./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e04fb08f 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_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:39:05,812 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:39:05,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:39:05,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:39:05,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:39:05,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:39:05,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:39:05,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:39:05,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:39:05,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:39:05,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:39:05,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:39:05,877 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:39:05,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:39:05,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:39:05,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:39:05,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:39:05,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:39:05,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:39:05,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:39:05,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:39:05,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:39:05,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:39:05,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:39:05,918 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:39:05,925 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:39:05,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:39:05,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:39:05,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:39:05,928 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:39:05,929 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:39:05,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:39:05,933 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:39:05,935 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:39:05,936 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:39:05,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:39:05,938 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:39:05,938 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:39:05,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:39:05,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:39:05,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:39:05,941 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-16 12:39:06,005 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:39:06,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:39:06,007 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:39:06,008 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:39:06,009 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:39:06,012 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:39:06,013 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:39:06,013 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:39:06,014 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:39:06,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:39:06,014 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:39:06,015 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:39:06,015 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:39:06,015 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:39:06,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:39:06,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:39:06,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:39:06,017 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:39:06,018 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-16 12:39:06,018 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:39:06,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:39:06,018 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:39:06,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:39:06,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:39:06,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:39:06,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:39:06,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:39:06,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:39:06,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:39:06,021 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:39:06,021 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:39:06,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:39:06,022 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:39:06,022 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:39:06,023 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:39:06,023 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_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df [2022-11-16 12:39:06,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:39:06,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:39:06,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:39:06,354 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:39:06,355 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:39:06,357 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2022-11-16 12:39:06,439 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/data/41d8cf586/052e8a1c52dd4e71a8ce10e9c2efb6e4/FLAGd400a120e [2022-11-16 12:39:07,042 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:39:07,055 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2022-11-16 12:39:07,078 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/data/41d8cf586/052e8a1c52dd4e71a8ce10e9c2efb6e4/FLAGd400a120e [2022-11-16 12:39:07,276 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/data/41d8cf586/052e8a1c52dd4e71a8ce10e9c2efb6e4 [2022-11-16 12:39:07,279 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:39:07,280 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:39:07,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:39:07,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:39:07,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:39:07,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:39:07" (1/1) ... [2022-11-16 12:39:07,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40e8d336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:07, skipping insertion in model container [2022-11-16 12:39:07,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:39:07" (1/1) ... [2022-11-16 12:39:07,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:39:07,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:39:08,012 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i[41323,41336] [2022-11-16 12:39:08,079 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:39:08,108 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:39:08,170 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i[41323,41336] [2022-11-16 12:39:08,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:39:08,268 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:39:08,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:08 WrapperNode [2022-11-16 12:39:08,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:39:08,270 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:39:08,270 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:39:08,271 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:39:08,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:08" (1/1) ... [2022-11-16 12:39:08,330 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:08" (1/1) ... [2022-11-16 12:39:08,388 INFO L138 Inliner]: procedures = 270, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 249 [2022-11-16 12:39:08,391 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:39:08,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:39:08,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:39:08,394 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:39:08,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:08" (1/1) ... [2022-11-16 12:39:08,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:08" (1/1) ... [2022-11-16 12:39:08,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:08" (1/1) ... [2022-11-16 12:39:08,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:08" (1/1) ... [2022-11-16 12:39:08,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:08" (1/1) ... [2022-11-16 12:39:08,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:08" (1/1) ... [2022-11-16 12:39:08,482 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:08" (1/1) ... [2022-11-16 12:39:08,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:08" (1/1) ... [2022-11-16 12:39:08,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:39:08,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:39:08,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:39:08,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:39:08,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:08" (1/1) ... [2022-11-16 12:39:08,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:39:08,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:39:08,536 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:39:08,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:39:08,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:39:08,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:39:08,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:39:08,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:39:08,572 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 12:39:08,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:39:08,573 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 12:39:08,573 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 12:39:08,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:39:08,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:39:08,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:39:08,576 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:39:08,717 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:39:08,719 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:39:09,490 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:39:09,501 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:39:09,502 INFO L300 CfgBuilder]: Removed 23 assume(true) statements. [2022-11-16 12:39:09,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:39:09 BoogieIcfgContainer [2022-11-16 12:39:09,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:39:09,515 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:39:09,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:39:09,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:39:09,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:39:07" (1/3) ... [2022-11-16 12:39:09,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52f03964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:39:09, skipping insertion in model container [2022-11-16 12:39:09,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:08" (2/3) ... [2022-11-16 12:39:09,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52f03964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:39:09, skipping insertion in model container [2022-11-16 12:39:09,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:39:09" (3/3) ... [2022-11-16 12:39:09,525 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_75-tricky_address2_racefree.i [2022-11-16 12:39:09,541 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:39:09,553 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:39:09,553 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-11-16 12:39:09,554 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:39:09,724 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-16 12:39:09,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 269 transitions, 546 flow [2022-11-16 12:39:09,939 INFO L130 PetriNetUnfolder]: 45/380 cut-off events. [2022-11-16 12:39:09,940 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 12:39:09,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386 conditions, 380 events. 45/380 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1550 event pairs, 0 based on Foata normal form. 0/315 useless extension candidates. Maximal degree in co-relation 219. Up to 8 conditions per place. [2022-11-16 12:39:09,950 INFO L82 GeneralOperation]: Start removeDead. Operand has 241 places, 269 transitions, 546 flow [2022-11-16 12:39:09,960 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 241 places, 269 transitions, 546 flow [2022-11-16 12:39:09,972 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:39:09,979 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;@2f878f37, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:39:09,980 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-16 12:39:10,002 INFO L130 PetriNetUnfolder]: 11/115 cut-off events. [2022-11-16 12:39:10,002 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:39:10,002 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:39:10,003 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:10,004 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-16 12:39:10,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:10,010 INFO L85 PathProgramCache]: Analyzing trace with hash -518286930, now seen corresponding path program 1 times [2022-11-16 12:39:10,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:10,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331533199] [2022-11-16 12:39:10,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:10,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:10,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:10,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:10,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331533199] [2022-11-16 12:39:10,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331533199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:10,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:10,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:39:10,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057013614] [2022-11-16 12:39:10,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:10,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:39:10,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:10,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:39:10,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:39:10,337 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 269 [2022-11-16 12:39:10,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 269 transitions, 546 flow. Second operand has 2 states, 2 states have (on average 239.5) internal successors, (479), 2 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:10,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:39:10,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 269 [2022-11-16 12:39:10,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:39:10,471 INFO L130 PetriNetUnfolder]: 5/337 cut-off events. [2022-11-16 12:39:10,471 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-16 12:39:10,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 337 events. 5/337 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1137 event pairs, 0 based on Foata normal form. 40/347 useless extension candidates. Maximal degree in co-relation 194. Up to 4 conditions per place. [2022-11-16 12:39:10,480 INFO L137 encePairwiseOnDemand]: 242/269 looper letters, 2 selfloop transitions, 0 changer transitions 1/240 dead transitions. [2022-11-16 12:39:10,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 240 transitions, 492 flow [2022-11-16 12:39:10,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:39:10,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 12:39:10,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 505 transitions. [2022-11-16 12:39:10,498 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9386617100371747 [2022-11-16 12:39:10,499 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 505 transitions. [2022-11-16 12:39:10,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 505 transitions. [2022-11-16 12:39:10,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:39:10,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 505 transitions. [2022-11-16 12:39:10,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 252.5) internal successors, (505), 2 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:10,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:10,516 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:10,518 INFO L175 Difference]: Start difference. First operand has 241 places, 269 transitions, 546 flow. Second operand 2 states and 505 transitions. [2022-11-16 12:39:10,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 240 transitions, 492 flow [2022-11-16 12:39:10,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 240 transitions, 492 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:39:10,528 INFO L231 Difference]: Finished difference. Result has 240 places, 239 transitions, 486 flow [2022-11-16 12:39:10,531 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=486, PETRI_PLACES=240, PETRI_TRANSITIONS=239} [2022-11-16 12:39:10,534 INFO L288 CegarLoopForPetriNet]: 241 programPoint places, -1 predicate places. [2022-11-16 12:39:10,535 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 239 transitions, 486 flow [2022-11-16 12:39:10,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 239.5) internal successors, (479), 2 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:10,535 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:39:10,536 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:10,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:39:10,536 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-16 12:39:10,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:10,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1244587829, now seen corresponding path program 1 times [2022-11-16 12:39:10,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:10,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962553196] [2022-11-16 12:39:10,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:10,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:10,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:10,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:10,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962553196] [2022-11-16 12:39:10,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962553196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:10,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:10,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:39:10,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833831380] [2022-11-16 12:39:10,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:10,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:39:10,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:10,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:39:10,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:39:10,724 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 269 [2022-11-16 12:39:10,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 239 transitions, 486 flow. Second operand has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:10,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:39:10,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 269 [2022-11-16 12:39:10,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:39:10,827 INFO L130 PetriNetUnfolder]: 5/340 cut-off events. [2022-11-16 12:39:10,828 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-16 12:39:10,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 340 events. 5/340 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1134 event pairs, 0 based on Foata normal form. 0/311 useless extension candidates. Maximal degree in co-relation 357. Up to 10 conditions per place. [2022-11-16 12:39:10,832 INFO L137 encePairwiseOnDemand]: 266/269 looper letters, 11 selfloop transitions, 2 changer transitions 0/243 dead transitions. [2022-11-16 12:39:10,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 243 transitions, 520 flow [2022-11-16 12:39:10,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:39:10,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:39:10,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 707 transitions. [2022-11-16 12:39:10,838 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8760842627013631 [2022-11-16 12:39:10,838 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 707 transitions. [2022-11-16 12:39:10,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 707 transitions. [2022-11-16 12:39:10,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:39:10,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 707 transitions. [2022-11-16 12:39:10,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:10,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:10,849 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:10,850 INFO L175 Difference]: Start difference. First operand has 240 places, 239 transitions, 486 flow. Second operand 3 states and 707 transitions. [2022-11-16 12:39:10,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 243 transitions, 520 flow [2022-11-16 12:39:10,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 243 transitions, 520 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:39:10,864 INFO L231 Difference]: Finished difference. Result has 242 places, 240 transitions, 498 flow [2022-11-16 12:39:10,865 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=498, PETRI_PLACES=242, PETRI_TRANSITIONS=240} [2022-11-16 12:39:10,866 INFO L288 CegarLoopForPetriNet]: 241 programPoint places, 1 predicate places. [2022-11-16 12:39:10,867 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 240 transitions, 498 flow [2022-11-16 12:39:10,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:10,869 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:39:10,869 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:10,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:39:10,872 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-16 12:39:10,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:10,874 INFO L85 PathProgramCache]: Analyzing trace with hash -500602617, now seen corresponding path program 1 times [2022-11-16 12:39:10,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:10,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646712221] [2022-11-16 12:39:10,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:10,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:10,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:11,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:11,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:11,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646712221] [2022-11-16 12:39:11,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646712221] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:39:11,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799511075] [2022-11-16 12:39:11,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:11,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:39:11,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:39:11,111 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:39:11,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:39:11,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:11,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:39:11,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:11,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:39:11,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:39:11,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799511075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:11,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:39:11,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-16 12:39:11,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527213901] [2022-11-16 12:39:11,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:11,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:39:11,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:11,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:39:11,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:39:11,330 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 269 [2022-11-16 12:39:11,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 240 transitions, 498 flow. Second operand has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:11,332 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:39:11,332 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 269 [2022-11-16 12:39:11,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:39:11,424 INFO L130 PetriNetUnfolder]: 3/262 cut-off events. [2022-11-16 12:39:11,424 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-16 12:39:11,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 262 events. 3/262 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 563 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 282. Up to 7 conditions per place. [2022-11-16 12:39:11,428 INFO L137 encePairwiseOnDemand]: 266/269 looper letters, 9 selfloop transitions, 2 changer transitions 0/242 dead transitions. [2022-11-16 12:39:11,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 242 transitions, 524 flow [2022-11-16 12:39:11,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:39:11,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:39:11,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 705 transitions. [2022-11-16 12:39:11,433 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8736059479553904 [2022-11-16 12:39:11,433 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 705 transitions. [2022-11-16 12:39:11,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 705 transitions. [2022-11-16 12:39:11,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:39:11,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 705 transitions. [2022-11-16 12:39:11,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:11,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:11,440 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:11,441 INFO L175 Difference]: Start difference. First operand has 242 places, 240 transitions, 498 flow. Second operand 3 states and 705 transitions. [2022-11-16 12:39:11,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 242 transitions, 524 flow [2022-11-16 12:39:11,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 242 transitions, 522 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:39:11,447 INFO L231 Difference]: Finished difference. Result has 244 places, 240 transitions, 504 flow [2022-11-16 12:39:11,448 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=504, PETRI_PLACES=244, PETRI_TRANSITIONS=240} [2022-11-16 12:39:11,451 INFO L288 CegarLoopForPetriNet]: 241 programPoint places, 3 predicate places. [2022-11-16 12:39:11,451 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 240 transitions, 504 flow [2022-11-16 12:39:11,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:11,452 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:39:11,453 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:11,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 12:39:11,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:39:11,659 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-16 12:39:11,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:11,659 INFO L85 PathProgramCache]: Analyzing trace with hash 583738055, now seen corresponding path program 1 times [2022-11-16 12:39:11,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:11,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956890517] [2022-11-16 12:39:11,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:11,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:11,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:11,818 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:39:11,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:11,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956890517] [2022-11-16 12:39:11,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956890517] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:39:11,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51267219] [2022-11-16 12:39:11,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:11,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:39:11,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:39:11,822 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:39:11,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:39:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:11,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:39:11,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:12,007 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:39:12,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:39:12,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:39:12,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51267219] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:39:12,056 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:39:12,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 12:39:12,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818923416] [2022-11-16 12:39:12,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:39:12,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:39:12,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:12,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:39:12,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:39:12,071 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 269 [2022-11-16 12:39:12,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 240 transitions, 504 flow. Second operand has 10 states, 10 states have (on average 232.1) internal successors, (2321), 10 states have internal predecessors, (2321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:12,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:39:12,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 269 [2022-11-16 12:39:12,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:39:12,275 INFO L130 PetriNetUnfolder]: 3/269 cut-off events. [2022-11-16 12:39:12,275 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-16 12:39:12,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 269 events. 3/269 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 560 event pairs, 0 based on Foata normal form. 2/252 useless extension candidates. Maximal degree in co-relation 303. Up to 7 conditions per place. [2022-11-16 12:39:12,280 INFO L137 encePairwiseOnDemand]: 263/269 looper letters, 12 selfloop transitions, 9 changer transitions 0/250 dead transitions. [2022-11-16 12:39:12,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 250 transitions, 568 flow [2022-11-16 12:39:12,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:39:12,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:39:12,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2093 transitions. [2022-11-16 12:39:12,287 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8645187938868236 [2022-11-16 12:39:12,288 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2093 transitions. [2022-11-16 12:39:12,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2093 transitions. [2022-11-16 12:39:12,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:39:12,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2093 transitions. [2022-11-16 12:39:12,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 232.55555555555554) internal successors, (2093), 9 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:12,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 269.0) internal successors, (2690), 10 states have internal predecessors, (2690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:12,305 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 269.0) internal successors, (2690), 10 states have internal predecessors, (2690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:12,305 INFO L175 Difference]: Start difference. First operand has 244 places, 240 transitions, 504 flow. Second operand 9 states and 2093 transitions. [2022-11-16 12:39:12,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 250 transitions, 568 flow [2022-11-16 12:39:12,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 250 transitions, 564 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:39:12,314 INFO L231 Difference]: Finished difference. Result has 253 places, 246 transitions, 550 flow [2022-11-16 12:39:12,314 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=550, PETRI_PLACES=253, PETRI_TRANSITIONS=246} [2022-11-16 12:39:12,315 INFO L288 CegarLoopForPetriNet]: 241 programPoint places, 12 predicate places. [2022-11-16 12:39:12,315 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 246 transitions, 550 flow [2022-11-16 12:39:12,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 232.1) internal successors, (2321), 10 states have internal predecessors, (2321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:12,317 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:39:12,318 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:12,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:39:12,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:39:12,524 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-16 12:39:12,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:12,525 INFO L85 PathProgramCache]: Analyzing trace with hash 466748935, now seen corresponding path program 2 times [2022-11-16 12:39:12,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:12,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606756096] [2022-11-16 12:39:12,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:12,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:12,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:12,835 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:39:12,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:12,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606756096] [2022-11-16 12:39:12,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606756096] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:39:12,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252665245] [2022-11-16 12:39:12,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:39:12,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:39:12,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:39:12,837 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:39:12,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:39:12,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:39:12,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:39:12,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:39:12,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:13,052 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:39:13,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:39:13,211 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:39:13,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252665245] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:39:13,212 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:39:13,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 12:39:13,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73160370] [2022-11-16 12:39:13,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:39:13,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:39:13,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:13,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:39:13,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:39:13,230 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 269 [2022-11-16 12:39:13,237 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 246 transitions, 550 flow. Second operand has 18 states, 18 states have (on average 232.27777777777777) internal successors, (4181), 18 states have internal predecessors, (4181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:13,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:39:13,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 269 [2022-11-16 12:39:13,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:39:13,603 INFO L130 PetriNetUnfolder]: 3/289 cut-off events. [2022-11-16 12:39:13,603 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-11-16 12:39:13,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 289 events. 3/289 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 560 event pairs, 0 based on Foata normal form. 4/274 useless extension candidates. Maximal degree in co-relation 389. Up to 11 conditions per place. [2022-11-16 12:39:13,607 INFO L137 encePairwiseOnDemand]: 263/269 looper letters, 20 selfloop transitions, 21 changer transitions 0/270 dead transitions. [2022-11-16 12:39:13,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 270 transitions, 740 flow [2022-11-16 12:39:13,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:39:13,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:39:13,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4875 transitions. [2022-11-16 12:39:13,618 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8629845990440786 [2022-11-16 12:39:13,618 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4875 transitions. [2022-11-16 12:39:13,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4875 transitions. [2022-11-16 12:39:13,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:39:13,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4875 transitions. [2022-11-16 12:39:13,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 232.14285714285714) internal successors, (4875), 21 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:13,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 269.0) internal successors, (5918), 22 states have internal predecessors, (5918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:13,648 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 269.0) internal successors, (5918), 22 states have internal predecessors, (5918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:13,649 INFO L175 Difference]: Start difference. First operand has 253 places, 246 transitions, 550 flow. Second operand 21 states and 4875 transitions. [2022-11-16 12:39:13,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 270 transitions, 740 flow [2022-11-16 12:39:13,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 270 transitions, 726 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-16 12:39:13,657 INFO L231 Difference]: Finished difference. Result has 277 places, 259 transitions, 674 flow [2022-11-16 12:39:13,658 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=674, PETRI_PLACES=277, PETRI_TRANSITIONS=259} [2022-11-16 12:39:13,659 INFO L288 CegarLoopForPetriNet]: 241 programPoint places, 36 predicate places. [2022-11-16 12:39:13,659 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 259 transitions, 674 flow [2022-11-16 12:39:13,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 232.27777777777777) internal successors, (4181), 18 states have internal predecessors, (4181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:13,661 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:39:13,662 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:13,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:39:13,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:39:13,875 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-16 12:39:13,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:13,875 INFO L85 PathProgramCache]: Analyzing trace with hash 184196231, now seen corresponding path program 3 times [2022-11-16 12:39:13,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:13,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086367800] [2022-11-16 12:39:13,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:13,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:14,255 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:39:14,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:14,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086367800] [2022-11-16 12:39:14,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086367800] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:39:14,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195259116] [2022-11-16 12:39:14,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:39:14,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:39:14,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:39:14,260 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:39:14,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:39:14,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-16 12:39:14,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:39:14,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:39:14,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:14,596 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:39:14,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:39:14,839 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:39:14,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195259116] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:39:14,840 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:39:14,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-16 12:39:14,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465140673] [2022-11-16 12:39:14,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:39:14,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:39:14,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:14,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:39:14,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:39:14,851 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 269 [2022-11-16 12:39:14,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 259 transitions, 674 flow. Second operand has 23 states, 23 states have (on average 232.43478260869566) internal successors, (5346), 23 states have internal predecessors, (5346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:14,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:39:14,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 269 [2022-11-16 12:39:14,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:39:15,248 INFO L130 PetriNetUnfolder]: 3/304 cut-off events. [2022-11-16 12:39:15,249 INFO L131 PetriNetUnfolder]: For 113/113 co-relation queries the response was YES. [2022-11-16 12:39:15,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 304 events. 3/304 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 561 event pairs, 0 based on Foata normal form. 3/288 useless extension candidates. Maximal degree in co-relation 485. Up to 17 conditions per place. [2022-11-16 12:39:15,253 INFO L137 encePairwiseOnDemand]: 263/269 looper letters, 26 selfloop transitions, 30 changer transitions 0/285 dead transitions. [2022-11-16 12:39:15,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 285 transitions, 932 flow [2022-11-16 12:39:15,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 12:39:15,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 12:39:15,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 6959 transitions. [2022-11-16 12:39:15,268 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8623296158612144 [2022-11-16 12:39:15,268 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 6959 transitions. [2022-11-16 12:39:15,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 6959 transitions. [2022-11-16 12:39:15,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:39:15,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 6959 transitions. [2022-11-16 12:39:15,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 231.96666666666667) internal successors, (6959), 30 states have internal predecessors, (6959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:15,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 269.0) internal successors, (8339), 31 states have internal predecessors, (8339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:15,307 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 269.0) internal successors, (8339), 31 states have internal predecessors, (8339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:15,307 INFO L175 Difference]: Start difference. First operand has 277 places, 259 transitions, 674 flow. Second operand 30 states and 6959 transitions. [2022-11-16 12:39:15,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 285 transitions, 932 flow [2022-11-16 12:39:15,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 285 transitions, 902 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-11-16 12:39:15,316 INFO L231 Difference]: Finished difference. Result has 304 places, 269 transitions, 802 flow [2022-11-16 12:39:15,317 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=802, PETRI_PLACES=304, PETRI_TRANSITIONS=269} [2022-11-16 12:39:15,317 INFO L288 CegarLoopForPetriNet]: 241 programPoint places, 63 predicate places. [2022-11-16 12:39:15,317 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 269 transitions, 802 flow [2022-11-16 12:39:15,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 232.43478260869566) internal successors, (5346), 23 states have internal predecessors, (5346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:15,320 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:39:15,320 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:15,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-16 12:39:15,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 12:39:15,526 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-16 12:39:15,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:15,527 INFO L85 PathProgramCache]: Analyzing trace with hash 926446105, now seen corresponding path program 4 times [2022-11-16 12:39:15,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:15,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032394792] [2022-11-16 12:39:15,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:15,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:15,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:39:15,560 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:39:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:39:15,620 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:39:15,620 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:39:15,621 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-16 12:39:15,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-11-16 12:39:15,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-11-16 12:39:15,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-11-16 12:39:15,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-11-16 12:39:15,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-11-16 12:39:15,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-11-16 12:39:15,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-11-16 12:39:15,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-11-16 12:39:15,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-11-16 12:39:15,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-11-16 12:39:15,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2022-11-16 12:39:15,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-11-16 12:39:15,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-11-16 12:39:15,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-11-16 12:39:15,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-11-16 12:39:15,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-11-16 12:39:15,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:39:15,629 INFO L444 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2022-11-16 12:39:15,632 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:39:15,632 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 12:39:15,728 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 12:39:15,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 334 places, 374 transitions, 766 flow [2022-11-16 12:39:15,861 INFO L130 PetriNetUnfolder]: 75/627 cut-off events. [2022-11-16 12:39:15,861 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-16 12:39:15,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 641 conditions, 627 events. 75/627 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3127 event pairs, 0 based on Foata normal form. 0/519 useless extension candidates. Maximal degree in co-relation 382. Up to 12 conditions per place. [2022-11-16 12:39:15,872 INFO L82 GeneralOperation]: Start removeDead. Operand has 334 places, 374 transitions, 766 flow [2022-11-16 12:39:15,882 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 334 places, 374 transitions, 766 flow [2022-11-16 12:39:15,884 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:39:15,884 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;@2f878f37, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:39:15,885 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-16 12:39:15,895 INFO L130 PetriNetUnfolder]: 11/115 cut-off events. [2022-11-16 12:39:15,895 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:39:15,895 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:39:15,896 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:15,896 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-16 12:39:15,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:15,897 INFO L85 PathProgramCache]: Analyzing trace with hash -2046676050, now seen corresponding path program 1 times [2022-11-16 12:39:15,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:15,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403274112] [2022-11-16 12:39:15,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:15,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:15,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:15,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:15,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403274112] [2022-11-16 12:39:15,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403274112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:15,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:15,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:39:15,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850849266] [2022-11-16 12:39:15,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:15,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:39:15,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:15,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:39:15,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:39:15,925 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 374 [2022-11-16 12:39:15,926 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 374 transitions, 766 flow. Second operand has 2 states, 2 states have (on average 329.5) internal successors, (659), 2 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:15,926 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:39:15,926 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 374 [2022-11-16 12:39:15,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:39:16,074 INFO L130 PetriNetUnfolder]: 9/556 cut-off events. [2022-11-16 12:39:16,074 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-16 12:39:16,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 577 conditions, 556 events. 9/556 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2564 event pairs, 0 based on Foata normal form. 91/597 useless extension candidates. Maximal degree in co-relation 341. Up to 7 conditions per place. [2022-11-16 12:39:16,087 INFO L137 encePairwiseOnDemand]: 335/374 looper letters, 4 selfloop transitions, 0 changer transitions 1/332 dead transitions. [2022-11-16 12:39:16,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 332 transitions, 690 flow [2022-11-16 12:39:16,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:39:16,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 12:39:16,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 699 transitions. [2022-11-16 12:39:16,090 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9344919786096256 [2022-11-16 12:39:16,091 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 699 transitions. [2022-11-16 12:39:16,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 699 transitions. [2022-11-16 12:39:16,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:39:16,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 699 transitions. [2022-11-16 12:39:16,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 349.5) internal successors, (699), 2 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:16,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 374.0) internal successors, (1122), 3 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:16,096 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 374.0) internal successors, (1122), 3 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:16,097 INFO L175 Difference]: Start difference. First operand has 334 places, 374 transitions, 766 flow. Second operand 2 states and 699 transitions. [2022-11-16 12:39:16,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 332 transitions, 690 flow [2022-11-16 12:39:16,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 332 transitions, 690 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:39:16,150 INFO L231 Difference]: Finished difference. Result has 332 places, 331 transitions, 680 flow [2022-11-16 12:39:16,154 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=680, PETRI_PLACES=332, PETRI_TRANSITIONS=331} [2022-11-16 12:39:16,155 INFO L288 CegarLoopForPetriNet]: 334 programPoint places, -2 predicate places. [2022-11-16 12:39:16,156 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 331 transitions, 680 flow [2022-11-16 12:39:16,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 329.5) internal successors, (659), 2 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:16,157 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:39:16,157 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:16,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:39:16,158 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-16 12:39:16,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:16,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1109165739, now seen corresponding path program 1 times [2022-11-16 12:39:16,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:16,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635954809] [2022-11-16 12:39:16,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:16,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:16,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:16,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:16,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635954809] [2022-11-16 12:39:16,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635954809] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:16,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:16,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:39:16,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195316978] [2022-11-16 12:39:16,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:16,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:39:16,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:16,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:39:16,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:39:16,217 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 374 [2022-11-16 12:39:16,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 331 transitions, 680 flow. Second operand has 3 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:16,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:39:16,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 374 [2022-11-16 12:39:16,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:39:16,409 INFO L130 PetriNetUnfolder]: 9/559 cut-off events. [2022-11-16 12:39:16,409 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-16 12:39:16,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 592 conditions, 559 events. 9/559 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2563 event pairs, 0 based on Foata normal form. 0/510 useless extension candidates. Maximal degree in co-relation 587. Up to 14 conditions per place. [2022-11-16 12:39:16,422 INFO L137 encePairwiseOnDemand]: 371/374 looper letters, 13 selfloop transitions, 2 changer transitions 0/335 dead transitions. [2022-11-16 12:39:16,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 335 transitions, 718 flow [2022-11-16 12:39:16,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:39:16,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:39:16,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 979 transitions. [2022-11-16 12:39:16,426 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8725490196078431 [2022-11-16 12:39:16,426 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 979 transitions. [2022-11-16 12:39:16,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 979 transitions. [2022-11-16 12:39:16,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:39:16,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 979 transitions. [2022-11-16 12:39:16,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:16,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:16,434 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:16,434 INFO L175 Difference]: Start difference. First operand has 332 places, 331 transitions, 680 flow. Second operand 3 states and 979 transitions. [2022-11-16 12:39:16,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 335 transitions, 718 flow [2022-11-16 12:39:16,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 335 transitions, 718 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:39:16,442 INFO L231 Difference]: Finished difference. Result has 334 places, 332 transitions, 692 flow [2022-11-16 12:39:16,442 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=692, PETRI_PLACES=334, PETRI_TRANSITIONS=332} [2022-11-16 12:39:16,443 INFO L288 CegarLoopForPetriNet]: 334 programPoint places, 0 predicate places. [2022-11-16 12:39:16,443 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 332 transitions, 692 flow [2022-11-16 12:39:16,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:16,444 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:39:16,444 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:16,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:39:16,445 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-16 12:39:16,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:16,446 INFO L85 PathProgramCache]: Analyzing trace with hash 126420807, now seen corresponding path program 1 times [2022-11-16 12:39:16,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:16,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671730419] [2022-11-16 12:39:16,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:16,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:16,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:16,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:16,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:16,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671730419] [2022-11-16 12:39:16,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671730419] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:39:16,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334116067] [2022-11-16 12:39:16,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:16,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:39:16,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:39:16,524 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:39:16,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:39:16,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:16,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:39:16,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:16,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:39:16,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:39:16,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334116067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:16,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:39:16,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-16 12:39:16,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613552071] [2022-11-16 12:39:16,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:16,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:39:16,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:16,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:39:16,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:39:16,678 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 374 [2022-11-16 12:39:16,680 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 332 transitions, 692 flow. Second operand has 3 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:16,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:39:16,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 374 [2022-11-16 12:39:16,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:39:16,846 INFO L130 PetriNetUnfolder]: 7/481 cut-off events. [2022-11-16 12:39:16,846 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-16 12:39:16,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 524 conditions, 481 events. 7/481 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1934 event pairs, 0 based on Foata normal form. 0/441 useless extension candidates. Maximal degree in co-relation 517. Up to 16 conditions per place. [2022-11-16 12:39:16,856 INFO L137 encePairwiseOnDemand]: 371/374 looper letters, 13 selfloop transitions, 2 changer transitions 0/336 dead transitions. [2022-11-16 12:39:16,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 336 transitions, 730 flow [2022-11-16 12:39:16,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:39:16,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:39:16,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 979 transitions. [2022-11-16 12:39:16,860 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8725490196078431 [2022-11-16 12:39:16,860 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 979 transitions. [2022-11-16 12:39:16,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 979 transitions. [2022-11-16 12:39:16,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:39:16,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 979 transitions. [2022-11-16 12:39:16,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:16,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:16,867 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:16,868 INFO L175 Difference]: Start difference. First operand has 334 places, 332 transitions, 692 flow. Second operand 3 states and 979 transitions. [2022-11-16 12:39:16,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 336 transitions, 730 flow [2022-11-16 12:39:16,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 336 transitions, 728 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:39:16,875 INFO L231 Difference]: Finished difference. Result has 336 places, 333 transitions, 702 flow [2022-11-16 12:39:16,876 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=702, PETRI_PLACES=336, PETRI_TRANSITIONS=333} [2022-11-16 12:39:16,877 INFO L288 CegarLoopForPetriNet]: 334 programPoint places, 2 predicate places. [2022-11-16 12:39:16,877 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 333 transitions, 702 flow [2022-11-16 12:39:16,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:16,878 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:39:16,878 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:16,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:39:17,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 12:39:17,084 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-16 12:39:17,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:17,084 INFO L85 PathProgramCache]: Analyzing trace with hash 358436572, now seen corresponding path program 1 times [2022-11-16 12:39:17,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:17,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960724663] [2022-11-16 12:39:17,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:17,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:17,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:39:17,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:17,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960724663] [2022-11-16 12:39:17,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960724663] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:39:17,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705113868] [2022-11-16 12:39:17,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:17,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:39:17,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:39:17,185 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:39:17,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:39:17,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:17,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:39:17,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:17,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:39:17,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:39:17,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:39:17,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705113868] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:39:17,399 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:39:17,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 12:39:17,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385572024] [2022-11-16 12:39:17,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:39:17,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:39:17,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:17,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:39:17,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:39:17,404 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 374 [2022-11-16 12:39:17,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 333 transitions, 702 flow. Second operand has 10 states, 10 states have (on average 322.1) internal successors, (3221), 10 states have internal predecessors, (3221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:17,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:39:17,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 374 [2022-11-16 12:39:17,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:39:17,627 INFO L130 PetriNetUnfolder]: 7/488 cut-off events. [2022-11-16 12:39:17,627 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-16 12:39:17,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 488 events. 7/488 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1928 event pairs, 0 based on Foata normal form. 2/452 useless extension candidates. Maximal degree in co-relation 535. Up to 11 conditions per place. [2022-11-16 12:39:17,641 INFO L137 encePairwiseOnDemand]: 368/374 looper letters, 14 selfloop transitions, 9 changer transitions 0/343 dead transitions. [2022-11-16 12:39:17,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 343 transitions, 770 flow [2022-11-16 12:39:17,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:39:17,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:39:17,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2905 transitions. [2022-11-16 12:39:17,648 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8630421865715984 [2022-11-16 12:39:17,649 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2905 transitions. [2022-11-16 12:39:17,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2905 transitions. [2022-11-16 12:39:17,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:39:17,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2905 transitions. [2022-11-16 12:39:17,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 322.77777777777777) internal successors, (2905), 9 states have internal predecessors, (2905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:17,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 374.0) internal successors, (3740), 10 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:17,667 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 374.0) internal successors, (3740), 10 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:17,667 INFO L175 Difference]: Start difference. First operand has 336 places, 333 transitions, 702 flow. Second operand 9 states and 2905 transitions. [2022-11-16 12:39:17,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 343 transitions, 770 flow [2022-11-16 12:39:17,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 343 transitions, 768 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:39:17,675 INFO L231 Difference]: Finished difference. Result has 346 places, 339 transitions, 750 flow [2022-11-16 12:39:17,676 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=750, PETRI_PLACES=346, PETRI_TRANSITIONS=339} [2022-11-16 12:39:17,677 INFO L288 CegarLoopForPetriNet]: 334 programPoint places, 12 predicate places. [2022-11-16 12:39:17,677 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 339 transitions, 750 flow [2022-11-16 12:39:17,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 322.1) internal successors, (3221), 10 states have internal predecessors, (3221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:17,679 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:39:17,679 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:17,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:39:17,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:39:17,885 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-16 12:39:17,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:17,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1381622436, now seen corresponding path program 2 times [2022-11-16 12:39:17,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:17,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963918274] [2022-11-16 12:39:17,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:17,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:17,991 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 12:39:17,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:17,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963918274] [2022-11-16 12:39:17,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963918274] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:39:17,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711037663] [2022-11-16 12:39:17,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:39:17,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:39:17,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:39:17,994 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:39:18,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2888066-8af7-4c18-b050-a5f8fe2b3e7f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:39:18,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:39:18,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:39:18,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 12:39:18,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:18,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 12:39:18,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-16 12:39:18,246 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:39:18,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2022-11-16 12:39:18,295 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:39:18,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2022-11-16 12:39:18,325 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-16 12:39:18,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:39:18,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711037663] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:18,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:39:18,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2022-11-16 12:39:18,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183182134] [2022-11-16 12:39:18,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:18,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:39:18,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:18,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:39:18,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:39:18,331 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 374 [2022-11-16 12:39:18,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 339 transitions, 750 flow. Second operand has 6 states, 6 states have (on average 209.33333333333334) internal successors, (1256), 6 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:18,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:39:18,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 374 [2022-11-16 12:39:18,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand