./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c --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_e6527ae5-64b1-4ed1-a2db-ef4d9fb74eb2/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6527ae5-64b1-4ed1-a2db-ef4d9fb74eb2/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_e6527ae5-64b1-4ed1-a2db-ef4d9fb74eb2/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6527ae5-64b1-4ed1-a2db-ef4d9fb74eb2/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6527ae5-64b1-4ed1-a2db-ef4d9fb74eb2/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_e6527ae5-64b1-4ed1-a2db-ef4d9fb74eb2/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 981eae178b9cad0bb64b87dda8360f4f1e2e23d7b9d396f9db2ad5a6977098c4 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:30:28,526 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:30:28,635 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6527ae5-64b1-4ed1-a2db-ef4d9fb74eb2/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 16:30:28,640 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:30:28,641 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:30:28,681 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:30:28,681 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:30:28,682 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:30:28,683 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:30:28,683 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:30:28,684 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:30:28,685 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:30:28,685 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:30:28,686 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:30:28,687 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:30:28,687 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:30:28,688 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:30:28,688 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:30:28,689 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:30:28,689 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:30:28,690 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:30:28,694 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:30:28,694 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:30:28,695 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:30:28,695 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:30:28,696 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:30:28,696 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:30:28,696 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:30:28,697 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:30:28,697 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:30:28,702 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:30:28,702 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:30:28,702 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:30:28,703 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:30:28,703 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:30:28,703 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:30:28,704 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:30:28,704 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:30:28,705 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:30:28,706 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:30:28,706 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:30:28,707 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:30:28,708 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_e6527ae5-64b1-4ed1-a2db-ef4d9fb74eb2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6527ae5-64b1-4ed1-a2db-ef4d9fb74eb2/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 981eae178b9cad0bb64b87dda8360f4f1e2e23d7b9d396f9db2ad5a6977098c4 [2024-11-08 16:30:29,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:30:29,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:30:29,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:30:29,091 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:30:29,091 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:30:29,093 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6527ae5-64b1-4ed1-a2db-ef4d9fb74eb2/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c Unable to find full path for "g++" [2024-11-08 16:30:31,306 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:30:31,551 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:30:31,552 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6527ae5-64b1-4ed1-a2db-ef4d9fb74eb2/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2024-11-08 16:30:31,563 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6527ae5-64b1-4ed1-a2db-ef4d9fb74eb2/bin/uautomizer-verify-jihMAELWvX/data/67cd56b61/25ee82255d834971a04ab2a071d5804e/FLAG4f201e52d [2024-11-08 16:30:31,881 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6527ae5-64b1-4ed1-a2db-ef4d9fb74eb2/bin/uautomizer-verify-jihMAELWvX/data/67cd56b61/25ee82255d834971a04ab2a071d5804e [2024-11-08 16:30:31,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:30:31,887 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:30:31,888 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:30:31,888 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:30:31,896 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:30:31,897 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:30:31" (1/1) ... [2024-11-08 16:30:31,898 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538c46dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:30:31, skipping insertion in model container [2024-11-08 16:30:31,899 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:30:31" (1/1) ... [2024-11-08 16:30:31,938 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:30:32,235 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_e6527ae5-64b1-4ed1-a2db-ef4d9fb74eb2/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c[2218,2231] [2024-11-08 16:30:32,240 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:30:32,249 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:30:32,276 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_e6527ae5-64b1-4ed1-a2db-ef4d9fb74eb2/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c[2218,2231] [2024-11-08 16:30:32,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:30:32,297 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:30:32,297 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:30:32 WrapperNode [2024-11-08 16:30:32,297 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:30:32,298 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:30:32,299 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:30:32,299 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:30:32,307 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:30:32" (1/1) ... [2024-11-08 16:30:32,314 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:30:32" (1/1) ... [2024-11-08 16:30:32,334 INFO L138 Inliner]: procedures = 20, calls = 13, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 92 [2024-11-08 16:30:32,335 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:30:32,335 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:30:32,336 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:30:32,336 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:30:32,351 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:30:32" (1/1) ... [2024-11-08 16:30:32,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:30:32" (1/1) ... [2024-11-08 16:30:32,354 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:30:32" (1/1) ... [2024-11-08 16:30:32,382 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]. [2024-11-08 16:30:32,382 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:30:32" (1/1) ... [2024-11-08 16:30:32,383 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:30:32" (1/1) ... [2024-11-08 16:30:32,388 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:30:32" (1/1) ... [2024-11-08 16:30:32,400 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:30:32" (1/1) ... [2024-11-08 16:30:32,402 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:30:32" (1/1) ... [2024-11-08 16:30:32,407 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:30:32" (1/1) ... [2024-11-08 16:30:32,410 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:30:32,415 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:30:32,416 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:30:32,416 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:30:32,417 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:30:32" (1/1) ... [2024-11-08 16:30:32,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:30:32,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6527ae5-64b1-4ed1-a2db-ef4d9fb74eb2/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:30:32,456 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6527ae5-64b1-4ed1-a2db-ef4d9fb74eb2/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:30:32,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6527ae5-64b1-4ed1-a2db-ef4d9fb74eb2/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:30:32,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:30:32,496 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 16:30:32,496 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 16:30:32,496 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 16:30:32,496 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 16:30:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 16:30:32,497 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 16:30:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-08 16:30:32,499 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-08 16:30:32,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:30:32,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:30:32,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:30:32,502 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 16:30:32,605 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:30:32,608 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:30:32,874 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 16:30:32,874 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:30:33,080 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:30:33,080 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 16:30:33,081 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:30:33 BoogieIcfgContainer [2024-11-08 16:30:33,081 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:30:33,084 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:30:33,084 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:30:33,088 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:30:33,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:30:31" (1/3) ... [2024-11-08 16:30:33,090 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37716d08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:30:33, skipping insertion in model container [2024-11-08 16:30:33,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:30:32" (2/3) ... [2024-11-08 16:30:33,091 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37716d08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:30:33, skipping insertion in model container [2024-11-08 16:30:33,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:30:33" (3/3) ... [2024-11-08 16:30:33,093 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-determinism.wvr.c [2024-11-08 16:30:33,112 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:30:33,112 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 16:30:33,112 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 16:30:33,199 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-08 16:30:33,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 52 transitions, 132 flow [2024-11-08 16:30:33,306 INFO L124 PetriNetUnfolderBase]: 8/48 cut-off events. [2024-11-08 16:30:33,311 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-08 16:30:33,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 48 events. 8/48 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 91 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-11-08 16:30:33,322 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 52 transitions, 132 flow [2024-11-08 16:30:33,327 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 47 transitions, 118 flow [2024-11-08 16:30:33,348 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:30:33,359 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;@473d5c4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:30:33,360 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-08 16:30:33,400 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 16:30:33,401 INFO L124 PetriNetUnfolderBase]: 8/46 cut-off events. [2024-11-08 16:30:33,401 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-08 16:30:33,401 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:30:33,402 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] [2024-11-08 16:30:33,403 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 2 more)] === [2024-11-08 16:30:33,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:30:33,410 INFO L85 PathProgramCache]: Analyzing trace with hash 256313872, now seen corresponding path program 1 times [2024-11-08 16:30:33,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:30:33,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206003609] [2024-11-08 16:30:33,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:30:33,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:30:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:30:33,966 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 16:30:33,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:30:33,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206003609] [2024-11-08 16:30:33,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206003609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:30:33,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:30:33,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:30:33,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531754613] [2024-11-08 16:30:33,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:30:33,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:30:33,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:30:34,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:30:34,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:30:34,020 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 52 [2024-11-08 16:30:34,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 16:30:34,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:30:34,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 52 [2024-11-08 16:30:34,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:30:35,355 INFO L124 PetriNetUnfolderBase]: 5420/7720 cut-off events. [2024-11-08 16:30:35,356 INFO L125 PetriNetUnfolderBase]: For 512/512 co-relation queries the response was YES. [2024-11-08 16:30:35,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14951 conditions, 7720 events. 5420/7720 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 42641 event pairs, 1020 based on Foata normal form. 1/7217 useless extension candidates. Maximal degree in co-relation 13329. Up to 5288 conditions per place. [2024-11-08 16:30:35,458 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 51 selfloop transitions, 5 changer transitions 1/72 dead transitions. [2024-11-08 16:30:35,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 72 transitions, 303 flow [2024-11-08 16:30:35,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:30:35,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:30:35,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2024-11-08 16:30:35,529 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7371794871794872 [2024-11-08 16:30:35,532 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 118 flow. Second operand 3 states and 115 transitions. [2024-11-08 16:30:35,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 72 transitions, 303 flow [2024-11-08 16:30:35,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 72 transitions, 273 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-08 16:30:35,567 INFO L231 Difference]: Finished difference. Result has 47 places, 51 transitions, 135 flow [2024-11-08 16:30:35,569 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=47, PETRI_TRANSITIONS=51} [2024-11-08 16:30:35,577 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -5 predicate places. [2024-11-08 16:30:35,578 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 51 transitions, 135 flow [2024-11-08 16:30:35,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 16:30:35,579 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:30:35,580 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, 1] [2024-11-08 16:30:35,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:30:35,580 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 2 more)] === [2024-11-08 16:30:35,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:30:35,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1715807182, now seen corresponding path program 1 times [2024-11-08 16:30:35,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:30:35,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486895109] [2024-11-08 16:30:35,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:30:35,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:30:35,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:30:35,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:30:35,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:30:35,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486895109] [2024-11-08 16:30:35,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486895109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:30:35,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:30:35,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:30:35,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32271769] [2024-11-08 16:30:35,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:30:35,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:30:35,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:30:35,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:30:35,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:30:35,945 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-11-08 16:30:35,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 51 transitions, 135 flow. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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 16:30:35,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:30:35,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-11-08 16:30:35,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:30:39,738 INFO L124 PetriNetUnfolderBase]: 24299/32090 cut-off events. [2024-11-08 16:30:39,739 INFO L125 PetriNetUnfolderBase]: For 3376/3405 co-relation queries the response was YES. [2024-11-08 16:30:39,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69355 conditions, 32090 events. 24299/32090 cut-off events. For 3376/3405 co-relation queries the response was YES. Maximal size of possible extension queue 1532. Compared 185015 event pairs, 5744 based on Foata normal form. 2/28203 useless extension candidates. Maximal degree in co-relation 12091. Up to 12801 conditions per place. [2024-11-08 16:30:40,007 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 145 selfloop transitions, 18 changer transitions 0/172 dead transitions. [2024-11-08 16:30:40,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 172 transitions, 790 flow [2024-11-08 16:30:40,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:30:40,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 16:30:40,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 227 transitions. [2024-11-08 16:30:40,011 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7275641025641025 [2024-11-08 16:30:40,011 INFO L175 Difference]: Start difference. First operand has 47 places, 51 transitions, 135 flow. Second operand 6 states and 227 transitions. [2024-11-08 16:30:40,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 172 transitions, 790 flow [2024-11-08 16:30:40,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 172 transitions, 770 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:30:40,020 INFO L231 Difference]: Finished difference. Result has 55 places, 68 transitions, 263 flow [2024-11-08 16:30:40,021 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=263, PETRI_PLACES=55, PETRI_TRANSITIONS=68} [2024-11-08 16:30:40,022 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2024-11-08 16:30:40,022 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 68 transitions, 263 flow [2024-11-08 16:30:40,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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 16:30:40,023 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:30:40,024 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, 1] [2024-11-08 16:30:40,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:30:40,025 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 2 more)] === [2024-11-08 16:30:40,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:30:40,027 INFO L85 PathProgramCache]: Analyzing trace with hash 2041359294, now seen corresponding path program 1 times [2024-11-08 16:30:40,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:30:40,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886155022] [2024-11-08 16:30:40,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:30:40,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:30:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:30:40,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:30:40,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:30:40,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886155022] [2024-11-08 16:30:40,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886155022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:30:40,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:30:40,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:30:40,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896958878] [2024-11-08 16:30:40,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:30:40,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:30:40,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:30:40,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:30:40,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:30:40,260 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 52 [2024-11-08 16:30:40,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 68 transitions, 263 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 16:30:40,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:30:40,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 52 [2024-11-08 16:30:40,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:30:42,220 INFO L124 PetriNetUnfolderBase]: 11239/16015 cut-off events. [2024-11-08 16:30:42,220 INFO L125 PetriNetUnfolderBase]: For 8552/10360 co-relation queries the response was YES. [2024-11-08 16:30:42,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40739 conditions, 16015 events. 11239/16015 cut-off events. For 8552/10360 co-relation queries the response was YES. Maximal size of possible extension queue 887. Compared 98276 event pairs, 4072 based on Foata normal form. 463/15225 useless extension candidates. Maximal degree in co-relation 15198. Up to 8477 conditions per place. [2024-11-08 16:30:42,358 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 68 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2024-11-08 16:30:42,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 92 transitions, 474 flow [2024-11-08 16:30:42,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:30:42,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:30:42,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2024-11-08 16:30:42,363 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7371794871794872 [2024-11-08 16:30:42,363 INFO L175 Difference]: Start difference. First operand has 55 places, 68 transitions, 263 flow. Second operand 3 states and 115 transitions. [2024-11-08 16:30:42,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 92 transitions, 474 flow [2024-11-08 16:30:42,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 92 transitions, 474 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 16:30:42,376 INFO L231 Difference]: Finished difference. Result has 58 places, 67 transitions, 270 flow [2024-11-08 16:30:42,378 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=58, PETRI_TRANSITIONS=67} [2024-11-08 16:30:42,379 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 6 predicate places. [2024-11-08 16:30:42,379 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 67 transitions, 270 flow [2024-11-08 16:30:42,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 16:30:42,380 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:30:42,380 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, 1] [2024-11-08 16:30:42,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 16:30:42,380 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 2 more)] === [2024-11-08 16:30:42,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:30:42,382 INFO L85 PathProgramCache]: Analyzing trace with hash 981988498, now seen corresponding path program 1 times [2024-11-08 16:30:42,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:30:42,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566250095] [2024-11-08 16:30:42,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:30:42,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:30:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:30:42,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:30:42,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:30:42,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566250095] [2024-11-08 16:30:42,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566250095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:30:42,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:30:42,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:30:42,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409998572] [2024-11-08 16:30:42,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:30:42,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:30:42,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:30:42,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:30:42,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:30:42,616 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-11-08 16:30:42,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 67 transitions, 270 flow. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 16:30:42,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:30:42,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-11-08 16:30:42,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:30:45,438 INFO L124 PetriNetUnfolderBase]: 21156/29102 cut-off events. [2024-11-08 16:30:45,439 INFO L125 PetriNetUnfolderBase]: For 21558/21867 co-relation queries the response was YES. [2024-11-08 16:30:45,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81471 conditions, 29102 events. 21156/29102 cut-off events. For 21558/21867 co-relation queries the response was YES. Maximal size of possible extension queue 1402. Compared 181878 event pairs, 5778 based on Foata normal form. 188/27650 useless extension candidates. Maximal degree in co-relation 34080. Up to 13506 conditions per place. [2024-11-08 16:30:45,735 INFO L140 encePairwiseOnDemand]: 44/52 looper letters, 139 selfloop transitions, 19 changer transitions 0/171 dead transitions. [2024-11-08 16:30:45,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 171 transitions, 895 flow [2024-11-08 16:30:45,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 16:30:45,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 16:30:45,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 241 transitions. [2024-11-08 16:30:45,738 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6620879120879121 [2024-11-08 16:30:45,738 INFO L175 Difference]: Start difference. First operand has 58 places, 67 transitions, 270 flow. Second operand 7 states and 241 transitions. [2024-11-08 16:30:45,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 171 transitions, 895 flow [2024-11-08 16:30:45,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 171 transitions, 892 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:30:45,805 INFO L231 Difference]: Finished difference. Result has 68 places, 75 transitions, 384 flow [2024-11-08 16:30:45,807 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=384, PETRI_PLACES=68, PETRI_TRANSITIONS=75} [2024-11-08 16:30:45,808 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 16 predicate places. [2024-11-08 16:30:45,810 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 75 transitions, 384 flow [2024-11-08 16:30:45,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 16:30:45,811 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:30:45,811 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, 1] [2024-11-08 16:30:45,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 16:30:45,812 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 2 more)] === [2024-11-08 16:30:45,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:30:45,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1092770526, now seen corresponding path program 2 times [2024-11-08 16:30:45,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:30:45,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527566293] [2024-11-08 16:30:45,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:30:45,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:30:45,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:30:45,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:30:45,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:30:45,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527566293] [2024-11-08 16:30:45,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527566293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:30:45,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:30:45,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:30:45,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193743860] [2024-11-08 16:30:45,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:30:45,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:30:45,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:30:45,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:30:45,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:30:45,979 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-11-08 16:30:45,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 75 transitions, 384 flow. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 16:30:45,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:30:45,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-11-08 16:30:45,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:30:50,166 INFO L124 PetriNetUnfolderBase]: 33520/44889 cut-off events. [2024-11-08 16:30:50,167 INFO L125 PetriNetUnfolderBase]: For 62207/64086 co-relation queries the response was YES. [2024-11-08 16:30:50,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140536 conditions, 44889 events. 33520/44889 cut-off events. For 62207/64086 co-relation queries the response was YES. Maximal size of possible extension queue 1685. Compared 268957 event pairs, 8325 based on Foata normal form. 942/43023 useless extension candidates. Maximal degree in co-relation 56517. Up to 15755 conditions per place. [2024-11-08 16:30:50,663 INFO L140 encePairwiseOnDemand]: 44/52 looper letters, 192 selfloop transitions, 25 changer transitions 0/234 dead transitions. [2024-11-08 16:30:50,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 234 transitions, 1567 flow [2024-11-08 16:30:50,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 16:30:50,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 16:30:50,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 246 transitions. [2024-11-08 16:30:50,666 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6758241758241759 [2024-11-08 16:30:50,666 INFO L175 Difference]: Start difference. First operand has 68 places, 75 transitions, 384 flow. Second operand 7 states and 246 transitions. [2024-11-08 16:30:50,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 234 transitions, 1567 flow [2024-11-08 16:30:51,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 234 transitions, 1546 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-08 16:30:51,011 INFO L231 Difference]: Finished difference. Result has 78 places, 93 transitions, 606 flow [2024-11-08 16:30:51,012 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=606, PETRI_PLACES=78, PETRI_TRANSITIONS=93} [2024-11-08 16:30:51,013 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 26 predicate places. [2024-11-08 16:30:51,013 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 93 transitions, 606 flow [2024-11-08 16:30:51,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 16:30:51,014 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:30:51,014 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, 1] [2024-11-08 16:30:51,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 16:30:51,015 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 2 more)] === [2024-11-08 16:30:51,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:30:51,016 INFO L85 PathProgramCache]: Analyzing trace with hash -804902396, now seen corresponding path program 3 times [2024-11-08 16:30:51,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:30:51,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137954768] [2024-11-08 16:30:51,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:30:51,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:30:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:30:51,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:30:51,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:30:51,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137954768] [2024-11-08 16:30:51,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137954768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:30:51,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:30:51,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:30:51,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982273932] [2024-11-08 16:30:51,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:30:51,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:30:51,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:30:51,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:30:51,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:30:51,230 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-11-08 16:30:51,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 93 transitions, 606 flow. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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 16:30:51,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:30:51,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-11-08 16:30:51,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:30:58,468 INFO L124 PetriNetUnfolderBase]: 52152/70464 cut-off events. [2024-11-08 16:30:58,468 INFO L125 PetriNetUnfolderBase]: For 205097/210130 co-relation queries the response was YES. [2024-11-08 16:30:58,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248907 conditions, 70464 events. 52152/70464 cut-off events. For 205097/210130 co-relation queries the response was YES. Maximal size of possible extension queue 2835. Compared 457568 event pairs, 12486 based on Foata normal form. 521/66261 useless extension candidates. Maximal degree in co-relation 107396. Up to 33171 conditions per place. [2024-11-08 16:30:59,122 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 182 selfloop transitions, 50 changer transitions 0/245 dead transitions. [2024-11-08 16:30:59,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 245 transitions, 1957 flow [2024-11-08 16:30:59,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:30:59,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 16:30:59,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 222 transitions. [2024-11-08 16:30:59,124 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7115384615384616 [2024-11-08 16:30:59,125 INFO L175 Difference]: Start difference. First operand has 78 places, 93 transitions, 606 flow. Second operand 6 states and 222 transitions. [2024-11-08 16:30:59,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 245 transitions, 1957 flow [2024-11-08 16:31:00,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 245 transitions, 1957 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 16:31:00,713 INFO L231 Difference]: Finished difference. Result has 87 places, 129 transitions, 1122 flow [2024-11-08 16:31:00,714 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1122, PETRI_PLACES=87, PETRI_TRANSITIONS=129} [2024-11-08 16:31:00,715 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 35 predicate places. [2024-11-08 16:31:00,715 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 129 transitions, 1122 flow [2024-11-08 16:31:00,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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 16:31:00,716 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:31:00,716 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, 1] [2024-11-08 16:31:00,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 16:31:00,716 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-08 16:31:00,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:31:00,717 INFO L85 PathProgramCache]: Analyzing trace with hash -242557920, now seen corresponding path program 4 times [2024-11-08 16:31:00,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:31:00,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612513255] [2024-11-08 16:31:00,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:31:00,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:31:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:31:00,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:31:00,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:31:00,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612513255] [2024-11-08 16:31:00,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612513255] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:31:00,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:31:00,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:31:00,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318185134] [2024-11-08 16:31:00,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:31:00,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:31:00,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:31:00,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:31:00,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:31:00,906 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-11-08 16:31:00,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 129 transitions, 1122 flow. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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 16:31:00,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:31:00,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-11-08 16:31:00,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:31:12,480 INFO L124 PetriNetUnfolderBase]: 76469/100513 cut-off events. [2024-11-08 16:31:12,480 INFO L125 PetriNetUnfolderBase]: For 416744/425696 co-relation queries the response was YES. [2024-11-08 16:31:13,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404528 conditions, 100513 events. 76469/100513 cut-off events. For 416744/425696 co-relation queries the response was YES. Maximal size of possible extension queue 3717. Compared 633242 event pairs, 22911 based on Foata normal form. 3090/98769 useless extension candidates. Maximal degree in co-relation 169160. Up to 43783 conditions per place. [2024-11-08 16:31:13,468 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 204 selfloop transitions, 42 changer transitions 0/259 dead transitions. [2024-11-08 16:31:13,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 259 transitions, 2566 flow [2024-11-08 16:31:13,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:31:13,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 16:31:13,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 173 transitions. [2024-11-08 16:31:13,470 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6653846153846154 [2024-11-08 16:31:13,470 INFO L175 Difference]: Start difference. First operand has 87 places, 129 transitions, 1122 flow. Second operand 5 states and 173 transitions. [2024-11-08 16:31:13,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 259 transitions, 2566 flow [2024-11-08 16:31:20,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 259 transitions, 2548 flow, removed 9 selfloop flow, removed 0 redundant places. [2024-11-08 16:31:20,051 INFO L231 Difference]: Finished difference. Result has 94 places, 138 transitions, 1354 flow [2024-11-08 16:31:20,051 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1098, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1354, PETRI_PLACES=94, PETRI_TRANSITIONS=138} [2024-11-08 16:31:20,052 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 42 predicate places. [2024-11-08 16:31:20,052 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 138 transitions, 1354 flow [2024-11-08 16:31:20,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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 16:31:20,053 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:31:20,053 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, 1] [2024-11-08 16:31:20,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 16:31:20,054 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-08 16:31:20,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:31:20,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1689693392, now seen corresponding path program 2 times [2024-11-08 16:31:20,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:31:20,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295939190] [2024-11-08 16:31:20,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:31:20,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:31:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:31:20,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:31:20,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:31:20,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295939190] [2024-11-08 16:31:20,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295939190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:31:20,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:31:20,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 16:31:20,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405566900] [2024-11-08 16:31:20,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:31:20,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:31:20,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:31:20,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:31:20,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:31:20,225 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-11-08 16:31:20,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 138 transitions, 1354 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 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 16:31:20,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:31:20,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-11-08 16:31:20,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand