./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 5e519f3a 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_dc1ee92c-13d0-4b41-928a-ba95bc495edd/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1ee92c-13d0-4b41-928a-ba95bc495edd/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1ee92c-13d0-4b41-928a-ba95bc495edd/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1ee92c-13d0-4b41-928a-ba95bc495edd/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1ee92c-13d0-4b41-928a-ba95bc495edd/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1ee92c-13d0-4b41-928a-ba95bc495edd/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:33:53,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:33:53,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:33:53,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:33:53,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:33:53,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:33:53,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:33:53,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:33:53,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:33:53,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:33:53,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:33:53,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:33:53,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:33:53,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:33:53,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:33:53,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:33:53,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:33:53,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:33:53,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:33:53,981 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:33:53,983 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:33:53,984 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:33:53,986 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:33:53,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:33:53,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:33:53,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:33:53,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:33:53,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:33:53,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:33:53,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:33:53,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:33:53,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:33:53,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:33:53,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:33:53,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:33:53,999 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:33:54,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:33:54,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:33:54,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:33:54,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:33:54,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:33:54,014 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1ee92c-13d0-4b41-928a-ba95bc495edd/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-02 20:33:54,045 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:33:54,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:33:54,046 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:33:54,046 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:33:54,047 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:33:54,047 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:33:54,048 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:33:54,048 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:33:54,048 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:33:54,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:33:54,049 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:33:54,049 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:33:54,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:33:54,050 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:33:54,050 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:33:54,050 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:33:54,050 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:33:54,050 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:33:54,051 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-02 20:33:54,051 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:33:54,051 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:33:54,051 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:33:54,051 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:33:54,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:33:54,052 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:33:54,052 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:33:54,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:33:54,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:33:54,053 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:33:54,053 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:33:54,053 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:33:54,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:33:54,054 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:33:54,054 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:33:54,054 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:33:54,054 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1ee92c-13d0-4b41-928a-ba95bc495edd/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1ee92c-13d0-4b41-928a-ba95bc495edd/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 [2022-11-02 20:33:54,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:33:54,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:33:54,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:33:54,360 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:33:54,361 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:33:54,362 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1ee92c-13d0-4b41-928a-ba95bc495edd/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i [2022-11-02 20:33:54,470 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1ee92c-13d0-4b41-928a-ba95bc495edd/bin/uautomizer-Dbtcem3rbc/data/a6a9ff76b/ad6ef62a510040979a352796ba52e69e/FLAGcdeb24573 [2022-11-02 20:33:55,086 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:33:55,087 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1ee92c-13d0-4b41-928a-ba95bc495edd/sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i [2022-11-02 20:33:55,100 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1ee92c-13d0-4b41-928a-ba95bc495edd/bin/uautomizer-Dbtcem3rbc/data/a6a9ff76b/ad6ef62a510040979a352796ba52e69e/FLAGcdeb24573 [2022-11-02 20:33:55,386 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1ee92c-13d0-4b41-928a-ba95bc495edd/bin/uautomizer-Dbtcem3rbc/data/a6a9ff76b/ad6ef62a510040979a352796ba52e69e [2022-11-02 20:33:55,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:33:55,392 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:33:55,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:33:55,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:33:55,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:33:55,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:33:55" (1/1) ... [2022-11-02 20:33:55,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fb1d796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:55, skipping insertion in model container [2022-11-02 20:33:55,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:33:55" (1/1) ... [2022-11-02 20:33:55,412 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:33:55,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:33:55,852 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1ee92c-13d0-4b41-928a-ba95bc495edd/sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i[30176,30189] [2022-11-02 20:33:55,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:33:55,888 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:33:55,920 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1ee92c-13d0-4b41-928a-ba95bc495edd/sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i[30176,30189] [2022-11-02 20:33:55,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:33:55,965 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:33:55,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:55 WrapperNode [2022-11-02 20:33:55,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:33:55,967 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:33:55,967 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:33:55,968 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:33:55,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:55" (1/1) ... [2022-11-02 20:33:56,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:55" (1/1) ... [2022-11-02 20:33:56,051 INFO L138 Inliner]: procedures = 170, calls = 34, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 176 [2022-11-02 20:33:56,052 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:33:56,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:33:56,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:33:56,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:33:56,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:55" (1/1) ... [2022-11-02 20:33:56,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:55" (1/1) ... [2022-11-02 20:33:56,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:55" (1/1) ... [2022-11-02 20:33:56,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:55" (1/1) ... [2022-11-02 20:33:56,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:55" (1/1) ... [2022-11-02 20:33:56,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:55" (1/1) ... [2022-11-02 20:33:56,082 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:55" (1/1) ... [2022-11-02 20:33:56,084 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:55" (1/1) ... [2022-11-02 20:33:56,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:33:56,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:33:56,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:33:56,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:33:56,089 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:55" (1/1) ... [2022-11-02 20:33:56,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:33:56,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1ee92c-13d0-4b41-928a-ba95bc495edd/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:33:56,122 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1ee92c-13d0-4b41-928a-ba95bc495edd/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:33:56,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1ee92c-13d0-4b41-928a-ba95bc495edd/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:33:56,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:33:56,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:33:56,181 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 20:33:56,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:33:56,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:33:56,183 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-02 20:33:56,184 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-02 20:33:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:33:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:33:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:33:56,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:33:56,187 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:33:56,331 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:33:56,333 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:33:56,728 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:33:56,751 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:33:56,752 INFO L300 CfgBuilder]: Removed 18 assume(true) statements. [2022-11-02 20:33:56,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:33:56 BoogieIcfgContainer [2022-11-02 20:33:56,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:33:56,757 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:33:56,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:33:56,761 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:33:56,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:33:55" (1/3) ... [2022-11-02 20:33:56,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8d78a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:33:56, skipping insertion in model container [2022-11-02 20:33:56,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:55" (2/3) ... [2022-11-02 20:33:56,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8d78a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:33:56, skipping insertion in model container [2022-11-02 20:33:56,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:33:56" (3/3) ... [2022-11-02 20:33:56,764 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_60-invariant_racefree.i [2022-11-02 20:33:56,774 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:33:56,786 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:33:56,786 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-02 20:33:56,786 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:33:56,880 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-02 20:33:56,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 191 transitions, 390 flow [2022-11-02 20:33:57,053 INFO L130 PetriNetUnfolder]: 33/273 cut-off events. [2022-11-02 20:33:57,053 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 20:33:57,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 273 events. 33/273 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1142 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 155. Up to 6 conditions per place. [2022-11-02 20:33:57,065 INFO L82 GeneralOperation]: Start removeDead. Operand has 172 places, 191 transitions, 390 flow [2022-11-02 20:33:57,073 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 172 places, 191 transitions, 390 flow [2022-11-02 20:33:57,085 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:33:57,092 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;@6242a3b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:33:57,093 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-02 20:33:57,109 INFO L130 PetriNetUnfolder]: 4/62 cut-off events. [2022-11-02 20:33:57,109 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:33:57,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:33:57,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:57,111 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-11-02 20:33:57,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:57,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1061519090, now seen corresponding path program 1 times [2022-11-02 20:33:57,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:33:57,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147626305] [2022-11-02 20:33:57,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:57,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:33:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:57,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:57,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:33:57,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147626305] [2022-11-02 20:33:57,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147626305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:57,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:57,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:33:57,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155418344] [2022-11-02 20:33:57,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:57,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:33:57,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:33:57,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:33:57,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:33:57,636 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 191 [2022-11-02 20:33:57,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 191 transitions, 390 flow. Second operand has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:57,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:33:57,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 191 [2022-11-02 20:33:57,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:33:57,778 INFO L130 PetriNetUnfolder]: 1/188 cut-off events. [2022-11-02 20:33:57,778 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 20:33:57,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 188 events. 1/188 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 245 event pairs, 0 based on Foata normal form. 34/203 useless extension candidates. Maximal degree in co-relation 138. Up to 7 conditions per place. [2022-11-02 20:33:57,785 INFO L137 encePairwiseOnDemand]: 168/191 looper letters, 9 selfloop transitions, 2 changer transitions 0/171 dead transitions. [2022-11-02 20:33:57,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 171 transitions, 372 flow [2022-11-02 20:33:57,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:33:57,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:33:57,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 522 transitions. [2022-11-02 20:33:57,809 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9109947643979057 [2022-11-02 20:33:57,810 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 522 transitions. [2022-11-02 20:33:57,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 522 transitions. [2022-11-02 20:33:57,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:33:57,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 522 transitions. [2022-11-02 20:33:57,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:57,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:57,834 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:57,836 INFO L175 Difference]: Start difference. First operand has 172 places, 191 transitions, 390 flow. Second operand 3 states and 522 transitions. [2022-11-02 20:33:57,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 171 transitions, 372 flow [2022-11-02 20:33:57,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 171 transitions, 372 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:33:57,846 INFO L231 Difference]: Finished difference. Result has 173 places, 169 transitions, 354 flow [2022-11-02 20:33:57,849 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=354, PETRI_PLACES=173, PETRI_TRANSITIONS=169} [2022-11-02 20:33:57,853 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 1 predicate places. [2022-11-02 20:33:57,854 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 169 transitions, 354 flow [2022-11-02 20:33:57,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:57,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:33:57,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:57,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:33:57,856 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-11-02 20:33:57,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:57,859 INFO L85 PathProgramCache]: Analyzing trace with hash -625843708, now seen corresponding path program 1 times [2022-11-02 20:33:57,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:33:57,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824390391] [2022-11-02 20:33:57,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:57,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:33:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:58,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:58,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:33:58,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824390391] [2022-11-02 20:33:58,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824390391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:58,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:58,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:33:58,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905483033] [2022-11-02 20:33:58,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:58,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:33:58,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:33:58,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:33:58,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:33:58,026 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 191 [2022-11-02 20:33:58,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 169 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:58,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:33:58,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 191 [2022-11-02 20:33:58,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:33:58,447 INFO L130 PetriNetUnfolder]: 276/1850 cut-off events. [2022-11-02 20:33:58,448 INFO L131 PetriNetUnfolder]: For 14/17 co-relation queries the response was YES. [2022-11-02 20:33:58,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2486 conditions, 1850 events. 276/1850 cut-off events. For 14/17 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 13662 event pairs, 104 based on Foata normal form. 1/1607 useless extension candidates. Maximal degree in co-relation 2437. Up to 350 conditions per place. [2022-11-02 20:33:58,464 INFO L137 encePairwiseOnDemand]: 166/191 looper letters, 44 selfloop transitions, 18 changer transitions 0/196 dead transitions. [2022-11-02 20:33:58,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 196 transitions, 535 flow [2022-11-02 20:33:58,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:33:58,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:33:58,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 471 transitions. [2022-11-02 20:33:58,469 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8219895287958116 [2022-11-02 20:33:58,470 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 471 transitions. [2022-11-02 20:33:58,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 471 transitions. [2022-11-02 20:33:58,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:33:58,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 471 transitions. [2022-11-02 20:33:58,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:58,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:58,479 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:58,479 INFO L175 Difference]: Start difference. First operand has 173 places, 169 transitions, 354 flow. Second operand 3 states and 471 transitions. [2022-11-02 20:33:58,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 196 transitions, 535 flow [2022-11-02 20:33:58,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 196 transitions, 531 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:33:58,492 INFO L231 Difference]: Finished difference. Result has 175 places, 187 transitions, 508 flow [2022-11-02 20:33:58,492 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=508, PETRI_PLACES=175, PETRI_TRANSITIONS=187} [2022-11-02 20:33:58,493 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 3 predicate places. [2022-11-02 20:33:58,494 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 187 transitions, 508 flow [2022-11-02 20:33:58,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:58,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:33:58,496 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:58,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:33:58,497 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-11-02 20:33:58,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:58,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1133041469, now seen corresponding path program 1 times [2022-11-02 20:33:58,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:33:58,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414809042] [2022-11-02 20:33:58,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:58,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:33:58,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:33:58,568 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:33:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:33:58,650 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:33:58,650 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:33:58,651 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-11-02 20:33:58,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2022-11-02 20:33:58,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2022-11-02 20:33:58,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2022-11-02 20:33:58,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2022-11-02 20:33:58,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2022-11-02 20:33:58,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2022-11-02 20:33:58,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2022-11-02 20:33:58,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2022-11-02 20:33:58,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2022-11-02 20:33:58,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2022-11-02 20:33:58,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2022-11-02 20:33:58,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2022-11-02 20:33:58,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2022-11-02 20:33:58,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2022-11-02 20:33:58,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2022-11-02 20:33:58,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2022-11-02 20:33:58,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2022-11-02 20:33:58,669 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2022-11-02 20:33:58,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:33:58,670 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-02 20:33:58,674 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:33:58,674 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-02 20:33:58,737 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 20:33:58,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 261 transitions, 540 flow [2022-11-02 20:33:58,848 INFO L130 PetriNetUnfolder]: 57/456 cut-off events. [2022-11-02 20:33:58,848 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-02 20:33:58,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470 conditions, 456 events. 57/456 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2146 event pairs, 0 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 275. Up to 9 conditions per place. [2022-11-02 20:33:58,855 INFO L82 GeneralOperation]: Start removeDead. Operand has 233 places, 261 transitions, 540 flow [2022-11-02 20:33:58,864 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 233 places, 261 transitions, 540 flow [2022-11-02 20:33:58,866 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:33:58,867 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;@6242a3b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:33:58,868 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-02 20:33:58,876 INFO L130 PetriNetUnfolder]: 4/65 cut-off events. [2022-11-02 20:33:58,876 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:33:58,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:33:58,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:58,877 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-02 20:33:58,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:58,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1956794913, now seen corresponding path program 1 times [2022-11-02 20:33:58,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:33:58,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362271861] [2022-11-02 20:33:58,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:58,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:33:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:58,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:58,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:33:58,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362271861] [2022-11-02 20:33:58,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362271861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:58,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:58,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:33:58,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772922671] [2022-11-02 20:33:58,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:58,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:33:58,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:33:58,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:33:58,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:33:58,962 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 261 [2022-11-02 20:33:58,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 261 transitions, 540 flow. Second operand has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:58,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:33:58,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 261 [2022-11-02 20:33:58,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:33:59,075 INFO L130 PetriNetUnfolder]: 4/348 cut-off events. [2022-11-02 20:33:59,076 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-11-02 20:33:59,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 348 events. 4/348 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1004 event pairs, 0 based on Foata normal form. 95/405 useless extension candidates. Maximal degree in co-relation 233. Up to 16 conditions per place. [2022-11-02 20:33:59,083 INFO L137 encePairwiseOnDemand]: 229/261 looper letters, 13 selfloop transitions, 2 changer transitions 0/233 dead transitions. [2022-11-02 20:33:59,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 233 transitions, 514 flow [2022-11-02 20:33:59,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:33:59,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:33:59,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 709 transitions. [2022-11-02 20:33:59,086 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9054916985951469 [2022-11-02 20:33:59,086 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 709 transitions. [2022-11-02 20:33:59,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 709 transitions. [2022-11-02 20:33:59,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:33:59,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 709 transitions. [2022-11-02 20:33:59,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 236.33333333333334) internal successors, (709), 3 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:59,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:59,092 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:59,093 INFO L175 Difference]: Start difference. First operand has 233 places, 261 transitions, 540 flow. Second operand 3 states and 709 transitions. [2022-11-02 20:33:59,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 233 transitions, 514 flow [2022-11-02 20:33:59,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 233 transitions, 514 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:33:59,100 INFO L231 Difference]: Finished difference. Result has 233 places, 230 transitions, 488 flow [2022-11-02 20:33:59,100 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=488, PETRI_PLACES=233, PETRI_TRANSITIONS=230} [2022-11-02 20:33:59,101 INFO L287 CegarLoopForPetriNet]: 233 programPoint places, 0 predicate places. [2022-11-02 20:33:59,102 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 230 transitions, 488 flow [2022-11-02 20:33:59,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:59,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:33:59,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:59,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:33:59,103 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-02 20:33:59,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:59,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1425197723, now seen corresponding path program 1 times [2022-11-02 20:33:59,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:33:59,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055890560] [2022-11-02 20:33:59,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:59,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:33:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:59,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:59,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:33:59,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055890560] [2022-11-02 20:33:59,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055890560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:59,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:59,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:33:59,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672080336] [2022-11-02 20:33:59,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:59,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:33:59,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:33:59,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:33:59,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:33:59,161 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 261 [2022-11-02 20:33:59,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 230 transitions, 488 flow. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:59,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:33:59,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 261 [2022-11-02 20:33:59,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:34:07,023 INFO L130 PetriNetUnfolder]: 13610/51320 cut-off events. [2022-11-02 20:34:07,024 INFO L131 PetriNetUnfolder]: For 562/695 co-relation queries the response was YES. [2022-11-02 20:34:07,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73700 conditions, 51320 events. 13610/51320 cut-off events. For 562/695 co-relation queries the response was YES. Maximal size of possible extension queue 1129. Compared 692082 event pairs, 5528 based on Foata normal form. 28/43067 useless extension candidates. Maximal degree in co-relation 73650. Up to 13130 conditions per place. [2022-11-02 20:34:07,414 INFO L137 encePairwiseOnDemand]: 222/261 looper letters, 70 selfloop transitions, 28 changer transitions 0/273 dead transitions. [2022-11-02 20:34:07,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 273 transitions, 781 flow [2022-11-02 20:34:07,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:34:07,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:34:07,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 631 transitions. [2022-11-02 20:34:07,419 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8058748403575989 [2022-11-02 20:34:07,420 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 631 transitions. [2022-11-02 20:34:07,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 631 transitions. [2022-11-02 20:34:07,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:34:07,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 631 transitions. [2022-11-02 20:34:07,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:07,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:07,427 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:07,428 INFO L175 Difference]: Start difference. First operand has 233 places, 230 transitions, 488 flow. Second operand 3 states and 631 transitions. [2022-11-02 20:34:07,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 273 transitions, 781 flow [2022-11-02 20:34:07,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 273 transitions, 779 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:34:07,443 INFO L231 Difference]: Finished difference. Result has 236 places, 258 transitions, 732 flow [2022-11-02 20:34:07,444 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=732, PETRI_PLACES=236, PETRI_TRANSITIONS=258} [2022-11-02 20:34:07,446 INFO L287 CegarLoopForPetriNet]: 233 programPoint places, 3 predicate places. [2022-11-02 20:34:07,447 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 258 transitions, 732 flow [2022-11-02 20:34:07,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:07,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:34:07,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:07,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:34:07,448 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-02 20:34:07,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:07,449 INFO L85 PathProgramCache]: Analyzing trace with hash 961508220, now seen corresponding path program 1 times [2022-11-02 20:34:07,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:07,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123506724] [2022-11-02 20:34:07,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:07,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:07,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:07,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:07,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123506724] [2022-11-02 20:34:07,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123506724] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:07,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:07,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:34:07,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570228583] [2022-11-02 20:34:07,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:07,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:34:07,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:07,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:34:07,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:34:07,566 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 261 [2022-11-02 20:34:07,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 258 transitions, 732 flow. Second operand has 3 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:07,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:34:07,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 261 [2022-11-02 20:34:07,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:34:13,859 INFO L130 PetriNetUnfolder]: 8071/43877 cut-off events. [2022-11-02 20:34:13,859 INFO L131 PetriNetUnfolder]: For 4259/4468 co-relation queries the response was YES. [2022-11-02 20:34:14,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65614 conditions, 43877 events. 8071/43877 cut-off events. For 4259/4468 co-relation queries the response was YES. Maximal size of possible extension queue 1047. Compared 643676 event pairs, 3561 based on Foata normal form. 0/39322 useless extension candidates. Maximal degree in co-relation 63278. Up to 8022 conditions per place. [2022-11-02 20:34:14,163 INFO L137 encePairwiseOnDemand]: 250/261 looper letters, 32 selfloop transitions, 9 changer transitions 0/273 dead transitions. [2022-11-02 20:34:14,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 273 transitions, 844 flow [2022-11-02 20:34:14,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:34:14,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:34:14,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 658 transitions. [2022-11-02 20:34:14,169 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8403575989782887 [2022-11-02 20:34:14,169 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 658 transitions. [2022-11-02 20:34:14,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 658 transitions. [2022-11-02 20:34:14,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:34:14,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 658 transitions. [2022-11-02 20:34:14,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:14,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:14,175 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:14,175 INFO L175 Difference]: Start difference. First operand has 236 places, 258 transitions, 732 flow. Second operand 3 states and 658 transitions. [2022-11-02 20:34:14,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 273 transitions, 844 flow [2022-11-02 20:34:14,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 273 transitions, 790 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:34:14,240 INFO L231 Difference]: Finished difference. Result has 237 places, 263 transitions, 736 flow [2022-11-02 20:34:14,241 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=668, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=736, PETRI_PLACES=237, PETRI_TRANSITIONS=263} [2022-11-02 20:34:14,244 INFO L287 CegarLoopForPetriNet]: 233 programPoint places, 4 predicate places. [2022-11-02 20:34:14,245 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 263 transitions, 736 flow [2022-11-02 20:34:14,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:14,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:34:14,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:14,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:34:14,246 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-02 20:34:14,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:14,247 INFO L85 PathProgramCache]: Analyzing trace with hash 834599006, now seen corresponding path program 1 times [2022-11-02 20:34:14,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:14,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45257832] [2022-11-02 20:34:14,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:14,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:14,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:14,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:14,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45257832] [2022-11-02 20:34:14,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45257832] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:14,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442492661] [2022-11-02 20:34:14,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:14,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:34:14,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1ee92c-13d0-4b41-928a-ba95bc495edd/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:34:14,393 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1ee92c-13d0-4b41-928a-ba95bc495edd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:34:14,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1ee92c-13d0-4b41-928a-ba95bc495edd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:34:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:14,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:34:14,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:14,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:34:14,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:34:14,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442492661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:14,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:34:14,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-02 20:34:14,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549896351] [2022-11-02 20:34:14,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:14,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:34:14,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:14,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:34:14,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:34:14,537 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 261 [2022-11-02 20:34:14,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 263 transitions, 736 flow. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:14,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:34:14,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 261 [2022-11-02 20:34:14,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:34:24,777 INFO L130 PetriNetUnfolder]: 21245/78146 cut-off events. [2022-11-02 20:34:24,777 INFO L131 PetriNetUnfolder]: For 12914/18001 co-relation queries the response was YES. [2022-11-02 20:34:25,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138138 conditions, 78146 events. 21245/78146 cut-off events. For 12914/18001 co-relation queries the response was YES. Maximal size of possible extension queue 1746. Compared 1116430 event pairs, 9639 based on Foata normal form. 174/67292 useless extension candidates. Maximal degree in co-relation 134371. Up to 30235 conditions per place. [2022-11-02 20:34:25,596 INFO L137 encePairwiseOnDemand]: 245/261 looper letters, 114 selfloop transitions, 28 changer transitions 0/321 dead transitions. [2022-11-02 20:34:25,596 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 321 transitions, 1232 flow [2022-11-02 20:34:25,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:34:25,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:34:25,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 609 transitions. [2022-11-02 20:34:25,599 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2022-11-02 20:34:25,599 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 609 transitions. [2022-11-02 20:34:25,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 609 transitions. [2022-11-02 20:34:25,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:34:25,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 609 transitions. [2022-11-02 20:34:25,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:25,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:25,605 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:25,605 INFO L175 Difference]: Start difference. First operand has 237 places, 263 transitions, 736 flow. Second operand 3 states and 609 transitions. [2022-11-02 20:34:25,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 321 transitions, 1232 flow [2022-11-02 20:34:25,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 321 transitions, 1214 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:34:25,677 INFO L231 Difference]: Finished difference. Result has 239 places, 289 transitions, 984 flow [2022-11-02 20:34:25,678 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=984, PETRI_PLACES=239, PETRI_TRANSITIONS=289} [2022-11-02 20:34:25,679 INFO L287 CegarLoopForPetriNet]: 233 programPoint places, 6 predicate places. [2022-11-02 20:34:25,679 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 289 transitions, 984 flow [2022-11-02 20:34:25,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:25,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:34:25,680 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:25,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1ee92c-13d0-4b41-928a-ba95bc495edd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:25,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1ee92c-13d0-4b41-928a-ba95bc495edd/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:34:25,895 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-02 20:34:25,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:25,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1343594464, now seen corresponding path program 1 times [2022-11-02 20:34:25,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:25,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768694206] [2022-11-02 20:34:25,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:25,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:25,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:34:25,926 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:34:25,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:34:25,953 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:34:25,953 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:34:25,954 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-11-02 20:34:25,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2022-11-02 20:34:25,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2022-11-02 20:34:25,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2022-11-02 20:34:25,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2022-11-02 20:34:25,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2022-11-02 20:34:25,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2022-11-02 20:34:25,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2022-11-02 20:34:25,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2022-11-02 20:34:25,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2022-11-02 20:34:25,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2022-11-02 20:34:25,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2022-11-02 20:34:25,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2022-11-02 20:34:25,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2022-11-02 20:34:25,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2022-11-02 20:34:25,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2022-11-02 20:34:25,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2022-11-02 20:34:25,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2022-11-02 20:34:25,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2022-11-02 20:34:25,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2022-11-02 20:34:25,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2022-11-02 20:34:25,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2022-11-02 20:34:25,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2022-11-02 20:34:25,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2022-11-02 20:34:25,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2022-11-02 20:34:25,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:34:25,969 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-02 20:34:25,972 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:34:25,972 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-02 20:34:26,038 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-02 20:34:26,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 331 transitions, 692 flow [2022-11-02 20:34:26,171 INFO L130 PetriNetUnfolder]: 86/684 cut-off events. [2022-11-02 20:34:26,171 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-02 20:34:26,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 712 conditions, 684 events. 86/684 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3347 event pairs, 1 based on Foata normal form. 0/548 useless extension candidates. Maximal degree in co-relation 464. Up to 16 conditions per place. [2022-11-02 20:34:26,184 INFO L82 GeneralOperation]: Start removeDead. Operand has 294 places, 331 transitions, 692 flow [2022-11-02 20:34:26,195 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 294 places, 331 transitions, 692 flow [2022-11-02 20:34:26,197 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:34:26,197 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;@6242a3b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:34:26,197 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-02 20:34:26,202 INFO L130 PetriNetUnfolder]: 4/61 cut-off events. [2022-11-02 20:34:26,202 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:34:26,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:34:26,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:26,203 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-02 20:34:26,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:26,203 INFO L85 PathProgramCache]: Analyzing trace with hash -811766323, now seen corresponding path program 1 times [2022-11-02 20:34:26,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:26,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124592575] [2022-11-02 20:34:26,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:26,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:26,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:26,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:26,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:26,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124592575] [2022-11-02 20:34:26,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124592575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:26,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:26,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:34:26,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748861127] [2022-11-02 20:34:26,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:26,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:34:26,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:26,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:34:26,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:34:26,239 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 331 [2022-11-02 20:34:26,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 331 transitions, 692 flow. Second operand has 2 states, 2 states have (on average 284.0) internal successors, (568), 2 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:26,243 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:34:26,243 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 331 [2022-11-02 20:34:26,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:34:26,378 INFO L130 PetriNetUnfolder]: 11/602 cut-off events. [2022-11-02 20:34:26,378 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-11-02 20:34:26,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 646 conditions, 602 events. 11/602 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2500 event pairs, 1 based on Foata normal form. 167/701 useless extension candidates. Maximal degree in co-relation 413. Up to 16 conditions per place. [2022-11-02 20:34:26,391 INFO L137 encePairwiseOnDemand]: 293/331 looper letters, 6 selfloop transitions, 0 changer transitions 0/289 dead transitions. [2022-11-02 20:34:26,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 289 transitions, 620 flow [2022-11-02 20:34:26,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:34:26,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:34:26,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 610 transitions. [2022-11-02 20:34:26,395 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9214501510574018 [2022-11-02 20:34:26,395 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 610 transitions. [2022-11-02 20:34:26,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 610 transitions. [2022-11-02 20:34:26,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:34:26,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 610 transitions. [2022-11-02 20:34:26,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 305.0) internal successors, (610), 2 