./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a 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_291f730a-64de-4ee1-bd1e-afd80685835f/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291f730a-64de-4ee1-bd1e-afd80685835f/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291f730a-64de-4ee1-bd1e-afd80685835f/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291f730a-64de-4ee1-bd1e-afd80685835f/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291f730a-64de-4ee1-bd1e-afd80685835f/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291f730a-64de-4ee1-bd1e-afd80685835f/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0f1f05cefb3bd84a08d6d936499ca6f215f6edf0bfbf58f9874b646b6408f7c8 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:17:15,335 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:17:15,447 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291f730a-64de-4ee1-bd1e-afd80685835f/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-31 22:17:15,455 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:17:15,456 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:17:15,489 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:17:15,490 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:17:15,490 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:17:15,491 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:17:15,491 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:17:15,492 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:17:15,492 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:17:15,493 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:17:15,493 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:17:15,494 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:17:15,494 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:17:15,495 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:17:15,495 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:17:15,496 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:17:15,496 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:17:15,496 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:17:15,497 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:17:15,497 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:17:15,498 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:17:15,498 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:17:15,498 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-31 22:17:15,499 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:17:15,499 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:17:15,499 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:17:15,500 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:17:15,500 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:17:15,500 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:17:15,501 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:17:15,501 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:17:15,501 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:17:15,502 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:17:15,502 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:17:15,503 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:17:15,503 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:17:15,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:17:15,503 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:17:15,505 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:17:15,505 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:17:15,506 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:17:15,506 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_291f730a-64de-4ee1-bd1e-afd80685835f/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291f730a-64de-4ee1-bd1e-afd80685835f/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f1f05cefb3bd84a08d6d936499ca6f215f6edf0bfbf58f9874b646b6408f7c8 [2024-10-31 22:17:15,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:17:15,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:17:15,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:17:15,836 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:17:15,837 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:17:15,839 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291f730a-64de-4ee1-bd1e-afd80685835f/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c Unable to find full path for "g++" [2024-10-31 22:17:18,377 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:17:18,687 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:17:18,688 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291f730a-64de-4ee1-bd1e-afd80685835f/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2024-10-31 22:17:18,700 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291f730a-64de-4ee1-bd1e-afd80685835f/bin/uautomizer-verify-4GaUIPS5ZU/data/a8ecf12a5/d7fabc34c7a74f4683cee9483ded1b8b/FLAG498d33288 [2024-10-31 22:17:18,720 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291f730a-64de-4ee1-bd1e-afd80685835f/bin/uautomizer-verify-4GaUIPS5ZU/data/a8ecf12a5/d7fabc34c7a74f4683cee9483ded1b8b [2024-10-31 22:17:18,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:17:18,726 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:17:18,728 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:17:18,729 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:17:18,736 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:17:18,737 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:17:18" (1/1) ... [2024-10-31 22:17:18,739 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@273b5cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:18, skipping insertion in model container [2024-10-31 22:17:18,739 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:17:18" (1/1) ... [2024-10-31 22:17:18,776 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:17:19,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:17:19,167 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:17:19,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:17:19,265 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:17:19,266 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:19 WrapperNode [2024-10-31 22:17:19,267 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:17:19,268 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:17:19,268 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:17:19,269 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:17:19,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:19" (1/1) ... [2024-10-31 22:17:19,293 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:19" (1/1) ... [2024-10-31 22:17:19,359 INFO L138 Inliner]: procedures = 21, calls = 96, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 266 [2024-10-31 22:17:19,363 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:17:19,368 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:17:19,369 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:17:19,370 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:17:19,386 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:19" (1/1) ... [2024-10-31 22:17:19,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:19" (1/1) ... [2024-10-31 22:17:19,393 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:19" (1/1) ... [2024-10-31 22:17:19,425 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 22:17:19,429 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:19" (1/1) ... [2024-10-31 22:17:19,429 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:19" (1/1) ... [2024-10-31 22:17:19,443 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:19" (1/1) ... [2024-10-31 22:17:19,449 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:19" (1/1) ... [2024-10-31 22:17:19,451 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:19" (1/1) ... [2024-10-31 22:17:19,456 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:19" (1/1) ... [2024-10-31 22:17:19,463 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:17:19,468 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:17:19,468 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:17:19,468 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:17:19,469 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:19" (1/1) ... [2024-10-31 22:17:19,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:17:19,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291f730a-64de-4ee1-bd1e-afd80685835f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:19,519 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291f730a-64de-4ee1-bd1e-afd80685835f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:19,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291f730a-64de-4ee1-bd1e-afd80685835f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:17:19,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:17:19,567 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 22:17:19,567 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 22:17:19,567 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 22:17:19,567 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 22:17:19,568 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-31 22:17:19,568 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-31 22:17:19,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:17:19,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:17:19,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:17:19,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:17:19,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:17:19,572 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:17:19,706 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:17:19,709 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:17:20,291 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:17:20,291 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:17:20,794 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:17:20,794 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 22:17:20,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:17:20 BoogieIcfgContainer [2024-10-31 22:17:20,796 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:17:20,800 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:17:20,802 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:17:20,806 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:17:20,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:17:18" (1/3) ... [2024-10-31 22:17:20,808 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9c3350f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:17:20, skipping insertion in model container [2024-10-31 22:17:20,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:19" (2/3) ... [2024-10-31 22:17:20,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9c3350f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:17:20, skipping insertion in model container [2024-10-31 22:17:20,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:17:20" (3/3) ... [2024-10-31 22:17:20,812 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2024-10-31 22:17:20,835 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:17:20,835 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-10-31 22:17:20,836 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:17:20,928 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-31 22:17:20,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 68 transitions, 157 flow [2024-10-31 22:17:21,028 INFO L124 PetriNetUnfolderBase]: 0/65 cut-off events. [2024-10-31 22:17:21,030 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-31 22:17:21,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 65 events. 0/65 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 150 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-10-31 22:17:21,033 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 68 transitions, 157 flow [2024-10-31 22:17:21,040 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 63 transitions, 141 flow [2024-10-31 22:17:21,056 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:17:21,063 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7b39aadc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:17:21,064 INFO L334 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2024-10-31 22:17:21,073 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:17:21,074 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2024-10-31 22:17:21,074 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:17:21,074 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:21,075 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:21,076 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-31 22:17:21,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:21,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1967803496, now seen corresponding path program 1 times [2024-10-31 22:17:21,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:21,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546092605] [2024-10-31 22:17:21,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:21,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:21,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:21,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:21,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:21,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546092605] [2024-10-31 22:17:21,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546092605] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:21,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:21,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:17:21,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695765691] [2024-10-31 22:17:21,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:21,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:17:21,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:21,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:17:21,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:17:21,868 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 68 [2024-10-31 22:17:21,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 63 transitions, 141 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:21,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:21,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 68 [2024-10-31 22:17:21,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:24,386 INFO L124 PetriNetUnfolderBase]: 12673/19318 cut-off events. [2024-10-31 22:17:24,386 INFO L125 PetriNetUnfolderBase]: For 847/847 co-relation queries the response was YES. [2024-10-31 22:17:24,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38317 conditions, 19318 events. 12673/19318 cut-off events. For 847/847 co-relation queries the response was YES. Maximal size of possible extension queue 716. Compared 138269 event pairs, 857 based on Foata normal form. 0/14921 useless extension candidates. Maximal degree in co-relation 36759. Up to 14004 conditions per place. [2024-10-31 22:17:24,550 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 87 selfloop transitions, 6 changer transitions 1/109 dead transitions. [2024-10-31 22:17:24,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 109 transitions, 436 flow [2024-10-31 22:17:24,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:17:24,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:17:24,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 187 transitions. [2024-10-31 22:17:24,566 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-10-31 22:17:24,568 INFO L175 Difference]: Start difference. First operand has 73 places, 63 transitions, 141 flow. Second operand 5 states and 187 transitions. [2024-10-31 22:17:24,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 109 transitions, 436 flow [2024-10-31 22:17:24,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 109 transitions, 418 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-31 22:17:24,586 INFO L231 Difference]: Finished difference. Result has 73 places, 65 transitions, 160 flow [2024-10-31 22:17:24,589 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=160, PETRI_PLACES=73, PETRI_TRANSITIONS=65} [2024-10-31 22:17:24,593 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 0 predicate places. [2024-10-31 22:17:24,594 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 65 transitions, 160 flow [2024-10-31 22:17:24,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:24,595 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:24,595 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:24,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:17:24,596 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-31 22:17:24,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:24,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1967803497, now seen corresponding path program 1 times [2024-10-31 22:17:24,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:24,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315381185] [2024-10-31 22:17:24,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:24,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:24,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:24,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:24,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315381185] [2024-10-31 22:17:24,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315381185] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:24,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:24,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:17:24,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994733794] [2024-10-31 22:17:24,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:24,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:17:24,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:24,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:17:24,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:17:25,028 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 68 [2024-10-31 22:17:25,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 65 transitions, 160 flow. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:25,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:25,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 68 [2024-10-31 22:17:25,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:27,918 INFO L124 PetriNetUnfolderBase]: 14122/21679 cut-off events. [2024-10-31 22:17:27,919 INFO L125 PetriNetUnfolderBase]: For 782/782 co-relation queries the response was YES. [2024-10-31 22:17:27,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43516 conditions, 21679 events. 14122/21679 cut-off events. For 782/782 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 153428 event pairs, 5529 based on Foata normal form. 0/16893 useless extension candidates. Maximal degree in co-relation 35009. Up to 14452 conditions per place. [2024-10-31 22:17:28,063 INFO L140 encePairwiseOnDemand]: 54/68 looper letters, 97 selfloop transitions, 13 changer transitions 1/130 dead transitions. [2024-10-31 22:17:28,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 130 transitions, 525 flow [2024-10-31 22:17:28,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:17:28,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:17:28,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 215 transitions. [2024-10-31 22:17:28,069 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6323529411764706 [2024-10-31 22:17:28,070 INFO L175 Difference]: Start difference. First operand has 73 places, 65 transitions, 160 flow. Second operand 5 states and 215 transitions. [2024-10-31 22:17:28,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 130 transitions, 525 flow [2024-10-31 22:17:28,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 130 transitions, 520 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:17:28,125 INFO L231 Difference]: Finished difference. Result has 78 places, 76 transitions, 258 flow [2024-10-31 22:17:28,125 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=78, PETRI_TRANSITIONS=76} [2024-10-31 22:17:28,126 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 5 predicate places. [2024-10-31 22:17:28,126 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 76 transitions, 258 flow [2024-10-31 22:17:28,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:28,126 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:28,126 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:28,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:17:28,129 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-31 22:17:28,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:28,130 INFO L85 PathProgramCache]: Analyzing trace with hash 308478119, now seen corresponding path program 1 times [2024-10-31 22:17:28,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:28,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154700199] [2024-10-31 22:17:28,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:28,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:28,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:28,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:28,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154700199] [2024-10-31 22:17:28,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154700199] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:28,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:28,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:17:28,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545011890] [2024-10-31 22:17:28,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:28,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:17:28,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:28,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:17:28,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:17:28,441 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 68 [2024-10-31 22:17:28,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 76 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:28,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:28,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 68 [2024-10-31 22:17:28,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:30,931 INFO L124 PetriNetUnfolderBase]: 13294/20390 cut-off events. [2024-10-31 22:17:30,935 INFO L125 PetriNetUnfolderBase]: For 7263/7855 co-relation queries the response was YES. [2024-10-31 22:17:31,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49420 conditions, 20390 events. 13294/20390 cut-off events. For 7263/7855 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 141808 event pairs, 1333 based on Foata normal form. 290/16940 useless extension candidates. Maximal degree in co-relation 25665. Up to 14504 conditions per place. [2024-10-31 22:17:31,100 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 94 selfloop transitions, 7 changer transitions 1/121 dead transitions. [2024-10-31 22:17:31,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 121 transitions, 594 flow [2024-10-31 22:17:31,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:17:31,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:17:31,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 186 transitions. [2024-10-31 22:17:31,103 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5470588235294118 [2024-10-31 22:17:31,103 INFO L175 Difference]: Start difference. First operand has 78 places, 76 transitions, 258 flow. Second operand 5 states and 186 transitions. [2024-10-31 22:17:31,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 121 transitions, 594 flow [2024-10-31 22:17:31,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 121 transitions, 594 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:17:31,110 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 268 flow [2024-10-31 22:17:31,110 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=268, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2024-10-31 22:17:31,111 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 8 predicate places. [2024-10-31 22:17:31,111 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 268 flow [2024-10-31 22:17:31,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:31,112 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:31,112 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:31,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:17:31,113 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-31 22:17:31,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:31,114 INFO L85 PathProgramCache]: Analyzing trace with hash -485923992, now seen corresponding path program 1 times [2024-10-31 22:17:31,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:31,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018621249] [2024-10-31 22:17:31,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:31,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:31,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:31,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:31,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:31,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018621249] [2024-10-31 22:17:31,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018621249] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:31,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:31,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:17:31,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188556996] [2024-10-31 22:17:31,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:31,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:17:31,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:31,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:17:31,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:17:31,403 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 68 [2024-10-31 22:17:31,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 268 flow. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:31,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:31,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 68 [2024-10-31 22:17:31,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:35,013 INFO L124 PetriNetUnfolderBase]: 25228/38570 cut-off events. [2024-10-31 22:17:35,014 INFO L125 PetriNetUnfolderBase]: For 17499/18469 co-relation queries the response was YES. [2024-10-31 22:17:35,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92557 conditions, 38570 events. 25228/38570 cut-off events. For 17499/18469 co-relation queries the response was YES. Maximal size of possible extension queue 1208. Compared 287007 event pairs, 1643 based on Foata normal form. 476/32324 useless extension candidates. Maximal degree in co-relation 75201. Up to 17867 conditions per place. [2024-10-31 22:17:35,351 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 135 selfloop transitions, 26 changer transitions 0/180 dead transitions. [2024-10-31 22:17:35,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 180 transitions, 940 flow [2024-10-31 22:17:35,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:17:35,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:17:35,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 261 transitions. [2024-10-31 22:17:35,353 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6397058823529411 [2024-10-31 22:17:35,353 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 268 flow. Second operand 6 states and 261 transitions. [2024-10-31 22:17:35,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 180 transitions, 940 flow [2024-10-31 22:17:35,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 180 transitions, 910 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:17:35,455 INFO L231 Difference]: Finished difference. Result has 86 places, 98 transitions, 510 flow [2024-10-31 22:17:35,456 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=510, PETRI_PLACES=86, PETRI_TRANSITIONS=98} [2024-10-31 22:17:35,457 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 13 predicate places. [2024-10-31 22:17:35,458 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 98 transitions, 510 flow [2024-10-31 22:17:35,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:35,458 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:35,458 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:35,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:17:35,459 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-31 22:17:35,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:35,460 INFO L85 PathProgramCache]: Analyzing trace with hash 108455670, now seen corresponding path program 1 times [2024-10-31 22:17:35,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:35,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120799758] [2024-10-31 22:17:35,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:35,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:35,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:35,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:35,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:35,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120799758] [2024-10-31 22:17:35,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120799758] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:35,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:35,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:17:35,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243805119] [2024-10-31 22:17:35,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:35,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:17:35,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:35,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:17:35,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:17:35,871 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 68 [2024-10-31 22:17:35,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 98 transitions, 510 flow. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:35,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:35,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 68 [2024-10-31 22:17:35,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:42,659 INFO L124 PetriNetUnfolderBase]: 37010/56570 cut-off events. [2024-10-31 22:17:42,659 INFO L125 PetriNetUnfolderBase]: For 57901/59081 co-relation queries the response was YES. [2024-10-31 22:17:42,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149286 conditions, 56570 events. 37010/56570 cut-off events. For 57901/59081 co-relation queries the response was YES. Maximal size of possible extension queue 1845. Compared 444160 event pairs, 13217 based on Foata normal form. 1051/48700 useless extension candidates. Maximal degree in co-relation 111627. Up to 29963 conditions per place. [2024-10-31 22:17:43,020 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 149 selfloop transitions, 32 changer transitions 0/202 dead transitions. [2024-10-31 22:17:43,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 202 transitions, 1343 flow [2024-10-31 22:17:43,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:17:43,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:17:43,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 245 transitions. [2024-10-31 22:17:43,022 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6004901960784313 [2024-10-31 22:17:43,022 INFO L175 Difference]: Start difference. First operand has 86 places, 98 transitions, 510 flow. Second operand 6 states and 245 transitions. [2024-10-31 22:17:43,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 202 transitions, 1343 flow [2024-10-31 22:17:43,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 202 transitions, 1331 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-10-31 22:17:43,147 INFO L231 Difference]: Finished difference. Result has 96 places, 122 transitions, 827 flow [2024-10-31 22:17:43,148 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=827, PETRI_PLACES=96, PETRI_TRANSITIONS=122} [2024-10-31 22:17:43,148 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 23 predicate places. [2024-10-31 22:17:43,149 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 122 transitions, 827 flow [2024-10-31 22:17:43,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:43,149 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:43,149 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:43,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:17:43,150 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-10-31 22:17:43,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:43,150 INFO L85 PathProgramCache]: Analyzing trace with hash 615483045, now seen corresponding path program 1 times [2024-10-31 22:17:43,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:43,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455819540] [2024-10-31 22:17:43,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:43,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:43,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:43,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:43,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:43,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455819540] [2024-10-31 22:17:43,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455819540] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:43,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:43,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:17:43,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208112188] [2024-10-31 22:17:43,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:43,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:17:43,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:43,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:17:43,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:17:43,241 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 68 [2024-10-31 22:17:43,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 122 transitions, 827 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:43,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:43,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 68 [2024-10-31 22:17:43,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand