./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix036.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_b93dc180-feb3-4e98-9dd4-7c38be5ad3f8/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b93dc180-feb3-4e98-9dd4-7c38be5ad3f8/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b93dc180-feb3-4e98-9dd4-7c38be5ad3f8/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b93dc180-feb3-4e98-9dd4-7c38be5ad3f8/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix036.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b93dc180-feb3-4e98-9dd4-7c38be5ad3f8/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b93dc180-feb3-4e98-9dd4-7c38be5ad3f8/bin/uautomizer-verify-VRDe98Ueme --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 e3d3e405a2d3cb3ab8b02ed87788ef59412b7b81517118cc37c044f334087868 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:49:41,543 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:49:41,616 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b93dc180-feb3-4e98-9dd4-7c38be5ad3f8/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:49:41,622 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:49:41,623 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:49:41,650 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:49:41,651 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:49:41,652 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:49:41,652 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:49:41,653 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:49:41,654 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:49:41,654 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:49:41,655 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:49:41,656 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:49:41,656 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:49:41,657 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:49:41,657 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:49:41,658 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:49:41,658 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:49:41,659 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:49:41,659 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:49:41,660 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:49:41,660 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:49:41,661 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:49:41,661 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:49:41,662 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:49:41,662 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:49:41,663 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:49:41,663 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:49:41,663 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:49:41,664 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:49:41,664 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:49:41,665 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:49:41,665 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:49:41,665 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:49:41,666 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:49:41,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:49:41,667 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:49:41,667 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:49:41,667 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:49:41,668 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:49:41,673 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:49:41,673 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_b93dc180-feb3-4e98-9dd4-7c38be5ad3f8/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b93dc180-feb3-4e98-9dd4-7c38be5ad3f8/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3d3e405a2d3cb3ab8b02ed87788ef59412b7b81517118cc37c044f334087868 [2023-11-26 10:49:41,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:49:41,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:49:41,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:49:41,960 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:49:41,961 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:49:41,962 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b93dc180-feb3-4e98-9dd4-7c38be5ad3f8/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-wmm/mix036.oepc.i [2023-11-26 10:49:45,075 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:49:45,446 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:49:45,448 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b93dc180-feb3-4e98-9dd4-7c38be5ad3f8/sv-benchmarks/c/pthread-wmm/mix036.oepc.i [2023-11-26 10:49:45,473 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b93dc180-feb3-4e98-9dd4-7c38be5ad3f8/bin/uautomizer-verify-VRDe98Ueme/data/cc14a11e3/b6d8bdb580014935865488bd900066ad/FLAGeec3a6f5f [2023-11-26 10:49:45,491 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b93dc180-feb3-4e98-9dd4-7c38be5ad3f8/bin/uautomizer-verify-VRDe98Ueme/data/cc14a11e3/b6d8bdb580014935865488bd900066ad [2023-11-26 10:49:45,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:49:45,500 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:49:45,504 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:49:45,504 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:49:45,510 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:49:45,511 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:49:45" (1/1) ... [2023-11-26 10:49:45,512 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6be14206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:45, skipping insertion in model container [2023-11-26 10:49:45,513 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:49:45" (1/1) ... [2023-11-26 10:49:45,599 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:49:45,831 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b93dc180-feb3-4e98-9dd4-7c38be5ad3f8/sv-benchmarks/c/pthread-wmm/mix036.oepc.i[945,958] [2023-11-26 10:49:46,109 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:49:46,120 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:49:46,134 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b93dc180-feb3-4e98-9dd4-7c38be5ad3f8/sv-benchmarks/c/pthread-wmm/mix036.oepc.i[945,958] [2023-11-26 10:49:46,249 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:49:46,292 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:49:46,292 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:49:46,300 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:49:46,301 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:46 WrapperNode [2023-11-26 10:49:46,301 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:49:46,302 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:49:46,302 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:49:46,302 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:49:46,308 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:46" (1/1) ... [2023-11-26 10:49:46,336 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:46" (1/1) ... [2023-11-26 10:49:46,366 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 146 [2023-11-26 10:49:46,366 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:49:46,367 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:49:46,367 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:49:46,367 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:49:46,379 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:46" (1/1) ... [2023-11-26 10:49:46,380 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:46" (1/1) ... [2023-11-26 10:49:46,385 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:46" (1/1) ... [2023-11-26 10:49:46,404 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2023-11-26 10:49:46,404 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:46" (1/1) ... [2023-11-26 10:49:46,404 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:46" (1/1) ... [2023-11-26 10:49:46,416 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:46" (1/1) ... [2023-11-26 10:49:46,418 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:46" (1/1) ... [2023-11-26 10:49:46,421 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:46" (1/1) ... [2023-11-26 10:49:46,423 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:46" (1/1) ... [2023-11-26 10:49:46,428 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:49:46,429 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:49:46,429 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:49:46,429 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:49:46,430 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:46" (1/1) ... [2023-11-26 10:49:46,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:49:46,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b93dc180-feb3-4e98-9dd4-7c38be5ad3f8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:49:46,465 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b93dc180-feb3-4e98-9dd4-7c38be5ad3f8/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:49:46,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b93dc180-feb3-4e98-9dd4-7c38be5ad3f8/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:49:46,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 10:49:46,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 10:49:46,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 10:49:46,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 10:49:46,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 10:49:46,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 10:49:46,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:49:46,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:49:46,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:49:46,509 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-26 10:49:46,510 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-26 10:49:46,510 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-26 10:49:46,510 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-26 10:49:46,510 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-26 10:49:46,510 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-26 10:49:46,511 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-26 10:49:46,511 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-26 10:49:46,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:49:46,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:49:46,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 10:49:46,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 10:49:46,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 10:49:46,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 10:49:46,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:49:46,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:49:46,516 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 10:49:46,765 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:49:46,767 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:49:47,155 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:49:47,420 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:49:47,421 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 10:49:47,421 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:49:47 BoogieIcfgContainer [2023-11-26 10:49:47,421 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:49:47,424 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:49:47,425 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:49:47,428 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:49:47,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:49:45" (1/3) ... [2023-11-26 10:49:47,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78525444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:49:47, skipping insertion in model container [2023-11-26 10:49:47,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:46" (2/3) ... [2023-11-26 10:49:47,430 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78525444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:49:47, skipping insertion in model container [2023-11-26 10:49:47,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:49:47" (3/3) ... [2023-11-26 10:49:47,432 INFO L112 eAbstractionObserver]: Analyzing ICFG mix036.oepc.i [2023-11-26 10:49:47,441 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 10:49:47,452 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:49:47,452 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-26 10:49:47,452 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 10:49:47,526 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 10:49:47,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2023-11-26 10:49:47,600 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2023-11-26 10:49:47,601 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:49:47,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 95 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-11-26 10:49:47,605 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2023-11-26 10:49:47,609 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2023-11-26 10:49:47,619 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:49:47,626 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@33ab4cf0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:49:47,626 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-26 10:49:47,631 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:49:47,631 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-26 10:49:47,631 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:49:47,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:49:47,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-26 10:49:47,633 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:49:47,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:47,638 INFO L85 PathProgramCache]: Analyzing trace with hash 12517205, now seen corresponding path program 1 times [2023-11-26 10:49:47,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:47,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203899867] [2023-11-26 10:49:47,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:47,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:47,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:48,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:48,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:48,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203899867] [2023-11-26 10:49:48,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203899867] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:48,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:48,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 10:49:48,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494142040] [2023-11-26 10:49:48,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:48,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:49:48,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:48,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:49:48,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:49:48,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2023-11-26 10:49:48,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-11-26 10:49:48,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:49:48,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2023-11-26 10:49:48,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:49:49,449 INFO L124 PetriNetUnfolderBase]: 2495/3975 cut-off events. [2023-11-26 10:49:49,449 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-11-26 10:49:49,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7551 conditions, 3975 events. 2495/3975 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 24917 event pairs, 1647 based on Foata normal form. 135/4044 useless extension candidates. Maximal degree in co-relation 7539. Up to 2779 conditions per place. [2023-11-26 10:49:49,498 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 37 selfloop transitions, 2 changer transitions 2/62 dead transitions. [2023-11-26 10:49:49,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 227 flow [2023-11-26 10:49:49,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:49:49,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:49:49,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2023-11-26 10:49:49,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7933333333333333 [2023-11-26 10:49:49,513 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 119 transitions. [2023-11-26 10:49:49,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 119 transitions. [2023-11-26 10:49:49,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:49:49,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 119 transitions. [2023-11-26 10:49:49,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2023-11-26 10:49:49,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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) [2023-11-26 10:49:49,528 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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) [2023-11-26 10:49:49,530 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 119 transitions. [2023-11-26 10:49:49,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 227 flow [2023-11-26 10:49:49,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 220 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 10:49:49,545 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2023-11-26 10:49:49,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2023-11-26 10:49:49,552 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2023-11-26 10:49:49,552 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2023-11-26 10:49:49,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-11-26 10:49:49,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:49:49,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:49,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:49:49,554 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:49:49,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:49,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1224188913, now seen corresponding path program 1 times [2023-11-26 10:49:49,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:49,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805471023] [2023-11-26 10:49:49,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:49,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:50,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:50,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:50,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805471023] [2023-11-26 10:49:50,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805471023] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:50,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:50,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:49:50,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477860810] [2023-11-26 10:49:50,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:50,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:49:50,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:50,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:49:50,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:49:50,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 50 [2023-11-26 10:49:50,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 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) [2023-11-26 10:49:50,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:49:50,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 50 [2023-11-26 10:49:50,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:49:53,853 INFO L124 PetriNetUnfolderBase]: 13249/19040 cut-off events. [2023-11-26 10:49:53,853 INFO L125 PetriNetUnfolderBase]: For 918/918 co-relation queries the response was YES. [2023-11-26 10:49:53,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38026 conditions, 19040 events. 13249/19040 cut-off events. For 918/918 co-relation queries the response was YES. Maximal size of possible extension queue 990. Compared 127654 event pairs, 6626 based on Foata normal form. 0/18622 useless extension candidates. Maximal degree in co-relation 38016. Up to 11671 conditions per place. [2023-11-26 10:49:54,032 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 37 selfloop transitions, 5 changer transitions 58/114 dead transitions. [2023-11-26 10:49:54,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 114 transitions, 458 flow [2023-11-26 10:49:54,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:49:54,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 10:49:54,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 246 transitions. [2023-11-26 10:49:54,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.615 [2023-11-26 10:49:54,037 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 246 transitions. [2023-11-26 10:49:54,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 246 transitions. [2023-11-26 10:49:54,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:49:54,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 246 transitions. [2023-11-26 10:49:54,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 30.75) internal successors, (246), 8 states have internal predecessors, (246), 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) [2023-11-26 10:49:54,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 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) [2023-11-26 10:49:54,044 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 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) [2023-11-26 10:49:54,044 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 8 states and 246 transitions. [2023-11-26 10:49:54,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 114 transitions, 458 flow [2023-11-26 10:49:54,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 114 transitions, 442 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 10:49:54,049 INFO L231 Difference]: Finished difference. Result has 64 places, 46 transitions, 149 flow [2023-11-26 10:49:54,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=149, PETRI_PLACES=64, PETRI_TRANSITIONS=46} [2023-11-26 10:49:54,050 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 6 predicate places. [2023-11-26 10:49:54,050 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 46 transitions, 149 flow [2023-11-26 10:49:54,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 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) [2023-11-26 10:49:54,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:49:54,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:54,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:49:54,052 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:49:54,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:54,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1290404324, now seen corresponding path program 1 times [2023-11-26 10:49:54,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:54,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477093058] [2023-11-26 10:49:54,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:54,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:54,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:54,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:54,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477093058] [2023-11-26 10:49:54,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477093058] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:54,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:54,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:49:54,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146945790] [2023-11-26 10:49:54,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:54,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:49:54,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:54,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:49:54,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:49:54,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 50 [2023-11-26 10:49:54,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 46 transitions, 149 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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) [2023-11-26 10:49:54,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:49:54,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 50 [2023-11-26 10:49:54,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:49:57,138 INFO L124 PetriNetUnfolderBase]: 10019/14610 cut-off events. [2023-11-26 10:49:57,139 INFO L125 PetriNetUnfolderBase]: For 15061/15143 co-relation queries the response was YES. [2023-11-26 10:49:57,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39543 conditions, 14610 events. 10019/14610 cut-off events. For 15061/15143 co-relation queries the response was YES. Maximal size of possible extension queue 725. Compared 93917 event pairs, 1683 based on Foata normal form. 390/14916 useless extension candidates. Maximal degree in co-relation 39528. Up to 9073 conditions per place. [2023-11-26 10:49:57,274 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 42 selfloop transitions, 3 changer transitions 51/110 dead transitions. [2023-11-26 10:49:57,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 110 transitions, 581 flow [2023-11-26 10:49:57,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:49:57,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 10:49:57,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 220 transitions. [2023-11-26 10:49:57,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2023-11-26 10:49:57,279 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 220 transitions. [2023-11-26 10:49:57,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 220 transitions. [2023-11-26 10:49:57,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:49:57,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 220 transitions. [2023-11-26 10:49:57,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 31.428571428571427) internal successors, (220), 7 states have internal predecessors, (220), 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) [2023-11-26 10:49:57,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 50.0) internal successors, (400), 8 states have internal predecessors, (400), 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) [2023-11-26 10:49:57,285 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 50.0) internal successors, (400), 8 states have internal predecessors, (400), 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) [2023-11-26 10:49:57,286 INFO L175 Difference]: Start difference. First operand has 64 places, 46 transitions, 149 flow. Second operand 7 states and 220 transitions. [2023-11-26 10:49:57,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 110 transitions, 581 flow [2023-11-26 10:49:57,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 110 transitions, 568 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-26 10:49:57,558 INFO L231 Difference]: Finished difference. Result has 66 places, 46 transitions, 159 flow [2023-11-26 10:49:57,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=159, PETRI_PLACES=66, PETRI_TRANSITIONS=46} [2023-11-26 10:49:57,560 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 8 predicate places. [2023-11-26 10:49:57,560 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 46 transitions, 159 flow [2023-11-26 10:49:57,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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) [2023-11-26 10:49:57,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:49:57,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:57,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:49:57,561 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:49:57,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:57,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1134296521, now seen corresponding path program 1 times [2023-11-26 10:49:57,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:57,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014418344] [2023-11-26 10:49:57,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:57,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:57,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:57,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:57,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:57,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014418344] [2023-11-26 10:49:57,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014418344] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:57,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:57,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:49:57,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10802960] [2023-11-26 10:49:57,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:57,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:49:57,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:57,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:49:57,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:49:57,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2023-11-26 10:49:57,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 46 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 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) [2023-11-26 10:49:57,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:49:57,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2023-11-26 10:49:57,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:50:01,231 INFO L124 PetriNetUnfolderBase]: 13591/20384 cut-off events. [2023-11-26 10:50:01,231 INFO L125 PetriNetUnfolderBase]: For 9680/9854 co-relation queries the response was YES. [2023-11-26 10:50:01,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46545 conditions, 20384 events. 13591/20384 cut-off events. For 9680/9854 co-relation queries the response was YES. Maximal size of possible extension queue 1190. Compared 144666 event pairs, 2468 based on Foata normal form. 681/20226 useless extension candidates. Maximal degree in co-relation 46526. Up to 9547 conditions per place. [2023-11-26 10:50:01,446 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 53 selfloop transitions, 6 changer transitions 0/78 dead transitions. [2023-11-26 10:50:01,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 78 transitions, 347 flow [2023-11-26 10:50:01,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:50:01,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:50:01,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2023-11-26 10:50:01,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.705 [2023-11-26 10:50:01,449 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 141 transitions. [2023-11-26 10:50:01,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 141 transitions. [2023-11-26 10:50:01,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:50:01,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 141 transitions. [2023-11-26 10:50:01,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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) [2023-11-26 10:50:01,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 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) [2023-11-26 10:50:01,452 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 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) [2023-11-26 10:50:01,453 INFO L175 Difference]: Start difference. First operand has 66 places, 46 transitions, 159 flow. Second operand 4 states and 141 transitions. [2023-11-26 10:50:01,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 78 transitions, 347 flow [2023-11-26 10:50:01,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 78 transitions, 333 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-11-26 10:50:01,898 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 191 flow [2023-11-26 10:50:01,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=191, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2023-11-26 10:50:01,899 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 3 predicate places. [2023-11-26 10:50:01,900 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 191 flow [2023-11-26 10:50:01,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 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) [2023-11-26 10:50:01,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:50:01,900 INFO L208 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] [2023-11-26 10:50:01,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 10:50:01,901 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:50:01,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:50:01,901 INFO L85 PathProgramCache]: Analyzing trace with hash -690455295, now seen corresponding path program 1 times [2023-11-26 10:50:01,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:50:01,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374864334] [2023-11-26 10:50:01,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:01,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:50:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:02,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:50:02,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:50:02,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374864334] [2023-11-26 10:50:02,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374864334] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:50:02,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:50:02,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:50:02,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208899893] [2023-11-26 10:50:02,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:50:02,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:50:02,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:50:02,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:50:02,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:50:02,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2023-11-26 10:50:02,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 191 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) [2023-11-26 10:50:02,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:50:02,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2023-11-26 10:50:02,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:50:04,749 INFO L124 PetriNetUnfolderBase]: 11180/16781 cut-off events. [2023-11-26 10:50:04,749 INFO L125 PetriNetUnfolderBase]: For 5966/6074 co-relation queries the response was YES. [2023-11-26 10:50:04,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40662 conditions, 16781 events. 11180/16781 cut-off events. For 5966/6074 co-relation queries the response was YES. Maximal size of possible extension queue 897. Compared 114043 event pairs, 1459 based on Foata normal form. 602/16678 useless extension candidates. Maximal degree in co-relation 40645. Up to 5576 conditions per place. [2023-11-26 10:50:04,901 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 69 selfloop transitions, 10 changer transitions 0/98 dead transitions. [2023-11-26 10:50:04,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 98 transitions, 472 flow [2023-11-26 10:50:04,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:50:04,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 10:50:04,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 181 transitions. [2023-11-26 10:50:04,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.724 [2023-11-26 10:50:04,904 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 181 transitions. [2023-11-26 10:50:04,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 181 transitions. [2023-11-26 10:50:04,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:50:04,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 181 transitions. [2023-11-26 10:50:04,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 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) [2023-11-26 10:50:04,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 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) [2023-11-26 10:50:04,908 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 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) [2023-11-26 10:50:04,909 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 191 flow. Second operand 5 states and 181 transitions. [2023-11-26 10:50:04,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 98 transitions, 472 flow [2023-11-26 10:50:04,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 98 transitions, 469 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:50:04,914 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 256 flow [2023-11-26 10:50:04,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=256, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2023-11-26 10:50:04,917 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 8 predicate places. [2023-11-26 10:50:04,918 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 256 flow [2023-11-26 10:50:04,918 INFO L496 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) [2023-11-26 10:50:04,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:50:04,918 INFO L208 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] [2023-11-26 10:50:04,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 10:50:04,919 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:50:04,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:50:04,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1926609565, now seen corresponding path program 1 times [2023-11-26 10:50:04,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:50:04,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022167247] [2023-11-26 10:50:04,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:04,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:50:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:05,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:50:05,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:50:05,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022167247] [2023-11-26 10:50:05,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022167247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:50:05,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:50:05,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:50:05,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19250682] [2023-11-26 10:50:05,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:50:05,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:50:05,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:50:05,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:50:05,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:50:05,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 50 [2023-11-26 10:50:05,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 256 flow. Second operand has 8 states, 8 states have (on average 20.5) internal successors, (164), 8 states have internal predecessors, (164), 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) [2023-11-26 10:50:05,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:50:05,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 50 [2023-11-26 10:50:05,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:50:11,151 INFO L124 PetriNetUnfolderBase]: 20798/32330 cut-off events. [2023-11-26 10:50:11,151 INFO L125 PetriNetUnfolderBase]: For 39567/43765 co-relation queries the response was YES. [2023-11-26 10:50:11,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92327 conditions, 32330 events. 20798/32330 cut-off events. For 39567/43765 co-relation queries the response was YES. Maximal size of possible extension queue 1707. Compared 257215 event pairs, 4640 based on Foata normal form. 659/31044 useless extension candidates. Maximal degree in co-relation 92307. Up to 10809 conditions per place. [2023-11-26 10:50:11,535 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 148 selfloop transitions, 32 changer transitions 12/216 dead transitions. [2023-11-26 10:50:11,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 216 transitions, 1210 flow [2023-11-26 10:50:11,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 10:50:11,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-26 10:50:11,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 465 transitions. [2023-11-26 10:50:11,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.62 [2023-11-26 10:50:11,540 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 465 transitions. [2023-11-26 10:50:11,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 465 transitions. [2023-11-26 10:50:11,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:50:11,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 465 transitions. [2023-11-26 10:50:11,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 31.0) internal successors, (465), 15 states have internal predecessors, (465), 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) [2023-11-26 10:50:11,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 50.0) internal successors, (800), 16 states have internal predecessors, (800), 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) [2023-11-26 10:50:11,546 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 50.0) internal successors, (800), 16 states have internal predecessors, (800), 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) [2023-11-26 10:50:11,546 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 256 flow. Second operand 15 states and 465 transitions. [2023-11-26 10:50:11,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 216 transitions, 1210 flow [2023-11-26 10:50:11,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 216 transitions, 1195 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-26 10:50:11,566 INFO L231 Difference]: Finished difference. Result has 88 places, 82 transitions, 515 flow [2023-11-26 10:50:11,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=515, PETRI_PLACES=88, PETRI_TRANSITIONS=82} [2023-11-26 10:50:11,569 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 30 predicate places. [2023-11-26 10:50:11,569 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 82 transitions, 515 flow [2023-11-26 10:50:11,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.5) internal successors, (164), 8 states have internal predecessors, (164), 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) [2023-11-26 10:50:11,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:50:11,570 INFO L208 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] [2023-11-26 10:50:11,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 10:50:11,570 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:50:11,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:50:11,571 INFO L85 PathProgramCache]: Analyzing trace with hash 24567877, now seen corresponding path program 2 times [2023-11-26 10:50:11,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:50:11,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280078236] [2023-11-26 10:50:11,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:11,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:50:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:11,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:50:11,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:50:11,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280078236] [2023-11-26 10:50:11,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280078236] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:50:11,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:50:11,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:50:11,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965856453] [2023-11-26 10:50:11,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:50:11,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:50:11,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:50:11,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:50:11,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:50:11,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2023-11-26 10:50:11,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 82 transitions, 515 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) [2023-11-26 10:50:11,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:50:11,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2023-11-26 10:50:11,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:50:16,405 INFO L124 PetriNetUnfolderBase]: 22038/32642 cut-off events. [2023-11-26 10:50:16,405 INFO L125 PetriNetUnfolderBase]: For 56426/58818 co-relation queries the response was YES. [2023-11-26 10:50:16,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106058 conditions, 32642 events. 22038/32642 cut-off events. For 56426/58818 co-relation queries the response was YES. Maximal size of possible extension queue 1231. Compared 223229 event pairs, 1872 based on Foata normal form. 1661/33526 useless extension candidates. Maximal degree in co-relation 106028. Up to 10948 conditions per place. [2023-11-26 10:50:16,861 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 117 selfloop transitions, 14 changer transitions 10/170 dead transitions. [2023-11-26 10:50:16,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 170 transitions, 1193 flow [2023-11-26 10:50:16,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:50:16,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:50:16,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 219 transitions. [2023-11-26 10:50:16,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.73 [2023-11-26 10:50:16,867 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 219 transitions. [2023-11-26 10:50:16,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 219 transitions. [2023-11-26 10:50:16,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:50:16,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 219 transitions. [2023-11-26 10:50:16,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 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) [2023-11-26 10:50:16,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 states have internal predecessors, (350), 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) [2023-11-26 10:50:16,871 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 states have internal predecessors, (350), 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) [2023-11-26 10:50:16,871 INFO L175 Difference]: Start difference. First operand has 88 places, 82 transitions, 515 flow. Second operand 6 states and 219 transitions. [2023-11-26 10:50:16,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 170 transitions, 1193 flow [2023-11-26 10:50:16,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 170 transitions, 1104 flow, removed 30 selfloop flow, removed 4 redundant places. [2023-11-26 10:50:16,976 INFO L231 Difference]: Finished difference. Result has 89 places, 83 transitions, 499 flow [2023-11-26 10:50:16,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=499, PETRI_PLACES=89, PETRI_TRANSITIONS=83} [2023-11-26 10:50:16,978 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 31 predicate places. [2023-11-26 10:50:16,978 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 83 transitions, 499 flow [2023-11-26 10:50:16,978 INFO L496 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) [2023-11-26 10:50:16,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:50:16,979 INFO L208 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, 1, 1] [2023-11-26 10:50:16,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 10:50:16,979 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:50:16,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:50:16,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1165373720, now seen corresponding path program 1 times [2023-11-26 10:50:16,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:50:16,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429704403] [2023-11-26 10:50:16,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:16,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:50:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:17,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:50:17,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:50:17,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429704403] [2023-11-26 10:50:17,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429704403] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:50:17,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:50:17,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:50:17,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208550876] [2023-11-26 10:50:17,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:50:17,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:50:17,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:50:17,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:50:17,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:50:17,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2023-11-26 10:50:17,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 83 transitions, 499 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 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) [2023-11-26 10:50:17,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:50:17,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2023-11-26 10:50:17,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:50:22,618 INFO L124 PetriNetUnfolderBase]: 23459/37234 cut-off events. [2023-11-26 10:50:22,618 INFO L125 PetriNetUnfolderBase]: For 119877/127884 co-relation queries the response was YES. [2023-11-26 10:50:22,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130197 conditions, 37234 events. 23459/37234 cut-off events. For 119877/127884 co-relation queries the response was YES. Maximal size of possible extension queue 2200. Compared 310186 event pairs, 7779 based on Foata normal form. 1016/34905 useless extension candidates. Maximal degree in co-relation 130167. Up to 13802 conditions per place. [2023-11-26 10:50:22,955 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 115 selfloop transitions, 16 changer transitions 38/197 dead transitions. [2023-11-26 10:50:22,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 197 transitions, 1460 flow [2023-11-26 10:50:22,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:50:22,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 10:50:22,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 254 transitions. [2023-11-26 10:50:22,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.635 [2023-11-26 10:50:22,963 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 254 transitions. [2023-11-26 10:50:22,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 254 transitions. [2023-11-26 10:50:22,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:50:22,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 254 transitions. [2023-11-26 10:50:22,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 31.75) internal successors, (254), 8 states have internal predecessors, (254), 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) [2023-11-26 10:50:22,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 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) [2023-11-26 10:50:22,969 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 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) [2023-11-26 10:50:22,969 INFO L175 Difference]: Start difference. First operand has 89 places, 83 transitions, 499 flow. Second operand 8 states and 254 transitions. [2023-11-26 10:50:22,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 197 transitions, 1460 flow [2023-11-26 10:50:24,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 197 transitions, 1399 flow, removed 23 selfloop flow, removed 5 redundant places. [2023-11-26 10:50:24,085 INFO L231 Difference]: Finished difference. Result has 93 places, 87 transitions, 532 flow [2023-11-26 10:50:24,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=532, PETRI_PLACES=93, PETRI_TRANSITIONS=87} [2023-11-26 10:50:24,086 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 35 predicate places. [2023-11-26 10:50:24,086 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 87 transitions, 532 flow [2023-11-26 10:50:24,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 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) [2023-11-26 10:50:24,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:50:24,087 INFO L208 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, 1, 1] [2023-11-26 10:50:24,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 10:50:24,087 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:50:24,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:50:24,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1527800142, now seen corresponding path program 2 times [2023-11-26 10:50:24,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:50:24,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758839442] [2023-11-26 10:50:24,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:24,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:50:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:25,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:50:25,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:50:25,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758839442] [2023-11-26 10:50:25,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758839442] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:50:25,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:50:25,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 10:50:25,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448562073] [2023-11-26 10:50:25,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:50:25,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:50:25,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:50:25,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:50:25,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:50:25,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2023-11-26 10:50:25,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 87 transitions, 532 flow. Second operand has 9 states, 9 states have (on average 24.11111111111111) internal successors, (217), 9 states have internal predecessors, (217), 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) [2023-11-26 10:50:25,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:50:25,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2023-11-26 10:50:25,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:50:31,770 INFO L124 PetriNetUnfolderBase]: 25738/44189 cut-off events. [2023-11-26 10:50:31,770 INFO L125 PetriNetUnfolderBase]: For 76602/86092 co-relation queries the response was YES. [2023-11-26 10:50:32,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134254 conditions, 44189 events. 25738/44189 cut-off events. For 76602/86092 co-relation queries the response was YES. Maximal size of possible extension queue 3103. Compared 424975 event pairs, 8176 based on Foata normal form. 2195/41791 useless extension candidates. Maximal degree in co-relation 134222. Up to 13399 conditions per place. [2023-11-26 10:50:32,210 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 80 selfloop transitions, 22 changer transitions 20/173 dead transitions. [2023-11-26 10:50:32,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 173 transitions, 1182 flow [2023-11-26 10:50:32,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:50:32,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 10:50:32,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2023-11-26 10:50:32,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.66 [2023-11-26 10:50:32,213 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2023-11-26 10:50:32,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2023-11-26 10:50:32,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:50:32,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2023-11-26 10:50:32,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 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) [2023-11-26 10:50:32,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 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) [2023-11-26 10:50:32,218 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 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) [2023-11-26 10:50:32,218 INFO L175 Difference]: Start difference. First operand has 93 places, 87 transitions, 532 flow. Second operand 9 states and 297 transitions. [2023-11-26 10:50:32,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 173 transitions, 1182 flow