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:26,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 331.0) internal successors, (993), 3 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:26,401 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 331.0) internal successors, (993), 3 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:26,401 INFO L175 Difference]: Start difference. First operand has 294 places, 331 transitions, 692 flow. Second operand 2 states and 610 transitions. [2022-11-02 20:34:26,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 289 transitions, 620 flow [2022-11-02 20:34:26,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 289 transitions, 620 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:34:26,409 INFO L231 Difference]: Finished difference. Result has 291 places, 289 transitions, 608 flow [2022-11-02 20:34:26,410 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=608, PETRI_PLACES=291, PETRI_TRANSITIONS=289} [2022-11-02 20:34:26,411 INFO L287 CegarLoopForPetriNet]: 294 programPoint places, -3 predicate places. [2022-11-02 20:34:26,412 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 289 transitions, 608 flow [2022-11-02 20:34:26,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 284.0) internal successors, (568), 2 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:26,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:34:26,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:26,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:34:26,413 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-02 20:34:26,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:26,414 INFO L85 PathProgramCache]: Analyzing trace with hash 926764354, now seen corresponding path program 1 times [2022-11-02 20:34:26,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:26,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967255213] [2022-11-02 20:34:26,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:26,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:26,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:26,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:26,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:26,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967255213] [2022-11-02 20:34:26,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967255213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:26,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:26,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:34:26,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667802252] [2022-11-02 20:34:26,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:26,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:34:26,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:26,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:34:26,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:34:26,466 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 331 [2022-11-02 20:34:26,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 289 transitions, 608 flow. Second operand has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:26,468 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:34:26,468 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 331 [2022-11-02 20:34:26,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:34:26,609 INFO L130 PetriNetUnfolder]: 10/551 cut-off events. [2022-11-02 20:34:26,610 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2022-11-02 20:34:26,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 615 conditions, 551 events. 10/551 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2123 event pairs, 1 based on Foata normal form. 0/490 useless extension candidates. Maximal degree in co-relation 609. Up to 30 conditions per place. [2022-11-02 20:34:26,622 INFO L137 encePairwiseOnDemand]: 328/331 looper letters, 15 selfloop transitions, 2 changer transitions 0/293 dead transitions. [2022-11-02 20:34:26,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 293 transitions, 650 flow [2022-11-02 20:34:26,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:34:26,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:34:26,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 846 transitions. [2022-11-02 20:34:26,625 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.851963746223565 [2022-11-02 20:34:26,625 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 846 transitions. [2022-11-02 20:34:26,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 846 transitions. [2022-11-02 20:34:26,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:34:26,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 846 transitions. [2022-11-02 20:34:26,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 282.0) internal successors, (846), 3 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:26,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:26,631 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:26,631 INFO L175 Difference]: Start difference. First operand has 291 places, 289 transitions, 608 flow. Second operand 3 states and 846 transitions. [2022-11-02 20:34:26,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 293 transitions, 650 flow [2022-11-02 20:34:26,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 293 transitions, 650 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:34:26,638 INFO L231 Difference]: Finished difference. Result has 294 places, 290 transitions, 620 flow [2022-11-02 20:34:26,639 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=620, PETRI_PLACES=294, PETRI_TRANSITIONS=290} [2022-11-02 20:34:26,639 INFO L287 CegarLoopForPetriNet]: 294 programPoint places, 0 predicate places. [2022-11-02 20:34:26,639 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 290 transitions, 620 flow [2022-11-02 20:34:26,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:26,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:34:26,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:26,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:34:26,641 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-02 20:34:26,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:26,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1547724460, now seen corresponding path program 1 times [2022-11-02 20:34:26,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:26,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221944065] [2022-11-02 20:34:26,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:26,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:26,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:26,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:26,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221944065] [2022-11-02 20:34:26,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221944065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:26,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:26,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:34:26,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423372493] [2022-11-02 20:34:26,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:26,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:34:26,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:26,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:34:26,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:34:26,678 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 331 [2022-11-02 20:34:26,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 290 transitions, 620 flow. Second operand has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:26,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:34:26,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 331 [2022-11-02 20:34:26,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand