./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_f20590b7-a7a1-46f3-a8eb-f2006ee580e9/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f20590b7-a7a1-46f3-a8eb-f2006ee580e9/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f20590b7-a7a1-46f3-a8eb-f2006ee580e9/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f20590b7-a7a1-46f3-a8eb-f2006ee580e9/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f20590b7-a7a1-46f3-a8eb-f2006ee580e9/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f20590b7-a7a1-46f3-a8eb-f2006ee580e9/bin/uautomizer-verify-jihMAELWvX --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 b4399e58ed3ca9c75e2a61372e91a4308548a0e79a3eb4428d85990bd71242f7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:41:00,663 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:41:00,794 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f20590b7-a7a1-46f3-a8eb-f2006ee580e9/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 16:41:00,800 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:41:00,801 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:41:00,844 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:41:00,845 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:41:00,845 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:41:00,846 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:41:00,846 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:41:00,847 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:41:00,848 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:41:00,849 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:41:00,850 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:41:00,851 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:41:00,851 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:41:00,851 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:41:00,852 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:41:00,854 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:41:00,855 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:41:00,855 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:41:00,856 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:41:00,856 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:41:00,857 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:41:00,857 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:41:00,857 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:41:00,858 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:41:00,858 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:41:00,862 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:41:00,863 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:41:00,863 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:41:00,863 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:41:00,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:41:00,864 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:41:00,864 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:41:00,865 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:41:00,865 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:41:00,865 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:41:00,866 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:41:00,866 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:41:00,866 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:41:00,868 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:41:00,868 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_f20590b7-a7a1-46f3-a8eb-f2006ee580e9/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f20590b7-a7a1-46f3-a8eb-f2006ee580e9/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4399e58ed3ca9c75e2a61372e91a4308548a0e79a3eb4428d85990bd71242f7 [2024-11-08 16:41:01,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:41:01,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:41:01,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:41:01,255 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:41:01,255 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:41:01,257 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f20590b7-a7a1-46f3-a8eb-f2006ee580e9/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i Unable to find full path for "g++" [2024-11-08 16:41:03,337 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:41:03,584 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:41:03,584 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f20590b7-a7a1-46f3-a8eb-f2006ee580e9/sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i [2024-11-08 16:41:03,611 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f20590b7-a7a1-46f3-a8eb-f2006ee580e9/bin/uautomizer-verify-jihMAELWvX/data/86638595a/7dceaf4a3bcb4910b346e0e64eba2f84/FLAG4863576cd [2024-11-08 16:41:03,627 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f20590b7-a7a1-46f3-a8eb-f2006ee580e9/bin/uautomizer-verify-jihMAELWvX/data/86638595a/7dceaf4a3bcb4910b346e0e64eba2f84 [2024-11-08 16:41:03,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:41:03,632 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:41:03,633 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:41:03,634 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:41:03,644 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:41:03,647 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:41:03" (1/1) ... [2024-11-08 16:41:03,648 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5407d82b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:41:03, skipping insertion in model container [2024-11-08 16:41:03,648 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:41:03" (1/1) ... [2024-11-08 16:41:03,710 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:41:04,178 WARN L250 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_f20590b7-a7a1-46f3-a8eb-f2006ee580e9/sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i[30176,30189] [2024-11-08 16:41:04,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:41:04,244 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:41:04,297 WARN L250 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_f20590b7-a7a1-46f3-a8eb-f2006ee580e9/sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i[30176,30189] [2024-11-08 16:41:04,314 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:41:04,358 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:41:04,359 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:41:04 WrapperNode [2024-11-08 16:41:04,359 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:41:04,360 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:41:04,361 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:41:04,361 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:41:04,368 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:41:04" (1/1) ... [2024-11-08 16:41:04,389 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:41:04" (1/1) ... [2024-11-08 16:41:04,423 INFO L138 Inliner]: procedures = 171, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 100 [2024-11-08 16:41:04,423 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:41:04,424 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:41:04,424 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:41:04,427 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:41:04,440 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:41:04" (1/1) ... [2024-11-08 16:41:04,440 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:41:04" (1/1) ... [2024-11-08 16:41:04,446 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:41:04" (1/1) ... [2024-11-08 16:41:04,464 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 5, 5, 2]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2024-11-08 16:41:04,464 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:41:04" (1/1) ... [2024-11-08 16:41:04,465 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:41:04" (1/1) ... [2024-11-08 16:41:04,471 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:41:04" (1/1) ... [2024-11-08 16:41:04,475 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:41:04" (1/1) ... [2024-11-08 16:41:04,476 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:41:04" (1/1) ... [2024-11-08 16:41:04,478 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:41:04" (1/1) ... [2024-11-08 16:41:04,481 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:41:04,482 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:41:04,482 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:41:04,482 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:41:04,483 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:41:04" (1/1) ... [2024-11-08 16:41:04,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:41:04,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f20590b7-a7a1-46f3-a8eb-f2006ee580e9/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:41:04,519 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f20590b7-a7a1-46f3-a8eb-f2006ee580e9/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:41:04,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f20590b7-a7a1-46f3-a8eb-f2006ee580e9/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:41:04,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 16:41:04,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 16:41:04,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 16:41:04,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-08 16:41:04,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 16:41:04,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 16:41:04,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 16:41:04,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-08 16:41:04,589 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-08 16:41:04,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:41:04,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 16:41:04,590 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-08 16:41:04,590 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-08 16:41:04,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 16:41:04,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:41:04,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 16:41:04,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 16:41:04,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-08 16:41:04,591 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-08 16:41:04,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:41:04,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:41:04,598 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 16:41:04,771 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:41:04,773 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:41:05,038 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 16:41:05,038 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:41:05,234 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:41:05,234 INFO L316 CfgBuilder]: Removed 14 assume(true) statements. [2024-11-08 16:41:05,235 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:41:05 BoogieIcfgContainer [2024-11-08 16:41:05,235 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:41:05,237 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:41:05,241 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:41:05,248 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:41:05,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:41:03" (1/3) ... [2024-11-08 16:41:05,249 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16f8ed8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:41:05, skipping insertion in model container [2024-11-08 16:41:05,250 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:41:04" (2/3) ... [2024-11-08 16:41:05,250 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16f8ed8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:41:05, skipping insertion in model container [2024-11-08 16:41:05,250 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:41:05" (3/3) ... [2024-11-08 16:41:05,251 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_61-invariant_racing.i [2024-11-08 16:41:05,266 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:41:05,266 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 16:41:05,266 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 16:41:05,316 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-08 16:41:05,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 84 transitions, 175 flow [2024-11-08 16:41:05,409 INFO L124 PetriNetUnfolderBase]: 30/128 cut-off events. [2024-11-08 16:41:05,412 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-08 16:41:05,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 128 events. 30/128 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 446 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 79. Up to 6 conditions per place. [2024-11-08 16:41:05,419 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 84 transitions, 175 flow [2024-11-08 16:41:05,425 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 82 transitions, 168 flow [2024-11-08 16:41:05,439 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:41:05,450 INFO L333 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, 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;@2f68a52, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:41:05,450 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 16:41:05,471 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 16:41:05,471 INFO L124 PetriNetUnfolderBase]: 6/39 cut-off events. [2024-11-08 16:41:05,471 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 16:41:05,471 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:41:05,472 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-08 16:41:05,476 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:41:05,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:41:05,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1457218963, now seen corresponding path program 1 times [2024-11-08 16:41:05,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:41:05,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531695439] [2024-11-08 16:41:05,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:41:05,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:41:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:41:05,636 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 16:41:05,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:41:05,683 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 16:41:05,685 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 16:41:05,686 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-11-08 16:41:05,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-08 16:41:05,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:41:05,690 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-08 16:41:05,694 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 16:41:05,694 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-08 16:41:05,730 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-08 16:41:05,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 120 transitions, 256 flow [2024-11-08 16:41:05,813 INFO L124 PetriNetUnfolderBase]: 51/218 cut-off events. [2024-11-08 16:41:05,814 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2024-11-08 16:41:05,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 218 events. 51/218 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 931 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 132. Up to 9 conditions per place. [2024-11-08 16:41:05,816 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 120 transitions, 256 flow [2024-11-08 16:41:05,819 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 120 transitions, 256 flow [2024-11-08 16:41:05,820 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:41:05,822 INFO L333 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, 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;@2f68a52, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:41:05,822 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 16:41:05,830 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 16:41:05,830 INFO L124 PetriNetUnfolderBase]: 10/57 cut-off events. [2024-11-08 16:41:05,831 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-08 16:41:05,831 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:41:05,831 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:41:05,831 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:41:05,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:41:05,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1464742486, now seen corresponding path program 1 times [2024-11-08 16:41:05,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:41:05,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49322670] [2024-11-08 16:41:05,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:41:05,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:41:05,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:41:05,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:41:05,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:41:05,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49322670] [2024-11-08 16:41:05,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49322670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:41:05,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:41:05,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:41:05,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504003538] [2024-11-08 16:41:05,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:41:05,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:41:06,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:41:06,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:41:06,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:41:06,054 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 120 [2024-11-08 16:41:06,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 120 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2024-11-08 16:41:06,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:41:06,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 120 [2024-11-08 16:41:06,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:41:08,808 INFO L124 PetriNetUnfolderBase]: 8445/16849 cut-off events. [2024-11-08 16:41:08,808 INFO L125 PetriNetUnfolderBase]: For 151/151 co-relation queries the response was YES. [2024-11-08 16:41:08,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29410 conditions, 16849 events. 8445/16849 cut-off events. For 151/151 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 148362 event pairs, 7397 based on Foata normal form. 3502/19412 useless extension candidates. Maximal degree in co-relation 11974. Up to 12468 conditions per place. [2024-11-08 16:41:08,918 INFO L140 encePairwiseOnDemand]: 95/120 looper letters, 56 selfloop transitions, 2 changer transitions 14/114 dead transitions. [2024-11-08 16:41:08,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 114 transitions, 378 flow [2024-11-08 16:41:08,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:41:08,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:41:08,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2024-11-08 16:41:08,935 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6583333333333333 [2024-11-08 16:41:08,937 INFO L175 Difference]: Start difference. First operand has 98 places, 120 transitions, 256 flow. Second operand 3 states and 237 transitions. [2024-11-08 16:41:08,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 114 transitions, 378 flow [2024-11-08 16:41:08,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 114 transitions, 378 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 16:41:08,953 INFO L231 Difference]: Finished difference. Result has 101 places, 86 transitions, 194 flow [2024-11-08 16:41:08,955 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=101, PETRI_TRANSITIONS=86} [2024-11-08 16:41:08,960 INFO L277 CegarLoopForPetriNet]: 98 programPoint places, 3 predicate places. [2024-11-08 16:41:08,960 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 86 transitions, 194 flow [2024-11-08 16:41:08,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2024-11-08 16:41:08,961 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:41:08,962 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-08 16:41:08,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:41:08,962 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:41:08,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:41:08,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1695526111, now seen corresponding path program 1 times [2024-11-08 16:41:08,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:41:08,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135456979] [2024-11-08 16:41:08,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:41:08,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:41:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:41:09,027 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 16:41:09,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:41:09,077 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 16:41:09,077 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 16:41:09,077 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-11-08 16:41:09,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-08 16:41:09,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 16:41:09,078 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-08 16:41:09,079 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 16:41:09,079 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-08 16:41:09,120 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-08 16:41:09,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 156 transitions, 339 flow [2024-11-08 16:41:09,163 INFO L124 PetriNetUnfolderBase]: 77/325 cut-off events. [2024-11-08 16:41:09,165 INFO L125 PetriNetUnfolderBase]: For 19/22 co-relation queries the response was YES. [2024-11-08 16:41:09,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 325 events. 77/325 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1493 event pairs, 1 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 229. Up to 16 conditions per place. [2024-11-08 16:41:09,172 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 156 transitions, 339 flow [2024-11-08 16:41:09,181 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 156 transitions, 339 flow [2024-11-08 16:41:09,183 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:41:09,184 INFO L333 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, 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;@2f68a52, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:41:09,185 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 16:41:09,191 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 16:41:09,191 INFO L124 PetriNetUnfolderBase]: 10/57 cut-off events. [2024-11-08 16:41:09,191 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-08 16:41:09,192 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:41:09,192 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:41:09,192 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:41:09,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:41:09,193 INFO L85 PathProgramCache]: Analyzing trace with hash 710530006, now seen corresponding path program 1 times [2024-11-08 16:41:09,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:41:09,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291781663] [2024-11-08 16:41:09,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:41:09,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:41:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:41:09,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:41:09,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:41:09,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291781663] [2024-11-08 16:41:09,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291781663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:41:09,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:41:09,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:41:09,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705534320] [2024-11-08 16:41:09,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:41:09,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:41:09,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:41:09,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:41:09,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:41:09,311 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 156 [2024-11-08 16:41:09,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 156 transitions, 339 flow. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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) [2024-11-08 16:41:09,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:41:09,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 156 [2024-11-08 16:41:09,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:41:44,503 INFO L124 PetriNetUnfolderBase]: 180058/302006 cut-off events. [2024-11-08 16:41:44,508 INFO L125 PetriNetUnfolderBase]: For 3889/3889 co-relation queries the response was YES. [2024-11-08 16:41:45,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 541271 conditions, 302006 events. 180058/302006 cut-off events. For 3889/3889 co-relation queries the response was YES. Maximal size of possible extension queue 5999. Compared 3173039 event pairs, 156782 based on Foata normal form. 66176/354429 useless extension candidates. Maximal degree in co-relation 93050. Up to 237742 conditions per place. [2024-11-08 16:41:46,189 INFO L140 encePairwiseOnDemand]: 125/156 looper letters, 70 selfloop transitions, 2 changer transitions 15/144 dead transitions. [2024-11-08 16:41:46,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 144 transitions, 479 flow [2024-11-08 16:41:46,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:41:46,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:41:46,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2024-11-08 16:41:46,193 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6474358974358975 [2024-11-08 16:41:46,193 INFO L175 Difference]: Start difference. First operand has 128 places, 156 transitions, 339 flow. Second operand 3 states and 303 transitions. [2024-11-08 16:41:46,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 144 transitions, 479 flow [2024-11-08 16:41:46,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 144 transitions, 479 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 16:41:46,202 INFO L231 Difference]: Finished difference. Result has 131 places, 115 transitions, 260 flow [2024-11-08 16:41:46,203 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=131, PETRI_TRANSITIONS=115} [2024-11-08 16:41:46,204 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, 3 predicate places. [2024-11-08 16:41:46,204 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 115 transitions, 260 flow [2024-11-08 16:41:46,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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) [2024-11-08 16:41:46,205 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:41:46,205 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1] [2024-11-08 16:41:46,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 16:41:46,205 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:41:46,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:41:46,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1689679082, now seen corresponding path program 1 times [2024-11-08 16:41:46,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:41:46,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054581790] [2024-11-08 16:41:46,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:41:46,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:41:46,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:41:46,250 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 16:41:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:41:46,273 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 16:41:46,273 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 16:41:46,274 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-11-08 16:41:46,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-08 16:41:46,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 16:41:46,274 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-08 16:41:46,275 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 16:41:46,276 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-08 16:41:46,316 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-08 16:41:46,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 192 transitions, 424 flow [2024-11-08 16:41:46,376 INFO L124 PetriNetUnfolderBase]: 115/468 cut-off events. [2024-11-08 16:41:46,377 INFO L125 PetriNetUnfolderBase]: For 48/53 co-relation queries the response was YES. [2024-11-08 16:41:46,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 519 conditions, 468 events. 115/468 cut-off events. For 48/53 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2251 event pairs, 6 based on Foata normal form. 0/348 useless extension candidates. Maximal degree in co-relation 349. Up to 32 conditions per place. [2024-11-08 16:41:46,383 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 192 transitions, 424 flow [2024-11-08 16:41:46,387 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 192 transitions, 424 flow [2024-11-08 16:41:46,389 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:41:46,390 INFO L333 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, 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;@2f68a52, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:41:46,390 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 16:41:46,394 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 16:41:46,394 INFO L124 PetriNetUnfolderBase]: 10/57 cut-off events. [2024-11-08 16:41:46,394 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-08 16:41:46,395 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:41:46,395 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:41:46,395 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 16:41:46,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:41:46,396 INFO L85 PathProgramCache]: Analyzing trace with hash 2094943190, now seen corresponding path program 1 times [2024-11-08 16:41:46,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:41:46,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719162530] [2024-11-08 16:41:46,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:41:46,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:41:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:41:46,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:41:46,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:41:46,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719162530] [2024-11-08 16:41:46,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719162530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:41:46,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:41:46,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:41:46,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214351452] [2024-11-08 16:41:46,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:41:46,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:41:46,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:41:46,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:41:46,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:41:46,453 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 192 [2024-11-08 16:41:46,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 192 transitions, 424 flow. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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) [2024-11-08 16:41:46,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:41:46,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 192 [2024-11-08 16:41:46,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand