./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/singleton.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c009f71-97cc-4741-a6f5-e5f36be0f6fd/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c009f71-97cc-4741-a6f5-e5f36be0f6fd/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c009f71-97cc-4741-a6f5-e5f36be0f6fd/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c009f71-97cc-4741-a6f5-e5f36be0f6fd/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/singleton.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c009f71-97cc-4741-a6f5-e5f36be0f6fd/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c009f71-97cc-4741-a6f5-e5f36be0f6fd/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ea0ecaab9c4a4889914d1343f60808acf6ec66df89812b70cea6837a39471f7f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:00:30,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:00:30,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:00:30,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:00:30,084 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:00:30,085 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:00:30,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:00:30,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:00:30,090 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:00:30,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:00:30,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:00:30,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:00:30,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:00:30,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:00:30,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:00:30,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:00:30,099 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:00:30,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:00:30,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:00:30,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:00:30,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:00:30,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:00:30,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:00:30,111 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:00:30,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:00:30,115 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:00:30,116 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:00:30,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:00:30,118 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:00:30,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:00:30,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:00:30,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:00:30,121 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:00:30,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:00:30,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:00:30,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:00:30,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:00:30,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:00:30,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:00:30,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:00:30,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:00:30,135 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c009f71-97cc-4741-a6f5-e5f36be0f6fd/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-20 12:00:30,175 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:00:30,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:00:30,176 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:00:30,177 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:00:30,178 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:00:30,178 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:00:30,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:00:30,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:00:30,180 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:00:30,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:00:30,181 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:00:30,182 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:00:30,182 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:00:30,182 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:00:30,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:00:30,183 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:00:30,183 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:00:30,183 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:00:30,184 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-20 12:00:30,184 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:00:30,184 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:00:30,184 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:00:30,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:00:30,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:00:30,185 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:00:30,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:00:30,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:00:30,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:00:30,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:00:30,187 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:00:30,187 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:00:30,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:00:30,188 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:00:30,189 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:00:30,189 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:00:30,189 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_2c009f71-97cc-4741-a6f5-e5f36be0f6fd/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c009f71-97cc-4741-a6f5-e5f36be0f6fd/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea0ecaab9c4a4889914d1343f60808acf6ec66df89812b70cea6837a39471f7f [2022-11-20 12:00:30,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:00:30,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:00:30,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:00:30,490 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:00:30,491 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:00:30,492 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c009f71-97cc-4741-a6f5-e5f36be0f6fd/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread/singleton.i [2022-11-20 12:00:33,635 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:00:33,966 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:00:33,967 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c009f71-97cc-4741-a6f5-e5f36be0f6fd/sv-benchmarks/c/pthread/singleton.i [2022-11-20 12:00:34,000 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c009f71-97cc-4741-a6f5-e5f36be0f6fd/bin/uautomizer-ug76WZFUDN/data/1a492e432/7443b2e2cb3646a78fc547496cec81f9/FLAGd63092d8a [2022-11-20 12:00:34,021 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c009f71-97cc-4741-a6f5-e5f36be0f6fd/bin/uautomizer-ug76WZFUDN/data/1a492e432/7443b2e2cb3646a78fc547496cec81f9 [2022-11-20 12:00:34,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:00:34,030 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:00:34,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:00:34,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:00:34,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:00:34,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:00:34" (1/1) ... [2022-11-20 12:00:34,046 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2440dab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:34, skipping insertion in model container [2022-11-20 12:00:34,046 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:00:34" (1/1) ... [2022-11-20 12:00:34,055 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:00:34,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:00:34,382 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-20 12:00:34,680 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c009f71-97cc-4741-a6f5-e5f36be0f6fd/sv-benchmarks/c/pthread/singleton.i[55547,55560] [2022-11-20 12:00:34,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:00:34,752 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:00:34,786 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-20 12:00:34,839 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c009f71-97cc-4741-a6f5-e5f36be0f6fd/sv-benchmarks/c/pthread/singleton.i[55547,55560] [2022-11-20 12:00:34,855 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:00:34,936 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:00:34,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:34 WrapperNode [2022-11-20 12:00:34,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:00:34,939 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:00:34,939 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:00:34,939 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:00:34,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:34" (1/1) ... [2022-11-20 12:00:34,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:34" (1/1) ... [2022-11-20 12:00:35,028 INFO L138 Inliner]: procedures = 325, calls = 52, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2022-11-20 12:00:35,028 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:00:35,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:00:35,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:00:35,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:00:35,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:34" (1/1) ... [2022-11-20 12:00:35,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:34" (1/1) ... [2022-11-20 12:00:35,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:34" (1/1) ... [2022-11-20 12:00:35,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:34" (1/1) ... [2022-11-20 12:00:35,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:34" (1/1) ... [2022-11-20 12:00:35,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:34" (1/1) ... [2022-11-20 12:00:35,093 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:34" (1/1) ... [2022-11-20 12:00:35,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:34" (1/1) ... [2022-11-20 12:00:35,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:00:35,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:00:35,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:00:35,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:00:35,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:34" (1/1) ... [2022-11-20 12:00:35,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:00:35,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c009f71-97cc-4741-a6f5-e5f36be0f6fd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:00:35,132 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c009f71-97cc-4741-a6f5-e5f36be0f6fd/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:00:35,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c009f71-97cc-4741-a6f5-e5f36be0f6fd/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:00:35,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 12:00:35,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:00:35,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:00:35,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 12:00:35,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:00:35,180 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2022-11-20 12:00:35,181 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2022-11-20 12:00:35,181 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 12:00:35,181 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 12:00:35,181 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 12:00:35,182 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 12:00:35,187 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 12:00:35,187 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 12:00:35,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:00:35,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:00:35,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:00:35,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:00:35,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:00:35,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:00:35,190 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:00:35,444 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:00:35,447 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:00:35,912 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:00:35,948 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:00:35,949 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:00:35,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:00:35 BoogieIcfgContainer [2022-11-20 12:00:35,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:00:35,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:00:35,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:00:35,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:00:35,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:00:34" (1/3) ... [2022-11-20 12:00:35,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c77bbee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:00:35, skipping insertion in model container [2022-11-20 12:00:35,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:34" (2/3) ... [2022-11-20 12:00:35,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c77bbee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:00:35, skipping insertion in model container [2022-11-20 12:00:35,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:00:35" (3/3) ... [2022-11-20 12:00:35,962 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton.i [2022-11-20 12:00:35,971 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:00:35,981 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:00:35,982 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2022-11-20 12:00:35,982 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:00:36,142 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2022-11-20 12:00:36,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 282 places, 272 transitions, 651 flow [2022-11-20 12:00:36,282 INFO L130 PetriNetUnfolder]: 6/185 cut-off events. [2022-11-20 12:00:36,282 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-20 12:00:36,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 185 events. 6/185 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 114 event pairs, 0 based on Foata normal form. 0/162 useless extension candidates. Maximal degree in co-relation 162. Up to 3 conditions per place. [2022-11-20 12:00:36,289 INFO L82 GeneralOperation]: Start removeDead. Operand has 282 places, 272 transitions, 651 flow [2022-11-20 12:00:36,295 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 168 transitions, 387 flow [2022-11-20 12:00:36,306 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:00:36,313 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;@7cdeec9f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:00:36,313 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-11-20 12:00:36,322 INFO L130 PetriNetUnfolder]: 0/33 cut-off events. [2022-11-20 12:00:36,322 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:00:36,322 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:00:36,323 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] [2022-11-20 12:00:36,324 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-20 12:00:36,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:00:36,330 INFO L85 PathProgramCache]: Analyzing trace with hash -59342021, now seen corresponding path program 1 times [2022-11-20 12:00:36,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:00:36,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788880654] [2022-11-20 12:00:36,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:00:36,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:00:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:37,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:00:37,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:00:37,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788880654] [2022-11-20 12:00:37,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788880654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:00:37,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:00:37,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:00:37,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671595882] [2022-11-20 12:00:37,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:00:37,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:00:37,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:00:37,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:00:37,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:00:37,317 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 274 [2022-11-20 12:00:37,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 168 transitions, 387 flow. Second operand has 6 states, 6 states have (on average 161.66666666666666) internal successors, (970), 6 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:37,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:00:37,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 274 [2022-11-20 12:00:37,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:00:40,867 INFO L130 PetriNetUnfolder]: 6956/11018 cut-off events. [2022-11-20 12:00:40,867 INFO L131 PetriNetUnfolder]: For 548/592 co-relation queries the response was YES. [2022-11-20 12:00:40,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21683 conditions, 11018 events. 6956/11018 cut-off events. For 548/592 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 66464 event pairs, 2259 based on Foata normal form. 5/10088 useless extension candidates. Maximal degree in co-relation 21627. Up to 7336 conditions per place. [2022-11-20 12:00:40,996 INFO L137 encePairwiseOnDemand]: 256/274 looper letters, 245 selfloop transitions, 21 changer transitions 0/363 dead transitions. [2022-11-20 12:00:40,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 363 transitions, 1492 flow [2022-11-20 12:00:40,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:00:41,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:00:41,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1267 transitions. [2022-11-20 12:00:41,024 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7706812652068127 [2022-11-20 12:00:41,025 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1267 transitions. [2022-11-20 12:00:41,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1267 transitions. [2022-11-20 12:00:41,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:00:41,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1267 transitions. [2022-11-20 12:00:41,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 211.16666666666666) internal successors, (1267), 6 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:41,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 274.0) internal successors, (1918), 7 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:41,113 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 274.0) internal successors, (1918), 7 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:41,116 INFO L175 Difference]: Start difference. First operand has 182 places, 168 transitions, 387 flow. Second operand 6 states and 1267 transitions. [2022-11-20 12:00:41,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 363 transitions, 1492 flow [2022-11-20 12:00:41,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 363 transitions, 1336 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-11-20 12:00:41,149 INFO L231 Difference]: Finished difference. Result has 172 places, 180 transitions, 479 flow [2022-11-20 12:00:41,151 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=479, PETRI_PLACES=172, PETRI_TRANSITIONS=180} [2022-11-20 12:00:41,157 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, -10 predicate places. [2022-11-20 12:00:41,158 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 180 transitions, 479 flow [2022-11-20 12:00:41,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 161.66666666666666) internal successors, (970), 6 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:41,159 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:00:41,160 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] [2022-11-20 12:00:41,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:00:41,161 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-20 12:00:41,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:00:41,163 INFO L85 PathProgramCache]: Analyzing trace with hash 21299019, now seen corresponding path program 1 times [2022-11-20 12:00:41,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:00:41,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515554134] [2022-11-20 12:00:41,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:00:41,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:00:41,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:41,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:00:41,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:00:41,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515554134] [2022-11-20 12:00:41,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515554134] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:00:41,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:00:41,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:00:41,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174839728] [2022-11-20 12:00:41,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:00:41,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:00:41,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:00:41,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:00:41,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:00:41,290 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 274 [2022-11-20 12:00:41,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 180 transitions, 479 flow. Second operand has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:41,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:00:41,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 274 [2022-11-20 12:00:41,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:00:41,826 INFO L130 PetriNetUnfolder]: 778/2150 cut-off events. [2022-11-20 12:00:41,826 INFO L131 PetriNetUnfolder]: For 1158/1340 co-relation queries the response was YES. [2022-11-20 12:00:41,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4645 conditions, 2150 events. 778/2150 cut-off events. For 1158/1340 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 13618 event pairs, 306 based on Foata normal form. 0/1960 useless extension candidates. Maximal degree in co-relation 2971. Up to 941 conditions per place. [2022-11-20 12:00:41,845 INFO L137 encePairwiseOnDemand]: 271/274 looper letters, 42 selfloop transitions, 2 changer transitions 0/179 dead transitions. [2022-11-20 12:00:41,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 179 transitions, 565 flow [2022-11-20 12:00:41,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:00:41,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:00:41,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 692 transitions. [2022-11-20 12:00:41,848 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8418491484184915 [2022-11-20 12:00:41,848 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 692 transitions. [2022-11-20 12:00:41,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 692 transitions. [2022-11-20 12:00:41,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:00:41,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 692 transitions. [2022-11-20 12:00:41,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 230.66666666666666) internal successors, (692), 3 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:41,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:41,853 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:41,854 INFO L175 Difference]: Start difference. First operand has 172 places, 180 transitions, 479 flow. Second operand 3 states and 692 transitions. [2022-11-20 12:00:41,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 179 transitions, 565 flow [2022-11-20 12:00:41,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 179 transitions, 565 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:00:41,862 INFO L231 Difference]: Finished difference. Result has 173 places, 179 transitions, 481 flow [2022-11-20 12:00:41,862 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=481, PETRI_PLACES=173, PETRI_TRANSITIONS=179} [2022-11-20 12:00:41,863 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, -9 predicate places. [2022-11-20 12:00:41,863 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 179 transitions, 481 flow [2022-11-20 12:00:41,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:41,864 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:00:41,864 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] [2022-11-20 12:00:41,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:00:41,865 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread0Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-20 12:00:41,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:00:41,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1560345132, now seen corresponding path program 1 times [2022-11-20 12:00:41,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:00:41,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247117354] [2022-11-20 12:00:41,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:00:41,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:00:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:42,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:00:42,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:00:42,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247117354] [2022-11-20 12:00:42,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247117354] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:00:42,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:00:42,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:00:42,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644050426] [2022-11-20 12:00:42,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:00:42,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:00:42,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:00:42,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:00:42,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:00:42,253 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 274 [2022-11-20 12:00:42,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 179 transitions, 481 flow. Second operand has 6 states, 6 states have (on average 162.66666666666666) internal successors, (976), 6 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:42,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:00:42,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 274 [2022-11-20 12:00:42,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:00:44,569 INFO L130 PetriNetUnfolder]: 6392/10591 cut-off events. [2022-11-20 12:00:44,569 INFO L131 PetriNetUnfolder]: For 10529/10565 co-relation queries the response was YES. [2022-11-20 12:00:44,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29262 conditions, 10591 events. 6392/10591 cut-off events. For 10529/10565 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 63589 event pairs, 2715 based on Foata normal form. 24/10036 useless extension candidates. Maximal degree in co-relation 24378. Up to 8947 conditions per place. [2022-11-20 12:00:44,677 INFO L137 encePairwiseOnDemand]: 265/274 looper letters, 108 selfloop transitions, 24 changer transitions 0/227 dead transitions. [2022-11-20 12:00:44,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 227 transitions, 988 flow [2022-11-20 12:00:44,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:00:44,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:00:44,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1063 transitions. [2022-11-20 12:00:44,680 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6465936739659367 [2022-11-20 12:00:44,681 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1063 transitions. [2022-11-20 12:00:44,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1063 transitions. [2022-11-20 12:00:44,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:00:44,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1063 transitions. [2022-11-20 12:00:44,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 177.16666666666666) internal successors, (1063), 6 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:44,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 274.0) internal successors, (1918), 7 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:44,689 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 274.0) internal successors, (1918), 7 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:44,690 INFO L175 Difference]: Start difference. First operand has 173 places, 179 transitions, 481 flow. Second operand 6 states and 1063 transitions. [2022-11-20 12:00:44,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 227 transitions, 988 flow [2022-11-20 12:00:44,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 227 transitions, 984 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:00:44,720 INFO L231 Difference]: Finished difference. Result has 176 places, 198 transitions, 696 flow [2022-11-20 12:00:44,721 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=696, PETRI_PLACES=176, PETRI_TRANSITIONS=198} [2022-11-20 12:00:44,722 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, -6 predicate places. [2022-11-20 12:00:44,722 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 198 transitions, 696 flow [2022-11-20 12:00:44,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 162.66666666666666) internal successors, (976), 6 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:44,723 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:00:44,723 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:00:44,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:00:44,724 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-20 12:00:44,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:00:44,724 INFO L85 PathProgramCache]: Analyzing trace with hash -953857843, now seen corresponding path program 1 times [2022-11-20 12:00:44,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:00:44,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769593493] [2022-11-20 12:00:44,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:00:44,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:00:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:45,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:00:45,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:00:45,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769593493] [2022-11-20 12:00:45,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769593493] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:00:45,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:00:45,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 12:00:45,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158266764] [2022-11-20 12:00:45,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:00:45,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:00:45,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:00:45,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:00:45,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:00:45,992 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 274 [2022-11-20 12:00:45,994 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 198 transitions, 696 flow. Second operand has 12 states, 12 states have (on average 135.83333333333334) internal successors, (1630), 12 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:45,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:00:45,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 274 [2022-11-20 12:00:45,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:00:51,298 INFO L130 PetriNetUnfolder]: 9736/16108 cut-off events. [2022-11-20 12:00:51,298 INFO L131 PetriNetUnfolder]: For 21089/21122 co-relation queries the response was YES. [2022-11-20 12:00:51,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51132 conditions, 16108 events. 9736/16108 cut-off events. For 21089/21122 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 104921 event pairs, 3502 based on Foata normal form. 246/15364 useless extension candidates. Maximal degree in co-relation 25640. Up to 7720 conditions per place. [2022-11-20 12:00:51,476 INFO L137 encePairwiseOnDemand]: 256/274 looper letters, 477 selfloop transitions, 92 changer transitions 0/643 dead transitions. [2022-11-20 12:00:51,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 643 transitions, 3353 flow [2022-11-20 12:00:51,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:00:51,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 12:00:51,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2901 transitions. [2022-11-20 12:00:51,489 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5881995133819952 [2022-11-20 12:00:51,489 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2901 transitions. [2022-11-20 12:00:51,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2901 transitions. [2022-11-20 12:00:51,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:00:51,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2901 transitions. [2022-11-20 12:00:51,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 161.16666666666666) internal successors, (2901), 18 states have internal predecessors, (2901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:51,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 274.0) internal successors, (5206), 19 states have internal predecessors, (5206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:51,514 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 274.0) internal successors, (5206), 19 states have internal predecessors, (5206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:51,515 INFO L175 Difference]: Start difference. First operand has 176 places, 198 transitions, 696 flow. Second operand 18 states and 2901 transitions. [2022-11-20 12:00:51,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 643 transitions, 3353 flow [2022-11-20 12:00:51,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 643 transitions, 3202 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:00:51,650 INFO L231 Difference]: Finished difference. Result has 204 places, 269 transitions, 1562 flow [2022-11-20 12:00:51,651 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1562, PETRI_PLACES=204, PETRI_TRANSITIONS=269} [2022-11-20 12:00:51,652 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 22 predicate places. [2022-11-20 12:00:51,652 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 269 transitions, 1562 flow [2022-11-20 12:00:51,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 135.83333333333334) internal successors, (1630), 12 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:51,654 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:00:51,654 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] [2022-11-20 12:00:51,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:00:51,654 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-20 12:00:51,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:00:51,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1899085895, now seen corresponding path program 2 times [2022-11-20 12:00:51,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:00:51,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759450709] [2022-11-20 12:00:51,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:00:51,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:00:51,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:52,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:00:52,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:00:52,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759450709] [2022-11-20 12:00:52,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759450709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:00:52,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:00:52,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:00:52,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795586012] [2022-11-20 12:00:52,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:00:52,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:00:52,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:00:52,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:00:52,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:00:52,305 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 274 [2022-11-20 12:00:52,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 269 transitions, 1562 flow. Second operand has 10 states, 10 states have (on average 151.9) internal successors, (1519), 10 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:52,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:00:52,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 274 [2022-11-20 12:00:52,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:00:57,463 INFO L130 PetriNetUnfolder]: 11963/20463 cut-off events. [2022-11-20 12:00:57,464 INFO L131 PetriNetUnfolder]: For 51211/51261 co-relation queries the response was YES. [2022-11-20 12:00:57,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71839 conditions, 20463 events. 11963/20463 cut-off events. For 51211/51261 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 141648 event pairs, 4135 based on Foata normal form. 247/19468 useless extension candidates. Maximal degree in co-relation 68615. Up to 7595 conditions per place. [2022-11-20 12:00:57,808 INFO L137 encePairwiseOnDemand]: 264/274 looper letters, 449 selfloop transitions, 45 changer transitions 0/585 dead transitions. [2022-11-20 12:00:57,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 585 transitions, 3872 flow [2022-11-20 12:00:57,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 12:00:57,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-20 12:00:57,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2729 transitions. [2022-11-20 12:00:57,817 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6224908759124088 [2022-11-20 12:00:57,817 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2729 transitions. [2022-11-20 12:00:57,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2729 transitions. [2022-11-20 12:00:57,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:00:57,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2729 transitions. [2022-11-20 12:00:57,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 170.5625) internal successors, (2729), 16 states have internal predecessors, (2729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:57,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 274.0) internal successors, (4658), 17 states have internal predecessors, (4658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:57,838 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 274.0) internal successors, (4658), 17 states have internal predecessors, (4658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:57,839 INFO L175 Difference]: Start difference. First operand has 204 places, 269 transitions, 1562 flow. Second operand 16 states and 2729 transitions. [2022-11-20 12:00:57,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 585 transitions, 3872 flow [2022-11-20 12:00:58,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 585 transitions, 3852 flow, removed 10 selfloop flow, removed 0 redundant places. [2022-11-20 12:00:58,155 INFO L231 Difference]: Finished difference. Result has 228 places, 301 transitions, 1958 flow [2022-11-20 12:00:58,156 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=1558, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1958, PETRI_PLACES=228, PETRI_TRANSITIONS=301} [2022-11-20 12:00:58,157 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 46 predicate places. [2022-11-20 12:00:58,157 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 301 transitions, 1958 flow [2022-11-20 12:00:58,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 151.9) internal successors, (1519), 10 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:58,158 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:00:58,159 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] [2022-11-20 12:00:58,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:00:58,159 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-20 12:00:58,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:00:58,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1514701539, now seen corresponding path program 3 times [2022-11-20 12:00:58,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:00:58,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827894208] [2022-11-20 12:00:58,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:00:58,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:00:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:59,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:00:59,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:00:59,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827894208] [2022-11-20 12:00:59,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827894208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:00:59,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:00:59,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 12:00:59,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807006575] [2022-11-20 12:00:59,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:00:59,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:00:59,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:00:59,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:00:59,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:00:59,234 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 274 [2022-11-20 12:00:59,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 301 transitions, 1958 flow. Second operand has 12 states, 12 states have (on average 135.83333333333334) internal successors, (1630), 12 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:59,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:00:59,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 274 [2022-11-20 12:00:59,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:01:05,253 INFO L130 PetriNetUnfolder]: 13882/23856 cut-off events. [2022-11-20 12:01:05,253 INFO L131 PetriNetUnfolder]: For 87082/87159 co-relation queries the response was YES. [2022-11-20 12:01:05,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91166 conditions, 23856 events. 13882/23856 cut-off events. For 87082/87159 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 169980 event pairs, 5122 based on Foata normal form. 273/22672 useless extension candidates. Maximal degree in co-relation 87628. Up to 12873 conditions per place. [2022-11-20 12:01:05,585 INFO L137 encePairwiseOnDemand]: 257/274 looper letters, 492 selfloop transitions, 117 changer transitions 0/683 dead transitions. [2022-11-20 12:01:05,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 683 transitions, 4826 flow [2022-11-20 12:01:05,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:01:05,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 12:01:05,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2424 transitions. [2022-11-20 12:01:05,594 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5897810218978102 [2022-11-20 12:01:05,594 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2424 transitions. [2022-11-20 12:01:05,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2424 transitions. [2022-11-20 12:01:05,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:01:05,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2424 transitions. [2022-11-20 12:01:05,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 161.6) internal successors, (2424), 15 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:05,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 274.0) internal successors, (4384), 16 states have internal predecessors, (4384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:05,611 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 274.0) internal successors, (4384), 16 states have internal predecessors, (4384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:05,612 INFO L175 Difference]: Start difference. First operand has 228 places, 301 transitions, 1958 flow. Second operand 15 states and 2424 transitions. [2022-11-20 12:01:05,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 683 transitions, 4826 flow [2022-11-20 12:01:06,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 683 transitions, 4729 flow, removed 38 selfloop flow, removed 2 redundant places. [2022-11-20 12:01:06,580 INFO L231 Difference]: Finished difference. Result has 252 places, 358 transitions, 3006 flow [2022-11-20 12:01:06,581 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=1912, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3006, PETRI_PLACES=252, PETRI_TRANSITIONS=358} [2022-11-20 12:01:06,582 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 70 predicate places. [2022-11-20 12:01:06,582 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 358 transitions, 3006 flow [2022-11-20 12:01:06,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 135.83333333333334) internal successors, (1630), 12 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:06,583 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:01:06,583 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] [2022-11-20 12:01:06,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:01:06,584 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-20 12:01:06,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:06,584 INFO L85 PathProgramCache]: Analyzing trace with hash -247823929, now seen corresponding path program 4 times [2022-11-20 12:01:06,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:06,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356092583] [2022-11-20 12:01:06,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:06,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:07,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:07,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:07,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356092583] [2022-11-20 12:01:07,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356092583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:01:07,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:01:07,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:01:07,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722638661] [2022-11-20 12:01:07,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:01:07,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:01:07,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:07,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:01:07,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:01:07,185 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 274 [2022-11-20 12:01:07,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 358 transitions, 3006 flow. Second operand has 10 states, 10 states have (on average 151.9) internal successors, (1519), 10 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:07,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:01:07,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 274 [2022-11-20 12:01:07,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:01:16,011 INFO L130 PetriNetUnfolder]: 19927/34595 cut-off events. [2022-11-20 12:01:16,012 INFO L131 PetriNetUnfolder]: For 191998/192121 co-relation queries the response was YES. [2022-11-20 12:01:16,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140098 conditions, 34595 events. 19927/34595 cut-off events. For 191998/192121 co-relation queries the response was YES. Maximal size of possible extension queue 1093. Compared 266827 event pairs, 9372 based on Foata normal form. 293/32638 useless extension candidates. Maximal degree in co-relation 139526. Up to 16091 conditions per place. [2022-11-20 12:01:16,703 INFO L137 encePairwiseOnDemand]: 260/274 looper letters, 530 selfloop transitions, 108 changer transitions 0/740 dead transitions. [2022-11-20 12:01:16,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 740 transitions, 6457 flow [2022-11-20 12:01:16,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:01:16,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 12:01:16,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2627 transitions. [2022-11-20 12:01:16,712 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6391727493917275 [2022-11-20 12:01:16,712 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2627 transitions. [2022-11-20 12:01:16,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2627 transitions. [2022-11-20 12:01:16,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:01:16,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2627 transitions. [2022-11-20 12:01:16,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 175.13333333333333) internal successors, (2627), 15 states have internal predecessors, (2627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:16,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 274.0) internal successors, (4384), 16 states have internal predecessors, (4384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:16,731 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 274.0) internal successors, (4384), 16 states have internal predecessors, (4384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:16,731 INFO L175 Difference]: Start difference. First operand has 252 places, 358 transitions, 3006 flow. Second operand 15 states and 2627 transitions. [2022-11-20 12:01:16,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 740 transitions, 6457 flow [2022-11-20 12:01:17,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 740 transitions, 6256 flow, removed 35 selfloop flow, removed 2 redundant places. [2022-11-20 12:01:17,804 INFO L231 Difference]: Finished difference. Result has 274 places, 410 transitions, 3980 flow [2022-11-20 12:01:17,804 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=2898, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3980, PETRI_PLACES=274, PETRI_TRANSITIONS=410} [2022-11-20 12:01:17,804 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 92 predicate places. [2022-11-20 12:01:17,805 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 410 transitions, 3980 flow [2022-11-20 12:01:17,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 151.9) internal successors, (1519), 10 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:17,806 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:01:17,806 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] [2022-11-20 12:01:17,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:01:17,806 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-20 12:01:17,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:17,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1496184487, now seen corresponding path program 5 times [2022-11-20 12:01:17,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:17,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664144661] [2022-11-20 12:01:17,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:17,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:18,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:18,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:18,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664144661] [2022-11-20 12:01:18,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664144661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:01:18,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:01:18,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 12:01:18,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350483611] [2022-11-20 12:01:18,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:01:18,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:01:18,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:18,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:01:18,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:01:18,637 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 274 [2022-11-20 12:01:18,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 410 transitions, 3980 flow. Second operand has 12 states, 12 states have (on average 135.83333333333334) internal successors, (1630), 12 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:18,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:01:18,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 274 [2022-11-20 12:01:18,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:01:31,228 INFO L130 PetriNetUnfolder]: 25833/44844 cut-off events. [2022-11-20 12:01:31,228 INFO L131 PetriNetUnfolder]: For 253563/253829 co-relation queries the response was YES. [2022-11-20 12:01:31,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186032 conditions, 44844 events. 25833/44844 cut-off events. For 253563/253829 co-relation queries the response was YES. Maximal size of possible extension queue 1406. Compared 361486 event pairs, 10723 based on Foata normal form. 388/42406 useless extension candidates. Maximal degree in co-relation 184429. Up to 20119 conditions per place. [2022-11-20 12:01:31,853 INFO L137 encePairwiseOnDemand]: 257/274 looper letters, 625 selfloop transitions, 184 changer transitions 0/883 dead transitions. [2022-11-20 12:01:31,853 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 883 transitions, 8148 flow [2022-11-20 12:01:31,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 12:01:31,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-20 12:01:31,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3163 transitions. [2022-11-20 12:01:31,863 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5771897810218978 [2022-11-20 12:01:31,863 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3163 transitions. [2022-11-20 12:01:31,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3163 transitions. [2022-11-20 12:01:31,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:01:31,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3163 transitions. [2022-11-20 12:01:32,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 158.15) internal successors, (3163), 20 states have internal predecessors, (3163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:32,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 274.0) internal successors, (5754), 21 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:32,170 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 274.0) internal successors, (5754), 21 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:32,170 INFO L175 Difference]: Start difference. First operand has 274 places, 410 transitions, 3980 flow. Second operand 20 states and 3163 transitions. [2022-11-20 12:01:32,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 883 transitions, 8148 flow [2022-11-20 12:01:36,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 883 transitions, 8081 flow, removed 33 selfloop flow, removed 1 redundant places. [2022-11-20 12:01:36,039 INFO L231 Difference]: Finished difference. Result has 308 places, 480 transitions, 5635 flow [2022-11-20 12:01:36,040 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=3925, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=5635, PETRI_PLACES=308, PETRI_TRANSITIONS=480} [2022-11-20 12:01:36,041 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 126 predicate places. [2022-11-20 12:01:36,041 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 480 transitions, 5635 flow [2022-11-20 12:01:36,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 135.83333333333334) internal successors, (1630), 12 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:36,042 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:01:36,042 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] [2022-11-20 12:01:36,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:01:36,043 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-20 12:01:36,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:36,044 INFO L85 PathProgramCache]: Analyzing trace with hash -180243206, now seen corresponding path program 1 times [2022-11-20 12:01:36,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:36,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331770564] [2022-11-20 12:01:36,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:36,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:36,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:36,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:36,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331770564] [2022-11-20 12:01:36,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331770564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:01:36,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:01:36,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:01:36,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216265999] [2022-11-20 12:01:36,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:01:36,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:01:36,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:36,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:01:36,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:01:36,689 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 274 [2022-11-20 12:01:36,690 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 480 transitions, 5635 flow. Second operand has 10 states, 10 states have (on average 151.9) internal successors, (1519), 10 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:36,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:01:36,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 274 [2022-11-20 12:01:36,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand