./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 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_1a74c0c3-129d-41b3-99fb-9a962ee04623/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a74c0c3-129d-41b3-99fb-9a962ee04623/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a74c0c3-129d-41b3-99fb-9a962ee04623/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a74c0c3-129d-41b3-99fb-9a962ee04623/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a74c0c3-129d-41b3-99fb-9a962ee04623/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a74c0c3-129d-41b3-99fb-9a962ee04623/bin/uautomizer-uyxdKDjOR8 --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 e7fe0631e7f950e2868c8cb954edca4f6de3fdffbf6debba58771511fbac2e8b --- 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-2329fc7 [2022-12-13 21:13:35,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:13:35,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:13:35,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:13:35,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:13:35,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:13:35,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:13:35,459 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:13:35,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:13:35,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:13:35,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:13:35,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:13:35,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:13:35,465 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:13:35,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:13:35,466 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:13:35,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:13:35,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:13:35,468 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:13:35,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:13:35,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:13:35,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:13:35,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:13:35,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:13:35,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:13:35,474 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:13:35,474 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:13:35,475 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:13:35,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:13:35,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:13:35,476 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:13:35,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:13:35,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:13:35,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:13:35,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:13:35,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:13:35,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:13:35,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:13:35,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:13:35,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:13:35,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:13:35,481 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a74c0c3-129d-41b3-99fb-9a962ee04623/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 21:13:35,494 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:13:35,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:13:35,495 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:13:35,495 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:13:35,495 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:13:35,500 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:13:35,501 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:13:35,501 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:13:35,501 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:13:35,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:13:35,502 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:13:35,502 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:13:35,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:13:35,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:13:35,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:13:35,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 21:13:35,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:13:35,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 21:13:35,503 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 21:13:35,503 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:13:35,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:13:35,503 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:13:35,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 21:13:35,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:13:35,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:13:35,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:13:35,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:13:35,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:13:35,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:13:35,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 21:13:35,504 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:13:35,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:13:35,504 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:13:35,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 21:13:35,505 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:13:35,505 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:13:35,505 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:13:35,505 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a74c0c3-129d-41b3-99fb-9a962ee04623/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a74c0c3-129d-41b3-99fb-9a962ee04623/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7fe0631e7f950e2868c8cb954edca4f6de3fdffbf6debba58771511fbac2e8b [2022-12-13 21:13:35,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:13:35,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:13:35,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:13:35,688 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:13:35,688 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:13:35,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a74c0c3-129d-41b3-99fb-9a962ee04623/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2022-12-13 21:13:38,245 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:13:38,457 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:13:38,458 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a74c0c3-129d-41b3-99fb-9a962ee04623/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2022-12-13 21:13:38,467 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a74c0c3-129d-41b3-99fb-9a962ee04623/bin/uautomizer-uyxdKDjOR8/data/7a75221a4/513939de542942aa848caa6044eff9ef/FLAG3e360d1a5 [2022-12-13 21:13:38,825 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a74c0c3-129d-41b3-99fb-9a962ee04623/bin/uautomizer-uyxdKDjOR8/data/7a75221a4/513939de542942aa848caa6044eff9ef [2022-12-13 21:13:38,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:13:38,828 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:13:38,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:13:38,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:13:38,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:13:38,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:13:38" (1/1) ... [2022-12-13 21:13:38,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53240b87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:38, skipping insertion in model container [2022-12-13 21:13:38,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:13:38" (1/1) ... [2022-12-13 21:13:38,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:13:38,861 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:13:39,058 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_1a74c0c3-129d-41b3-99fb-9a962ee04623/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i[30687,30700] [2022-12-13 21:13:39,061 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:13:39,068 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:13:39,102 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_1a74c0c3-129d-41b3-99fb-9a962ee04623/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i[30687,30700] [2022-12-13 21:13:39,103 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:13:39,123 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:13:39,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:39 WrapperNode [2022-12-13 21:13:39,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:13:39,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:13:39,124 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:13:39,124 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:13:39,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:39" (1/1) ... [2022-12-13 21:13:39,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:39" (1/1) ... [2022-12-13 21:13:39,160 INFO L138 Inliner]: procedures = 170, calls = 35, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 195 [2022-12-13 21:13:39,160 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:13:39,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:13:39,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:13:39,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:13:39,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:39" (1/1) ... [2022-12-13 21:13:39,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:39" (1/1) ... [2022-12-13 21:13:39,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:39" (1/1) ... [2022-12-13 21:13:39,171 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:39" (1/1) ... [2022-12-13 21:13:39,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:39" (1/1) ... [2022-12-13 21:13:39,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:39" (1/1) ... [2022-12-13 21:13:39,184 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:39" (1/1) ... [2022-12-13 21:13:39,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:39" (1/1) ... [2022-12-13 21:13:39,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:13:39,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:13:39,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:13:39,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:13:39,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:39" (1/1) ... [2022-12-13 21:13:39,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:13:39,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a74c0c3-129d-41b3-99fb-9a962ee04623/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:13:39,212 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a74c0c3-129d-41b3-99fb-9a962ee04623/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:13:39,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a74c0c3-129d-41b3-99fb-9a962ee04623/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:13:39,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 21:13:39,238 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-12-13 21:13:39,238 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-12-13 21:13:39,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 21:13:39,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:13:39,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 21:13:39,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:13:39,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 21:13:39,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:13:39,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:13:39,240 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 21:13:39,346 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:13:39,348 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:13:39,691 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:13:39,822 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:13:39,822 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 21:13:39,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:13:39 BoogieIcfgContainer [2022-12-13 21:13:39,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:13:39,827 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:13:39,827 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:13:39,830 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:13:39,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:13:38" (1/3) ... [2022-12-13 21:13:39,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e822637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:13:39, skipping insertion in model container [2022-12-13 21:13:39,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:39" (2/3) ... [2022-12-13 21:13:39,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e822637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:13:39, skipping insertion in model container [2022-12-13 21:13:39,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:13:39" (3/3) ... [2022-12-13 21:13:39,832 INFO L112 eAbstractionObserver]: Analyzing ICFG 36_stack_cas_p0_vs_concur.i [2022-12-13 21:13:39,841 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 21:13:39,851 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:13:39,851 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2022-12-13 21:13:39,851 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 21:13:39,923 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 21:13:39,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 158 transitions, 321 flow [2022-12-13 21:13:40,015 INFO L130 PetriNetUnfolder]: 10/169 cut-off events. [2022-12-13 21:13:40,015 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:13:40,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 169 events. 10/169 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 167 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 138. Up to 4 conditions per place. [2022-12-13 21:13:40,021 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 158 transitions, 321 flow [2022-12-13 21:13:40,026 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 152 places, 158 transitions, 321 flow [2022-12-13 21:13:40,029 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:13:40,039 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 158 transitions, 321 flow [2022-12-13 21:13:40,051 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 158 transitions, 321 flow [2022-12-13 21:13:40,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 158 transitions, 321 flow [2022-12-13 21:13:40,078 INFO L130 PetriNetUnfolder]: 10/169 cut-off events. [2022-12-13 21:13:40,079 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:13:40,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 169 events. 10/169 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 167 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 138. Up to 4 conditions per place. [2022-12-13 21:13:40,081 INFO L119 LiptonReduction]: Number of co-enabled transitions 3500 [2022-12-13 21:14:03,481 WARN L233 SmtUtils]: Spent 6.10s on a formula simplification. DAG size of input: 123 DAG size of output: 119 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 21:14:13,337 WARN L233 SmtUtils]: Spent 6.69s on a formula simplification. DAG size of input: 124 DAG size of output: 120 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 21:14:25,505 WARN L233 SmtUtils]: Spent 8.27s on a formula simplification. DAG size of input: 122 DAG size of output: 118 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 21:14:38,583 WARN L233 SmtUtils]: Spent 10.14s on a formula simplification. DAG size of input: 123 DAG size of output: 119 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 21:14:44,135 INFO L134 LiptonReduction]: Checked pairs total: 4965 [2022-12-13 21:14:44,136 INFO L136 LiptonReduction]: Total number of compositions: 184 [2022-12-13 21:14:44,145 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:14:44,148 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;@30e78cf9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:14:44,149 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2022-12-13 21:14:44,150 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2022-12-13 21:14:44,151 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:14:44,151 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:14:44,151 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 21:14:44,151 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2022-12-13 21:14:44,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:14:44,155 INFO L85 PathProgramCache]: Analyzing trace with hash 829202900, now seen corresponding path program 1 times [2022-12-13 21:14:44,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:14:44,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424639398] [2022-12-13 21:14:44,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:14:44,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:14:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:14:44,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:14:44,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:14:44,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424639398] [2022-12-13 21:14:44,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424639398] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:14:44,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:14:44,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:14:44,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917814465] [2022-12-13 21:14:44,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:14:44,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 21:14:44,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:14:44,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 21:14:44,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 21:14:44,299 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 342 [2022-12-13 21:14:44,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 46 transitions, 97 flow. Second operand has 2 states, 2 states have (on average 138.0) internal successors, (276), 2 states have internal predecessors, (276), 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) [2022-12-13 21:14:44,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:14:44,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 342 [2022-12-13 21:14:44,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:14:44,420 INFO L130 PetriNetUnfolder]: 42/102 cut-off events. [2022-12-13 21:14:44,420 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:14:44,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 102 events. 42/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 195 event pairs, 33 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 190. Up to 98 conditions per place. [2022-12-13 21:14:44,422 INFO L137 encePairwiseOnDemand]: 322/342 looper letters, 23 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2022-12-13 21:14:44,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 26 transitions, 103 flow [2022-12-13 21:14:44,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 21:14:44,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 21:14:44,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 315 transitions. [2022-12-13 21:14:44,432 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2022-12-13 21:14:44,433 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 315 transitions. [2022-12-13 21:14:44,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 315 transitions. [2022-12-13 21:14:44,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:14:44,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 315 transitions. [2022-12-13 21:14:44,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 157.5) internal successors, (315), 2 states have internal predecessors, (315), 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) [2022-12-13 21:14:44,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 342.0) internal successors, (1026), 3 states have internal predecessors, (1026), 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) [2022-12-13 21:14:44,443 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 342.0) internal successors, (1026), 3 states have internal predecessors, (1026), 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) [2022-12-13 21:14:44,444 INFO L175 Difference]: Start difference. First operand has 45 places, 46 transitions, 97 flow. Second operand 2 states and 315 transitions. [2022-12-13 21:14:44,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 26 transitions, 103 flow [2022-12-13 21:14:44,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 26 transitions, 103 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 21:14:44,448 INFO L231 Difference]: Finished difference. Result has 27 places, 26 transitions, 57 flow [2022-12-13 21:14:44,449 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=57, PETRI_PLACES=27, PETRI_TRANSITIONS=26} [2022-12-13 21:14:44,452 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, -18 predicate places. [2022-12-13 21:14:44,452 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 26 transitions, 57 flow [2022-12-13 21:14:44,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 138.0) internal successors, (276), 2 states have internal predecessors, (276), 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) [2022-12-13 21:14:44,453 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:14:44,453 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 21:14:44,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 21:14:44,453 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2022-12-13 21:14:44,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:14:44,454 INFO L85 PathProgramCache]: Analyzing trace with hash -64361840, now seen corresponding path program 1 times [2022-12-13 21:14:44,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:14:44,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044455929] [2022-12-13 21:14:44,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:14:44,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:14:44,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:14:44,477 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:14:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:14:44,505 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:14:44,505 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 21:14:44,507 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (38 of 39 remaining) [2022-12-13 21:14:44,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (37 of 39 remaining) [2022-12-13 21:14:44,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (36 of 39 remaining) [2022-12-13 21:14:44,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (35 of 39 remaining) [2022-12-13 21:14:44,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (34 of 39 remaining) [2022-12-13 21:14:44,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (33 of 39 remaining) [2022-12-13 21:14:44,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (32 of 39 remaining) [2022-12-13 21:14:44,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (31 of 39 remaining) [2022-12-13 21:14:44,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (30 of 39 remaining) [2022-12-13 21:14:44,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (29 of 39 remaining) [2022-12-13 21:14:44,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (28 of 39 remaining) [2022-12-13 21:14:44,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (27 of 39 remaining) [2022-12-13 21:14:44,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (26 of 39 remaining) [2022-12-13 21:14:44,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (25 of 39 remaining) [2022-12-13 21:14:44,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (24 of 39 remaining) [2022-12-13 21:14:44,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (23 of 39 remaining) [2022-12-13 21:14:44,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (22 of 39 remaining) [2022-12-13 21:14:44,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (21 of 39 remaining) [2022-12-13 21:14:44,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (20 of 39 remaining) [2022-12-13 21:14:44,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (19 of 39 remaining) [2022-12-13 21:14:44,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (18 of 39 remaining) [2022-12-13 21:14:44,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 39 remaining) [2022-12-13 21:14:44,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 39 remaining) [2022-12-13 21:14:44,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 39 remaining) [2022-12-13 21:14:44,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (14 of 39 remaining) [2022-12-13 21:14:44,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (13 of 39 remaining) [2022-12-13 21:14:44,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (12 of 39 remaining) [2022-12-13 21:14:44,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (11 of 39 remaining) [2022-12-13 21:14:44,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (10 of 39 remaining) [2022-12-13 21:14:44,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (9 of 39 remaining) [2022-12-13 21:14:44,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (8 of 39 remaining) [2022-12-13 21:14:44,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (7 of 39 remaining) [2022-12-13 21:14:44,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (6 of 39 remaining) [2022-12-13 21:14:44,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (5 of 39 remaining) [2022-12-13 21:14:44,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (4 of 39 remaining) [2022-12-13 21:14:44,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (3 of 39 remaining) [2022-12-13 21:14:44,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (2 of 39 remaining) [2022-12-13 21:14:44,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (1 of 39 remaining) [2022-12-13 21:14:44,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (0 of 39 remaining) [2022-12-13 21:14:44,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 21:14:44,517 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 21:14:44,520 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 21:14:44,520 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 21:14:44,575 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 21:14:44,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 284 transitions, 580 flow [2022-12-13 21:14:44,628 INFO L130 PetriNetUnfolder]: 19/308 cut-off events. [2022-12-13 21:14:44,628 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 21:14:44,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 308 events. 19/308 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 712 event pairs, 0 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 263. Up to 6 conditions per place. [2022-12-13 21:14:44,632 INFO L82 GeneralOperation]: Start removeDead. Operand has 272 places, 284 transitions, 580 flow [2022-12-13 21:14:44,635 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 272 places, 284 transitions, 580 flow [2022-12-13 21:14:44,635 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:14:44,635 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 272 places, 284 transitions, 580 flow [2022-12-13 21:14:44,635 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 272 places, 284 transitions, 580 flow [2022-12-13 21:14:44,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 284 transitions, 580 flow [2022-12-13 21:14:44,681 INFO L130 PetriNetUnfolder]: 19/308 cut-off events. [2022-12-13 21:14:44,681 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 21:14:44,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 308 events. 19/308 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 712 event pairs, 0 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 263. Up to 6 conditions per place. [2022-12-13 21:14:44,693 INFO L119 LiptonReduction]: Number of co-enabled transitions 38500 [2022-12-13 21:14:53,832 INFO L134 LiptonReduction]: Checked pairs total: 194280 [2022-12-13 21:14:53,833 INFO L136 LiptonReduction]: Total number of compositions: 140 [2022-12-13 21:14:53,835 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:14:53,835 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;@30e78cf9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:14:53,836 INFO L358 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2022-12-13 21:14:53,838 INFO L130 PetriNetUnfolder]: 0/12 cut-off events. [2022-12-13 21:14:53,838 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 21:14:53,838 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:14:53,838 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:14:53,838 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 54 more)] === [2022-12-13 21:14:53,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:14:53,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1418917785, now seen corresponding path program 1 times [2022-12-13 21:14:53,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:14:53,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291125525] [2022-12-13 21:14:53,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:14:53,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:14:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:14:53,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:14:53,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:14:53,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291125525] [2022-12-13 21:14:53,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291125525] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:14:53,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:14:53,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:14:53,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994878219] [2022-12-13 21:14:53,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:14:53,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 21:14:53,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:14:53,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 21:14:53,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 21:14:53,878 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 424 [2022-12-13 21:14:53,878 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 174 transitions, 360 flow. Second operand has 2 states, 2 states have (on average 244.5) internal successors, (489), 2 states have internal predecessors, (489), 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) [2022-12-13 21:14:53,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:14:53,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 424 [2022-12-13 21:14:53,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:14:54,502 INFO L130 PetriNetUnfolder]: 1312/4093 cut-off events. [2022-12-13 21:14:54,502 INFO L131 PetriNetUnfolder]: For 63/63 co-relation queries the response was YES. [2022-12-13 21:14:54,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6317 conditions, 4093 events. 1312/4093 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 32401 event pairs, 1148 based on Foata normal form. 159/3875 useless extension candidates. Maximal degree in co-relation 4805. Up to 2149 conditions per place. [2022-12-13 21:14:54,526 INFO L137 encePairwiseOnDemand]: 395/424 looper letters, 44 selfloop transitions, 0 changer transitions 0/140 dead transitions. [2022-12-13 21:14:54,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 140 transitions, 380 flow [2022-12-13 21:14:54,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 21:14:54,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 21:14:54,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 557 transitions. [2022-12-13 21:14:54,530 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6568396226415094 [2022-12-13 21:14:54,530 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 557 transitions. [2022-12-13 21:14:54,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 557 transitions. [2022-12-13 21:14:54,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:14:54,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 557 transitions. [2022-12-13 21:14:54,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 278.5) internal successors, (557), 2 states have internal predecessors, (557), 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) [2022-12-13 21:14:54,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 424.0) internal successors, (1272), 3 states have internal predecessors, (1272), 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) [2022-12-13 21:14:54,537 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 424.0) internal successors, (1272), 3 states have internal predecessors, (1272), 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) [2022-12-13 21:14:54,537 INFO L175 Difference]: Start difference. First operand has 169 places, 174 transitions, 360 flow. Second operand 2 states and 557 transitions. [2022-12-13 21:14:54,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 140 transitions, 380 flow [2022-12-13 21:14:54,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 140 transitions, 378 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-12-13 21:14:54,540 INFO L231 Difference]: Finished difference. Result has 142 places, 140 transitions, 290 flow [2022-12-13 21:14:54,541 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=290, PETRI_PLACES=142, PETRI_TRANSITIONS=140} [2022-12-13 21:14:54,541 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, -27 predicate places. [2022-12-13 21:14:54,542 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 140 transitions, 290 flow [2022-12-13 21:14:54,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 244.5) internal successors, (489), 2 states have internal predecessors, (489), 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) [2022-12-13 21:14:54,542 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:14:54,542 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 21:14:54,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 21:14:54,543 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 54 more)] === [2022-12-13 21:14:54,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:14:54,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1837317266, now seen corresponding path program 1 times [2022-12-13 21:14:54,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:14:54,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541582813] [2022-12-13 21:14:54,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:14:54,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:14:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:14:54,559 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:14:54,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:14:54,574 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:14:54,574 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 21:14:54,574 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (57 of 58 remaining) [2022-12-13 21:14:54,574 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (56 of 58 remaining) [2022-12-13 21:14:54,575 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (55 of 58 remaining) [2022-12-13 21:14:54,575 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (54 of 58 remaining) [2022-12-13 21:14:54,575 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (53 of 58 remaining) [2022-12-13 21:14:54,575 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (52 of 58 remaining) [2022-12-13 21:14:54,575 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (51 of 58 remaining) [2022-12-13 21:14:54,575 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (50 of 58 remaining) [2022-12-13 21:14:54,576 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (49 of 58 remaining) [2022-12-13 21:14:54,576 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (48 of 58 remaining) [2022-12-13 21:14:54,576 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (47 of 58 remaining) [2022-12-13 21:14:54,576 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (46 of 58 remaining) [2022-12-13 21:14:54,576 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (45 of 58 remaining) [2022-12-13 21:14:54,576 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (44 of 58 remaining) [2022-12-13 21:14:54,576 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (43 of 58 remaining) [2022-12-13 21:14:54,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (42 of 58 remaining) [2022-12-13 21:14:54,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (41 of 58 remaining) [2022-12-13 21:14:54,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (40 of 58 remaining) [2022-12-13 21:14:54,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (39 of 58 remaining) [2022-12-13 21:14:54,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (38 of 58 remaining) [2022-12-13 21:14:54,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (37 of 58 remaining) [2022-12-13 21:14:54,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (36 of 58 remaining) [2022-12-13 21:14:54,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (35 of 58 remaining) [2022-12-13 21:14:54,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (34 of 58 remaining) [2022-12-13 21:14:54,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (33 of 58 remaining) [2022-12-13 21:14:54,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (32 of 58 remaining) [2022-12-13 21:14:54,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (31 of 58 remaining) [2022-12-13 21:14:54,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (30 of 58 remaining) [2022-12-13 21:14:54,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (29 of 58 remaining) [2022-12-13 21:14:54,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (28 of 58 remaining) [2022-12-13 21:14:54,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (27 of 58 remaining) [2022-12-13 21:14:54,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (26 of 58 remaining) [2022-12-13 21:14:54,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (25 of 58 remaining) [2022-12-13 21:14:54,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (24 of 58 remaining) [2022-12-13 21:14:54,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (23 of 58 remaining) [2022-12-13 21:14:54,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (22 of 58 remaining) [2022-12-13 21:14:54,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (21 of 58 remaining) [2022-12-13 21:14:54,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (20 of 58 remaining) [2022-12-13 21:14:54,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (19 of 58 remaining) [2022-12-13 21:14:54,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (18 of 58 remaining) [2022-12-13 21:14:54,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 58 remaining) [2022-12-13 21:14:54,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 58 remaining) [2022-12-13 21:14:54,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 58 remaining) [2022-12-13 21:14:54,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (14 of 58 remaining) [2022-12-13 21:14:54,581 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (13 of 58 remaining) [2022-12-13 21:14:54,581 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (12 of 58 remaining) [2022-12-13 21:14:54,581 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (11 of 58 remaining) [2022-12-13 21:14:54,581 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (10 of 58 remaining) [2022-12-13 21:14:54,581 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (9 of 58 remaining) [2022-12-13 21:14:54,581 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (8 of 58 remaining) [2022-12-13 21:14:54,582 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (7 of 58 remaining) [2022-12-13 21:14:54,582 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (6 of 58 remaining) [2022-12-13 21:14:54,582 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (5 of 58 remaining) [2022-12-13 21:14:54,582 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (4 of 58 remaining) [2022-12-13 21:14:54,582 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (3 of 58 remaining) [2022-12-13 21:14:54,582 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (2 of 58 remaining) [2022-12-13 21:14:54,582 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (1 of 58 remaining) [2022-12-13 21:14:54,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (0 of 58 remaining) [2022-12-13 21:14:54,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 21:14:54,583 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 21:14:54,584 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 21:14:54,584 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 21:14:54,650 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 21:14:54,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 392 places, 410 transitions, 841 flow [2022-12-13 21:14:54,748 INFO L130 PetriNetUnfolder]: 28/447 cut-off events. [2022-12-13 21:14:54,748 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 21:14:54,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 447 events. 28/447 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1473 event pairs, 0 based on Foata normal form. 0/358 useless extension candidates. Maximal degree in co-relation 388. Up to 8 conditions per place. [2022-12-13 21:14:54,752 INFO L82 GeneralOperation]: Start removeDead. Operand has 392 places, 410 transitions, 841 flow [2022-12-13 21:14:54,756 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 392 places, 410 transitions, 841 flow [2022-12-13 21:14:54,756 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:14:54,757 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 392 places, 410 transitions, 841 flow [2022-12-13 21:14:54,757 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 392 places, 410 transitions, 841 flow [2022-12-13 21:14:54,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 392 places, 410 transitions, 841 flow [2022-12-13 21:14:54,826 INFO L130 PetriNetUnfolder]: 28/447 cut-off events. [2022-12-13 21:14:54,827 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 21:14:54,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 447 events. 28/447 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1473 event pairs, 0 based on Foata normal form. 0/358 useless extension candidates. Maximal degree in co-relation 388. Up to 8 conditions per place. [2022-12-13 21:14:54,855 INFO L119 LiptonReduction]: Number of co-enabled transitions 105000 [2022-12-13 21:15:04,927 INFO L134 LiptonReduction]: Checked pairs total: 638617 [2022-12-13 21:15:04,927 INFO L136 LiptonReduction]: Total number of compositions: 194 [2022-12-13 21:15:04,929 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:15:04,929 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;@30e78cf9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:15:04,929 INFO L358 AbstractCegarLoop]: Starting to check reachability of 77 error locations. [2022-12-13 21:15:04,931 INFO L130 PetriNetUnfolder]: 0/13 cut-off events. [2022-12-13 21:15:04,931 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 21:15:04,931 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:15:04,932 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:15:04,932 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 73 more)] === [2022-12-13 21:15:04,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:15:04,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1849159402, now seen corresponding path program 1 times [2022-12-13 21:15:04,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:15:04,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125877142] [2022-12-13 21:15:04,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:15:04,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:15:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:15:04,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:15:04,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:15:04,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125877142] [2022-12-13 21:15:04,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125877142] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:15:04,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:15:04,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:15:04,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146178713] [2022-12-13 21:15:04,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:15:04,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 21:15:04,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:15:04,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 21:15:04,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 21:15:04,964 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 348 out of 604 [2022-12-13 21:15:04,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 256 transitions, 533 flow. Second operand has 2 states, 2 states have (on average 350.5) internal successors, (701), 2 states have internal predecessors, (701), 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) [2022-12-13 21:15:04,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:15:04,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 348 of 604 [2022-12-13 21:15:04,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:15:15,782 INFO L130 PetriNetUnfolder]: 45177/98732 cut-off events. [2022-12-13 21:15:15,782 INFO L131 PetriNetUnfolder]: For 2389/2389 co-relation queries the response was YES. [2022-12-13 21:15:15,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162211 conditions, 98732 events. 45177/98732 cut-off events. For 2389/2389 co-relation queries the response was YES. Maximal size of possible extension queue 1541. Compared 1104272 event pairs, 38685 based on Foata normal form. 1819/91770 useless extension candidates. Maximal degree in co-relation 96047. Up to 61823 conditions per place. [2022-12-13 21:15:16,395 INFO L137 encePairwiseOnDemand]: 563/604 looper letters, 67 selfloop transitions, 0 changer transitions 0/208 dead transitions. [2022-12-13 21:15:16,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 208 transitions, 571 flow [2022-12-13 21:15:16,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 21:15:16,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 21:15:16,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 804 transitions. [2022-12-13 21:15:16,399 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6655629139072847 [2022-12-13 21:15:16,399 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 804 transitions. [2022-12-13 21:15:16,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 804 transitions. [2022-12-13 21:15:16,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:15:16,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 804 transitions. [2022-12-13 21:15:16,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 402.0) internal successors, (804), 2 states have internal predecessors, (804), 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) [2022-12-13 21:15:16,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 604.0) internal successors, (1812), 3 states have internal predecessors, (1812), 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) [2022-12-13 21:15:16,409 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 604.0) internal successors, (1812), 3 states have internal predecessors, (1812), 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) [2022-12-13 21:15:16,410 INFO L175 Difference]: Start difference. First operand has 248 places, 256 transitions, 533 flow. Second operand 2 states and 804 transitions. [2022-12-13 21:15:16,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 208 transitions, 571 flow [2022-12-13 21:15:16,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 208 transitions, 565 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-12-13 21:15:16,417 INFO L231 Difference]: Finished difference. Result has 208 places, 208 transitions, 431 flow [2022-12-13 21:15:16,418 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=604, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=431, PETRI_PLACES=208, PETRI_TRANSITIONS=208} [2022-12-13 21:15:16,419 INFO L288 CegarLoopForPetriNet]: 248 programPoint places, -40 predicate places. [2022-12-13 21:15:16,419 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 208 transitions, 431 flow [2022-12-13 21:15:16,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 350.5) internal successors, (701), 2 states have internal predecessors, (701), 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) [2022-12-13 21:15:16,419 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:15:16,420 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:15:16,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 21:15:16,420 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 73 more)] === [2022-12-13 21:15:16,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:15:16,420 INFO L85 PathProgramCache]: Analyzing trace with hash 56134867, now seen corresponding path program 1 times [2022-12-13 21:15:16,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:15:16,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362674211] [2022-12-13 21:15:16,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:15:16,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:15:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:15:16,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:15:16,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:15:16,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362674211] [2022-12-13 21:15:16,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362674211] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:15:16,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:15:16,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:15:16,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127505821] [2022-12-13 21:15:16,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:15:16,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:15:16,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:15:16,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:15:16,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:15:17,586 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 604 [2022-12-13 21:15:17,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 208 transitions, 431 flow. Second operand has 6 states, 6 states have (on average 321.6666666666667) internal successors, (1930), 6 states have internal predecessors, (1930), 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) [2022-12-13 21:15:17,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:15:17,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 604 [2022-12-13 21:15:17,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:15:48,934 INFO L130 PetriNetUnfolder]: 174267/325027 cut-off events. [2022-12-13 21:15:48,934 INFO L131 PetriNetUnfolder]: For 4505/4505 co-relation queries the response was YES. [2022-12-13 21:15:49,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 569500 conditions, 325027 events. 174267/325027 cut-off events. For 4505/4505 co-relation queries the response was YES. Maximal size of possible extension queue 4926. Compared 3747435 event pairs, 57662 based on Foata normal form. 0/298206 useless extension candidates. Maximal degree in co-relation 569494. Up to 127023 conditions per place. [2022-12-13 21:15:50,679 INFO L137 encePairwiseOnDemand]: 574/604 looper letters, 264 selfloop transitions, 38 changer transitions 0/420 dead transitions. [2022-12-13 21:15:50,679 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 420 transitions, 1499 flow [2022-12-13 21:15:50,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:15:50,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 21:15:50,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2226 transitions. [2022-12-13 21:15:50,684 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6142384105960265 [2022-12-13 21:15:50,684 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2226 transitions. [2022-12-13 21:15:50,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2226 transitions. [2022-12-13 21:15:50,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:15:50,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2226 transitions. [2022-12-13 21:15:50,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 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) [2022-12-13 21:15:50,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 604.0) internal successors, (4228), 7 states have internal predecessors, (4228), 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) [2022-12-13 21:15:50,694 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 604.0) internal successors, (4228), 7 states have internal predecessors, (4228), 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) [2022-12-13 21:15:50,694 INFO L175 Difference]: Start difference. First operand has 208 places, 208 transitions, 431 flow. Second operand 6 states and 2226 transitions. [2022-12-13 21:15:50,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 420 transitions, 1499 flow [2022-12-13 21:15:50,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 420 transitions, 1499 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 21:15:50,702 INFO L231 Difference]: Finished difference. Result has 218 places, 245 transitions, 715 flow [2022-12-13 21:15:50,702 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=604, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=715, PETRI_PLACES=218, PETRI_TRANSITIONS=245} [2022-12-13 21:15:50,703 INFO L288 CegarLoopForPetriNet]: 248 programPoint places, -30 predicate places. [2022-12-13 21:15:50,703 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 245 transitions, 715 flow [2022-12-13 21:15:50,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 321.6666666666667) internal successors, (1930), 6 states have internal predecessors, (1930), 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) [2022-12-13 21:15:50,704 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:15:50,704 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-13 21:15:50,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 21:15:50,704 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 73 more)] === [2022-12-13 21:15:50,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:15:50,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1540343037, now seen corresponding path program 1 times [2022-12-13 21:15:50,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:15:50,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137042788] [2022-12-13 21:15:50,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:15:50,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:15:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:15:50,714 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:15:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:15:50,723 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:15:50,723 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 21:15:50,723 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (76 of 77 remaining) [2022-12-13 21:15:50,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (75 of 77 remaining) [2022-12-13 21:15:50,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (74 of 77 remaining) [2022-12-13 21:15:50,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (73 of 77 remaining) [2022-12-13 21:15:50,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (72 of 77 remaining) [2022-12-13 21:15:50,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (71 of 77 remaining) [2022-12-13 21:15:50,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (70 of 77 remaining) [2022-12-13 21:15:50,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (69 of 77 remaining) [2022-12-13 21:15:50,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (68 of 77 remaining) [2022-12-13 21:15:50,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (67 of 77 remaining) [2022-12-13 21:15:50,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (66 of 77 remaining) [2022-12-13 21:15:50,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (65 of 77 remaining) [2022-12-13 21:15:50,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (64 of 77 remaining) [2022-12-13 21:15:50,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (63 of 77 remaining) [2022-12-13 21:15:50,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (62 of 77 remaining) [2022-12-13 21:15:50,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (61 of 77 remaining) [2022-12-13 21:15:50,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (60 of 77 remaining) [2022-12-13 21:15:50,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (59 of 77 remaining) [2022-12-13 21:15:50,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (58 of 77 remaining) [2022-12-13 21:15:50,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (57 of 77 remaining) [2022-12-13 21:15:50,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (56 of 77 remaining) [2022-12-13 21:15:50,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (55 of 77 remaining) [2022-12-13 21:15:50,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (54 of 77 remaining) [2022-12-13 21:15:50,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (53 of 77 remaining) [2022-12-13 21:15:50,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (52 of 77 remaining) [2022-12-13 21:15:50,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (51 of 77 remaining) [2022-12-13 21:15:50,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (50 of 77 remaining) [2022-12-13 21:15:50,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (49 of 77 remaining) [2022-12-13 21:15:50,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (48 of 77 remaining) [2022-12-13 21:15:50,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (47 of 77 remaining) [2022-12-13 21:15:50,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (46 of 77 remaining) [2022-12-13 21:15:50,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (45 of 77 remaining) [2022-12-13 21:15:50,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (44 of 77 remaining) [2022-12-13 21:15:50,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (43 of 77 remaining) [2022-12-13 21:15:50,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (42 of 77 remaining) [2022-12-13 21:15:50,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (41 of 77 remaining) [2022-12-13 21:15:50,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (40 of 77 remaining) [2022-12-13 21:15:50,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (39 of 77 remaining) [2022-12-13 21:15:50,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (38 of 77 remaining) [2022-12-13 21:15:50,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (37 of 77 remaining) [2022-12-13 21:15:50,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (36 of 77 remaining) [2022-12-13 21:15:50,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (35 of 77 remaining) [2022-12-13 21:15:50,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (34 of 77 remaining) [2022-12-13 21:15:50,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (33 of 77 remaining) [2022-12-13 21:15:50,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (32 of 77 remaining) [2022-12-13 21:15:50,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (31 of 77 remaining) [2022-12-13 21:15:50,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (30 of 77 remaining) [2022-12-13 21:15:50,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (29 of 77 remaining) [2022-12-13 21:15:50,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (28 of 77 remaining) [2022-12-13 21:15:50,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (27 of 77 remaining) [2022-12-13 21:15:50,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (26 of 77 remaining) [2022-12-13 21:15:50,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (25 of 77 remaining) [2022-12-13 21:15:50,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (24 of 77 remaining) [2022-12-13 21:15:50,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (23 of 77 remaining) [2022-12-13 21:15:50,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (22 of 77 remaining) [2022-12-13 21:15:50,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (21 of 77 remaining) [2022-12-13 21:15:50,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (20 of 77 remaining) [2022-12-13 21:15:50,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (19 of 77 remaining) [2022-12-13 21:15:50,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (18 of 77 remaining) [2022-12-13 21:15:50,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 77 remaining) [2022-12-13 21:15:50,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 77 remaining) [2022-12-13 21:15:50,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 77 remaining) [2022-12-13 21:15:50,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (14 of 77 remaining) [2022-12-13 21:15:50,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (13 of 77 remaining) [2022-12-13 21:15:50,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (12 of 77 remaining) [2022-12-13 21:15:50,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (11 of 77 remaining) [2022-12-13 21:15:50,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (10 of 77 remaining) [2022-12-13 21:15:50,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (9 of 77 remaining) [2022-12-13 21:15:50,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (8 of 77 remaining) [2022-12-13 21:15:50,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (7 of 77 remaining) [2022-12-13 21:15:50,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (6 of 77 remaining) [2022-12-13 21:15:50,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (5 of 77 remaining) [2022-12-13 21:15:50,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (4 of 77 remaining) [2022-12-13 21:15:50,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (3 of 77 remaining) [2022-12-13 21:15:50,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (2 of 77 remaining) [2022-12-13 21:15:50,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (1 of 77 remaining) [2022-12-13 21:15:50,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (0 of 77 remaining) [2022-12-13 21:15:50,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 21:15:50,729 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-13 21:15:50,730 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 21:15:50,730 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-13 21:15:50,805 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 21:15:50,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 512 places, 536 transitions, 1104 flow [2022-12-13 21:15:50,914 INFO L130 PetriNetUnfolder]: 37/586 cut-off events. [2022-12-13 21:15:50,914 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 21:15:50,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 609 conditions, 586 events. 37/586 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2301 event pairs, 0 based on Foata normal form. 0/468 useless extension candidates. Maximal degree in co-relation 513. Up to 10 conditions per place. [2022-12-13 21:15:50,921 INFO L82 GeneralOperation]: Start removeDead. Operand has 512 places, 536 transitions, 1104 flow [2022-12-13 21:15:50,928 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 512 places, 536 transitions, 1104 flow [2022-12-13 21:15:50,928 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:15:50,928 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 512 places, 536 transitions, 1104 flow [2022-12-13 21:15:50,928 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 512 places, 536 transitions, 1104 flow [2022-12-13 21:15:50,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 512 places, 536 transitions, 1104 flow [2022-12-13 21:15:51,033 INFO L130 PetriNetUnfolder]: 37/586 cut-off events. [2022-12-13 21:15:51,033 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 21:15:51,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 609 conditions, 586 events. 37/586 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2301 event pairs, 0 based on Foata normal form. 0/468 useless extension candidates. Maximal degree in co-relation 513. Up to 10 conditions per place. [2022-12-13 21:15:51,203 INFO L119 LiptonReduction]: Number of co-enabled transitions 203000 [2022-12-13 21:15:53,686 INFO L134 LiptonReduction]: Checked pairs total: 1222957 [2022-12-13 21:15:53,686 INFO L136 LiptonReduction]: Total number of compositions: 240 [2022-12-13 21:15:53,688 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:15:53,688 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;@30e78cf9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:15:53,688 INFO L358 AbstractCegarLoop]: Starting to check reachability of 96 error locations. [2022-12-13 21:15:53,689 INFO L130 PetriNetUnfolder]: 0/13 cut-off events. [2022-12-13 21:15:53,689 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 21:15:53,689 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:15:53,689 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:15:53,689 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 92 more)] === [2022-12-13 21:15:53,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:15:53,690 INFO L85 PathProgramCache]: Analyzing trace with hash 260048118, now seen corresponding path program 1 times [2022-12-13 21:15:53,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:15:53,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966675472] [2022-12-13 21:15:53,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:15:53,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:15:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:15:53,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:15:53,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:15:53,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966675472] [2022-12-13 21:15:53,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966675472] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:15:53,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:15:53,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:15:53,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497810975] [2022-12-13 21:15:53,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:15:53,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 21:15:53,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:15:53,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 21:15:53,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 21:15:53,702 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 454 out of 776 [2022-12-13 21:15:53,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 334 transitions, 700 flow. Second operand has 2 states, 2 states have (on average 456.5) internal successors, (913), 2 states have internal predecessors, (913), 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) [2022-12-13 21:15:53,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:15:53,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 454 of 776 [2022-12-13 21:15:53,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand