./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe013_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525d7f68-b8f1-4f4c-a0a2-d58f9b4bff1b/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525d7f68-b8f1-4f4c-a0a2-d58f9b4bff1b/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525d7f68-b8f1-4f4c-a0a2-d58f9b4bff1b/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525d7f68-b8f1-4f4c-a0a2-d58f9b4bff1b/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe013_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525d7f68-b8f1-4f4c-a0a2-d58f9b4bff1b/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525d7f68-b8f1-4f4c-a0a2-d58f9b4bff1b/bin/uautomizer-verify-4GaUIPS5ZU --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 0cdeed82108b12e5d5525e3abe542fd48b9a422ac7475147d5db7c8538ce4dc0 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:14:41,359 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:14:41,437 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525d7f68-b8f1-4f4c-a0a2-d58f9b4bff1b/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:14:41,442 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:14:41,442 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:14:41,466 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:14:41,467 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:14:41,467 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:14:41,468 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:14:41,469 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:14:41,469 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:14:41,470 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:14:41,470 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:14:41,471 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:14:41,471 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:14:41,472 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:14:41,472 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:14:41,473 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:14:41,473 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:14:41,473 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:14:41,474 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:14:41,474 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:14:41,475 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:14:41,475 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:14:41,476 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:14:41,476 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:14:41,476 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:14:41,477 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:14:41,477 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:14:41,478 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:14:41,478 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:14:41,478 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:14:41,479 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:14:41,487 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:14:41,488 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:14:41,488 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:14:41,489 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:14:41,489 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:14:41,489 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:14:41,490 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:14:41,490 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:14:41,491 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:14:41,491 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_525d7f68-b8f1-4f4c-a0a2-d58f9b4bff1b/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525d7f68-b8f1-4f4c-a0a2-d58f9b4bff1b/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cdeed82108b12e5d5525e3abe542fd48b9a422ac7475147d5db7c8538ce4dc0 [2024-10-31 22:14:41,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:14:41,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:14:41,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:14:41,858 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:14:41,859 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:14:41,860 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525d7f68-b8f1-4f4c-a0a2-d58f9b4bff1b/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-wmm/safe013_tso.i Unable to find full path for "g++" [2024-10-31 22:14:44,149 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:14:44,501 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:14:44,503 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525d7f68-b8f1-4f4c-a0a2-d58f9b4bff1b/sv-benchmarks/c/pthread-wmm/safe013_tso.i [2024-10-31 22:14:44,517 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525d7f68-b8f1-4f4c-a0a2-d58f9b4bff1b/bin/uautomizer-verify-4GaUIPS5ZU/data/9c2313d93/3c7c06eba67046b78ed5992023bbc21b/FLAG3decc6317 [2024-10-31 22:14:44,532 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525d7f68-b8f1-4f4c-a0a2-d58f9b4bff1b/bin/uautomizer-verify-4GaUIPS5ZU/data/9c2313d93/3c7c06eba67046b78ed5992023bbc21b [2024-10-31 22:14:44,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:14:44,539 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:14:44,540 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:14:44,541 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:14:44,547 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:14:44,548 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:14:44" (1/1) ... [2024-10-31 22:14:44,549 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60ac8c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:44, skipping insertion in model container [2024-10-31 22:14:44,552 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:14:44" (1/1) ... [2024-10-31 22:14:44,614 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:14:44,918 WARN L251 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_525d7f68-b8f1-4f4c-a0a2-d58f9b4bff1b/sv-benchmarks/c/pthread-wmm/safe013_tso.i[945,958] [2024-10-31 22:14:45,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:14:45,153 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:14:45,174 WARN L251 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_525d7f68-b8f1-4f4c-a0a2-d58f9b4bff1b/sv-benchmarks/c/pthread-wmm/safe013_tso.i[945,958] [2024-10-31 22:14:45,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:14:45,294 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:14:45,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:45 WrapperNode [2024-10-31 22:14:45,295 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:14:45,296 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:14:45,297 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:14:45,297 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:14:45,306 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:45" (1/1) ... [2024-10-31 22:14:45,330 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:45" (1/1) ... [2024-10-31 22:14:45,386 INFO L138 Inliner]: procedures = 175, calls = 43, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2024-10-31 22:14:45,390 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:14:45,392 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:14:45,393 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:14:45,393 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:14:45,415 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:45" (1/1) ... [2024-10-31 22:14:45,415 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:45" (1/1) ... [2024-10-31 22:14:45,421 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:45" (1/1) ... [2024-10-31 22:14:45,435 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 22:14:45,435 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:45" (1/1) ... [2024-10-31 22:14:45,436 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:45" (1/1) ... [2024-10-31 22:14:45,444 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:45" (1/1) ... [2024-10-31 22:14:45,446 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:45" (1/1) ... [2024-10-31 22:14:45,447 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:45" (1/1) ... [2024-10-31 22:14:45,449 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:45" (1/1) ... [2024-10-31 22:14:45,451 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:14:45,452 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:14:45,452 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:14:45,453 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:14:45,453 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:45" (1/1) ... [2024-10-31 22:14:45,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:14:45,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525d7f68-b8f1-4f4c-a0a2-d58f9b4bff1b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:45,506 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525d7f68-b8f1-4f4c-a0a2-d58f9b4bff1b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:14:45,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525d7f68-b8f1-4f4c-a0a2-d58f9b4bff1b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:14:45,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:14:45,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:14:45,565 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-31 22:14:45,565 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-31 22:14:45,565 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-31 22:14:45,566 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-31 22:14:45,566 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-31 22:14:45,566 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-31 22:14:45,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:14:45,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:14:45,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:14:45,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:14:45,570 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:14:45,743 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:14:45,746 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:14:45,976 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:14:45,977 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:14:46,084 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:14:46,085 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 22:14:46,085 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:14:46 BoogieIcfgContainer [2024-10-31 22:14:46,086 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:14:46,092 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:14:46,095 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:14:46,101 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:14:46,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:14:44" (1/3) ... [2024-10-31 22:14:46,104 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31eaa281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:14:46, skipping insertion in model container [2024-10-31 22:14:46,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:45" (2/3) ... [2024-10-31 22:14:46,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31eaa281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:14:46, skipping insertion in model container [2024-10-31 22:14:46,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:14:46" (3/3) ... [2024-10-31 22:14:46,107 INFO L112 eAbstractionObserver]: Analyzing ICFG safe013_tso.i [2024-10-31 22:14:46,130 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:14:46,131 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:14:46,131 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:14:46,200 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:14:46,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 39 transitions, 90 flow [2024-10-31 22:14:46,298 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2024-10-31 22:14:46,298 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:14:46,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 36 events. 1/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 69 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2024-10-31 22:14:46,304 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 39 transitions, 90 flow [2024-10-31 22:14:46,308 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 33 transitions, 75 flow [2024-10-31 22:14:46,320 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:14:46,327 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;@3d6a39bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:14:46,328 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-31 22:14:46,369 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:14:46,373 INFO L124 PetriNetUnfolderBase]: 0/32 cut-off events. [2024-10-31 22:14:46,374 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:14:46,374 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:14:46,375 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:14:46,375 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 22:14:46,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:46,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1691510903, now seen corresponding path program 1 times [2024-10-31 22:14:46,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:46,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217033728] [2024-10-31 22:14:46,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:46,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:46,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:47,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:14:47,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:47,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217033728] [2024-10-31 22:14:47,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217033728] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:14:47,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:14:47,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:14:47,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261327469] [2024-10-31 22:14:47,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:14:47,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:14:47,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:47,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:14:47,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:14:47,133 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 39 [2024-10-31 22:14:47,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2024-10-31 22:14:47,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:14:47,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 39 [2024-10-31 22:14:47,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:14:47,409 INFO L124 PetriNetUnfolderBase]: 291/592 cut-off events. [2024-10-31 22:14:47,409 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-31 22:14:47,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1098 conditions, 592 events. 291/592 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3220 event pairs, 58 based on Foata normal form. 27/609 useless extension candidates. Maximal degree in co-relation 1087. Up to 236 conditions per place. [2024-10-31 22:14:47,419 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 25 selfloop transitions, 5 changer transitions 1/48 dead transitions. [2024-10-31 22:14:47,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 48 transitions, 173 flow [2024-10-31 22:14:47,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:14:47,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:14:47,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-10-31 22:14:47,437 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-10-31 22:14:47,440 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 75 flow. Second operand 4 states and 117 transitions. [2024-10-31 22:14:47,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 48 transitions, 173 flow [2024-10-31 22:14:47,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 48 transitions, 168 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:14:47,450 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 106 flow [2024-10-31 22:14:47,452 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2024-10-31 22:14:47,459 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2024-10-31 22:14:47,459 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 106 flow [2024-10-31 22:14:47,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2024-10-31 22:14:47,460 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:14:47,460 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:14:47,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:14:47,462 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 22:14:47,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:47,463 INFO L85 PathProgramCache]: Analyzing trace with hash -81870312, now seen corresponding path program 1 times [2024-10-31 22:14:47,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:47,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135233177] [2024-10-31 22:14:47,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:47,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:47,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:14:47,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:47,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135233177] [2024-10-31 22:14:47,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135233177] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:14:47,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:14:47,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:14:47,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864247801] [2024-10-31 22:14:47,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:14:47,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:14:47,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:47,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:14:47,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:14:47,806 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 39 [2024-10-31 22:14:47,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 106 flow. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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) [2024-10-31 22:14:47,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:14:47,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 39 [2024-10-31 22:14:47,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:14:48,030 INFO L124 PetriNetUnfolderBase]: 249/507 cut-off events. [2024-10-31 22:14:48,030 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2024-10-31 22:14:48,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1185 conditions, 507 events. 249/507 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2517 event pairs, 15 based on Foata normal form. 26/525 useless extension candidates. Maximal degree in co-relation 1173. Up to 188 conditions per place. [2024-10-31 22:14:48,036 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 31 selfloop transitions, 8 changer transitions 1/57 dead transitions. [2024-10-31 22:14:48,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 57 transitions, 249 flow [2024-10-31 22:14:48,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:14:48,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:14:48,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 147 transitions. [2024-10-31 22:14:48,038 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7538461538461538 [2024-10-31 22:14:48,039 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 106 flow. Second operand 5 states and 147 transitions. [2024-10-31 22:14:48,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 57 transitions, 249 flow [2024-10-31 22:14:48,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 57 transitions, 239 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-31 22:14:48,041 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 146 flow [2024-10-31 22:14:48,042 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=146, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2024-10-31 22:14:48,043 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2024-10-31 22:14:48,043 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 146 flow [2024-10-31 22:14:48,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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) [2024-10-31 22:14:48,043 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:14:48,043 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:14:48,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:14:48,044 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 22:14:48,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:48,045 INFO L85 PathProgramCache]: Analyzing trace with hash -679659613, now seen corresponding path program 1 times [2024-10-31 22:14:48,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:48,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628682921] [2024-10-31 22:14:48,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:48,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:48,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:48,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:14:48,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:48,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628682921] [2024-10-31 22:14:48,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628682921] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:14:48,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:14:48,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:14:48,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901081055] [2024-10-31 22:14:48,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:14:48,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:14:48,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:48,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:14:48,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:14:48,235 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 39 [2024-10-31 22:14:48,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 146 flow. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2024-10-31 22:14:48,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:14:48,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 39 [2024-10-31 22:14:48,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:14:48,404 INFO L124 PetriNetUnfolderBase]: 174/342 cut-off events. [2024-10-31 22:14:48,404 INFO L125 PetriNetUnfolderBase]: For 352/352 co-relation queries the response was YES. [2024-10-31 22:14:48,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 941 conditions, 342 events. 174/342 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1289 event pairs, 6 based on Foata normal form. 20/354 useless extension candidates. Maximal degree in co-relation 927. Up to 108 conditions per place. [2024-10-31 22:14:48,409 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 29 selfloop transitions, 11 changer transitions 1/58 dead transitions. [2024-10-31 22:14:48,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 276 flow [2024-10-31 22:14:48,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:14:48,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:14:48,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-10-31 22:14:48,416 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2024-10-31 22:14:48,416 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 146 flow. Second operand 6 states and 169 transitions. [2024-10-31 22:14:48,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 58 transitions, 276 flow [2024-10-31 22:14:48,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 58 transitions, 251 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-10-31 22:14:48,420 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 160 flow [2024-10-31 22:14:48,420 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=160, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2024-10-31 22:14:48,421 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2024-10-31 22:14:48,421 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 160 flow [2024-10-31 22:14:48,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2024-10-31 22:14:48,422 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:14:48,422 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:14:48,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:14:48,422 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 22:14:48,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:48,423 INFO L85 PathProgramCache]: Analyzing trace with hash -726187898, now seen corresponding path program 1 times [2024-10-31 22:14:48,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:48,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304709566] [2024-10-31 22:14:48,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:48,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:48,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:14:48,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:48,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304709566] [2024-10-31 22:14:48,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304709566] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:14:48,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:14:48,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:14:48,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376376377] [2024-10-31 22:14:48,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:14:48,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:14:48,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:48,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:14:48,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:14:48,738 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 39 [2024-10-31 22:14:48,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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) [2024-10-31 22:14:48,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:14:48,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 39 [2024-10-31 22:14:48,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:14:48,958 INFO L124 PetriNetUnfolderBase]: 226/500 cut-off events. [2024-10-31 22:14:48,959 INFO L125 PetriNetUnfolderBase]: For 357/365 co-relation queries the response was YES. [2024-10-31 22:14:48,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1220 conditions, 500 events. 226/500 cut-off events. For 357/365 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2440 event pairs, 44 based on Foata normal form. 8/468 useless extension candidates. Maximal degree in co-relation 1205. Up to 145 conditions per place. [2024-10-31 22:14:48,964 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 20 selfloop transitions, 3 changer transitions 12/58 dead transitions. [2024-10-31 22:14:48,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 58 transitions, 278 flow [2024-10-31 22:14:48,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:14:48,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:14:48,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 162 transitions. [2024-10-31 22:14:48,966 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2024-10-31 22:14:48,966 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 160 flow. Second operand 6 states and 162 transitions. [2024-10-31 22:14:48,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 58 transitions, 278 flow [2024-10-31 22:14:48,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 58 transitions, 214 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-10-31 22:14:48,973 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 118 flow [2024-10-31 22:14:48,973 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=118, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2024-10-31 22:14:48,975 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2024-10-31 22:14:48,975 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 118 flow [2024-10-31 22:14:48,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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) [2024-10-31 22:14:48,976 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:14:48,976 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:14:48,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:14:48,977 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 22:14:48,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:48,978 INFO L85 PathProgramCache]: Analyzing trace with hash -278583160, now seen corresponding path program 2 times [2024-10-31 22:14:48,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:48,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233029079] [2024-10-31 22:14:48,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:48,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:49,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:14:49,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:49,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233029079] [2024-10-31 22:14:49,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233029079] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:14:49,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:14:49,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:14:49,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387064425] [2024-10-31 22:14:49,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:14:49,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:14:49,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:49,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:14:49,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:14:49,190 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 39 [2024-10-31 22:14:49,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 118 flow. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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) [2024-10-31 22:14:49,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:14:49,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 39 [2024-10-31 22:14:49,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:14:49,419 INFO L124 PetriNetUnfolderBase]: 237/526 cut-off events. [2024-10-31 22:14:49,419 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-10-31 22:14:49,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1087 conditions, 526 events. 237/526 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2563 event pairs, 76 based on Foata normal form. 8/484 useless extension candidates. Maximal degree in co-relation 1073. Up to 187 conditions per place. [2024-10-31 22:14:49,423 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 19 selfloop transitions, 1 changer transitions 16/59 dead transitions. [2024-10-31 22:14:49,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 238 flow [2024-10-31 22:14:49,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:14:49,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:14:49,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 163 transitions. [2024-10-31 22:14:49,424 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6965811965811965 [2024-10-31 22:14:49,425 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 118 flow. Second operand 6 states and 163 transitions. [2024-10-31 22:14:49,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 238 flow [2024-10-31 22:14:49,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 59 transitions, 222 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-10-31 22:14:49,428 INFO L231 Difference]: Finished difference. Result has 54 places, 39 transitions, 117 flow [2024-10-31 22:14:49,428 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=117, PETRI_PLACES=54, PETRI_TRANSITIONS=39} [2024-10-31 22:14:49,429 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2024-10-31 22:14:49,429 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 39 transitions, 117 flow [2024-10-31 22:14:49,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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) [2024-10-31 22:14:49,429 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:14:49,430 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:14:49,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:14:49,430 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 22:14:49,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:49,431 INFO L85 PathProgramCache]: Analyzing trace with hash -700630018, now seen corresponding path program 3 times [2024-10-31 22:14:49,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:49,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303707735] [2024-10-31 22:14:49,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:49,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:49,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:14:49,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:49,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303707735] [2024-10-31 22:14:49,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303707735] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:14:49,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:14:49,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:14:49,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411209144] [2024-10-31 22:14:49,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:14:49,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:14:49,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:49,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:14:49,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:14:49,664 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 39 [2024-10-31 22:14:49,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 39 transitions, 117 flow. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 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) [2024-10-31 22:14:49,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:14:49,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 39 [2024-10-31 22:14:49,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:14:49,808 INFO L124 PetriNetUnfolderBase]: 155/376 cut-off events. [2024-10-31 22:14:49,808 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-10-31 22:14:49,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 745 conditions, 376 events. 155/376 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1798 event pairs, 46 based on Foata normal form. 8/342 useless extension candidates. Maximal degree in co-relation 738. Up to 122 conditions per place. [2024-10-31 22:14:49,810 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 0 selfloop transitions, 0 changer transitions 48/48 dead transitions. [2024-10-31 22:14:49,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 48 transitions, 185 flow [2024-10-31 22:14:49,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:14:49,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:14:49,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-10-31 22:14:49,812 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.676923076923077 [2024-10-31 22:14:49,813 INFO L175 Difference]: Start difference. First operand has 54 places, 39 transitions, 117 flow. Second operand 5 states and 132 transitions. [2024-10-31 22:14:49,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 48 transitions, 185 flow [2024-10-31 22:14:49,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 48 transitions, 180 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-31 22:14:49,814 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2024-10-31 22:14:49,815 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2024-10-31 22:14:49,815 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2024-10-31 22:14:49,816 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2024-10-31 22:14:49,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 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) [2024-10-31 22:14:49,819 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-10-31 22:14:49,820 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-10-31 22:14:49,820 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-10-31 22:14:49,820 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-10-31 22:14:49,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:14:49,821 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2024-10-31 22:14:49,824 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-31 22:14:49,825 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-10-31 22:14:49,832 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.10 10:14:49 BasicIcfg [2024-10-31 22:14:49,832 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-31 22:14:49,833 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-31 22:14:49,833 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-31 22:14:49,833 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-31 22:14:49,834 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:14:46" (3/4) ... [2024-10-31 22:14:49,837 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-10-31 22:14:49,842 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2024-10-31 22:14:49,842 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2024-10-31 22:14:49,842 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2024-10-31 22:14:49,850 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2024-10-31 22:14:49,850 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-10-31 22:14:49,851 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-31 22:14:49,851 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-31 22:14:49,950 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525d7f68-b8f1-4f4c-a0a2-d58f9b4bff1b/bin/uautomizer-verify-4GaUIPS5ZU/witness.graphml [2024-10-31 22:14:49,951 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525d7f68-b8f1-4f4c-a0a2-d58f9b4bff1b/bin/uautomizer-verify-4GaUIPS5ZU/witness.yml [2024-10-31 22:14:49,951 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-31 22:14:49,952 INFO L158 Benchmark]: Toolchain (without parser) took 5413.02ms. Allocated memory was 140.5MB in the beginning and 180.4MB in the end (delta: 39.8MB). Free memory was 107.0MB in the beginning and 109.9MB in the end (delta: -2.9MB). Peak memory consumption was 37.4MB. Max. memory is 16.1GB. [2024-10-31 22:14:49,952 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 140.5MB. Free memory is still 109.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:14:49,953 INFO L158 Benchmark]: CACSL2BoogieTranslator took 755.38ms. Allocated memory is still 140.5MB. Free memory was 106.5MB in the beginning and 83.9MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-10-31 22:14:49,953 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.43ms. Allocated memory is still 140.5MB. Free memory was 83.9MB in the beginning and 81.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 22:14:49,953 INFO L158 Benchmark]: Boogie Preprocessor took 59.03ms. Allocated memory is still 140.5MB. Free memory was 81.8MB in the beginning and 79.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 22:14:49,954 INFO L158 Benchmark]: RCFGBuilder took 633.92ms. Allocated memory is still 140.5MB. Free memory was 79.7MB in the beginning and 60.4MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-10-31 22:14:49,954 INFO L158 Benchmark]: TraceAbstraction took 3740.58ms. Allocated memory was 140.5MB in the beginning and 180.4MB in the end (delta: 39.8MB). Free memory was 59.9MB in the beginning and 114.1MB in the end (delta: -54.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:14:49,955 INFO L158 Benchmark]: Witness Printer took 118.51ms. Allocated memory is still 180.4MB. Free memory was 114.1MB in the beginning and 109.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-31 22:14:49,957 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 140.5MB. Free memory is still 109.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 755.38ms. Allocated memory is still 140.5MB. Free memory was 106.5MB in the beginning and 83.9MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.43ms. Allocated memory is still 140.5MB. Free memory was 83.9MB in the beginning and 81.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.03ms. Allocated memory is still 140.5MB. Free memory was 81.8MB in the beginning and 79.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 633.92ms. Allocated memory is still 140.5MB. Free memory was 79.7MB in the beginning and 60.4MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 3740.58ms. Allocated memory was 140.5MB in the beginning and 180.4MB in the end (delta: 39.8MB). Free memory was 59.9MB in the beginning and 114.1MB in the end (delta: -54.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 118.51ms. Allocated memory is still 180.4MB. Free memory was 114.1MB in the beginning and 109.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 64 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.6s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 219 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 191 mSDsluCounter, 77 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 55 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 461 IncrementalHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 22 mSDtfsCounter, 461 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=160occurred in iteration=3, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 147 NumberOfCodeBlocks, 147 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 141 ConstructedInterpolants, 0 QuantifiedInterpolants, 387 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-31 22:14:49,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_525d7f68-b8f1-4f4c-a0a2-d58f9b4bff1b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE