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:00:53,902 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:00:53,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:00:53,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:00:53,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:00:53,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:00:53,907 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:00:53,908 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:00:53,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:00:53,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:00:53,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:00:53,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:00:53,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:00:53,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:00:53,913 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd63e6-d9a7-42fa-97f3-07150598445b/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-20 12:00:53,959 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:00:53,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:00:53,961 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:00:53,961 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:00:53,962 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:00:53,963 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:00:53,964 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:00:53,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:00:53,964 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:00:53,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:00:53,966 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:00:53,966 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:00:53,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:00:53,967 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:00:53,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:00:53,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:00:53,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:00:53,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:00:53,968 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-20 12:00:53,968 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:00:53,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:00:53,969 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:00:53,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:00:53,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:00:53,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:00:53,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:00:53,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:00:53,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:00:53,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:00:53,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:00:53,972 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:00:53,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:00:53,972 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:00:53,973 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:00:53,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:00:53,973 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_97fd63e6-d9a7-42fa-97f3-07150598445b/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd63e6-d9a7-42fa-97f3-07150598445b/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d [2022-11-20 12:00:54,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:00:54,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:00:54,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:00:54,332 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:00:54,333 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:00:54,334 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd63e6-d9a7-42fa-97f3-07150598445b/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i [2022-11-20 12:00:57,606 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:00:57,917 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:00:57,918 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd63e6-d9a7-42fa-97f3-07150598445b/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i [2022-11-20 12:00:57,943 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd63e6-d9a7-42fa-97f3-07150598445b/bin/uautomizer-ug76WZFUDN/data/6f2b9d8a3/db7945d02c41491d92eae0a5954cdd93/FLAGbdbe4499a [2022-11-20 12:00:57,965 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd63e6-d9a7-42fa-97f3-07150598445b/bin/uautomizer-ug76WZFUDN/data/6f2b9d8a3/db7945d02c41491d92eae0a5954cdd93 [2022-11-20 12:00:57,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:00:57,969 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:00:57,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:00:57,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:00:57,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:00:57,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:00:57" (1/1) ... [2022-11-20 12:00:57,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13b3fab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:57, skipping insertion in model container [2022-11-20 12:00:57,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:00:57" (1/1) ... [2022-11-20 12:00:57,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:00:58,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:00:58,607 WARN L237 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_97fd63e6-d9a7-42fa-97f3-07150598445b/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i[41323,41336] [2022-11-20 12:00:58,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:00:58,690 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:00:58,760 WARN L237 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_97fd63e6-d9a7-42fa-97f3-07150598445b/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i[41323,41336] [2022-11-20 12:00:58,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:00:58,877 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:00:58,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:58 WrapperNode [2022-11-20 12:00:58,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:00:58,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:00:58,880 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:00:58,880 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:00:58,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:58" (1/1) ... [2022-11-20 12:00:58,923 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:58" (1/1) ... [2022-11-20 12:00:58,988 INFO L138 Inliner]: procedures = 273, calls = 43, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 185 [2022-11-20 12:00:58,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:00:58,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:00:58,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:00:58,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:00:59,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:58" (1/1) ... [2022-11-20 12:00:59,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:58" (1/1) ... [2022-11-20 12:00:59,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:58" (1/1) ... [2022-11-20 12:00:59,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:58" (1/1) ... [2022-11-20 12:00:59,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:58" (1/1) ... [2022-11-20 12:00:59,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:58" (1/1) ... [2022-11-20 12:00:59,058 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:58" (1/1) ... [2022-11-20 12:00:59,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:58" (1/1) ... [2022-11-20 12:00:59,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:00:59,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:00:59,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:00:59,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:00:59,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:58" (1/1) ... [2022-11-20 12:00:59,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:00:59,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd63e6-d9a7-42fa-97f3-07150598445b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:00:59,112 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd63e6-d9a7-42fa-97f3-07150598445b/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:00:59,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd63e6-d9a7-42fa-97f3-07150598445b/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:00:59,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:00:59,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:00:59,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:00:59,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:00:59,172 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 12:00:59,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:00:59,172 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-20 12:00:59,172 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-20 12:00:59,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:00:59,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:00:59,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:00:59,175 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:00:59,386 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:00:59,388 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:00:59,750 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:00:59,761 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:00:59,762 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-20 12:00:59,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:00:59 BoogieIcfgContainer [2022-11-20 12:00:59,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:00:59,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:00:59,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:00:59,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:00:59,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:00:57" (1/3) ... [2022-11-20 12:00:59,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd220d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:00:59, skipping insertion in model container [2022-11-20 12:00:59,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:58" (2/3) ... [2022-11-20 12:00:59,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd220d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:00:59, skipping insertion in model container [2022-11-20 12:00:59,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:00:59" (3/3) ... [2022-11-20 12:00:59,777 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_27-funptr_racing.i [2022-11-20 12:00:59,789 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:00:59,802 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:00:59,803 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-20 12:00:59,803 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:00:59,948 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-20 12:00:59,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 203 transitions, 414 flow [2022-11-20 12:01:00,111 INFO L130 PetriNetUnfolder]: 24/256 cut-off events. [2022-11-20 12:01:00,111 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 12:01:00,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 256 events. 24/256 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 871 event pairs, 0 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 159. Up to 4 conditions per place. [2022-11-20 12:01:00,128 INFO L82 GeneralOperation]: Start removeDead. Operand has 187 places, 203 transitions, 414 flow [2022-11-20 12:01:00,145 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 187 places, 203 transitions, 414 flow [2022-11-20 12:01:00,163 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:01:00,176 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;@5ffdf51c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:01:00,176 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-20 12:01:00,219 INFO L130 PetriNetUnfolder]: 1/53 cut-off events. [2022-11-20 12:01:00,220 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:01:00,220 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:01:00,221 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:00,222 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 12:01:00,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:00,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1760296945, now seen corresponding path program 1 times [2022-11-20 12:01:00,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:00,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271022613] [2022-11-20 12:01:00,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:00,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:00,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:00,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:00,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:00,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271022613] [2022-11-20 12:01:00,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271022613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:01:00,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:01:00,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:01:00,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554008325] [2022-11-20 12:01:00,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:01:00,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 12:01:00,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:00,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 12:01:00,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:01:00,694 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 203 [2022-11-20 12:01:00,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 203 transitions, 414 flow. Second operand has 2 states, 2 states have (on average 183.5) internal successors, (367), 2 states have internal predecessors, (367), 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) [2022-11-20 12:01:00,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:01:00,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 203 [2022-11-20 12:01:00,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:01:00,790 INFO L130 PetriNetUnfolder]: 2/232 cut-off events. [2022-11-20 12:01:00,790 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-20 12:01:00,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 232 events. 2/232 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 563 event pairs, 0 based on Foata normal form. 22/232 useless extension candidates. Maximal degree in co-relation 143. Up to 3 conditions per place. [2022-11-20 12:01:00,794 INFO L137 encePairwiseOnDemand]: 186/203 looper letters, 2 selfloop transitions, 0 changer transitions 0/185 dead transitions. [2022-11-20 12:01:00,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 185 transitions, 382 flow [2022-11-20 12:01:00,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 12:01:00,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 12:01:00,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 385 transitions. [2022-11-20 12:01:00,812 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9482758620689655 [2022-11-20 12:01:00,813 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 385 transitions. [2022-11-20 12:01:00,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 385 transitions. [2022-11-20 12:01:00,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:01:00,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 385 transitions. [2022-11-20 12:01:00,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 192.5) internal successors, (385), 2 states have internal predecessors, (385), 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) [2022-11-20 12:01:00,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 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) [2022-11-20 12:01:00,837 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 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) [2022-11-20 12:01:00,839 INFO L175 Difference]: Start difference. First operand has 187 places, 203 transitions, 414 flow. Second operand 2 states and 385 transitions. [2022-11-20 12:01:00,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 185 transitions, 382 flow [2022-11-20 12:01:00,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 185 transitions, 382 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:01:00,850 INFO L231 Difference]: Finished difference. Result has 187 places, 185 transitions, 378 flow [2022-11-20 12:01:00,853 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=378, PETRI_PLACES=187, PETRI_TRANSITIONS=185} [2022-11-20 12:01:00,865 INFO L288 CegarLoopForPetriNet]: 187 programPoint places, 0 predicate places. [2022-11-20 12:01:00,865 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 185 transitions, 378 flow [2022-11-20 12:01:00,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 183.5) internal successors, (367), 2 states have internal predecessors, (367), 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) [2022-11-20 12:01:00,866 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:01:00,866 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:00,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:01:00,867 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 12:01:00,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:00,867 INFO L85 PathProgramCache]: Analyzing trace with hash -872793264, now seen corresponding path program 1 times [2022-11-20 12:01:00,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:00,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859334225] [2022-11-20 12:01:00,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:00,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:01,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:01,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:01,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859334225] [2022-11-20 12:01:01,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859334225] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:01:01,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:01:01,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:01:01,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166599845] [2022-11-20 12:01:01,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:01:01,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:01:01,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:01,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:01:01,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:01:01,091 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 203 [2022-11-20 12:01:01,092 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 185 transitions, 378 flow. Second operand has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 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) [2022-11-20 12:01:01,092 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:01:01,092 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 203 [2022-11-20 12:01:01,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:01:01,165 INFO L130 PetriNetUnfolder]: 1/204 cut-off events. [2022-11-20 12:01:01,165 INFO L131 PetriNetUnfolder]: For 9/20 co-relation queries the response was YES. [2022-11-20 12:01:01,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 204 events. 1/204 cut-off events. For 9/20 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 338 event pairs, 0 based on Foata normal form. 1/187 useless extension candidates. Maximal degree in co-relation 219. Up to 7 conditions per place. [2022-11-20 12:01:01,167 INFO L137 encePairwiseOnDemand]: 200/203 looper letters, 9 selfloop transitions, 2 changer transitions 0/187 dead transitions. [2022-11-20 12:01:01,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 187 transitions, 404 flow [2022-11-20 12:01:01,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:01:01,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:01:01,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 540 transitions. [2022-11-20 12:01:01,171 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8866995073891626 [2022-11-20 12:01:01,171 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 540 transitions. [2022-11-20 12:01:01,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 540 transitions. [2022-11-20 12:01:01,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:01:01,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 540 transitions. [2022-11-20 12:01:01,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 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) [2022-11-20 12:01:01,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 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) [2022-11-20 12:01:01,177 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 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) [2022-11-20 12:01:01,177 INFO L175 Difference]: Start difference. First operand has 187 places, 185 transitions, 378 flow. Second operand 3 states and 540 transitions. [2022-11-20 12:01:01,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 187 transitions, 404 flow [2022-11-20 12:01:01,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 187 transitions, 404 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:01:01,183 INFO L231 Difference]: Finished difference. Result has 190 places, 185 transitions, 386 flow [2022-11-20 12:01:01,183 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=386, PETRI_PLACES=190, PETRI_TRANSITIONS=185} [2022-11-20 12:01:01,184 INFO L288 CegarLoopForPetriNet]: 187 programPoint places, 3 predicate places. [2022-11-20 12:01:01,184 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 185 transitions, 386 flow [2022-11-20 12:01:01,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 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) [2022-11-20 12:01:01,185 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:01:01,185 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:01,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:01:01,186 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 12:01:01,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:01,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1251294663, now seen corresponding path program 1 times [2022-11-20 12:01:01,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:01,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655276788] [2022-11-20 12:01:01,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:01,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:01,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:01,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:01,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655276788] [2022-11-20 12:01:01,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655276788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:01:01,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:01:01,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:01:01,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603429527] [2022-11-20 12:01:01,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:01:01,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:01:01,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:01,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:01:01,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:01:01,319 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 203 [2022-11-20 12:01:01,320 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 185 transitions, 386 flow. Second operand has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 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) [2022-11-20 12:01:01,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:01:01,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 203 [2022-11-20 12:01:01,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:01:01,447 INFO L130 PetriNetUnfolder]: 13/563 cut-off events. [2022-11-20 12:01:01,447 INFO L131 PetriNetUnfolder]: For 12/19 co-relation queries the response was YES. [2022-11-20 12:01:01,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 610 conditions, 563 events. 13/563 cut-off events. For 12/19 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2839 event pairs, 2 based on Foata normal form. 1/502 useless extension candidates. Maximal degree in co-relation 604. Up to 17 conditions per place. [2022-11-20 12:01:01,452 INFO L137 encePairwiseOnDemand]: 199/203 looper letters, 10 selfloop transitions, 3 changer transitions 0/190 dead transitions. [2022-11-20 12:01:01,452 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 190 transitions, 425 flow [2022-11-20 12:01:01,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:01:01,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:01:01,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 545 transitions. [2022-11-20 12:01:01,454 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8949096880131363 [2022-11-20 12:01:01,455 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 545 transitions. [2022-11-20 12:01:01,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 545 transitions. [2022-11-20 12:01:01,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:01:01,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 545 transitions. [2022-11-20 12:01:01,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 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) [2022-11-20 12:01:01,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 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) [2022-11-20 12:01:01,460 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 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) [2022-11-20 12:01:01,460 INFO L175 Difference]: Start difference. First operand has 190 places, 185 transitions, 386 flow. Second operand 3 states and 545 transitions. [2022-11-20 12:01:01,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 190 transitions, 425 flow [2022-11-20 12:01:01,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 190 transitions, 421 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:01:01,465 INFO L231 Difference]: Finished difference. Result has 192 places, 187 transitions, 404 flow [2022-11-20 12:01:01,465 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=404, PETRI_PLACES=192, PETRI_TRANSITIONS=187} [2022-11-20 12:01:01,466 INFO L288 CegarLoopForPetriNet]: 187 programPoint places, 5 predicate places. [2022-11-20 12:01:01,466 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 187 transitions, 404 flow [2022-11-20 12:01:01,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 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) [2022-11-20 12:01:01,467 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:01:01,467 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, 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] [2022-11-20 12:01:01,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:01:01,468 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 12:01:01,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:01,468 INFO L85 PathProgramCache]: Analyzing trace with hash -39309455, now seen corresponding path program 1 times [2022-11-20 12:01:01,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:01,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359776599] [2022-11-20 12:01:01,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:01,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:01,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:01:01,518 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:01:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:01:01,575 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:01:01,575 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 12:01:01,576 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-11-20 12:01:01,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-11-20 12:01:01,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-11-20 12:01:01,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-11-20 12:01:01,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-11-20 12:01:01,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-11-20 12:01:01,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-11-20 12:01:01,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-11-20 12:01:01,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-11-20 12:01:01,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-11-20 12:01:01,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-11-20 12:01:01,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-11-20 12:01:01,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-11-20 12:01:01,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-11-20 12:01:01,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-11-20 12:01:01,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-11-20 12:01:01,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-11-20 12:01:01,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-11-20 12:01:01,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-11-20 12:01:01,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-11-20 12:01:01,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-11-20 12:01:01,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-11-20 12:01:01,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:01:01,592 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-20 12:01:01,599 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 12:01:01,599 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-20 12:01:01,682 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 12:01:01,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 278 places, 306 transitions, 630 flow [2022-11-20 12:01:01,810 INFO L130 PetriNetUnfolder]: 45/443 cut-off events. [2022-11-20 12:01:01,811 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-20 12:01:01,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 443 events. 45/443 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1917 event pairs, 0 based on Foata normal form. 0/366 useless extension candidates. Maximal degree in co-relation 282. Up to 8 conditions per place. [2022-11-20 12:01:01,819 INFO L82 GeneralOperation]: Start removeDead. Operand has 278 places, 306 transitions, 630 flow [2022-11-20 12:01:01,834 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 278 places, 306 transitions, 630 flow [2022-11-20 12:01:01,846 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:01:01,848 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;@5ffdf51c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:01:01,848 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-20 12:01:01,854 INFO L130 PetriNetUnfolder]: 1/51 cut-off events. [2022-11-20 12:01:01,854 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:01:01,854 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:01:01,855 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:01,855 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-20 12:01:01,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:01,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1927980657, now seen corresponding path program 1 times [2022-11-20 12:01:01,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:01,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263966128] [2022-11-20 12:01:01,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:01,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:01,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:01,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:01,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263966128] [2022-11-20 12:01:01,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263966128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:01:01,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:01:01,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:01:01,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850243733] [2022-11-20 12:01:01,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:01:01,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 12:01:01,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:01,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 12:01:01,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:01:01,929 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 306 [2022-11-20 12:01:01,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 306 transitions, 630 flow. Second operand has 2 states, 2 states have (on average 272.5) internal successors, (545), 2 states have internal predecessors, (545), 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) [2022-11-20 12:01:01,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:01:01,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 306 [2022-11-20 12:01:01,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:01:02,067 INFO L130 PetriNetUnfolder]: 5/400 cut-off events. [2022-11-20 12:01:02,067 INFO L131 PetriNetUnfolder]: For 18/22 co-relation queries the response was YES. [2022-11-20 12:01:02,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 400 events. 5/400 cut-off events. For 18/22 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1481 event pairs, 0 based on Foata normal form. 64/424 useless extension candidates. Maximal degree in co-relation 252. Up to 7 conditions per place. [2022-11-20 12:01:02,074 INFO L137 encePairwiseOnDemand]: 277/306 looper letters, 4 selfloop transitions, 0 changer transitions 0/276 dead transitions. [2022-11-20 12:01:02,075 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 276 transitions, 578 flow [2022-11-20 12:01:02,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 12:01:02,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 12:01:02,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 577 transitions. [2022-11-20 12:01:02,077 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9428104575163399 [2022-11-20 12:01:02,077 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 577 transitions. [2022-11-20 12:01:02,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 577 transitions. [2022-11-20 12:01:02,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:01:02,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 577 transitions. [2022-11-20 12:01:02,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 288.5) internal successors, (577), 2 states have internal predecessors, (577), 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) [2022-11-20 12:01:02,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 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) [2022-11-20 12:01:02,082 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 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) [2022-11-20 12:01:02,083 INFO L175 Difference]: Start difference. First operand has 278 places, 306 transitions, 630 flow. Second operand 2 states and 577 transitions. [2022-11-20 12:01:02,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 276 transitions, 578 flow [2022-11-20 12:01:02,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 276 transitions, 578 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:01:02,089 INFO L231 Difference]: Finished difference. Result has 278 places, 276 transitions, 570 flow [2022-11-20 12:01:02,090 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=570, PETRI_PLACES=278, PETRI_TRANSITIONS=276} [2022-11-20 12:01:02,092 INFO L288 CegarLoopForPetriNet]: 278 programPoint places, 0 predicate places. [2022-11-20 12:01:02,092 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 276 transitions, 570 flow [2022-11-20 12:01:02,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 272.5) internal successors, (545), 2 states have internal predecessors, (545), 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) [2022-11-20 12:01:02,093 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:01:02,093 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:02,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:01:02,094 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-20 12:01:02,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:02,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1040476976, now seen corresponding path program 1 times [2022-11-20 12:01:02,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:02,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280344553] [2022-11-20 12:01:02,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:02,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:02,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:02,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:02,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280344553] [2022-11-20 12:01:02,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280344553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:01:02,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:01:02,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:01:02,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469097510] [2022-11-20 12:01:02,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:01:02,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:01:02,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:02,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:01:02,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:01:02,198 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 306 [2022-11-20 12:01:02,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 276 transitions, 570 flow. Second operand has 3 states, 3 states have (on average 266.0) internal successors, (798), 3 states have internal predecessors, (798), 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) [2022-11-20 12:01:02,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:01:02,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 306 [2022-11-20 12:01:02,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:01:02,343 INFO L130 PetriNetUnfolder]: 4/372 cut-off events. [2022-11-20 12:01:02,344 INFO L131 PetriNetUnfolder]: For 14/33 co-relation queries the response was YES. [2022-11-20 12:01:02,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408 conditions, 372 events. 4/372 cut-off events. For 14/33 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1297 event pairs, 0 based on Foata normal form. 1/337 useless extension candidates. Maximal degree in co-relation 403. Up to 16 conditions per place. [2022-11-20 12:01:02,352 INFO L137 encePairwiseOnDemand]: 303/306 looper letters, 13 selfloop transitions, 2 changer transitions 0/280 dead transitions. [2022-11-20 12:01:02,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 280 transitions, 608 flow [2022-11-20 12:01:02,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:01:02,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:01:02,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 811 transitions. [2022-11-20 12:01:02,355 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.883442265795207 [2022-11-20 12:01:02,355 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 811 transitions. [2022-11-20 12:01:02,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 811 transitions. [2022-11-20 12:01:02,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:01:02,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 811 transitions. [2022-11-20 12:01:02,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.3333333333333) internal successors, (811), 3 states have internal predecessors, (811), 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) [2022-11-20 12:01:02,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 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) [2022-11-20 12:01:02,361 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 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) [2022-11-20 12:01:02,361 INFO L175 Difference]: Start difference. First operand has 278 places, 276 transitions, 570 flow. Second operand 3 states and 811 transitions. [2022-11-20 12:01:02,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 280 transitions, 608 flow [2022-11-20 12:01:02,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 280 transitions, 608 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:01:02,367 INFO L231 Difference]: Finished difference. Result has 281 places, 277 transitions, 582 flow [2022-11-20 12:01:02,368 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=582, PETRI_PLACES=281, PETRI_TRANSITIONS=277} [2022-11-20 12:01:02,369 INFO L288 CegarLoopForPetriNet]: 278 programPoint places, 3 predicate places. [2022-11-20 12:01:02,369 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 277 transitions, 582 flow [2022-11-20 12:01:02,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 266.0) internal successors, (798), 3 states have internal predecessors, (798), 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) [2022-11-20 12:01:02,370 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:01:02,370 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:02,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:01:02,371 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-20 12:01:02,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:02,371 INFO L85 PathProgramCache]: Analyzing trace with hash 615707756, now seen corresponding path program 1 times [2022-11-20 12:01:02,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:02,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850659233] [2022-11-20 12:01:02,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:02,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:02,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:02,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:02,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:02,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850659233] [2022-11-20 12:01:02,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850659233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:01:02,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:01:02,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:01:02,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555561806] [2022-11-20 12:01:02,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:01:02,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:01:02,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:02,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:01:02,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:01:02,463 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 306 [2022-11-20 12:01:02,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 277 transitions, 582 flow. Second operand has 3 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 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) [2022-11-20 12:01:02,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:01:02,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 306 [2022-11-20 12:01:02,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:01:03,299 INFO L130 PetriNetUnfolder]: 148/3264 cut-off events. [2022-11-20 12:01:03,299 INFO L131 PetriNetUnfolder]: For 75/119 co-relation queries the response was YES. [2022-11-20 12:01:03,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3560 conditions, 3264 events. 148/3264 cut-off events. For 75/119 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 31767 event pairs, 32 based on Foata normal form. 6/2874 useless extension candidates. Maximal degree in co-relation 3553. Up to 156 conditions per place. [2022-11-20 12:01:03,345 INFO L137 encePairwiseOnDemand]: 299/306 looper letters, 18 selfloop transitions, 5 changer transitions 0/287 dead transitions. [2022-11-20 12:01:03,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 287 transitions, 659 flow [2022-11-20 12:01:03,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:01:03,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:01:03,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 814 transitions. [2022-11-20 12:01:03,349 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8867102396514162 [2022-11-20 12:01:03,349 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 814 transitions. [2022-11-20 12:01:03,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 814 transitions. [2022-11-20 12:01:03,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:01:03,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 814 transitions. [2022-11-20 12:01:03,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 271.3333333333333) internal successors, (814), 3 states have internal predecessors, (814), 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) [2022-11-20 12:01:03,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 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) [2022-11-20 12:01:03,358 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 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) [2022-11-20 12:01:03,358 INFO L175 Difference]: Start difference. First operand has 281 places, 277 transitions, 582 flow. Second operand 3 states and 814 transitions. [2022-11-20 12:01:03,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 287 transitions, 659 flow [2022-11-20 12:01:03,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 287 transitions, 657 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:01:03,369 INFO L231 Difference]: Finished difference. Result has 284 places, 282 transitions, 624 flow [2022-11-20 12:01:03,370 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=624, PETRI_PLACES=284, PETRI_TRANSITIONS=282} [2022-11-20 12:01:03,373 INFO L288 CegarLoopForPetriNet]: 278 programPoint places, 6 predicate places. [2022-11-20 12:01:03,375 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 282 transitions, 624 flow [2022-11-20 12:01:03,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 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) [2022-11-20 12:01:03,376 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:01:03,377 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:03,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:01:03,377 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-20 12:01:03,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:03,378 INFO L85 PathProgramCache]: Analyzing trace with hash -755402237, now seen corresponding path program 1 times [2022-11-20 12:01:03,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:03,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082301648] [2022-11-20 12:01:03,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:03,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:03,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:03,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:03,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082301648] [2022-11-20 12:01:03,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082301648] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:01:03,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825378701] [2022-11-20 12:01:03,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:03,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:01:03,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd63e6-d9a7-42fa-97f3-07150598445b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:01:03,558 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd63e6-d9a7-42fa-97f3-07150598445b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:01:03,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd63e6-d9a7-42fa-97f3-07150598445b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:01:03,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:03,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:01:03,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:01:03,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:01:03,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:01:03,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825378701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:01:03,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:01:03,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-20 12:01:03,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916028409] [2022-11-20 12:01:03,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:01:03,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:01:03,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:03,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:01:03,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:01:03,748 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 306 [2022-11-20 12:01:03,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 282 transitions, 624 flow. Second operand has 3 states, 3 states have (on average 261.6666666666667) internal successors, (785), 3 states have internal predecessors, (785), 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) [2022-11-20 12:01:03,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:01:03,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 306 [2022-11-20 12:01:03,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:01:04,806 INFO L130 PetriNetUnfolder]: 212/5195 cut-off events. [2022-11-20 12:01:04,807 INFO L131 PetriNetUnfolder]: For 263/376 co-relation queries the response was YES. [2022-11-20 12:01:04,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5858 conditions, 5195 events. 212/5195 cut-off events. For 263/376 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 58585 event pairs, 50 based on Foata normal form. 5/4645 useless extension candidates. Maximal degree in co-relation 5850. Up to 242 conditions per place. [2022-11-20 12:01:04,878 INFO L137 encePairwiseOnDemand]: 300/306 looper letters, 25 selfloop transitions, 8 changer transitions 0/294 dead transitions. [2022-11-20 12:01:04,878 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 294 transitions, 742 flow [2022-11-20 12:01:04,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:01:04,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:01:04,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 805 transitions. [2022-11-20 12:01:04,882 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8769063180827886 [2022-11-20 12:01:04,882 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 805 transitions. [2022-11-20 12:01:04,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 805 transitions. [2022-11-20 12:01:04,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:01:04,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 805 transitions. [2022-11-20 12:01:04,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 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) [2022-11-20 12:01:04,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 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) [2022-11-20 12:01:04,888 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 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) [2022-11-20 12:01:04,888 INFO L175 Difference]: Start difference. First operand has 284 places, 282 transitions, 624 flow. Second operand 3 states and 805 transitions. [2022-11-20 12:01:04,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 294 transitions, 742 flow [2022-11-20 12:01:04,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 294 transitions, 724 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:01:04,899 INFO L231 Difference]: Finished difference. Result has 286 places, 288 transitions, 680 flow [2022-11-20 12:01:04,899 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=680, PETRI_PLACES=286, PETRI_TRANSITIONS=288} [2022-11-20 12:01:04,900 INFO L288 CegarLoopForPetriNet]: 278 programPoint places, 8 predicate places. [2022-11-20 12:01:04,900 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 288 transitions, 680 flow [2022-11-20 12:01:04,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.6666666666667) internal successors, (785), 3 states have internal predecessors, (785), 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) [2022-11-20 12:01:04,901 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:01:04,901 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:04,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd63e6-d9a7-42fa-97f3-07150598445b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:01:05,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd63e6-d9a7-42fa-97f3-07150598445b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:01:05,109 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-20 12:01:05,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:05,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1616920704, now seen corresponding path program 1 times [2022-11-20 12:01:05,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:05,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020696694] [2022-11-20 12:01:05,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:05,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:05,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:05,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:05,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:05,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020696694] [2022-11-20 12:01:05,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020696694] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:01:05,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851619521] [2022-11-20 12:01:05,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:05,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:01:05,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd63e6-d9a7-42fa-97f3-07150598445b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:01:05,253 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd63e6-d9a7-42fa-97f3-07150598445b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:01:05,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd63e6-d9a7-42fa-97f3-07150598445b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:01:05,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:05,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:01:05,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:01:05,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:05,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:01:05,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:05,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851619521] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:01:05,652 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:01:05,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 12:01:05,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747733590] [2022-11-20 12:01:05,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:01:05,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:01:05,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:05,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:01:05,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:01:05,662 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 306 [2022-11-20 12:01:05,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 288 transitions, 680 flow. Second operand has 10 states, 10 states have (on average 266.3) internal successors, (2663), 10 states have internal predecessors, (2663), 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) [2022-11-20 12:01:05,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:01:05,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 306 [2022-11-20 12:01:05,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:01:05,864 INFO L130 PetriNetUnfolder]: 9/492 cut-off events. [2022-11-20 12:01:05,864 INFO L131 PetriNetUnfolder]: For 8/11 co-relation queries the response was YES. [2022-11-20 12:01:05,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 492 events. 9/492 cut-off events. For 8/11 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2357 event pairs, 2 based on Foata normal form. 2/448 useless extension candidates. Maximal degree in co-relation 536. Up to 12 conditions per place. [2022-11-20 12:01:05,872 INFO L137 encePairwiseOnDemand]: 301/306 looper letters, 9 selfloop transitions, 7 changer transitions 0/234 dead transitions. [2022-11-20 12:01:05,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 234 transitions, 538 flow [2022-11-20 12:01:05,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:01:05,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:01:05,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2394 transitions. [2022-11-20 12:01:05,879 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.869281045751634 [2022-11-20 12:01:05,880 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2394 transitions. [2022-11-20 12:01:05,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2394 transitions. [2022-11-20 12:01:05,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:01:05,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2394 transitions. [2022-11-20 12:01:05,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 266.0) internal successors, (2394), 9 states have internal predecessors, (2394), 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) [2022-11-20 12:01:05,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 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) [2022-11-20 12:01:05,897 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 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) [2022-11-20 12:01:05,897 INFO L175 Difference]: Start difference. First operand has 286 places, 288 transitions, 680 flow. Second operand 9 states and 2394 transitions. [2022-11-20 12:01:05,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 234 transitions, 538 flow [2022-11-20 12:01:05,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 234 transitions, 528 flow, removed 5 selfloop flow, removed 1 redundant places. [2022-11-20 12:01:05,904 INFO L231 Difference]: Finished difference. Result has 242 places, 230 transitions, 502 flow [2022-11-20 12:01:05,905 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=502, PETRI_PLACES=242, PETRI_TRANSITIONS=230} [2022-11-20 12:01:05,906 INFO L288 CegarLoopForPetriNet]: 278 programPoint places, -36 predicate places. [2022-11-20 12:01:05,906 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 230 transitions, 502 flow [2022-11-20 12:01:05,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 266.3) internal successors, (2663), 10 states have internal predecessors, (2663), 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) [2022-11-20 12:01:05,908 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:01:05,908 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:05,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd63e6-d9a7-42fa-97f3-07150598445b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:01:06,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd63e6-d9a7-42fa-97f3-07150598445b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:01:06,117 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-20 12:01:06,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:06,117 INFO L85 PathProgramCache]: Analyzing trace with hash 984929279, now seen corresponding path program 1 times [2022-11-20 12:01:06,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:06,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777869395] [2022-11-20 12:01:06,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:06,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:06,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:06,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:06,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:06,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777869395] [2022-11-20 12:01:06,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777869395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:01:06,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:01:06,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:01:06,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144370950] [2022-11-20 12:01:06,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:01:06,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:01:06,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:06,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:01:06,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:01:06,173 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 306 [2022-11-20 12:01:06,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 230 transitions, 502 flow. Second operand has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:06,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:01:06,174 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 306 [2022-11-20 12:01:06,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:01:07,008 INFO L130 PetriNetUnfolder]: 708/3286 cut-off events. [2022-11-20 12:01:07,008 INFO L131 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2022-11-20 12:01:07,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4897 conditions, 3286 events. 708/3286 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 29105 event pairs, 268 based on Foata normal form. 0/2860 useless extension candidates. Maximal degree in co-relation 4888. Up to 839 conditions per place. [2022-11-20 12:01:07,057 INFO L137 encePairwiseOnDemand]: 274/306 looper letters, 67 selfloop transitions, 24 changer transitions 0/271 dead transitions. [2022-11-20 12:01:07,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 271 transitions, 771 flow [2022-11-20 12:01:07,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:01:07,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:01:07,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 762 transitions. [2022-11-20 12:01:07,061 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8300653594771242 [2022-11-20 12:01:07,062 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 762 transitions. [2022-11-20 12:01:07,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 762 transitions. [2022-11-20 12:01:07,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:01:07,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 762 transitions. [2022-11-20 12:01:07,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 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) [2022-11-20 12:01:07,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 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) [2022-11-20 12:01:07,070 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 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) [2022-11-20 12:01:07,070 INFO L175 Difference]: Start difference. First operand has 242 places, 230 transitions, 502 flow. Second operand 3 states and 762 transitions. [2022-11-20 12:01:07,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 271 transitions, 771 flow [2022-11-20 12:01:07,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 271 transitions, 756 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-20 12:01:07,079 INFO L231 Difference]: Finished difference. Result has 241 places, 254 transitions, 695 flow [2022-11-20 12:01:07,080 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=695, PETRI_PLACES=241, PETRI_TRANSITIONS=254} [2022-11-20 12:01:07,081 INFO L288 CegarLoopForPetriNet]: 278 programPoint places, -37 predicate places. [2022-11-20 12:01:07,081 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 254 transitions, 695 flow [2022-11-20 12:01:07,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:07,082 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:01:07,082 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:07,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:01:07,083 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-20 12:01:07,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:07,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1452311185, now seen corresponding path program 1 times [2022-11-20 12:01:07,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:07,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468145616] [2022-11-20 12:01:07,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:07,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:07,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:01:07,112 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:01:07,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:01:07,141 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:01:07,141 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 12:01:07,141 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2022-11-20 12:01:07,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (29 of 31 remaining) [2022-11-20 12:01:07,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (28 of 31 remaining) [2022-11-20 12:01:07,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (27 of 31 remaining) [2022-11-20 12:01:07,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (26 of 31 remaining) [2022-11-20 12:01:07,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (25 of 31 remaining) [2022-11-20 12:01:07,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (24 of 31 remaining) [2022-11-20 12:01:07,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (23 of 31 remaining) [2022-11-20 12:01:07,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (22 of 31 remaining) [2022-11-20 12:01:07,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (21 of 31 remaining) [2022-11-20 12:01:07,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (20 of 31 remaining) [2022-11-20 12:01:07,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (19 of 31 remaining) [2022-11-20 12:01:07,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONDATA_RACE (18 of 31 remaining) [2022-11-20 12:01:07,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 31 remaining) [2022-11-20 12:01:07,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (16 of 31 remaining) [2022-11-20 12:01:07,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (15 of 31 remaining) [2022-11-20 12:01:07,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (14 of 31 remaining) [2022-11-20 12:01:07,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (13 of 31 remaining) [2022-11-20 12:01:07,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 31 remaining) [2022-11-20 12:01:07,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (11 of 31 remaining) [2022-11-20 12:01:07,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (10 of 31 remaining) [2022-11-20 12:01:07,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONDATA_RACE (9 of 31 remaining) [2022-11-20 12:01:07,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 31 remaining) [2022-11-20 12:01:07,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (7 of 31 remaining) [2022-11-20 12:01:07,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (6 of 31 remaining) [2022-11-20 12:01:07,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (5 of 31 remaining) [2022-11-20 12:01:07,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (4 of 31 remaining) [2022-11-20 12:01:07,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 31 remaining) [2022-11-20 12:01:07,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 31 remaining) [2022-11-20 12:01:07,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (1 of 31 remaining) [2022-11-20 12:01:07,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONDATA_RACE (0 of 31 remaining) [2022-11-20 12:01:07,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:01:07,151 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:07,152 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 12:01:07,152 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-20 12:01:07,217 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 12:01:07,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 369 places, 409 transitions, 848 flow [2022-11-20 12:01:07,420 INFO L130 PetriNetUnfolder]: 71/675 cut-off events. [2022-11-20 12:01:07,421 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-20 12:01:07,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 703 conditions, 675 events. 71/675 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3218 event pairs, 1 based on Foata normal form. 0/557 useless extension candidates. Maximal degree in co-relation 451. Up to 16 conditions per place. [2022-11-20 12:01:07,437 INFO L82 GeneralOperation]: Start removeDead. Operand has 369 places, 409 transitions, 848 flow [2022-11-20 12:01:07,447 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 369 places, 409 transitions, 848 flow [2022-11-20 12:01:07,448 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:01:07,449 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;@5ffdf51c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:01:07,449 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2022-11-20 12:01:07,454 INFO L130 PetriNetUnfolder]: 1/51 cut-off events. [2022-11-20 12:01:07,454 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:01:07,454 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:01:07,454 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:07,455 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-11-20 12:01:07,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:07,455 INFO L85 PathProgramCache]: Analyzing trace with hash 2086717007, now seen corresponding path program 1 times [2022-11-20 12:01:07,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:07,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153491821] [2022-11-20 12:01:07,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:07,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:07,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:07,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:07,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153491821] [2022-11-20 12:01:07,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153491821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:01:07,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:01:07,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:01:07,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153161021] [2022-11-20 12:01:07,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:01:07,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 12:01:07,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:07,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 12:01:07,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:01:07,485 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 361 out of 409 [2022-11-20 12:01:07,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 409 transitions, 848 flow. Second operand has 2 states, 2 states have (on average 361.5) internal successors, (723), 2 states have internal predecessors, (723), 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) [2022-11-20 12:01:07,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:01:07,487 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 361 of 409 [2022-11-20 12:01:07,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:01:07,681 INFO L130 PetriNetUnfolder]: 11/611 cut-off events. [2022-11-20 12:01:07,681 INFO L131 PetriNetUnfolder]: For 54/69 co-relation queries the response was YES. [2022-11-20 12:01:07,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 655 conditions, 611 events. 11/611 cut-off events. For 54/69 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2764 event pairs, 1 based on Foata normal form. 172/721 useless extension candidates. Maximal degree in co-relation 414. Up to 16 conditions per place. [2022-11-20 12:01:07,701 INFO L137 encePairwiseOnDemand]: 368/409 looper letters, 6 selfloop transitions, 0 changer transitions 0/367 dead transitions. [2022-11-20 12:01:07,701 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 367 transitions, 776 flow [2022-11-20 12:01:07,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 12:01:07,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 12:01:07,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 769 transitions. [2022-11-20 12:01:07,704 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9400977995110025 [2022-11-20 12:01:07,704 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 769 transitions. [2022-11-20 12:01:07,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 769 transitions. [2022-11-20 12:01:07,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:01:07,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 769 transitions. [2022-11-20 12:01:07,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 384.5) internal successors, (769), 2 states have internal predecessors, (769), 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) [2022-11-20 12:01:07,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 409.0) internal successors, (1227), 3 states have internal predecessors, (1227), 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) [2022-11-20 12:01:07,710 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 409.0) internal successors, (1227), 3 states have internal predecessors, (1227), 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) [2022-11-20 12:01:07,711 INFO L175 Difference]: Start difference. First operand has 369 places, 409 transitions, 848 flow. Second operand 2 states and 769 transitions. [2022-11-20 12:01:07,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 367 transitions, 776 flow [2022-11-20 12:01:07,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 367 transitions, 776 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:01:07,719 INFO L231 Difference]: Finished difference. Result has 369 places, 367 transitions, 764 flow [2022-11-20 12:01:07,721 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=409, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=764, PETRI_PLACES=369, PETRI_TRANSITIONS=367} [2022-11-20 12:01:07,722 INFO L288 CegarLoopForPetriNet]: 369 programPoint places, 0 predicate places. [2022-11-20 12:01:07,722 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 367 transitions, 764 flow [2022-11-20 12:01:07,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 361.5) internal successors, (723), 2 states have internal predecessors, (723), 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) [2022-11-20 12:01:07,723 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:01:07,723 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:07,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:01:07,724 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-11-20 12:01:07,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:07,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1320746608, now seen corresponding path program 1 times [2022-11-20 12:01:07,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:07,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097230853] [2022-11-20 12:01:07,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:07,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:07,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:07,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:07,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097230853] [2022-11-20 12:01:07,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097230853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:01:07,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:01:07,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:01:07,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835447538] [2022-11-20 12:01:07,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:01:07,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:01:07,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:07,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:01:07,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:01:07,796 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 354 out of 409 [2022-11-20 12:01:07,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 367 transitions, 764 flow. Second operand has 3 states, 3 states have (on average 355.0) internal successors, (1065), 3 states have internal predecessors, (1065), 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) [2022-11-20 12:01:07,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:01:07,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 354 of 409 [2022-11-20 12:01:07,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:01:08,006 INFO L130 PetriNetUnfolder]: 10/583 cut-off events. [2022-11-20 12:01:08,006 INFO L131 PetriNetUnfolder]: For 67/162 co-relation queries the response was YES. [2022-11-20 12:01:08,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 647 conditions, 583 events. 10/583 cut-off events. For 67/162 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2551 event pairs, 1 based on Foata normal form. 1/526 useless extension candidates. Maximal degree in co-relation 641. Up to 30 conditions per place. [2022-11-20 12:01:08,025 INFO L137 encePairwiseOnDemand]: 406/409 looper letters, 15 selfloop transitions, 2 changer transitions 0/371 dead transitions. [2022-11-20 12:01:08,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 371 transitions, 806 flow [2022-11-20 12:01:08,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:01:08,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:01:08,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1080 transitions. [2022-11-20 12:01:08,029 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8801955990220048 [2022-11-20 12:01:08,029 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1080 transitions. [2022-11-20 12:01:08,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1080 transitions. [2022-11-20 12:01:08,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:01:08,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1080 transitions. [2022-11-20 12:01:08,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 360.0) internal successors, (1080), 3 states have internal predecessors, (1080), 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) [2022-11-20 12:01:08,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 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) [2022-11-20 12:01:08,037 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 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) [2022-11-20 12:01:08,037 INFO L175 Difference]: Start difference. First operand has 369 places, 367 transitions, 764 flow. Second operand 3 states and 1080 transitions. [2022-11-20 12:01:08,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 371 transitions, 806 flow [2022-11-20 12:01:08,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 371 transitions, 806 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:01:08,045 INFO L231 Difference]: Finished difference. Result has 372 places, 368 transitions, 776 flow [2022-11-20 12:01:08,046 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=409, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=776, PETRI_PLACES=372, PETRI_TRANSITIONS=368} [2022-11-20 12:01:08,047 INFO L288 CegarLoopForPetriNet]: 369 programPoint places, 3 predicate places. [2022-11-20 12:01:08,048 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 368 transitions, 776 flow [2022-11-20 12:01:08,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 355.0) internal successors, (1065), 3 states have internal predecessors, (1065), 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) [2022-11-20 12:01:08,049 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:01:08,049 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:08,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 12:01:08,049 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-11-20 12:01:08,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:08,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1228940335, now seen corresponding path program 1 times [2022-11-20 12:01:08,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:08,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390410100] [2022-11-20 12:01:08,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:08,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:08,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:08,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:08,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390410100] [2022-11-20 12:01:08,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390410100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:01:08,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:01:08,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:01:08,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671357390] [2022-11-20 12:01:08,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:01:08,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:01:08,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:08,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:01:08,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:01:08,105 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 349 out of 409 [2022-11-20 12:01:08,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 368 transitions, 776 flow. Second operand has 3 states, 3 states have (on average 350.0) internal successors, (1050), 3 states have internal predecessors, (1050), 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) [2022-11-20 12:01:08,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:01:08,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 349 of 409 [2022-11-20 12:01:08,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:01:12,335 INFO L130 PetriNetUnfolder]: 1069/17207 cut-off events. [2022-11-20 12:01:12,336 INFO L131 PetriNetUnfolder]: For 668/1071 co-relation queries the response was YES. [2022-11-20 12:01:12,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18960 conditions, 17207 events. 1069/17207 cut-off events. For 668/1071 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 235389 event pairs, 290 based on Foata normal form. 23/15094 useless extension candidates. Maximal degree in co-relation 18952. Up to 1038 conditions per place. [2022-11-20 12:01:12,717 INFO L137 encePairwiseOnDemand]: 399/409 looper letters, 25 selfloop transitions, 7 changer transitions 0/382 dead transitions. [2022-11-20 12:01:12,718 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 382 transitions, 889 flow [2022-11-20 12:01:12,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:01:12,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:01:12,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1082 transitions. [2022-11-20 12:01:12,721 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8818255908720456 [2022-11-20 12:01:12,721 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1082 transitions. [2022-11-20 12:01:12,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1082 transitions. [2022-11-20 12:01:12,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:01:12,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1082 transitions. [2022-11-20 12:01:12,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 360.6666666666667) internal successors, (1082), 3 states have internal predecessors, (1082), 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) [2022-11-20 12:01:12,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 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) [2022-11-20 12:01:12,730 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 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) [2022-11-20 12:01:12,730 INFO L175 Difference]: Start difference. First operand has 372 places, 368 transitions, 776 flow. Second operand 3 states and 1082 transitions. [2022-11-20 12:01:12,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 382 transitions, 889 flow [2022-11-20 12:01:12,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 382 transitions, 887 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:01:12,739 INFO L231 Difference]: Finished difference. Result has 375 places, 375 transitions, 836 flow [2022-11-20 12:01:12,740 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=409, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=836, PETRI_PLACES=375, PETRI_TRANSITIONS=375} [2022-11-20 12:01:12,741 INFO L288 CegarLoopForPetriNet]: 369 programPoint places, 6 predicate places. [2022-11-20 12:01:12,741 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 375 transitions, 836 flow [2022-11-20 12:01:12,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 350.0) internal successors, (1050), 3 states have internal predecessors, (1050), 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) [2022-11-20 12:01:12,742 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:01:12,742 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:12,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 12:01:12,743 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-11-20 12:01:12,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:12,744 INFO L85 PathProgramCache]: Analyzing trace with hash 395818824, now seen corresponding path program 1 times [2022-11-20 12:01:12,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:12,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804741964] [2022-11-20 12:01:12,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:12,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:12,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:12,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:12,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804741964] [2022-11-20 12:01:12,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804741964] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:01:12,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754330933] [2022-11-20 12:01:12,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:12,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:01:12,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd63e6-d9a7-42fa-97f3-07150598445b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:01:12,844 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd63e6-d9a7-42fa-97f3-07150598445b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:01:12,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd63e6-d9a7-42fa-97f3-07150598445b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:01:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:12,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:01:12,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:01:13,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:01:13,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:01:13,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754330933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:01:13,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:01:13,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-20 12:01:13,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945225654] [2022-11-20 12:01:13,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:01:13,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:01:13,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:13,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:01:13,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:01:13,013 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 409 [2022-11-20 12:01:13,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 375 transitions, 836 flow. Second operand has 3 states, 3 states have (on average 347.6666666666667) internal successors, (1043), 3 states have internal predecessors, (1043), 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) [2022-11-20 12:01:13,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:01:13,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 409 [2022-11-20 12:01:13,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:01:18,778 INFO L130 PetriNetUnfolder]: 1485/27397 cut-off events. [2022-11-20 12:01:18,778 INFO L131 PetriNetUnfolder]: For 1881/3940 co-relation queries the response was YES. [2022-11-20 12:01:19,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31479 conditions, 27397 events. 1485/27397 cut-off events. For 1881/3940 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 420125 event pairs, 395 based on Foata normal form. 18/24488 useless extension candidates. Maximal degree in co-relation 31470. Up to 1514 conditions per place. [2022-11-20 12:01:19,235 INFO L137 encePairwiseOnDemand]: 402/409 looper letters, 35 selfloop transitions, 10 changer transitions 0/392 dead transitions. [2022-11-20 12:01:19,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 392 transitions, 1002 flow [2022-11-20 12:01:19,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:01:19,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:01:19,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1071 transitions. [2022-11-20 12:01:19,240 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8728606356968215 [2022-11-20 12:01:19,240 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1071 transitions. [2022-11-20 12:01:19,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1071 transitions. [2022-11-20 12:01:19,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:01:19,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1071 transitions. [2022-11-20 12:01:19,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 357.0) internal successors, (1071), 3 states have internal predecessors, (1071), 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) [2022-11-20 12:01:19,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 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) [2022-11-20 12:01:19,262 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 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) [2022-11-20 12:01:19,262 INFO L175 Difference]: Start difference. First operand has 375 places, 375 transitions, 836 flow. Second operand 3 states and 1071 transitions. [2022-11-20 12:01:19,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 392 transitions, 1002 flow [2022-11-20 12:01:19,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 392 transitions, 976 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:01:19,276 INFO L231 Difference]: Finished difference. Result has 377 places, 383 transitions, 908 flow [2022-11-20 12:01:19,277 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=409, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=908, PETRI_PLACES=377, PETRI_TRANSITIONS=383} [2022-11-20 12:01:19,279 INFO L288 CegarLoopForPetriNet]: 369 programPoint places, 8 predicate places. [2022-11-20 12:01:19,279 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 383 transitions, 908 flow [2022-11-20 12:01:19,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 347.6666666666667) internal successors, (1043), 3 states have internal predecessors, (1043), 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) [2022-11-20 12:01:19,280 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:01:19,280 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:19,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd63e6-d9a7-42fa-97f3-07150598445b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:01:19,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd63e6-d9a7-42fa-97f3-07150598445b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 12:01:19,489 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-11-20 12:01:19,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:19,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1413264712, now seen corresponding path program 1 times [2022-11-20 12:01:19,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:19,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550167556] [2022-11-20 12:01:19,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:19,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:19,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:19,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:19,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:19,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550167556] [2022-11-20 12:01:19,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550167556] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:01:19,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691918929] [2022-11-20 12:01:19,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:19,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:01:19,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd63e6-d9a7-42fa-97f3-07150598445b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:01:19,601 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd63e6-d9a7-42fa-97f3-07150598445b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:01:19,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd63e6-d9a7-42fa-97f3-07150598445b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:01:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:19,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:01:19,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:01:19,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:19,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:01:19,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:19,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691918929] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:01:19,886 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:01:19,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 12:01:19,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54048838] [2022-11-20 12:01:19,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:01:19,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:01:19,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:19,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:01:19,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:01:19,896 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 409 [2022-11-20 12:01:19,900 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 383 transitions, 908 flow. Second operand has 10 states, 10 states have (on average 355.3) internal successors, (3553), 10 states have internal predecessors, (3553), 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) [2022-11-20 12:01:19,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:01:19,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 409 [2022-11-20 12:01:19,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:01:24,241 INFO L130 PetriNetUnfolder]: 706/17513 cut-off events. [2022-11-20 12:01:24,241 INFO L131 PetriNetUnfolder]: For 1217/1486 co-relation queries the response was YES. [2022-11-20 12:01:24,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19480 conditions, 17513 events. 706/17513 cut-off events. For 1217/1486 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 257515 event pairs, 164 based on Foata normal form. 15/15552 useless extension candidates. Maximal degree in co-relation 19470. Up to 682 conditions per place. [2022-11-20 12:01:24,590 INFO L137 encePairwiseOnDemand]: 403/409 looper letters, 16 selfloop transitions, 9 changer transitions 0/393 dead transitions. [2022-11-20 12:01:24,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 393 transitions, 980 flow [2022-11-20 12:01:24,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:01:24,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:01:24,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3204 transitions. [2022-11-20 12:01:24,599 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8704156479217604 [2022-11-20 12:01:24,600 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3204 transitions. [2022-11-20 12:01:24,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3204 transitions. [2022-11-20 12:01:24,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:01:24,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3204 transitions. [2022-11-20 12:01:24,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 356.0) internal successors, (3204), 9 states have internal predecessors, (3204), 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) [2022-11-20 12:01:24,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 409.0) internal successors, (4090), 10 states have internal predecessors, (4090), 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) [2022-11-20 12:01:24,620 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 409.0) internal successors, (4090), 10 states have internal predecessors, (4090), 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) [2022-11-20 12:01:24,621 INFO L175 Difference]: Start difference. First operand has 377 places, 383 transitions, 908 flow. Second operand 9 states and 3204 transitions. [2022-11-20 12:01:24,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 393 transitions, 980 flow [2022-11-20 12:01:24,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 393 transitions, 960 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:01:24,633 INFO L231 Difference]: Finished difference. Result has 386 places, 389 transitions, 938 flow [2022-11-20 12:01:24,634 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=409, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=938, PETRI_PLACES=386, PETRI_TRANSITIONS=389} [2022-11-20 12:01:24,635 INFO L288 CegarLoopForPetriNet]: 369 programPoint places, 17 predicate places. [2022-11-20 12:01:24,635 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 389 transitions, 938 flow [2022-11-20 12:01:24,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 355.3) internal successors, (3553), 10 states have internal predecessors, (3553), 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) [2022-11-20 12:01:24,636 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:01:24,637 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:24,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd63e6-d9a7-42fa-97f3-07150598445b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:01:24,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97fd63e6-d9a7-42fa-97f3-07150598445b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 12:01:24,855 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-11-20 12:01:24,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:24,855 INFO L85 PathProgramCache]: Analyzing trace with hash 2048044580, now seen corresponding path program 1 times [2022-11-20 12:01:24,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:24,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879284965] [2022-11-20 12:01:24,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:24,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:24,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:24,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:24,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879284965] [2022-11-20 12:01:24,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879284965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:01:24,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:01:24,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:01:24,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072725270] [2022-11-20 12:01:24,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:01:24,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:01:24,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:24,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:01:24,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:01:24,918 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 409 [2022-11-20 12:01:24,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 389 transitions, 938 flow. Second operand has 3 states, 3 states have (on average 287.0) internal successors, (861), 3 states have internal predecessors, (861), 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) [2022-11-20 12:01:24,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:01:24,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 409 [2022-11-20 12:01:24,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:02:03,415 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1350] L942-2-->L942-3: Formula: (= |v_#race~global~0_17| 0) InVars {} OutVars{#race~global~0=|v_#race~global~0_17|} AuxVars[] AssignedVars[#race~global~0][240], [326#L942-3true, Black: 380#true, 248#L961-3true, 926#(= |#race~global~0| 0), Black: 550#(= |#race~f~0| |ULTIMATE.start_main_#t~nondet49#1|), 554#true, t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0InUse, 65#L938-8true, t_funThread3of3ForFork0InUse, 372#true, 180#L938-8true, Black: 558#(<= |ULTIMATE.start_main_~i~0#1| 1), Black: 771#(< |ULTIMATE.start_main_~i~0#1| 10000), Black: 377#(= |ULTIMATE.start_main_~i~0#1| 0)]) [2022-11-20 12:02:03,415 INFO L383 tUnfolder$Statistics]: this new event has 144 ancestors and is cut-off event [2022-11-20 12:02:03,415 INFO L386 tUnfolder$Statistics]: existing Event has 144 ancestors and is cut-off event [2022-11-20 12:02:03,415 INFO L386 tUnfolder$Statistics]: existing Event has 144 ancestors and is cut-off event [2022-11-20 12:02:03,416 INFO L386 tUnfolder$Statistics]: existing Event has 144 ancestors and is cut-off event [2022-11-20 12:02:06,544 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1350] L942-2-->L942-3: Formula: (= |v_#race~global~0_17| 0) InVars {} OutVars{#race~global~0=|v_#race~global~0_17|} AuxVars[] AssignedVars[#race~global~0][240], [326#L942-3true, Black: 380#true, 248#L961-3true, 926#(= |#race~global~0| 0), Black: 550#(= |#race~f~0| |ULTIMATE.start_main_#t~nondet49#1|), 554#true, 321#L938-9true, t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0InUse, 372#true, 180#L938-8true, Black: 558#(<= |ULTIMATE.start_main_~i~0#1| 1), Black: 771#(< |ULTIMATE.start_main_~i~0#1| 10000), Black: 377#(= |ULTIMATE.start_main_~i~0#1| 0)]) [2022-11-20 12:02:06,544 INFO L383 tUnfolder$Statistics]: this new event has 145 ancestors and is cut-off event [2022-11-20 12:02:06,545 INFO L386 tUnfolder$Statistics]: existing Event has 145 ancestors and is cut-off event [2022-11-20 12:02:06,545 INFO L386 tUnfolder$Statistics]: existing Event has 145 ancestors and is cut-off event [2022-11-20 12:02:06,545 INFO L386 tUnfolder$Statistics]: existing Event has 145 ancestors and is cut-off event