./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 38b53e6a 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_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R --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 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df --- 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-38b53e6 [2022-11-25 18:29:42,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:29:42,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:29:42,873 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:29:42,873 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:29:42,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:29:42,878 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:29:42,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:29:42,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:29:42,882 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:29:42,883 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:29:42,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:29:42,890 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:29:42,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:29:42,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:29:42,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:29:42,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:29:42,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:29:42,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:29:42,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:29:42,911 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:29:42,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:29:42,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:29:42,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:29:42,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:29:42,918 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:29:42,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:29:42,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:29:42,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:29:42,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:29:42,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:29:42,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:29:42,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:29:42,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:29:42,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:29:42,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:29:42,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:29:42,926 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:29:42,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:29:42,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:29:42,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:29:42,929 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-25 18:29:42,952 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:29:42,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:29:42,952 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:29:42,953 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:29:42,953 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:29:42,954 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:29:42,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:29:42,955 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:29:42,955 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:29:42,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:29:42,955 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:29:42,956 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:29:42,956 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:29:42,956 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:29:42,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:29:42,957 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:29:42,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:29:42,957 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:29:42,957 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-25 18:29:42,957 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:29:42,958 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:29:42,958 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:29:42,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:29:42,958 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:29:42,958 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:29:42,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:29:42,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:29:42,959 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:29:42,959 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:29:42,960 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:29:42,960 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:29:42,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:29:42,960 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:29:42,960 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:29:42,961 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:29:42,961 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:29:42,961 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df [2022-11-25 18:29:43,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:29:43,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:29:43,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:29:43,368 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:29:43,371 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:29:43,372 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2022-11-25 18:29:46,448 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:29:46,898 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:29:46,899 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2022-11-25 18:29:46,922 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/data/f2defb3a4/9b0baacde3574eb08f8a921108c0fefc/FLAGf476a6fb7 [2022-11-25 18:29:47,042 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/data/f2defb3a4/9b0baacde3574eb08f8a921108c0fefc [2022-11-25 18:29:47,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:29:47,047 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:29:47,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:29:47,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:29:47,052 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:29:47,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:29:47" (1/1) ... [2022-11-25 18:29:47,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@188f30cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:47, skipping insertion in model container [2022-11-25 18:29:47,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:29:47" (1/1) ... [2022-11-25 18:29:47,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:29:47,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:29:47,629 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_1323ff10-9149-4d69-8aae-f79324049d8a/sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i[41323,41336] [2022-11-25 18:29:47,686 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:29:47,711 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:29:47,758 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_1323ff10-9149-4d69-8aae-f79324049d8a/sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i[41323,41336] [2022-11-25 18:29:47,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:29:47,846 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:29:47,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:47 WrapperNode [2022-11-25 18:29:47,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:29:47,848 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:29:47,849 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:29:47,849 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:29:47,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:47" (1/1) ... [2022-11-25 18:29:47,884 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:47" (1/1) ... [2022-11-25 18:29:47,925 INFO L138 Inliner]: procedures = 270, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 249 [2022-11-25 18:29:47,926 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:29:47,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:29:47,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:29:47,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:29:47,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:47" (1/1) ... [2022-11-25 18:29:47,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:47" (1/1) ... [2022-11-25 18:29:47,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:47" (1/1) ... [2022-11-25 18:29:47,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:47" (1/1) ... [2022-11-25 18:29:47,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:47" (1/1) ... [2022-11-25 18:29:47,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:47" (1/1) ... [2022-11-25 18:29:47,986 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:47" (1/1) ... [2022-11-25 18:29:47,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:47" (1/1) ... [2022-11-25 18:29:47,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:29:47,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:29:47,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:29:47,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:29:47,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:47" (1/1) ... [2022-11-25 18:29:48,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:29:48,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:29:48,030 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:29:48,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:29:48,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:29:48,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:29:48,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 18:29:48,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 18:29:48,072 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 18:29:48,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:29:48,073 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-25 18:29:48,073 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-25 18:29:48,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:29:48,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:29:48,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:29:48,075 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 18:29:48,329 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:29:48,331 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:29:48,865 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:29:48,888 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:29:48,888 INFO L300 CfgBuilder]: Removed 23 assume(true) statements. [2022-11-25 18:29:48,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:29:48 BoogieIcfgContainer [2022-11-25 18:29:48,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:29:48,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:29:48,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:29:48,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:29:48,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:29:47" (1/3) ... [2022-11-25 18:29:48,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77c663e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:29:48, skipping insertion in model container [2022-11-25 18:29:48,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:47" (2/3) ... [2022-11-25 18:29:48,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77c663e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:29:48, skipping insertion in model container [2022-11-25 18:29:48,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:29:48" (3/3) ... [2022-11-25 18:29:48,903 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_75-tricky_address2_racefree.i [2022-11-25 18:29:48,912 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 18:29:48,922 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:29:48,922 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-11-25 18:29:48,922 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:29:49,029 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-25 18:29:49,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 269 transitions, 546 flow [2022-11-25 18:29:49,311 INFO L130 PetriNetUnfolder]: 45/380 cut-off events. [2022-11-25 18:29:49,311 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 18:29:49,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386 conditions, 380 events. 45/380 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1550 event pairs, 0 based on Foata normal form. 0/315 useless extension candidates. Maximal degree in co-relation 219. Up to 8 conditions per place. [2022-11-25 18:29:49,339 INFO L82 GeneralOperation]: Start removeDead. Operand has 241 places, 269 transitions, 546 flow [2022-11-25 18:29:49,357 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 241 places, 269 transitions, 546 flow [2022-11-25 18:29:49,364 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:29:49,393 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 241 places, 269 transitions, 546 flow [2022-11-25 18:29:49,396 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 241 places, 269 transitions, 546 flow [2022-11-25 18:29:49,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 269 transitions, 546 flow [2022-11-25 18:29:49,517 INFO L130 PetriNetUnfolder]: 45/380 cut-off events. [2022-11-25 18:29:49,518 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 18:29:49,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386 conditions, 380 events. 45/380 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1550 event pairs, 0 based on Foata normal form. 0/315 useless extension candidates. Maximal degree in co-relation 219. Up to 8 conditions per place. [2022-11-25 18:29:49,534 INFO L119 LiptonReduction]: Number of co-enabled transitions 24102 [2022-11-25 18:29:57,278 INFO L134 LiptonReduction]: Checked pairs total: 205522 [2022-11-25 18:29:57,279 INFO L136 LiptonReduction]: Total number of compositions: 231 [2022-11-25 18:29:57,300 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:29:57,312 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;@3e19431d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:29:57,313 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-25 18:29:57,323 INFO L130 PetriNetUnfolder]: 12/44 cut-off events. [2022-11-25 18:29:57,324 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:29:57,325 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:29:57,327 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-25 18:29:57,328 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-25 18:29:57,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:29:57,336 INFO L85 PathProgramCache]: Analyzing trace with hash 752736813, now seen corresponding path program 1 times [2022-11-25 18:29:57,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:29:57,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714283794] [2022-11-25 18:29:57,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:29:57,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:29:57,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:29:57,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 18:29:57,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:29:57,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714283794] [2022-11-25 18:29:57,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714283794] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:29:57,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:29:57,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:29:57,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852722150] [2022-11-25 18:29:57,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:29:57,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:29:57,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:29:57,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:29:57,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:29:57,810 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 500 [2022-11-25 18:29:57,818 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 133 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 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) [2022-11-25 18:29:57,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:29:57,823 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 500 [2022-11-25 18:29:57,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:29:58,208 INFO L130 PetriNetUnfolder]: 399/1560 cut-off events. [2022-11-25 18:29:58,208 INFO L131 PetriNetUnfolder]: For 3/5 co-relation queries the response was YES. [2022-11-25 18:29:58,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2353 conditions, 1560 events. 399/1560 cut-off events. For 3/5 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 11046 event pairs, 357 based on Foata normal form. 142/1555 useless extension candidates. Maximal degree in co-relation 2253. Up to 785 conditions per place. [2022-11-25 18:29:58,221 INFO L137 encePairwiseOnDemand]: 476/500 looper letters, 43 selfloop transitions, 2 changer transitions 0/113 dead transitions. [2022-11-25 18:29:58,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 113 transitions, 324 flow [2022-11-25 18:29:58,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:29:58,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:29:58,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 769 transitions. [2022-11-25 18:29:58,240 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5126666666666667 [2022-11-25 18:29:58,241 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 769 transitions. [2022-11-25 18:29:58,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 769 transitions. [2022-11-25 18:29:58,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:29:58,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 769 transitions. [2022-11-25 18:29:58,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 256.3333333333333) internal successors, (769), 3 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) [2022-11-25 18:29:58,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 500.0) internal successors, (2000), 4 states have internal predecessors, (2000), 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) [2022-11-25 18:29:58,263 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 500.0) internal successors, (2000), 4 states have internal predecessors, (2000), 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) [2022-11-25 18:29:58,265 INFO L175 Difference]: Start difference. First operand has 111 places, 133 transitions, 274 flow. Second operand 3 states and 769 transitions. [2022-11-25 18:29:58,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 113 transitions, 324 flow [2022-11-25 18:29:58,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 113 transitions, 324 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 18:29:58,274 INFO L231 Difference]: Finished difference. Result has 114 places, 113 transitions, 244 flow [2022-11-25 18:29:58,276 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=500, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=114, PETRI_TRANSITIONS=113} [2022-11-25 18:29:58,280 INFO L288 CegarLoopForPetriNet]: 111 programPoint places, 3 predicate places. [2022-11-25 18:29:58,281 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 113 transitions, 244 flow [2022-11-25 18:29:58,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 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) [2022-11-25 18:29:58,282 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:29:58,282 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-25 18:29:58,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:29:58,283 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-25 18:29:58,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:29:58,284 INFO L85 PathProgramCache]: Analyzing trace with hash -198071314, now seen corresponding path program 1 times [2022-11-25 18:29:58,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:29:58,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883042054] [2022-11-25 18:29:58,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:29:58,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:29:58,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:29:58,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 18:29:58,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:29:58,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883042054] [2022-11-25 18:29:58,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883042054] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:29:58,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334428213] [2022-11-25 18:29:58,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:29:58,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:29:58,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:29:58,434 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:29:58,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 18:29:58,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:29:58,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:29:58,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:29:58,642 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 18:29:58,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:29:58,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 18:29:58,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334428213] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:29:58,675 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:29:58,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-25 18:29:58,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842161524] [2022-11-25 18:29:58,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:29:58,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:29:58,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:29:58,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:29:58,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:29:58,731 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 500 [2022-11-25 18:29:58,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 113 transitions, 244 flow. Second operand has 7 states, 7 states have (on average 234.57142857142858) internal successors, (1642), 7 states have internal predecessors, (1642), 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) [2022-11-25 18:29:58,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:29:58,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 500 [2022-11-25 18:29:58,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:29:59,203 INFO L130 PetriNetUnfolder]: 399/1563 cut-off events. [2022-11-25 18:29:59,203 INFO L131 PetriNetUnfolder]: For 3/5 co-relation queries the response was YES. [2022-11-25 18:29:59,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2369 conditions, 1563 events. 399/1563 cut-off events. For 3/5 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 11013 event pairs, 357 based on Foata normal form. 0/1416 useless extension candidates. Maximal degree in co-relation 2357. Up to 785 conditions per place. [2022-11-25 18:29:59,212 INFO L137 encePairwiseOnDemand]: 497/500 looper letters, 43 selfloop transitions, 5 changer transitions 0/116 dead transitions. [2022-11-25 18:29:59,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 116 transitions, 352 flow [2022-11-25 18:29:59,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:29:59,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:29:59,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1449 transitions. [2022-11-25 18:29:59,217 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.483 [2022-11-25 18:29:59,218 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1449 transitions. [2022-11-25 18:29:59,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1449 transitions. [2022-11-25 18:29:59,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:29:59,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1449 transitions. [2022-11-25 18:29:59,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 241.5) internal successors, (1449), 6 states have internal predecessors, (1449), 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) [2022-11-25 18:29:59,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 500.0) internal successors, (3500), 7 states have internal predecessors, (3500), 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) [2022-11-25 18:29:59,233 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 500.0) internal successors, (3500), 7 states have internal predecessors, (3500), 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) [2022-11-25 18:29:59,233 INFO L175 Difference]: Start difference. First operand has 114 places, 113 transitions, 244 flow. Second operand 6 states and 1449 transitions. [2022-11-25 18:29:59,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 116 transitions, 352 flow [2022-11-25 18:29:59,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 116 transitions, 348 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 18:29:59,239 INFO L231 Difference]: Finished difference. Result has 121 places, 116 transitions, 276 flow [2022-11-25 18:29:59,240 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=500, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=276, PETRI_PLACES=121, PETRI_TRANSITIONS=116} [2022-11-25 18:29:59,241 INFO L288 CegarLoopForPetriNet]: 111 programPoint places, 10 predicate places. [2022-11-25 18:29:59,241 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 116 transitions, 276 flow [2022-11-25 18:29:59,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 234.57142857142858) internal successors, (1642), 7 states have internal predecessors, (1642), 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) [2022-11-25 18:29:59,243 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:29:59,243 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2022-11-25 18:29:59,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 18:29:59,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:29:59,450 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-25 18:29:59,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:29:59,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1277477485, now seen corresponding path program 2 times [2022-11-25 18:29:59,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:29:59,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522269014] [2022-11-25 18:29:59,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:29:59,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:29:59,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:29:59,586 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 18:29:59,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:29:59,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522269014] [2022-11-25 18:29:59,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522269014] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:29:59,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697356889] [2022-11-25 18:29:59,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:29:59,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:29:59,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:29:59,589 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:29:59,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 18:29:59,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:29:59,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:29:59,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 18:29:59,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:29:59,726 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 18:29:59,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:29:59,787 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 18:29:59,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697356889] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:29:59,788 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:29:59,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-25 18:29:59,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264220626] [2022-11-25 18:29:59,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:29:59,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 18:29:59,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:29:59,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 18:29:59,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-25 18:29:59,839 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 500 [2022-11-25 18:29:59,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 116 transitions, 276 flow. Second operand has 13 states, 13 states have (on average 234.30769230769232) internal successors, (3046), 13 states have internal predecessors, (3046), 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) [2022-11-25 18:29:59,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:29:59,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 500 [2022-11-25 18:29:59,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:30:00,212 INFO L130 PetriNetUnfolder]: 399/1569 cut-off events. [2022-11-25 18:30:00,212 INFO L131 PetriNetUnfolder]: For 23/25 co-relation queries the response was YES. [2022-11-25 18:30:00,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2406 conditions, 1569 events. 399/1569 cut-off events. For 23/25 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 11023 event pairs, 357 based on Foata normal form. 6/1429 useless extension candidates. Maximal degree in co-relation 2348. Up to 785 conditions per place. [2022-11-25 18:30:00,222 INFO L137 encePairwiseOnDemand]: 497/500 looper letters, 43 selfloop transitions, 11 changer transitions 0/122 dead transitions. [2022-11-25 18:30:00,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 122 transitions, 420 flow [2022-11-25 18:30:00,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 18:30:00,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 18:30:00,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2856 transitions. [2022-11-25 18:30:00,230 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.476 [2022-11-25 18:30:00,230 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2856 transitions. [2022-11-25 18:30:00,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2856 transitions. [2022-11-25 18:30:00,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:30:00,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2856 transitions. [2022-11-25 18:30:00,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 238.0) internal successors, (2856), 12 states have internal predecessors, (2856), 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) [2022-11-25 18:30:00,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 500.0) internal successors, (6500), 13 states have internal predecessors, (6500), 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) [2022-11-25 18:30:00,252 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 500.0) internal successors, (6500), 13 states have internal predecessors, (6500), 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) [2022-11-25 18:30:00,253 INFO L175 Difference]: Start difference. First operand has 121 places, 116 transitions, 276 flow. Second operand 12 states and 2856 transitions. [2022-11-25 18:30:00,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 122 transitions, 420 flow [2022-11-25 18:30:00,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 122 transitions, 406 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-25 18:30:00,257 INFO L231 Difference]: Finished difference. Result has 137 places, 122 transitions, 346 flow [2022-11-25 18:30:00,258 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=500, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=346, PETRI_PLACES=137, PETRI_TRANSITIONS=122} [2022-11-25 18:30:00,259 INFO L288 CegarLoopForPetriNet]: 111 programPoint places, 26 predicate places. [2022-11-25 18:30:00,259 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 122 transitions, 346 flow [2022-11-25 18:30:00,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 234.30769230769232) internal successors, (3046), 13 states have internal predecessors, (3046), 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) [2022-11-25 18:30:00,261 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:30:00,261 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2022-11-25 18:30:00,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 18:30:00,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:30:00,470 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-25 18:30:00,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:30:00,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1921884877, now seen corresponding path program 3 times [2022-11-25 18:30:00,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:30:00,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709121916] [2022-11-25 18:30:00,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:30:00,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:30:00,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:30:00,552 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:30:00,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:30:00,615 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:30:00,616 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 18:30:00,617 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-25 18:30:00,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-11-25 18:30:00,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-11-25 18:30:00,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-11-25 18:30:00,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-11-25 18:30:00,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-11-25 18:30:00,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-11-25 18:30:00,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-11-25 18:30:00,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-11-25 18:30:00,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-11-25 18:30:00,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-11-25 18:30:00,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2022-11-25 18:30:00,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-11-25 18:30:00,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-11-25 18:30:00,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-11-25 18:30:00,622 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-11-25 18:30:00,622 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-11-25 18:30:00,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 18:30:00,623 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2022-11-25 18:30:00,625 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 18:30:00,626 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-25 18:30:00,732 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 18:30:00,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 334 places, 374 transitions, 766 flow [2022-11-25 18:30:00,871 INFO L130 PetriNetUnfolder]: 75/627 cut-off events. [2022-11-25 18:30:00,871 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 18:30:00,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 641 conditions, 627 events. 75/627 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3139 event pairs, 0 based on Foata normal form. 0/519 useless extension candidates. Maximal degree in co-relation 382. Up to 12 conditions per place. [2022-11-25 18:30:00,884 INFO L82 GeneralOperation]: Start removeDead. Operand has 334 places, 374 transitions, 766 flow [2022-11-25 18:30:00,897 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 334 places, 374 transitions, 766 flow [2022-11-25 18:30:00,898 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:30:00,898 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 334 places, 374 transitions, 766 flow [2022-11-25 18:30:00,898 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 334 places, 374 transitions, 766 flow [2022-11-25 18:30:00,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 334 places, 374 transitions, 766 flow [2022-11-25 18:30:01,020 INFO L130 PetriNetUnfolder]: 75/627 cut-off events. [2022-11-25 18:30:01,020 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 18:30:01,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 641 conditions, 627 events. 75/627 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3139 event pairs, 0 based on Foata normal form. 0/519 useless extension candidates. Maximal degree in co-relation 382. Up to 12 conditions per place. [2022-11-25 18:30:01,069 INFO L119 LiptonReduction]: Number of co-enabled transitions 71688 [2022-11-25 18:30:12,541 INFO L134 LiptonReduction]: Checked pairs total: 598217 [2022-11-25 18:30:12,541 INFO L136 LiptonReduction]: Total number of compositions: 328 [2022-11-25 18:30:12,544 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:30:12,551 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;@3e19431d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:30:12,551 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-25 18:30:12,561 INFO L130 PetriNetUnfolder]: 25/96 cut-off events. [2022-11-25 18:30:12,561 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 18:30:12,562 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:30:12,562 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:30:12,562 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-25 18:30:12,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:30:12,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1110884553, now seen corresponding path program 1 times [2022-11-25 18:30:12,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:30:12,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563004537] [2022-11-25 18:30:12,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:30:12,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:30:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:30:12,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:30:12,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:30:12,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563004537] [2022-11-25 18:30:12,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563004537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:30:12,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:30:12,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:30:12,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320271046] [2022-11-25 18:30:12,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:30:12,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:30:12,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:30:12,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:30:12,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:30:12,659 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 702 [2022-11-25 18:30:12,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 194 transitions, 406 flow. Second operand has 3 states, 3 states have (on average 325.6666666666667) internal successors, (977), 3 states have internal predecessors, (977), 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) [2022-11-25 18:30:12,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:30:12,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 702 [2022-11-25 18:30:12,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:30:18,050 INFO L130 PetriNetUnfolder]: 14690/34890 cut-off events. [2022-11-25 18:30:18,050 INFO L131 PetriNetUnfolder]: For 211/262 co-relation queries the response was YES. [2022-11-25 18:30:18,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56263 conditions, 34890 events. 14690/34890 cut-off events. For 211/262 co-relation queries the response was YES. Maximal size of possible extension queue 882. Compared 376103 event pairs, 13600 based on Foata normal form. 3828/35521 useless extension candidates. Maximal degree in co-relation 26830. Up to 21259 conditions per place. [2022-11-25 18:30:18,315 INFO L137 encePairwiseOnDemand]: 667/702 looper letters, 62 selfloop transitions, 2 changer transitions 0/163 dead transitions. [2022-11-25 18:30:18,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 163 transitions, 472 flow [2022-11-25 18:30:18,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:30:18,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:30:18,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1069 transitions. [2022-11-25 18:30:18,319 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5075973409306742 [2022-11-25 18:30:18,320 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1069 transitions. [2022-11-25 18:30:18,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1069 transitions. [2022-11-25 18:30:18,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:30:18,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1069 transitions. [2022-11-25 18:30:18,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 356.3333333333333) internal successors, (1069), 3 states have internal predecessors, (1069), 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) [2022-11-25 18:30:18,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 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) [2022-11-25 18:30:18,329 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 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) [2022-11-25 18:30:18,329 INFO L175 Difference]: Start difference. First operand has 161 places, 194 transitions, 406 flow. Second operand 3 states and 1069 transitions. [2022-11-25 18:30:18,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 163 transitions, 472 flow [2022-11-25 18:30:18,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 163 transitions, 472 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 18:30:18,337 INFO L231 Difference]: Finished difference. Result has 164 places, 163 transitions, 354 flow [2022-11-25 18:30:18,338 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=354, PETRI_PLACES=164, PETRI_TRANSITIONS=163} [2022-11-25 18:30:18,340 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 3 predicate places. [2022-11-25 18:30:18,340 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 163 transitions, 354 flow [2022-11-25 18:30:18,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 325.6666666666667) internal successors, (977), 3 states have internal predecessors, (977), 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) [2022-11-25 18:30:18,341 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:30:18,341 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:30:18,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 18:30:18,342 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-25 18:30:18,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:30:18,343 INFO L85 PathProgramCache]: Analyzing trace with hash -2043970032, now seen corresponding path program 1 times [2022-11-25 18:30:18,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:30:18,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907135337] [2022-11-25 18:30:18,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:30:18,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:30:18,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:30:18,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:30:18,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:30:18,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907135337] [2022-11-25 18:30:18,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907135337] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:30:18,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798013533] [2022-11-25 18:30:18,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:30:18,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:30:18,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:30:18,431 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:30:18,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 18:30:18,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:30:18,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 18:30:18,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:30:18,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:30:18,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:30:18,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798013533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:30:18,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:30:18,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-25 18:30:18,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468636825] [2022-11-25 18:30:18,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:30:18,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:30:18,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:30:18,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:30:18,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:30:18,574 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 702 [2022-11-25 18:30:18,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 163 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 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) [2022-11-25 18:30:18,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:30:18,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 702 [2022-11-25 18:30:18,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:30:22,371 INFO L130 PetriNetUnfolder]: 14723/35136 cut-off events. [2022-11-25 18:30:22,371 INFO L131 PetriNetUnfolder]: For 175/190 co-relation queries the response was YES. [2022-11-25 18:30:22,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56499 conditions, 35136 events. 14723/35136 cut-off events. For 175/190 co-relation queries the response was YES. Maximal size of possible extension queue 900. Compared 380835 event pairs, 11915 based on Foata normal form. 0/31880 useless extension candidates. Maximal degree in co-relation 56486. Up to 21223 conditions per place. [2022-11-25 18:30:22,576 INFO L137 encePairwiseOnDemand]: 699/702 looper letters, 81 selfloop transitions, 2 changer transitions 0/182 dead transitions. [2022-11-25 18:30:22,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 182 transitions, 558 flow [2022-11-25 18:30:22,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:30:22,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:30:22,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1055 transitions. [2022-11-25 18:30:22,580 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5009496676163343 [2022-11-25 18:30:22,581 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1055 transitions. [2022-11-25 18:30:22,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1055 transitions. [2022-11-25 18:30:22,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:30:22,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1055 transitions. [2022-11-25 18:30:22,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 351.6666666666667) internal successors, (1055), 3 states have internal predecessors, (1055), 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) [2022-11-25 18:30:22,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 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) [2022-11-25 18:30:22,590 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 702.0) internal successors, (2808), 4 states have internal predecessors, (2808), 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) [2022-11-25 18:30:22,590 INFO L175 Difference]: Start difference. First operand has 164 places, 163 transitions, 354 flow. Second operand 3 states and 1055 transitions. [2022-11-25 18:30:22,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 182 transitions, 558 flow [2022-11-25 18:30:22,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 182 transitions, 554 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 18:30:22,603 INFO L231 Difference]: Finished difference. Result has 166 places, 164 transitions, 362 flow [2022-11-25 18:30:22,604 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=362, PETRI_PLACES=166, PETRI_TRANSITIONS=164} [2022-11-25 18:30:22,607 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 5 predicate places. [2022-11-25 18:30:22,607 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 164 transitions, 362 flow [2022-11-25 18:30:22,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 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) [2022-11-25 18:30:22,608 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:30:22,608 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-25 18:30:22,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 18:30:22,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:30:22,814 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-25 18:30:22,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:30:22,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1320185479, now seen corresponding path program 1 times [2022-11-25 18:30:22,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:30:22,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290138998] [2022-11-25 18:30:22,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:30:22,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:30:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:30:22,878 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 18:30:22,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:30:22,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290138998] [2022-11-25 18:30:22,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290138998] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:30:22,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82267521] [2022-11-25 18:30:22,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:30:22,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:30:22,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:30:22,881 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:30:22,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 18:30:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:30:22,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:30:22,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:30:23,013 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 18:30:23,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:30:23,041 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 18:30:23,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82267521] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:30:23,041 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:30:23,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-25 18:30:23,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656749366] [2022-11-25 18:30:23,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:30:23,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:30:23,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:30:23,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:30:23,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:30:23,068 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 702 [2022-11-25 18:30:23,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 164 transitions, 362 flow. Second operand has 7 states, 7 states have (on average 324.7142857142857) internal successors, (2273), 7 states have internal predecessors, (2273), 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) [2022-11-25 18:30:23,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:30:23,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 702 [2022-11-25 18:30:23,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:30:27,033 INFO L130 PetriNetUnfolder]: 14723/34988 cut-off events. [2022-11-25 18:30:27,033 INFO L131 PetriNetUnfolder]: For 870/885 co-relation queries the response was YES. [2022-11-25 18:30:27,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57059 conditions, 34988 events. 14723/34988 cut-off events. For 870/885 co-relation queries the response was YES. Maximal size of possible extension queue 896. Compared 378026 event pairs, 13600 based on Foata normal form. 3/32034 useless extension candidates. Maximal degree in co-relation 57031. Up to 21242 conditions per place. [2022-11-25 18:30:27,233 INFO L137 encePairwiseOnDemand]: 699/702 looper letters, 63 selfloop transitions, 5 changer transitions 0/167 dead transitions. [2022-11-25 18:30:27,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 167 transitions, 510 flow [2022-11-25 18:30:27,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:30:27,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:30:27,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2008 transitions. [2022-11-25 18:30:27,241 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47673314339981004 [2022-11-25 18:30:27,242 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2008 transitions. [2022-11-25 18:30:27,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2008 transitions. [2022-11-25 18:30:27,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:30:27,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2008 transitions. [2022-11-25 18:30:27,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 334.6666666666667) internal successors, (2008), 6 states have internal predecessors, (2008), 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) [2022-11-25 18:30:27,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 702.0) internal successors, (4914), 7 states have internal predecessors, (4914), 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) [2022-11-25 18:30:27,259 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 702.0) internal successors, (4914), 7 states have internal predecessors, (4914), 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) [2022-11-25 18:30:27,259 INFO L175 Difference]: Start difference. First operand has 166 places, 164 transitions, 362 flow. Second operand 6 states and 2008 transitions. [2022-11-25 18:30:27,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 167 transitions, 510 flow [2022-11-25 18:30:27,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 167 transitions, 508 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:30:27,264 INFO L231 Difference]: Finished difference. Result has 173 places, 167 transitions, 396 flow [2022-11-25 18:30:27,265 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=396, PETRI_PLACES=173, PETRI_TRANSITIONS=167} [2022-11-25 18:30:27,266 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 12 predicate places. [2022-11-25 18:30:27,267 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 167 transitions, 396 flow [2022-11-25 18:30:27,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 324.7142857142857) internal successors, (2273), 7 states have internal predecessors, (2273), 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) [2022-11-25 18:30:27,268 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:30:27,268 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1] [2022-11-25 18:30:27,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 18:30:27,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-25 18:30:27,477 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-25 18:30:27,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:30:27,477 INFO L85 PathProgramCache]: Analyzing trace with hash 179021028, now seen corresponding path program 2 times [2022-11-25 18:30:27,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:30:27,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259759851] [2022-11-25 18:30:27,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:30:27,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:30:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:30:27,595 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 18:30:27,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:30:27,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259759851] [2022-11-25 18:30:27,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259759851] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:30:27,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456355068] [2022-11-25 18:30:27,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:30:27,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:30:27,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:30:27,598 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:30:27,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 18:30:27,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:30:27,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:30:27,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 18:30:27,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:30:27,744 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 18:30:27,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:30:27,822 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 18:30:27,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456355068] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:30:27,825 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:30:27,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-25 18:30:27,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444736428] [2022-11-25 18:30:27,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:30:27,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 18:30:27,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:30:27,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 18:30:27,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-25 18:30:27,873 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 702 [2022-11-25 18:30:27,878 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 167 transitions, 396 flow. Second operand has 13 states, 13 states have (on average 324.38461538461536) internal successors, (4217), 13 states have internal predecessors, (4217), 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) [2022-11-25 18:30:27,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:30:27,879 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 702 [2022-11-25 18:30:27,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:30:32,002 INFO L130 PetriNetUnfolder]: 14723/34994 cut-off events. [2022-11-25 18:30:32,002 INFO L131 PetriNetUnfolder]: For 904/919 co-relation queries the response was YES. [2022-11-25 18:30:32,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57080 conditions, 34994 events. 14723/34994 cut-off events. For 904/919 co-relation queries the response was YES. Maximal size of possible extension queue 896. Compared 377878 event pairs, 13600 based on Foata normal form. 6/32043 useless extension candidates. Maximal degree in co-relation 57020. Up to 21242 conditions per place. [2022-11-25 18:30:32,186 INFO L137 encePairwiseOnDemand]: 699/702 looper letters, 63 selfloop transitions, 11 changer transitions 0/173 dead transitions. [2022-11-25 18:30:32,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 173 transitions, 580 flow [2022-11-25 18:30:32,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 18:30:32,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 18:30:32,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3955 transitions. [2022-11-25 18:30:32,200 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46949192782526117 [2022-11-25 18:30:32,200 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3955 transitions. [2022-11-25 18:30:32,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3955 transitions. [2022-11-25 18:30:32,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:30:32,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3955 transitions. [2022-11-25 18:30:32,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 329.5833333333333) internal successors, (3955), 12 states have internal predecessors, (3955), 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) [2022-11-25 18:30:32,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 702.0) internal successors, (9126), 13 states have internal predecessors, (9126), 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) [2022-11-25 18:30:32,233 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 702.0) internal successors, (9126), 13 states have internal predecessors, (9126), 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) [2022-11-25 18:30:32,233 INFO L175 Difference]: Start difference. First operand has 173 places, 167 transitions, 396 flow. Second operand 12 states and 3955 transitions. [2022-11-25 18:30:32,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 173 transitions, 580 flow [2022-11-25 18:30:32,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 173 transitions, 566 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-25 18:30:32,240 INFO L231 Difference]: Finished difference. Result has 189 places, 173 transitions, 466 flow [2022-11-25 18:30:32,240 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=702, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=466, PETRI_PLACES=189, PETRI_TRANSITIONS=173} [2022-11-25 18:30:32,241 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 28 predicate places. [2022-11-25 18:30:32,241 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 173 transitions, 466 flow [2022-11-25 18:30:32,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 324.38461538461536) internal successors, (4217), 13 states have internal predecessors, (4217), 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) [2022-11-25 18:30:32,243 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:30:32,244 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2022-11-25 18:30:32,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 18:30:32,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1323ff10-9149-4d69-8aae-f79324049d8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:30:32,452 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-25 18:30:32,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:30:32,453 INFO L85 PathProgramCache]: Analyzing trace with hash -43699708, now seen corresponding path program 3 times [2022-11-25 18:30:32,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:30:32,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979889271] [2022-11-25 18:30:32,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:30:32,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:30:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:30:32,489 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:30:32,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:30:32,541 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:30:32,543 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 18:30:32,544 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-11-25 18:30:32,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-11-25 18:30:32,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-11-25 18:30:32,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-11-25 18:30:32,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-11-25 18:30:32,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-11-25 18:30:32,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-11-25 18:30:32,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-11-25 18:30:32,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-11-25 18:30:32,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-11-25 18:30:32,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-11-25 18:30:32,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-11-25 18:30:32,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-11-25 18:30:32,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-11-25 18:30:32,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-11-25 18:30:32,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-11-25 18:30:32,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-11-25 18:30:32,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-11-25 18:30:32,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-11-25 18:30:32,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-11-25 18:30:32,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-11-25 18:30:32,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-11-25 18:30:32,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 18:30:32,552 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2022-11-25 18:30:32,552 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 18:30:32,553 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-25 18:30:32,618 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 18:30:32,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 427 places, 479 transitions, 988 flow [2022-11-25 18:30:32,833 INFO L130 PetriNetUnfolder]: 110/919 cut-off events. [2022-11-25 18:30:32,833 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-25 18:30:32,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 947 conditions, 919 events. 110/919 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5097 event pairs, 1 based on Foata normal form. 0/762 useless extension candidates. Maximal degree in co-relation 635. Up to 16 conditions per place. [2022-11-25 18:30:32,852 INFO L82 GeneralOperation]: Start removeDead. Operand has 427 places, 479 transitions, 988 flow [2022-11-25 18:30:32,862 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 427 places, 479 transitions, 988 flow [2022-11-25 18:30:32,862 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:30:32,863 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 427 places, 479 transitions, 988 flow [2022-11-25 18:30:32,863 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 427 places, 479 transitions, 988 flow [2022-11-25 18:30:32,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 427 places, 479 transitions, 988 flow [2022-11-25 18:30:33,144 INFO L130 PetriNetUnfolder]: 110/919 cut-off events. [2022-11-25 18:30:33,144 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-25 18:30:33,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 947 conditions, 919 events. 110/919 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5097 event pairs, 1 based on Foata normal form. 0/762 useless extension candidates. Maximal degree in co-relation 635. Up to 16 conditions per place. [2022-11-25 18:30:33,220 INFO L119 LiptonReduction]: Number of co-enabled transitions 140286 [2022-11-25 18:30:48,214 INFO L134 LiptonReduction]: Checked pairs total: 1185255 [2022-11-25 18:30:48,214 INFO L136 LiptonReduction]: Total number of compositions: 420 [2022-11-25 18:30:48,216 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:30:48,216 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;@3e19431d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:30:48,216 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-11-25 18:30:48,223 INFO L130 PetriNetUnfolder]: 22/81 cut-off events. [2022-11-25 18:30:48,223 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 18:30:48,223 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:30:48,223 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:30:48,223 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-25 18:30:48,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:30:48,224 INFO L85 PathProgramCache]: Analyzing trace with hash 939120414, now seen corresponding path program 1 times [2022-11-25 18:30:48,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:30:48,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865262039] [2022-11-25 18:30:48,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:30:48,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:30:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:30:48,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:30:48,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:30:48,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865262039] [2022-11-25 18:30:48,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865262039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:30:48,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:30:48,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:30:48,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975117617] [2022-11-25 18:30:48,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:30:48,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:30:48,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:30:48,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:30:48,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:30:48,285 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 899 [2022-11-25 18:30:48,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 252 transitions, 534 flow. Second operand has 3 states, 3 states have (on average 415.6666666666667) internal successors, (1247), 3 states have internal predecessors, (1247), 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) [2022-11-25 18:30:48,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:30:48,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 899 [2022-11-25 18:30:48,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand