./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_84-list2_racing2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_2fd0aef3-4255-45c0-b3f1-273f593fdc7b/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd0aef3-4255-45c0-b3f1-273f593fdc7b/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd0aef3-4255-45c0-b3f1-273f593fdc7b/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd0aef3-4255-45c0-b3f1-273f593fdc7b/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_84-list2_racing2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd0aef3-4255-45c0-b3f1-273f593fdc7b/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd0aef3-4255-45c0-b3f1-273f593fdc7b/bin/uautomizer-verify-zZY32mL2XJ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f70125267ee7251a74a40ef1ba0ea3ced14d0fe45e7a9ea5a666e1eecab0c01c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:30:59,611 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:30:59,677 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd0aef3-4255-45c0-b3f1-273f593fdc7b/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 22:30:59,683 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:30:59,684 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:30:59,709 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:30:59,710 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:30:59,710 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:30:59,711 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:30:59,712 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:30:59,715 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:30:59,716 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:30:59,717 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:30:59,720 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:30:59,720 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:30:59,721 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:30:59,722 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:30:59,726 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:30:59,727 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:30:59,727 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:30:59,728 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:30:59,728 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:30:59,729 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:30:59,729 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:30:59,730 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:30:59,730 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:30:59,731 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:30:59,731 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:30:59,732 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:30:59,732 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:30:59,733 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:30:59,734 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:30:59,735 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:30:59,735 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:30:59,735 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:30:59,736 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:30:59,736 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:30:59,736 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:30:59,737 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:30:59,737 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:30:59,737 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:30:59,738 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:30:59,739 INFO L153 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_2fd0aef3-4255-45c0-b3f1-273f593fdc7b/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd0aef3-4255-45c0-b3f1-273f593fdc7b/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f70125267ee7251a74a40ef1ba0ea3ced14d0fe45e7a9ea5a666e1eecab0c01c [2023-11-23 22:31:00,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:31:00,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:31:00,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:31:00,090 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:31:00,092 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:31:00,093 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd0aef3-4255-45c0-b3f1-273f593fdc7b/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/goblint-regression/28-race_reach_84-list2_racing2.i [2023-11-23 22:31:03,280 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:31:03,732 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:31:03,734 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd0aef3-4255-45c0-b3f1-273f593fdc7b/sv-benchmarks/c/goblint-regression/28-race_reach_84-list2_racing2.i [2023-11-23 22:31:03,761 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd0aef3-4255-45c0-b3f1-273f593fdc7b/bin/uautomizer-verify-zZY32mL2XJ/data/ae0fd09f6/a1c3bed642d64356b6715d2ce5e28182/FLAG3cc84b72f [2023-11-23 22:31:03,778 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd0aef3-4255-45c0-b3f1-273f593fdc7b/bin/uautomizer-verify-zZY32mL2XJ/data/ae0fd09f6/a1c3bed642d64356b6715d2ce5e28182 [2023-11-23 22:31:03,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:31:03,788 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:31:03,792 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:31:03,792 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:31:03,798 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:31:03,799 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:31:03" (1/1) ... [2023-11-23 22:31:03,800 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5742f38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:31:03, skipping insertion in model container [2023-11-23 22:31:03,801 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:31:03" (1/1) ... [2023-11-23 22:31:03,873 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:31:04,523 WARN L240 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_2fd0aef3-4255-45c0-b3f1-273f593fdc7b/sv-benchmarks/c/goblint-regression/28-race_reach_84-list2_racing2.i[47038,47051] [2023-11-23 22:31:04,602 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:31:04,658 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:31:04,733 WARN L240 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_2fd0aef3-4255-45c0-b3f1-273f593fdc7b/sv-benchmarks/c/goblint-regression/28-race_reach_84-list2_racing2.i[47038,47051] [2023-11-23 22:31:04,784 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:31:04,864 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:31:04,865 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:31:04 WrapperNode [2023-11-23 22:31:04,865 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:31:04,866 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:31:04,866 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:31:04,866 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:31:04,875 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:31:04" (1/1) ... [2023-11-23 22:31:04,898 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:31:04" (1/1) ... [2023-11-23 22:31:04,948 INFO L138 Inliner]: procedures = 280, calls = 98, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 428 [2023-11-23 22:31:04,949 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:31:04,950 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:31:04,950 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:31:04,950 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:31:04,963 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:31:04" (1/1) ... [2023-11-23 22:31:04,963 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:31:04" (1/1) ... [2023-11-23 22:31:04,971 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:31:04" (1/1) ... [2023-11-23 22:31:05,011 INFO L189 HeapSplitter]: Split 56 memory accesses to 9 slices as follows [2, 2, 5, 5, 5, 5, 28, 2, 2] [2023-11-23 22:31:05,012 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:31:04" (1/1) ... [2023-11-23 22:31:05,012 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:31:04" (1/1) ... [2023-11-23 22:31:05,044 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:31:04" (1/1) ... [2023-11-23 22:31:05,050 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:31:04" (1/1) ... [2023-11-23 22:31:05,055 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:31:04" (1/1) ... [2023-11-23 22:31:05,059 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:31:04" (1/1) ... [2023-11-23 22:31:05,068 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:31:05,069 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:31:05,069 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:31:05,069 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:31:05,070 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:31:04" (1/1) ... [2023-11-23 22:31:05,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:31:05,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd0aef3-4255-45c0-b3f1-273f593fdc7b/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:31:05,111 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd0aef3-4255-45c0-b3f1-273f593fdc7b/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:31:05,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd0aef3-4255-45c0-b3f1-273f593fdc7b/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:31:05,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 22:31:05,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 22:31:05,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 22:31:05,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 22:31:05,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 22:31:05,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 22:31:05,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-23 22:31:05,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-23 22:31:05,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-23 22:31:05,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-11-23 22:31:05,190 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-23 22:31:05,190 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-23 22:31:05,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 22:31:05,190 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-23 22:31:05,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 22:31:05,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 22:31:05,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 22:31:05,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 22:31:05,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 22:31:05,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 22:31:05,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-23 22:31:05,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-23 22:31:05,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-23 22:31:05,191 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-23 22:31:05,192 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-23 22:31:05,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 22:31:05,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 22:31:05,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 22:31:05,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 22:31:05,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 22:31:05,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 22:31:05,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-23 22:31:05,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-23 22:31:05,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-23 22:31:05,194 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-23 22:31:05,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 22:31:05,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:31:05,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 22:31:05,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 22:31:05,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 22:31:05,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 22:31:05,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 22:31:05,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-23 22:31:05,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-23 22:31:05,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-23 22:31:05,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-11-23 22:31:05,196 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-11-23 22:31:05,196 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-11-23 22:31:05,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:31:05,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 22:31:05,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 22:31:05,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 22:31:05,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 22:31:05,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 22:31:05,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-23 22:31:05,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-23 22:31:05,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-23 22:31:05,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:31:05,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:31:05,200 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 22:31:05,438 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:31:05,441 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:31:06,307 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:31:06,715 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:31:06,715 INFO L309 CfgBuilder]: Removed 29 assume(true) statements. [2023-11-23 22:31:06,716 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:31:06 BoogieIcfgContainer [2023-11-23 22:31:06,716 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:31:06,720 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:31:06,720 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:31:06,724 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:31:06,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:31:03" (1/3) ... [2023-11-23 22:31:06,726 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af0fd8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:31:06, skipping insertion in model container [2023-11-23 22:31:06,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:31:04" (2/3) ... [2023-11-23 22:31:06,729 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af0fd8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:31:06, skipping insertion in model container [2023-11-23 22:31:06,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:31:06" (3/3) ... [2023-11-23 22:31:06,731 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_84-list2_racing2.i [2023-11-23 22:31:06,746 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 22:31:06,757 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:31:06,758 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-23 22:31:06,758 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 22:31:06,890 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-11-23 22:31:06,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 149 transitions, 337 flow [2023-11-23 22:31:07,174 INFO L124 PetriNetUnfolderBase]: 136/550 cut-off events. [2023-11-23 22:31:07,174 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-11-23 22:31:07,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 604 conditions, 550 events. 136/550 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3388 event pairs, 0 based on Foata normal form. 0/406 useless extension candidates. Maximal degree in co-relation 287. Up to 16 conditions per place. [2023-11-23 22:31:07,194 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 149 transitions, 337 flow [2023-11-23 22:31:07,210 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 149 transitions, 337 flow [2023-11-23 22:31:07,221 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:31:07,228 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=LoopHeads, 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;@505da9e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:31:07,229 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-23 22:31:07,239 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:31:07,239 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2023-11-23 22:31:07,239 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 22:31:07,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:31:07,240 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-23 22:31:07,246 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-23 22:31:07,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:31:07,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1039664551, now seen corresponding path program 1 times [2023-11-23 22:31:07,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:31:07,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253231848] [2023-11-23 22:31:07,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:31:07,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:31:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:31:07,544 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:31:07,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:31:07,660 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:31:07,662 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 22:31:07,663 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-11-23 22:31:07,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-11-23 22:31:07,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-11-23 22:31:07,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-11-23 22:31:07,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-11-23 22:31:07,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-11-23 22:31:07,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-11-23 22:31:07,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:31:07,668 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 22:31:07,677 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-23 22:31:07,677 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-23 22:31:07,858 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-11-23 22:31:07,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 264 transitions, 612 flow [2023-11-23 22:31:08,705 INFO L124 PetriNetUnfolderBase]: 929/2803 cut-off events. [2023-11-23 22:31:08,706 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-11-23 22:31:08,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3451 conditions, 2803 events. 929/2803 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 22322 event pairs, 22 based on Foata normal form. 0/2158 useless extension candidates. Maximal degree in co-relation 1909. Up to 192 conditions per place. [2023-11-23 22:31:08,772 INFO L82 GeneralOperation]: Start removeDead. Operand has 201 places, 264 transitions, 612 flow [2023-11-23 22:31:08,833 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 201 places, 264 transitions, 612 flow [2023-11-23 22:31:08,836 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:31:08,839 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=LoopHeads, 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;@505da9e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:31:08,840 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-23 22:31:08,854 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:31:08,854 INFO L124 PetriNetUnfolderBase]: 4/66 cut-off events. [2023-11-23 22:31:08,854 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-23 22:31:08,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:31:08,855 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2023-11-23 22:31:08,855 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-23 22:31:08,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:31:08,857 INFO L85 PathProgramCache]: Analyzing trace with hash 339774364, now seen corresponding path program 1 times [2023-11-23 22:31:08,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:31:08,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000616859] [2023-11-23 22:31:08,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:31:08,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:31:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:31:08,979 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:31:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:31:09,030 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:31:09,030 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 22:31:09,031 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-11-23 22:31:09,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2023-11-23 22:31:09,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2023-11-23 22:31:09,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 9 remaining) [2023-11-23 22:31:09,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2023-11-23 22:31:09,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 9 remaining) [2023-11-23 22:31:09,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 9 remaining) [2023-11-23 22:31:09,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2023-11-23 22:31:09,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2023-11-23 22:31:09,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 22:31:09,034 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 22:31:09,035 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-23 22:31:09,035 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-23 22:31:09,216 INFO L144 ThreadInstanceAdder]: Constructed 27 joinOtherThreadTransitions. [2023-11-23 22:31:09,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 285 places, 379 transitions, 893 flow [2023-11-23 22:31:16,183 INFO L124 PetriNetUnfolderBase]: 7432/15556 cut-off events. [2023-11-23 22:31:16,183 INFO L125 PetriNetUnfolderBase]: For 7059/7059 co-relation queries the response was YES. [2023-11-23 22:31:16,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22667 conditions, 15556 events. 7432/15556 cut-off events. For 7059/7059 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 130076 event pairs, 1312 based on Foata normal form. 0/12908 useless extension candidates. Maximal degree in co-relation 11615. Up to 2304 conditions per place. [2023-11-23 22:31:16,879 INFO L82 GeneralOperation]: Start removeDead. Operand has 285 places, 379 transitions, 893 flow [2023-11-23 22:31:17,759 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 285 places, 379 transitions, 893 flow [2023-11-23 22:31:17,761 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:31:17,762 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=LoopHeads, 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;@505da9e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:31:17,763 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-23 22:31:17,789 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:31:17,789 INFO L124 PetriNetUnfolderBase]: 16/168 cut-off events. [2023-11-23 22:31:17,789 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-23 22:31:17,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:31:17,790 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2023-11-23 22:31:17,790 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-23 22:31:17,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:31:17,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1662953626, now seen corresponding path program 1 times [2023-11-23 22:31:17,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:31:17,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727692553] [2023-11-23 22:31:17,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:31:17,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:31:17,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:31:17,871 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:31:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:31:17,930 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:31:17,937 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 22:31:17,938 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2023-11-23 22:31:17,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (9 of 11 remaining) [2023-11-23 22:31:17,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (8 of 11 remaining) [2023-11-23 22:31:17,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 11 remaining) [2023-11-23 22:31:17,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 11 remaining) [2023-11-23 22:31:17,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 11 remaining) [2023-11-23 22:31:17,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 11 remaining) [2023-11-23 22:31:17,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 11 remaining) [2023-11-23 22:31:17,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 11 remaining) [2023-11-23 22:31:17,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 11 remaining) [2023-11-23 22:31:17,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 11 remaining) [2023-11-23 22:31:17,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 22:31:17,948 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 22:31:17,949 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-23 22:31:17,950 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-23 22:31:18,160 INFO L144 ThreadInstanceAdder]: Constructed 36 joinOtherThreadTransitions. [2023-11-23 22:31:18,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 369 places, 494 transitions, 1180 flow