./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f02262f-9e7f-4a7c-b24d-e1540e824476/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f02262f-9e7f-4a7c-b24d-e1540e824476/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f02262f-9e7f-4a7c-b24d-e1540e824476/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f02262f-9e7f-4a7c-b24d-e1540e824476/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f02262f-9e7f-4a7c-b24d-e1540e824476/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f02262f-9e7f-4a7c-b24d-e1540e824476/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:18:05,059 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:18:05,153 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f02262f-9e7f-4a7c-b24d-e1540e824476/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 17:18:05,160 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:18:05,160 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:18:05,197 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:18:05,197 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:18:05,198 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:18:05,198 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:18:05,199 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:18:05,199 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:18:05,200 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:18:05,200 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:18:05,201 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:18:05,201 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:18:05,201 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:18:05,202 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:18:05,202 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:18:05,203 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:18:05,203 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:18:05,203 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:18:05,204 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:18:05,204 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:18:05,204 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:18:05,205 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:18:05,205 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:18:05,205 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:18:05,206 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:18:05,206 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:18:05,206 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:18:05,207 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:18:05,207 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:18:05,207 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:18:05,208 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:18:05,208 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:18:05,208 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:18:05,209 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:18:05,209 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:18:05,209 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:18:05,210 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:18:05,210 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:18:05,211 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:18:05,211 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_8f02262f-9e7f-4a7c-b24d-e1540e824476/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f02262f-9e7f-4a7c-b24d-e1540e824476/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac [2024-11-08 17:18:05,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:18:05,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:18:05,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:18:05,496 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:18:05,497 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:18:05,498 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f02262f-9e7f-4a7c-b24d-e1540e824476/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c Unable to find full path for "g++" [2024-11-08 17:18:07,498 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:18:07,770 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:18:07,770 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f02262f-9e7f-4a7c-b24d-e1540e824476/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-11-08 17:18:07,778 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f02262f-9e7f-4a7c-b24d-e1540e824476/bin/uautomizer-verify-jihMAELWvX/data/01fede5d0/f8b8d0a3951b4c74903a3a24a4cc4f75/FLAG3bbf4e709 [2024-11-08 17:18:08,087 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f02262f-9e7f-4a7c-b24d-e1540e824476/bin/uautomizer-verify-jihMAELWvX/data/01fede5d0/f8b8d0a3951b4c74903a3a24a4cc4f75 [2024-11-08 17:18:08,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:18:08,091 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:18:08,092 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:18:08,093 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:18:08,099 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:18:08,100 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:18:08" (1/1) ... [2024-11-08 17:18:08,101 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@de34a5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:08, skipping insertion in model container [2024-11-08 17:18:08,101 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:18:08" (1/1) ... [2024-11-08 17:18:08,128 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:18:08,374 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f02262f-9e7f-4a7c-b24d-e1540e824476/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3654,3667] [2024-11-08 17:18:08,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:18:08,394 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:18:08,422 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f02262f-9e7f-4a7c-b24d-e1540e824476/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3654,3667] [2024-11-08 17:18:08,426 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:18:08,446 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:18:08,447 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:08 WrapperNode [2024-11-08 17:18:08,447 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:18:08,449 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:18:08,449 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:18:08,449 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:18:08,457 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:08" (1/1) ... [2024-11-08 17:18:08,465 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:08" (1/1) ... [2024-11-08 17:18:08,493 INFO L138 Inliner]: procedures = 25, calls = 40, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 247 [2024-11-08 17:18:08,494 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:18:08,494 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:18:08,495 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:18:08,495 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:18:08,507 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:08" (1/1) ... [2024-11-08 17:18:08,508 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:08" (1/1) ... [2024-11-08 17:18:08,512 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:08" (1/1) ... [2024-11-08 17:18:08,529 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-08 17:18:08,529 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:08" (1/1) ... [2024-11-08 17:18:08,529 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:08" (1/1) ... [2024-11-08 17:18:08,538 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:08" (1/1) ... [2024-11-08 17:18:08,542 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:08" (1/1) ... [2024-11-08 17:18:08,544 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:08" (1/1) ... [2024-11-08 17:18:08,546 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:08" (1/1) ... [2024-11-08 17:18:08,550 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:18:08,550 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:18:08,551 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:18:08,551 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:18:08,552 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:08" (1/1) ... [2024-11-08 17:18:08,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:18:08,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f02262f-9e7f-4a7c-b24d-e1540e824476/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:18:08,595 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f02262f-9e7f-4a7c-b24d-e1540e824476/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:18:08,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f02262f-9e7f-4a7c-b24d-e1540e824476/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:18:08,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:18:08,625 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 17:18:08,625 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 17:18:08,625 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 17:18:08,626 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 17:18:08,626 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 17:18:08,626 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 17:18:08,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:18:08,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 17:18:08,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 17:18:08,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 17:18:08,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 17:18:08,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 17:18:08,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 17:18:08,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:18:08,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:18:08,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 17:18:08,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 17:18:08,630 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 17:18:08,766 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:18:08,768 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:18:09,249 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 17:18:09,249 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:18:09,692 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:18:09,693 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-08 17:18:09,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:18:09 BoogieIcfgContainer [2024-11-08 17:18:09,694 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:18:09,697 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:18:09,697 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:18:09,701 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:18:09,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:18:08" (1/3) ... [2024-11-08 17:18:09,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd6988c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:18:09, skipping insertion in model container [2024-11-08 17:18:09,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:18:08" (2/3) ... [2024-11-08 17:18:09,703 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd6988c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:18:09, skipping insertion in model container [2024-11-08 17:18:09,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:18:09" (3/3) ... [2024-11-08 17:18:09,705 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2024-11-08 17:18:09,726 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:18:09,726 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 17:18:09,726 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 17:18:09,805 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-08 17:18:09,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 53 transitions, 127 flow [2024-11-08 17:18:09,910 INFO L124 PetriNetUnfolderBase]: 10/50 cut-off events. [2024-11-08 17:18:09,911 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-08 17:18:09,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 50 events. 10/50 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 97 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2024-11-08 17:18:09,917 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 53 transitions, 127 flow [2024-11-08 17:18:09,921 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 49 transitions, 116 flow [2024-11-08 17:18:09,939 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:18:09,948 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;@238492a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:18:09,948 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-08 17:18:09,974 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:18:09,975 INFO L124 PetriNetUnfolderBase]: 10/48 cut-off events. [2024-11-08 17:18:09,975 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-08 17:18:09,976 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:18:09,976 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:09,977 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:18:09,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:09,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1953216911, now seen corresponding path program 1 times [2024-11-08 17:18:09,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:18:09,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000452932] [2024-11-08 17:18:09,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:09,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:18:10,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:10,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:18:10,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:18:10,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000452932] [2024-11-08 17:18:10,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000452932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:18:10,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:18:10,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:18:10,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013469867] [2024-11-08 17:18:10,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:18:10,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 17:18:10,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:18:10,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 17:18:10,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 17:18:10,387 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-11-08 17:18:10,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 49 transitions, 116 flow. Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:18:10,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:18:10,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-11-08 17:18:10,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:18:10,734 INFO L124 PetriNetUnfolderBase]: 920/1471 cut-off events. [2024-11-08 17:18:10,735 INFO L125 PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES. [2024-11-08 17:18:10,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2810 conditions, 1471 events. 920/1471 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7221 event pairs, 740 based on Foata normal form. 132/1473 useless extension candidates. Maximal degree in co-relation 2568. Up to 1227 conditions per place. [2024-11-08 17:18:10,756 INFO L140 encePairwiseOnDemand]: 51/53 looper letters, 29 selfloop transitions, 0 changer transitions 0/47 dead transitions. [2024-11-08 17:18:10,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 47 transitions, 170 flow [2024-11-08 17:18:10,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 17:18:10,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-08 17:18:10,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 73 transitions. [2024-11-08 17:18:10,770 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6886792452830188 [2024-11-08 17:18:10,773 INFO L175 Difference]: Start difference. First operand has 49 places, 49 transitions, 116 flow. Second operand 2 states and 73 transitions. [2024-11-08 17:18:10,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 47 transitions, 170 flow [2024-11-08 17:18:10,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 47 transitions, 158 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-08 17:18:10,786 INFO L231 Difference]: Finished difference. Result has 44 places, 47 transitions, 100 flow [2024-11-08 17:18:10,788 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=100, PETRI_PLACES=44, PETRI_TRANSITIONS=47} [2024-11-08 17:18:10,795 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, -5 predicate places. [2024-11-08 17:18:10,796 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 47 transitions, 100 flow [2024-11-08 17:18:10,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:18:10,796 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:18:10,797 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:10,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:18:10,798 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:18:10,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:10,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1102821741, now seen corresponding path program 1 times [2024-11-08 17:18:10,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:18:10,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854825893] [2024-11-08 17:18:10,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:10,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:18:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:11,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:18:11,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:18:11,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854825893] [2024-11-08 17:18:11,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854825893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:18:11,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:18:11,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:18:11,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497521636] [2024-11-08 17:18:11,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:18:11,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:18:11,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:18:11,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:18:11,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:18:11,130 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-11-08 17:18:11,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 47 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:18:11,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:18:11,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-11-08 17:18:11,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:18:11,435 INFO L124 PetriNetUnfolderBase]: 830/1387 cut-off events. [2024-11-08 17:18:11,437 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-08 17:18:11,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2589 conditions, 1387 events. 830/1387 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6850 event pairs, 250 based on Foata normal form. 27/1322 useless extension candidates. Maximal degree in co-relation 2586. Up to 880 conditions per place. [2024-11-08 17:18:11,451 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 39 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2024-11-08 17:18:11,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 59 transitions, 208 flow [2024-11-08 17:18:11,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:18:11,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:18:11,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-11-08 17:18:11,455 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.660377358490566 [2024-11-08 17:18:11,455 INFO L175 Difference]: Start difference. First operand has 44 places, 47 transitions, 100 flow. Second operand 3 states and 105 transitions. [2024-11-08 17:18:11,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 59 transitions, 208 flow [2024-11-08 17:18:11,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 59 transitions, 208 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 17:18:11,459 INFO L231 Difference]: Finished difference. Result has 47 places, 48 transitions, 112 flow [2024-11-08 17:18:11,463 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=47, PETRI_TRANSITIONS=48} [2024-11-08 17:18:11,464 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, -2 predicate places. [2024-11-08 17:18:11,466 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 48 transitions, 112 flow [2024-11-08 17:18:11,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:18:11,467 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:18:11,467 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:11,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:18:11,468 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:18:11,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:11,469 INFO L85 PathProgramCache]: Analyzing trace with hash -106892575, now seen corresponding path program 2 times [2024-11-08 17:18:11,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:18:11,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838710153] [2024-11-08 17:18:11,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:11,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:18:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:11,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:18:11,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:18:11,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838710153] [2024-11-08 17:18:11,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838710153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:18:11,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:18:11,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:18:11,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34856184] [2024-11-08 17:18:11,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:18:11,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:18:11,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:18:11,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:18:11,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:18:11,747 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:18:11,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 48 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 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) [2024-11-08 17:18:11,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:18:11,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:18:11,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:18:12,101 INFO L124 PetriNetUnfolderBase]: 864/1477 cut-off events. [2024-11-08 17:18:12,101 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2024-11-08 17:18:12,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2934 conditions, 1477 events. 864/1477 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7340 event pairs, 674 based on Foata normal form. 32/1418 useless extension candidates. Maximal degree in co-relation 2929. Up to 1163 conditions per place. [2024-11-08 17:18:12,114 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 33 selfloop transitions, 2 changer transitions 20/69 dead transitions. [2024-11-08 17:18:12,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 69 transitions, 267 flow [2024-11-08 17:18:12,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:18:12,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:18:12,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 142 transitions. [2024-11-08 17:18:12,117 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5358490566037736 [2024-11-08 17:18:12,117 INFO L175 Difference]: Start difference. First operand has 47 places, 48 transitions, 112 flow. Second operand 5 states and 142 transitions. [2024-11-08 17:18:12,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 69 transitions, 267 flow [2024-11-08 17:18:12,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 69 transitions, 265 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:18:12,122 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 134 flow [2024-11-08 17:18:12,123 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=134, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2024-11-08 17:18:12,124 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 4 predicate places. [2024-11-08 17:18:12,124 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 134 flow [2024-11-08 17:18:12,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 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) [2024-11-08 17:18:12,125 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:18:12,125 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:12,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:18:12,126 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:18:12,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:12,127 INFO L85 PathProgramCache]: Analyzing trace with hash 994319101, now seen corresponding path program 1 times [2024-11-08 17:18:12,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:18:12,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197080886] [2024-11-08 17:18:12,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:12,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:18:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:12,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:18:12,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:18:12,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197080886] [2024-11-08 17:18:12,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197080886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:18:12,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:18:12,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:18:12,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812851128] [2024-11-08 17:18:12,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:18:12,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:18:12,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:18:12,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:18:12,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:18:12,381 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:18:12,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:18:12,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:18:12,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:18:12,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:18:12,722 INFO L124 PetriNetUnfolderBase]: 1001/1706 cut-off events. [2024-11-08 17:18:12,722 INFO L125 PetriNetUnfolderBase]: For 434/434 co-relation queries the response was YES. [2024-11-08 17:18:12,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3675 conditions, 1706 events. 1001/1706 cut-off events. For 434/434 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 8950 event pairs, 795 based on Foata normal form. 32/1641 useless extension candidates. Maximal degree in co-relation 3667. Up to 1164 conditions per place. [2024-11-08 17:18:12,733 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 34 selfloop transitions, 2 changer transitions 18/68 dead transitions. [2024-11-08 17:18:12,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 68 transitions, 294 flow [2024-11-08 17:18:12,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:18:12,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:18:12,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 138 transitions. [2024-11-08 17:18:12,736 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5207547169811321 [2024-11-08 17:18:12,736 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 134 flow. Second operand 5 states and 138 transitions. [2024-11-08 17:18:12,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 68 transitions, 294 flow [2024-11-08 17:18:12,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 68 transitions, 284 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-08 17:18:12,738 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 146 flow [2024-11-08 17:18:12,739 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=146, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2024-11-08 17:18:12,739 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 7 predicate places. [2024-11-08 17:18:12,740 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 146 flow [2024-11-08 17:18:12,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:18:12,740 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:18:12,740 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:12,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 17:18:12,741 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:18:12,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:12,741 INFO L85 PathProgramCache]: Analyzing trace with hash 2085095409, now seen corresponding path program 1 times [2024-11-08 17:18:12,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:18:12,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720704627] [2024-11-08 17:18:12,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:12,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:18:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:14,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:18:14,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:18:14,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720704627] [2024-11-08 17:18:14,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720704627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:18:14,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:18:14,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:18:14,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230361132] [2024-11-08 17:18:14,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:18:14,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:18:14,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:18:14,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:18:14,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:18:14,210 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:18:14,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 146 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:14,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:18:14,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:18:14,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:18:15,232 INFO L124 PetriNetUnfolderBase]: 1929/3194 cut-off events. [2024-11-08 17:18:15,233 INFO L125 PetriNetUnfolderBase]: For 821/825 co-relation queries the response was YES. [2024-11-08 17:18:15,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6892 conditions, 3194 events. 1929/3194 cut-off events. For 821/825 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 17758 event pairs, 112 based on Foata normal form. 3/3111 useless extension candidates. Maximal degree in co-relation 6882. Up to 1955 conditions per place. [2024-11-08 17:18:15,256 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 119 selfloop transitions, 35 changer transitions 3/171 dead transitions. [2024-11-08 17:18:15,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 171 transitions, 807 flow [2024-11-08 17:18:15,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 17:18:15,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-08 17:18:15,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 393 transitions. [2024-11-08 17:18:15,259 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5296495956873315 [2024-11-08 17:18:15,260 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 146 flow. Second operand 14 states and 393 transitions. [2024-11-08 17:18:15,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 171 transitions, 807 flow [2024-11-08 17:18:15,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 171 transitions, 785 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-11-08 17:18:15,264 INFO L231 Difference]: Finished difference. Result has 71 places, 83 transitions, 337 flow [2024-11-08 17:18:15,264 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=337, PETRI_PLACES=71, PETRI_TRANSITIONS=83} [2024-11-08 17:18:15,265 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 22 predicate places. [2024-11-08 17:18:15,265 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 83 transitions, 337 flow [2024-11-08 17:18:15,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:15,266 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:18:15,266 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:15,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 17:18:15,267 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:18:15,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:15,267 INFO L85 PathProgramCache]: Analyzing trace with hash -770359131, now seen corresponding path program 2 times [2024-11-08 17:18:15,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:18:15,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148407274] [2024-11-08 17:18:15,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:15,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:18:15,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:15,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:18:15,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:18:15,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148407274] [2024-11-08 17:18:15,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148407274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:18:15,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:18:15,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:18:15,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676261026] [2024-11-08 17:18:15,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:18:15,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:18:15,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:18:15,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:18:15,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:18:15,346 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-11-08 17:18:15,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 83 transitions, 337 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:18:15,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:18:15,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-11-08 17:18:15,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:18:15,682 INFO L124 PetriNetUnfolderBase]: 1103/1963 cut-off events. [2024-11-08 17:18:15,683 INFO L125 PetriNetUnfolderBase]: For 1332/1350 co-relation queries the response was YES. [2024-11-08 17:18:15,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5203 conditions, 1963 events. 1103/1963 cut-off events. For 1332/1350 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 10327 event pairs, 283 based on Foata normal form. 14/1894 useless extension candidates. Maximal degree in co-relation 5188. Up to 1516 conditions per place. [2024-11-08 17:18:15,700 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 60 selfloop transitions, 3 changer transitions 0/86 dead transitions. [2024-11-08 17:18:15,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 86 transitions, 466 flow [2024-11-08 17:18:15,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:18:15,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:18:15,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-11-08 17:18:15,701 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6415094339622641 [2024-11-08 17:18:15,701 INFO L175 Difference]: Start difference. First operand has 71 places, 83 transitions, 337 flow. Second operand 3 states and 102 transitions. [2024-11-08 17:18:15,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 86 transitions, 466 flow [2024-11-08 17:18:15,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 86 transitions, 460 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 17:18:15,707 INFO L231 Difference]: Finished difference. Result has 71 places, 78 transitions, 322 flow [2024-11-08 17:18:15,707 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=322, PETRI_PLACES=71, PETRI_TRANSITIONS=78} [2024-11-08 17:18:15,708 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 22 predicate places. [2024-11-08 17:18:15,708 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 78 transitions, 322 flow [2024-11-08 17:18:15,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:18:15,709 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:18:15,709 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:15,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 17:18:15,709 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:18:15,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:15,710 INFO L85 PathProgramCache]: Analyzing trace with hash 947632667, now seen corresponding path program 3 times [2024-11-08 17:18:15,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:18:15,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565522138] [2024-11-08 17:18:15,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:15,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:18:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:16,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:18:16,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:18:16,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565522138] [2024-11-08 17:18:16,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565522138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:18:16,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:18:16,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:18:16,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430348421] [2024-11-08 17:18:16,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:18:16,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:18:16,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:18:16,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:18:16,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:18:16,797 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:18:16,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 78 transitions, 322 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:16,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:18:16,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:18:16,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:18:17,576 INFO L124 PetriNetUnfolderBase]: 1710/2899 cut-off events. [2024-11-08 17:18:17,576 INFO L125 PetriNetUnfolderBase]: For 2575/2575 co-relation queries the response was YES. [2024-11-08 17:18:17,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8131 conditions, 2899 events. 1710/2899 cut-off events. For 2575/2575 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 15821 event pairs, 350 based on Foata normal form. 1/2807 useless extension candidates. Maximal degree in co-relation 8115. Up to 2040 conditions per place. [2024-11-08 17:18:17,604 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 98 selfloop transitions, 32 changer transitions 3/147 dead transitions. [2024-11-08 17:18:17,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 147 transitions, 863 flow [2024-11-08 17:18:17,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:18:17,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 17:18:17,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 319 transitions. [2024-11-08 17:18:17,607 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5015723270440252 [2024-11-08 17:18:17,607 INFO L175 Difference]: Start difference. First operand has 71 places, 78 transitions, 322 flow. Second operand 12 states and 319 transitions. [2024-11-08 17:18:17,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 147 transitions, 863 flow [2024-11-08 17:18:17,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 147 transitions, 832 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-11-08 17:18:17,618 INFO L231 Difference]: Finished difference. Result has 85 places, 95 transitions, 504 flow [2024-11-08 17:18:17,618 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=504, PETRI_PLACES=85, PETRI_TRANSITIONS=95} [2024-11-08 17:18:17,619 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 36 predicate places. [2024-11-08 17:18:17,620 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 95 transitions, 504 flow [2024-11-08 17:18:17,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:17,620 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:18:17,620 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:17,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 17:18:17,621 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:18:17,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:17,621 INFO L85 PathProgramCache]: Analyzing trace with hash 127135859, now seen corresponding path program 4 times [2024-11-08 17:18:17,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:18:17,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331254391] [2024-11-08 17:18:17,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:17,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:18:17,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:18,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:18:18,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:18:18,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331254391] [2024-11-08 17:18:18,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331254391] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:18:18,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:18:18,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:18:18,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132582333] [2024-11-08 17:18:18,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:18:18,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:18:18,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:18:18,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:18:18,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:18:18,776 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:18:18,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 95 transitions, 504 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:18,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:18:18,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:18:18,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:18:19,677 INFO L124 PetriNetUnfolderBase]: 1814/3124 cut-off events. [2024-11-08 17:18:19,677 INFO L125 PetriNetUnfolderBase]: For 3652/3652 co-relation queries the response was YES. [2024-11-08 17:18:19,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8994 conditions, 3124 events. 1814/3124 cut-off events. For 3652/3652 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 17564 event pairs, 497 based on Foata normal form. 1/3018 useless extension candidates. Maximal degree in co-relation 8974. Up to 2139 conditions per place. [2024-11-08 17:18:19,706 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 113 selfloop transitions, 37 changer transitions 3/167 dead transitions. [2024-11-08 17:18:19,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 167 transitions, 1120 flow [2024-11-08 17:18:19,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:18:19,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 17:18:19,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 328 transitions. [2024-11-08 17:18:19,710 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5157232704402516 [2024-11-08 17:18:19,710 INFO L175 Difference]: Start difference. First operand has 85 places, 95 transitions, 504 flow. Second operand 12 states and 328 transitions. [2024-11-08 17:18:19,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 167 transitions, 1120 flow [2024-11-08 17:18:19,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 167 transitions, 1102 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-11-08 17:18:19,726 INFO L231 Difference]: Finished difference. Result has 103 places, 111 transitions, 746 flow [2024-11-08 17:18:19,727 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=746, PETRI_PLACES=103, PETRI_TRANSITIONS=111} [2024-11-08 17:18:19,727 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 54 predicate places. [2024-11-08 17:18:19,730 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 111 transitions, 746 flow [2024-11-08 17:18:19,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:19,730 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:18:19,730 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:19,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 17:18:19,731 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:18:19,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:19,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1255489621, now seen corresponding path program 5 times [2024-11-08 17:18:19,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:18:19,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215836296] [2024-11-08 17:18:19,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:19,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:18:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:20,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:18:20,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:18:20,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215836296] [2024-11-08 17:18:20,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215836296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:18:20,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:18:20,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:18:20,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345534997] [2024-11-08 17:18:20,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:18:20,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:18:20,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:18:20,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:18:20,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:18:20,830 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:18:20,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 111 transitions, 746 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:20,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:18:20,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:18:20,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:18:21,904 INFO L124 PetriNetUnfolderBase]: 1981/3446 cut-off events. [2024-11-08 17:18:21,904 INFO L125 PetriNetUnfolderBase]: For 6973/6985 co-relation queries the response was YES. [2024-11-08 17:18:21,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10933 conditions, 3446 events. 1981/3446 cut-off events. For 6973/6985 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 20193 event pairs, 407 based on Foata normal form. 4/3329 useless extension candidates. Maximal degree in co-relation 10904. Up to 2148 conditions per place. [2024-11-08 17:18:21,954 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 128 selfloop transitions, 53 changer transitions 3/198 dead transitions. [2024-11-08 17:18:21,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 198 transitions, 1457 flow [2024-11-08 17:18:21,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 17:18:21,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-08 17:18:21,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 381 transitions. [2024-11-08 17:18:21,956 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5134770889487871 [2024-11-08 17:18:21,956 INFO L175 Difference]: Start difference. First operand has 103 places, 111 transitions, 746 flow. Second operand 14 states and 381 transitions. [2024-11-08 17:18:21,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 198 transitions, 1457 flow [2024-11-08 17:18:21,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 198 transitions, 1423 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-11-08 17:18:21,986 INFO L231 Difference]: Finished difference. Result has 118 places, 120 transitions, 917 flow [2024-11-08 17:18:21,987 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=917, PETRI_PLACES=118, PETRI_TRANSITIONS=120} [2024-11-08 17:18:21,987 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 69 predicate places. [2024-11-08 17:18:21,987 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 120 transitions, 917 flow [2024-11-08 17:18:21,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:21,988 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:18:21,988 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:21,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 17:18:21,990 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:18:21,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:21,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1012462259, now seen corresponding path program 6 times [2024-11-08 17:18:21,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:18:21,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750936341] [2024-11-08 17:18:21,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:21,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:18:22,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:23,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:18:23,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:18:23,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750936341] [2024-11-08 17:18:23,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750936341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:18:23,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:18:23,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:18:23,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991231019] [2024-11-08 17:18:23,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:18:23,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:18:23,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:18:23,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:18:23,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:18:23,134 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:18:23,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 120 transitions, 917 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:23,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:18:23,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:18:23,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:18:24,340 INFO L124 PetriNetUnfolderBase]: 2085/3668 cut-off events. [2024-11-08 17:18:24,340 INFO L125 PetriNetUnfolderBase]: For 10053/10065 co-relation queries the response was YES. [2024-11-08 17:18:24,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12359 conditions, 3668 events. 2085/3668 cut-off events. For 10053/10065 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 22157 event pairs, 511 based on Foata normal form. 4/3541 useless extension candidates. Maximal degree in co-relation 12326. Up to 2485 conditions per place. [2024-11-08 17:18:24,376 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 135 selfloop transitions, 49 changer transitions 3/201 dead transitions. [2024-11-08 17:18:24,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 201 transitions, 1634 flow [2024-11-08 17:18:24,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 17:18:24,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-08 17:18:24,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 377 transitions. [2024-11-08 17:18:24,379 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5080862533692723 [2024-11-08 17:18:24,379 INFO L175 Difference]: Start difference. First operand has 118 places, 120 transitions, 917 flow. Second operand 14 states and 377 transitions. [2024-11-08 17:18:24,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 201 transitions, 1634 flow [2024-11-08 17:18:24,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 201 transitions, 1525 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-11-08 17:18:24,403 INFO L231 Difference]: Finished difference. Result has 126 places, 126 transitions, 993 flow [2024-11-08 17:18:24,403 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=993, PETRI_PLACES=126, PETRI_TRANSITIONS=126} [2024-11-08 17:18:24,404 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 77 predicate places. [2024-11-08 17:18:24,404 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 126 transitions, 993 flow [2024-11-08 17:18:24,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:24,405 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:18:24,405 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:24,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 17:18:24,405 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:18:24,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:24,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1151080775, now seen corresponding path program 7 times [2024-11-08 17:18:24,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:18:24,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111555076] [2024-11-08 17:18:24,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:24,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:18:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:25,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:18:25,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:18:25,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111555076] [2024-11-08 17:18:25,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111555076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:18:25,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:18:25,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:18:25,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541251223] [2024-11-08 17:18:25,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:18:25,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:18:25,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:18:25,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:18:25,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:18:25,418 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:18:25,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 126 transitions, 993 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:25,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:18:25,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:18:25,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:18:26,495 INFO L124 PetriNetUnfolderBase]: 2099/3683 cut-off events. [2024-11-08 17:18:26,496 INFO L125 PetriNetUnfolderBase]: For 12733/12757 co-relation queries the response was YES. [2024-11-08 17:18:26,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12890 conditions, 3683 events. 2099/3683 cut-off events. For 12733/12757 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 22328 event pairs, 502 based on Foata normal form. 16/3555 useless extension candidates. Maximal degree in co-relation 12853. Up to 2583 conditions per place. [2024-11-08 17:18:26,544 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 131 selfloop transitions, 48 changer transitions 3/196 dead transitions. [2024-11-08 17:18:26,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 196 transitions, 1653 flow [2024-11-08 17:18:26,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 17:18:26,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-08 17:18:26,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 368 transitions. [2024-11-08 17:18:26,547 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49595687331536387 [2024-11-08 17:18:26,548 INFO L175 Difference]: Start difference. First operand has 126 places, 126 transitions, 993 flow. Second operand 14 states and 368 transitions. [2024-11-08 17:18:26,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 196 transitions, 1653 flow [2024-11-08 17:18:26,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 196 transitions, 1528 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-11-08 17:18:26,587 INFO L231 Difference]: Finished difference. Result has 132 places, 129 transitions, 1015 flow [2024-11-08 17:18:26,588 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1015, PETRI_PLACES=132, PETRI_TRANSITIONS=129} [2024-11-08 17:18:26,588 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 83 predicate places. [2024-11-08 17:18:26,588 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 129 transitions, 1015 flow [2024-11-08 17:18:26,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:26,589 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:18:26,589 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:26,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 17:18:26,591 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:18:26,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:26,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1955459107, now seen corresponding path program 8 times [2024-11-08 17:18:26,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:18:26,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558239844] [2024-11-08 17:18:26,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:26,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:18:26,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:27,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:18:27,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:18:27,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558239844] [2024-11-08 17:18:27,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558239844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:18:27,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:18:27,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:18:27,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590222764] [2024-11-08 17:18:27,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:18:27,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:18:27,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:18:27,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:18:27,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:18:27,597 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:18:27,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 129 transitions, 1015 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:27,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:18:27,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:18:27,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:18:28,601 INFO L124 PetriNetUnfolderBase]: 2222/3911 cut-off events. [2024-11-08 17:18:28,601 INFO L125 PetriNetUnfolderBase]: For 12977/13001 co-relation queries the response was YES. [2024-11-08 17:18:28,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13602 conditions, 3911 events. 2222/3911 cut-off events. For 12977/13001 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 24032 event pairs, 656 based on Foata normal form. 7/3778 useless extension candidates. Maximal degree in co-relation 13562. Up to 2836 conditions per place. [2024-11-08 17:18:28,635 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 139 selfloop transitions, 44 changer transitions 3/200 dead transitions. [2024-11-08 17:18:28,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 200 transitions, 1752 flow [2024-11-08 17:18:28,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 17:18:28,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-08 17:18:28,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 345 transitions. [2024-11-08 17:18:28,637 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5007256894049347 [2024-11-08 17:18:28,637 INFO L175 Difference]: Start difference. First operand has 132 places, 129 transitions, 1015 flow. Second operand 13 states and 345 transitions. [2024-11-08 17:18:28,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 200 transitions, 1752 flow [2024-11-08 17:18:28,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 200 transitions, 1642 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-11-08 17:18:28,673 INFO L231 Difference]: Finished difference. Result has 137 places, 138 transitions, 1140 flow [2024-11-08 17:18:28,674 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1140, PETRI_PLACES=137, PETRI_TRANSITIONS=138} [2024-11-08 17:18:28,674 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 88 predicate places. [2024-11-08 17:18:28,674 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 138 transitions, 1140 flow [2024-11-08 17:18:28,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:28,675 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:18:28,675 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:28,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 17:18:28,675 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:18:28,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:28,676 INFO L85 PathProgramCache]: Analyzing trace with hash 487660653, now seen corresponding path program 9 times [2024-11-08 17:18:28,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:18:28,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910963404] [2024-11-08 17:18:28,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:28,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:18:28,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:29,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:18:29,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:18:29,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910963404] [2024-11-08 17:18:29,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910963404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:18:29,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:18:29,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:18:29,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156232989] [2024-11-08 17:18:29,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:18:29,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:18:29,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:18:29,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:18:29,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:18:29,610 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:18:29,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 138 transitions, 1140 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:29,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:18:29,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:18:29,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:18:30,698 INFO L124 PetriNetUnfolderBase]: 2354/4169 cut-off events. [2024-11-08 17:18:30,698 INFO L125 PetriNetUnfolderBase]: For 20856/20888 co-relation queries the response was YES. [2024-11-08 17:18:30,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15396 conditions, 4169 events. 2354/4169 cut-off events. For 20856/20888 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 26343 event pairs, 719 based on Foata normal form. 9/4033 useless extension candidates. Maximal degree in co-relation 15352. Up to 3040 conditions per place. [2024-11-08 17:18:30,731 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 150 selfloop transitions, 44 changer transitions 3/211 dead transitions. [2024-11-08 17:18:30,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 211 transitions, 1931 flow [2024-11-08 17:18:30,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 17:18:30,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-08 17:18:30,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 347 transitions. [2024-11-08 17:18:30,733 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5036284470246735 [2024-11-08 17:18:30,734 INFO L175 Difference]: Start difference. First operand has 137 places, 138 transitions, 1140 flow. Second operand 13 states and 347 transitions. [2024-11-08 17:18:30,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 211 transitions, 1931 flow [2024-11-08 17:18:30,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 211 transitions, 1801 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-11-08 17:18:30,779 INFO L231 Difference]: Finished difference. Result has 145 places, 147 transitions, 1234 flow [2024-11-08 17:18:30,779 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1234, PETRI_PLACES=145, PETRI_TRANSITIONS=147} [2024-11-08 17:18:30,780 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 96 predicate places. [2024-11-08 17:18:30,780 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 147 transitions, 1234 flow [2024-11-08 17:18:30,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:30,781 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:18:30,781 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:30,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 17:18:30,781 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:18:30,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:30,781 INFO L85 PathProgramCache]: Analyzing trace with hash -2001168169, now seen corresponding path program 10 times [2024-11-08 17:18:30,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:18:30,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565142814] [2024-11-08 17:18:30,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:30,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:18:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:31,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:18:31,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:18:31,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565142814] [2024-11-08 17:18:31,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565142814] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:18:31,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:18:31,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:18:31,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802289607] [2024-11-08 17:18:31,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:18:31,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:18:31,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:18:31,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:18:31,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:18:31,614 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:18:31,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 147 transitions, 1234 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:31,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:18:31,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:18:31,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:18:32,980 INFO L124 PetriNetUnfolderBase]: 2520/4454 cut-off events. [2024-11-08 17:18:32,981 INFO L125 PetriNetUnfolderBase]: For 26864/26922 co-relation queries the response was YES. [2024-11-08 17:18:32,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17170 conditions, 4454 events. 2520/4454 cut-off events. For 26864/26922 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 28580 event pairs, 778 based on Foata normal form. 7/4301 useless extension candidates. Maximal degree in co-relation 17122. Up to 3249 conditions per place. [2024-11-08 17:18:33,021 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 158 selfloop transitions, 45 changer transitions 3/220 dead transitions. [2024-11-08 17:18:33,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 220 transitions, 2076 flow [2024-11-08 17:18:33,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 17:18:33,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-08 17:18:33,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 350 transitions. [2024-11-08 17:18:33,024 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5079825834542816 [2024-11-08 17:18:33,024 INFO L175 Difference]: Start difference. First operand has 145 places, 147 transitions, 1234 flow. Second operand 13 states and 350 transitions. [2024-11-08 17:18:33,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 220 transitions, 2076 flow [2024-11-08 17:18:33,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 220 transitions, 1934 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-11-08 17:18:33,101 INFO L231 Difference]: Finished difference. Result has 153 places, 154 transitions, 1330 flow [2024-11-08 17:18:33,101 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1092, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1330, PETRI_PLACES=153, PETRI_TRANSITIONS=154} [2024-11-08 17:18:33,102 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 104 predicate places. [2024-11-08 17:18:33,102 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 154 transitions, 1330 flow [2024-11-08 17:18:33,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:33,103 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:18:33,103 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:33,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 17:18:33,103 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:18:33,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:33,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1372383821, now seen corresponding path program 11 times [2024-11-08 17:18:33,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:18:33,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455516211] [2024-11-08 17:18:33,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:33,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:18:33,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:33,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:18:33,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:18:33,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455516211] [2024-11-08 17:18:33,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455516211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:18:33,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:18:33,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:18:33,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778109557] [2024-11-08 17:18:33,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:18:33,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:18:33,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:18:33,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:18:33,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:18:33,983 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:18:33,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 154 transitions, 1330 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:33,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:18:33,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:18:33,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:18:35,134 INFO L124 PetriNetUnfolderBase]: 2581/4558 cut-off events. [2024-11-08 17:18:35,135 INFO L125 PetriNetUnfolderBase]: For 33833/33955 co-relation queries the response was YES. [2024-11-08 17:18:35,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17998 conditions, 4558 events. 2581/4558 cut-off events. For 33833/33955 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 29374 event pairs, 880 based on Foata normal form. 21/4421 useless extension candidates. Maximal degree in co-relation 17946. Up to 3488 conditions per place. [2024-11-08 17:18:35,192 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 152 selfloop transitions, 44 changer transitions 4/214 dead transitions. [2024-11-08 17:18:35,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 214 transitions, 2032 flow [2024-11-08 17:18:35,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 17:18:35,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-08 17:18:35,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 337 transitions. [2024-11-08 17:18:35,193 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48911465892597966 [2024-11-08 17:18:35,193 INFO L175 Difference]: Start difference. First operand has 153 places, 154 transitions, 1330 flow. Second operand 13 states and 337 transitions. [2024-11-08 17:18:35,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 214 transitions, 2032 flow [2024-11-08 17:18:35,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 214 transitions, 1884 flow, removed 47 selfloop flow, removed 8 redundant places. [2024-11-08 17:18:35,262 INFO L231 Difference]: Finished difference. Result has 160 places, 160 transitions, 1365 flow [2024-11-08 17:18:35,262 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1182, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1365, PETRI_PLACES=160, PETRI_TRANSITIONS=160} [2024-11-08 17:18:35,262 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 111 predicate places. [2024-11-08 17:18:35,263 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 160 transitions, 1365 flow [2024-11-08 17:18:35,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:35,263 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:18:35,263 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:35,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 17:18:35,264 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:18:35,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:35,264 INFO L85 PathProgramCache]: Analyzing trace with hash -87245625, now seen corresponding path program 12 times [2024-11-08 17:18:35,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:18:35,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971462102] [2024-11-08 17:18:35,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:35,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:18:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:36,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:18:36,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:18:36,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971462102] [2024-11-08 17:18:36,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971462102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:18:36,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:18:36,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:18:36,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433718059] [2024-11-08 17:18:36,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:18:36,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:18:36,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:18:36,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:18:36,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:18:36,157 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:18:36,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 160 transitions, 1365 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:36,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:18:36,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:18:36,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:18:37,073 INFO L124 PetriNetUnfolderBase]: 2732/4802 cut-off events. [2024-11-08 17:18:37,073 INFO L125 PetriNetUnfolderBase]: For 34764/34838 co-relation queries the response was YES. [2024-11-08 17:18:37,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19050 conditions, 4802 events. 2732/4802 cut-off events. For 34764/34838 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 31215 event pairs, 912 based on Foata normal form. 27/4675 useless extension candidates. Maximal degree in co-relation 18994. Up to 3512 conditions per place. [2024-11-08 17:18:37,115 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 163 selfloop transitions, 50 changer transitions 3/230 dead transitions. [2024-11-08 17:18:37,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 230 transitions, 2241 flow [2024-11-08 17:18:37,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 17:18:37,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-08 17:18:37,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 348 transitions. [2024-11-08 17:18:37,118 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5050798258345428 [2024-11-08 17:18:37,118 INFO L175 Difference]: Start difference. First operand has 160 places, 160 transitions, 1365 flow. Second operand 13 states and 348 transitions. [2024-11-08 17:18:37,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 230 transitions, 2241 flow [2024-11-08 17:18:37,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 230 transitions, 2117 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-11-08 17:18:37,227 INFO L231 Difference]: Finished difference. Result has 167 places, 167 transitions, 1522 flow [2024-11-08 17:18:37,228 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1241, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1522, PETRI_PLACES=167, PETRI_TRANSITIONS=167} [2024-11-08 17:18:37,228 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 118 predicate places. [2024-11-08 17:18:37,228 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 167 transitions, 1522 flow [2024-11-08 17:18:37,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:37,229 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:18:37,229 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:37,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 17:18:37,230 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:18:37,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:37,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1286695179, now seen corresponding path program 13 times [2024-11-08 17:18:37,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:18:37,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118248182] [2024-11-08 17:18:37,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:37,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:18:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:37,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:18:37,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:18:37,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118248182] [2024-11-08 17:18:37,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118248182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:18:37,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:18:37,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:18:37,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233247937] [2024-11-08 17:18:37,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:18:37,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:18:37,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:18:37,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:18:37,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:18:38,065 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:18:38,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 167 transitions, 1522 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:38,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:18:38,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:18:38,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:18:39,117 INFO L124 PetriNetUnfolderBase]: 2732/4806 cut-off events. [2024-11-08 17:18:39,117 INFO L125 PetriNetUnfolderBase]: For 40007/40065 co-relation queries the response was YES. [2024-11-08 17:18:39,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19730 conditions, 4806 events. 2732/4806 cut-off events. For 40007/40065 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 31303 event pairs, 934 based on Foata normal form. 17/4663 useless extension candidates. Maximal degree in co-relation 19670. Up to 3670 conditions per place. [2024-11-08 17:18:39,161 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 168 selfloop transitions, 45 changer transitions 4/231 dead transitions. [2024-11-08 17:18:39,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 231 transitions, 2285 flow [2024-11-08 17:18:39,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 17:18:39,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-08 17:18:39,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 344 transitions. [2024-11-08 17:18:39,163 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49927431059506533 [2024-11-08 17:18:39,163 INFO L175 Difference]: Start difference. First operand has 167 places, 167 transitions, 1522 flow. Second operand 13 states and 344 transitions. [2024-11-08 17:18:39,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 231 transitions, 2285 flow [2024-11-08 17:18:39,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 231 transitions, 2111 flow, removed 59 selfloop flow, removed 8 redundant places. [2024-11-08 17:18:39,296 INFO L231 Difference]: Finished difference. Result has 173 places, 171 transitions, 1491 flow [2024-11-08 17:18:39,298 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1348, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1491, PETRI_PLACES=173, PETRI_TRANSITIONS=171} [2024-11-08 17:18:39,298 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 124 predicate places. [2024-11-08 17:18:39,298 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 171 transitions, 1491 flow [2024-11-08 17:18:39,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:39,300 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:18:39,300 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:39,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-08 17:18:39,300 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:18:39,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:39,301 INFO L85 PathProgramCache]: Analyzing trace with hash 2079397625, now seen corresponding path program 14 times [2024-11-08 17:18:39,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:18:39,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389469223] [2024-11-08 17:18:39,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:39,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:18:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:40,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:18:40,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:18:40,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389469223] [2024-11-08 17:18:40,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389469223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:18:40,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:18:40,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:18:40,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841244359] [2024-11-08 17:18:40,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:18:40,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:18:40,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:18:40,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:18:40,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:18:40,163 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:18:40,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 171 transitions, 1491 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:40,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:18:40,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:18:40,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:18:41,076 INFO L124 PetriNetUnfolderBase]: 2768/4866 cut-off events. [2024-11-08 17:18:41,076 INFO L125 PetriNetUnfolderBase]: For 37118/37198 co-relation queries the response was YES. [2024-11-08 17:18:41,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19431 conditions, 4866 events. 2768/4866 cut-off events. For 37118/37198 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 31862 event pairs, 1000 based on Foata normal form. 33/4735 useless extension candidates. Maximal degree in co-relation 19368. Up to 3801 conditions per place. [2024-11-08 17:18:41,117 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 166 selfloop transitions, 45 changer transitions 3/228 dead transitions. [2024-11-08 17:18:41,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 228 transitions, 2191 flow [2024-11-08 17:18:41,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 17:18:41,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-08 17:18:41,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 337 transitions. [2024-11-08 17:18:41,118 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48911465892597966 [2024-11-08 17:18:41,118 INFO L175 Difference]: Start difference. First operand has 173 places, 171 transitions, 1491 flow. Second operand 13 states and 337 transitions. [2024-11-08 17:18:41,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 228 transitions, 2191 flow [2024-11-08 17:18:41,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 228 transitions, 2069 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-11-08 17:18:41,219 INFO L231 Difference]: Finished difference. Result has 177 places, 174 transitions, 1509 flow [2024-11-08 17:18:41,220 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1369, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1509, PETRI_PLACES=177, PETRI_TRANSITIONS=174} [2024-11-08 17:18:41,220 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 128 predicate places. [2024-11-08 17:18:41,220 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 174 transitions, 1509 flow [2024-11-08 17:18:41,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:41,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:18:41,221 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:41,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-08 17:18:41,221 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:18:41,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:41,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1286803577, now seen corresponding path program 15 times [2024-11-08 17:18:41,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:18:41,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338199248] [2024-11-08 17:18:41,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:41,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:18:41,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:41,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:18:41,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:18:41,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338199248] [2024-11-08 17:18:41,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338199248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:18:41,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:18:41,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:18:41,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367316830] [2024-11-08 17:18:41,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:18:41,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:18:41,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:18:41,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:18:41,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:18:41,928 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:18:41,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 174 transitions, 1509 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:41,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:18:41,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:18:41,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:18:43,025 INFO L124 PetriNetUnfolderBase]: 2768/4885 cut-off events. [2024-11-08 17:18:43,025 INFO L125 PetriNetUnfolderBase]: For 37044/37124 co-relation queries the response was YES. [2024-11-08 17:18:43,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19377 conditions, 4885 events. 2768/4885 cut-off events. For 37044/37124 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 32143 event pairs, 960 based on Foata normal form. 33/4760 useless extension candidates. Maximal degree in co-relation 19312. Up to 3735 conditions per place. [2024-11-08 17:18:43,071 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 169 selfloop transitions, 49 changer transitions 4/236 dead transitions. [2024-11-08 17:18:43,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 236 transitions, 2252 flow [2024-11-08 17:18:43,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 17:18:43,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-08 17:18:43,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 343 transitions. [2024-11-08 17:18:43,072 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49782293178519593 [2024-11-08 17:18:43,073 INFO L175 Difference]: Start difference. First operand has 177 places, 174 transitions, 1509 flow. Second operand 13 states and 343 transitions. [2024-11-08 17:18:43,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 236 transitions, 2252 flow [2024-11-08 17:18:43,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 236 transitions, 2132 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-11-08 17:18:43,148 INFO L231 Difference]: Finished difference. Result has 181 places, 178 transitions, 1553 flow [2024-11-08 17:18:43,148 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1389, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1553, PETRI_PLACES=181, PETRI_TRANSITIONS=178} [2024-11-08 17:18:43,148 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 132 predicate places. [2024-11-08 17:18:43,148 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 178 transitions, 1553 flow [2024-11-08 17:18:43,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:43,149 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:18:43,149 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:43,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-08 17:18:43,149 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:18:43,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:43,150 INFO L85 PathProgramCache]: Analyzing trace with hash 639132107, now seen corresponding path program 16 times [2024-11-08 17:18:43,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:18:43,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966215112] [2024-11-08 17:18:43,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:43,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:18:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:43,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:18:43,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:18:43,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966215112] [2024-11-08 17:18:43,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966215112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:18:43,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:18:43,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:18:43,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828957801] [2024-11-08 17:18:43,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:18:43,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:18:43,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:18:43,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:18:43,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:18:43,922 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:18:43,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 178 transitions, 1553 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:43,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:18:43,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:18:43,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:18:44,800 INFO L124 PetriNetUnfolderBase]: 2768/4877 cut-off events. [2024-11-08 17:18:44,800 INFO L125 PetriNetUnfolderBase]: For 37754/37834 co-relation queries the response was YES. [2024-11-08 17:18:44,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19473 conditions, 4877 events. 2768/4877 cut-off events. For 37754/37834 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 32042 event pairs, 1007 based on Foata normal form. 25/4738 useless extension candidates. Maximal degree in co-relation 19406. Up to 3813 conditions per place. [2024-11-08 17:18:44,842 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 172 selfloop transitions, 43 changer transitions 3/232 dead transitions. [2024-11-08 17:18:44,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 232 transitions, 2233 flow [2024-11-08 17:18:44,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 17:18:44,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-08 17:18:44,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 334 transitions. [2024-11-08 17:18:44,844 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4847605224963715 [2024-11-08 17:18:44,844 INFO L175 Difference]: Start difference. First operand has 181 places, 178 transitions, 1553 flow. Second operand 13 states and 334 transitions. [2024-11-08 17:18:44,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 232 transitions, 2233 flow [2024-11-08 17:18:44,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 232 transitions, 2091 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-11-08 17:18:44,939 INFO L231 Difference]: Finished difference. Result has 185 places, 180 transitions, 1521 flow [2024-11-08 17:18:44,939 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1411, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1521, PETRI_PLACES=185, PETRI_TRANSITIONS=180} [2024-11-08 17:18:44,939 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 136 predicate places. [2024-11-08 17:18:44,939 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 180 transitions, 1521 flow [2024-11-08 17:18:44,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:44,940 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:18:44,940 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:44,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-08 17:18:44,940 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:18:44,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:44,941 INFO L85 PathProgramCache]: Analyzing trace with hash -553531563, now seen corresponding path program 17 times [2024-11-08 17:18:44,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:18:44,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953825899] [2024-11-08 17:18:44,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:44,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:18:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:45,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:18:45,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:18:45,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953825899] [2024-11-08 17:18:45,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953825899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:18:45,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:18:45,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:18:45,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119490097] [2024-11-08 17:18:45,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:18:45,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:18:45,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:18:45,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:18:45,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:18:45,790 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:18:45,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 180 transitions, 1521 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:45,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:18:45,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:18:45,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:18:46,853 INFO L124 PetriNetUnfolderBase]: 3007/5331 cut-off events. [2024-11-08 17:18:46,853 INFO L125 PetriNetUnfolderBase]: For 44943/44999 co-relation queries the response was YES. [2024-11-08 17:18:46,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21822 conditions, 5331 events. 3007/5331 cut-off events. For 44943/44999 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 36171 event pairs, 1026 based on Foata normal form. 11/5167 useless extension candidates. Maximal degree in co-relation 21753. Up to 3848 conditions per place. [2024-11-08 17:18:46,908 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 199 selfloop transitions, 52 changer transitions 3/268 dead transitions. [2024-11-08 17:18:46,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 268 transitions, 2652 flow [2024-11-08 17:18:46,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 17:18:46,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-08 17:18:46,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 379 transitions. [2024-11-08 17:18:46,909 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5107816711590296 [2024-11-08 17:18:46,909 INFO L175 Difference]: Start difference. First operand has 185 places, 180 transitions, 1521 flow. Second operand 14 states and 379 transitions. [2024-11-08 17:18:46,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 268 transitions, 2652 flow [2024-11-08 17:18:46,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 268 transitions, 2568 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-11-08 17:18:47,001 INFO L231 Difference]: Finished difference. Result has 192 places, 192 transitions, 1792 flow [2024-11-08 17:18:47,001 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1437, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1792, PETRI_PLACES=192, PETRI_TRANSITIONS=192} [2024-11-08 17:18:47,001 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 143 predicate places. [2024-11-08 17:18:47,001 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 192 transitions, 1792 flow [2024-11-08 17:18:47,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:47,002 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:18:47,002 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:47,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-08 17:18:47,002 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:18:47,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:47,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1302398807, now seen corresponding path program 18 times [2024-11-08 17:18:47,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:18:47,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811424044] [2024-11-08 17:18:47,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:47,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:18:47,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:47,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:18:47,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:18:47,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811424044] [2024-11-08 17:18:47,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811424044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:18:47,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:18:47,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:18:47,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729259688] [2024-11-08 17:18:47,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:18:47,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:18:47,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:18:47,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:18:47,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:18:47,792 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:18:47,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 192 transitions, 1792 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:47,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:18:47,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:18:47,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:18:48,938 INFO L124 PetriNetUnfolderBase]: 3206/5704 cut-off events. [2024-11-08 17:18:48,938 INFO L125 PetriNetUnfolderBase]: For 62327/62455 co-relation queries the response was YES. [2024-11-08 17:18:49,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24795 conditions, 5704 events. 3206/5704 cut-off events. For 62327/62455 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 39551 event pairs, 1038 based on Foata normal form. 41/5563 useless extension candidates. Maximal degree in co-relation 24722. Up to 4035 conditions per place. [2024-11-08 17:18:49,046 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 197 selfloop transitions, 62 changer transitions 3/276 dead transitions. [2024-11-08 17:18:49,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 276 transitions, 2993 flow [2024-11-08 17:18:49,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 17:18:49,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-08 17:18:49,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 378 transitions. [2024-11-08 17:18:49,047 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5094339622641509 [2024-11-08 17:18:49,048 INFO L175 Difference]: Start difference. First operand has 192 places, 192 transitions, 1792 flow. Second operand 14 states and 378 transitions. [2024-11-08 17:18:49,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 276 transitions, 2993 flow [2024-11-08 17:18:49,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 276 transitions, 2749 flow, removed 97 selfloop flow, removed 7 redundant places. [2024-11-08 17:18:49,171 INFO L231 Difference]: Finished difference. Result has 202 places, 203 transitions, 1967 flow [2024-11-08 17:18:49,171 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1570, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1967, PETRI_PLACES=202, PETRI_TRANSITIONS=203} [2024-11-08 17:18:49,171 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 153 predicate places. [2024-11-08 17:18:49,171 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 203 transitions, 1967 flow [2024-11-08 17:18:49,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:49,172 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:18:49,172 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:49,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-08 17:18:49,172 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:18:49,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:49,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1164286561, now seen corresponding path program 19 times [2024-11-08 17:18:49,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:18:49,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475384843] [2024-11-08 17:18:49,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:49,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:18:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:49,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:18:49,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:18:49,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475384843] [2024-11-08 17:18:49,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475384843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:18:49,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:18:49,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:18:49,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814035398] [2024-11-08 17:18:49,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:18:49,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:18:49,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:18:49,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:18:49,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:18:49,982 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:18:49,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 203 transitions, 1967 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:49,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:18:49,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:18:49,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:18:51,225 INFO L124 PetriNetUnfolderBase]: 3302/5879 cut-off events. [2024-11-08 17:18:51,225 INFO L125 PetriNetUnfolderBase]: For 73573/73669 co-relation queries the response was YES. [2024-11-08 17:18:51,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26308 conditions, 5879 events. 3302/5879 cut-off events. For 73573/73669 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 41262 event pairs, 1145 based on Foata normal form. 17/5709 useless extension candidates. Maximal degree in co-relation 26230. Up to 4307 conditions per place. [2024-11-08 17:18:51,297 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 206 selfloop transitions, 57 changer transitions 3/280 dead transitions. [2024-11-08 17:18:51,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 280 transitions, 3055 flow [2024-11-08 17:18:51,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 17:18:51,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-08 17:18:51,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 375 transitions. [2024-11-08 17:18:51,298 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5053908355795148 [2024-11-08 17:18:51,298 INFO L175 Difference]: Start difference. First operand has 202 places, 203 transitions, 1967 flow. Second operand 14 states and 375 transitions. [2024-11-08 17:18:51,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 280 transitions, 3055 flow [2024-11-08 17:18:51,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 280 transitions, 2830 flow, removed 80 selfloop flow, removed 9 redundant places. [2024-11-08 17:18:51,470 INFO L231 Difference]: Finished difference. Result has 209 places, 209 transitions, 2022 flow [2024-11-08 17:18:51,470 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1746, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2022, PETRI_PLACES=209, PETRI_TRANSITIONS=209} [2024-11-08 17:18:51,470 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 160 predicate places. [2024-11-08 17:18:51,470 INFO L471 AbstractCegarLoop]: Abstraction has has 209 places, 209 transitions, 2022 flow [2024-11-08 17:18:51,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:51,471 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:18:51,471 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:51,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-08 17:18:51,471 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:18:51,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:51,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1093661511, now seen corresponding path program 20 times [2024-11-08 17:18:51,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:18:51,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666519871] [2024-11-08 17:18:51,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:51,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:18:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:52,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:18:52,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:18:52,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666519871] [2024-11-08 17:18:52,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666519871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:18:52,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:18:52,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:18:52,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694928838] [2024-11-08 17:18:52,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:18:52,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:18:52,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:18:52,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:18:52,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:18:52,146 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:18:52,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 209 transitions, 2022 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:52,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:18:52,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:18:52,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:18:53,435 INFO L124 PetriNetUnfolderBase]: 3302/5897 cut-off events. [2024-11-08 17:18:53,435 INFO L125 PetriNetUnfolderBase]: For 71990/72064 co-relation queries the response was YES. [2024-11-08 17:18:53,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26193 conditions, 5897 events. 3302/5897 cut-off events. For 71990/72064 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 41423 event pairs, 1165 based on Foata normal form. 33/5741 useless extension candidates. Maximal degree in co-relation 26112. Up to 4384 conditions per place. [2024-11-08 17:18:53,515 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 203 selfloop transitions, 59 changer transitions 4/280 dead transitions. [2024-11-08 17:18:53,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 280 transitions, 2992 flow [2024-11-08 17:18:53,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 17:18:53,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-08 17:18:53,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 372 transitions. [2024-11-08 17:18:53,516 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5013477088948787 [2024-11-08 17:18:53,516 INFO L175 Difference]: Start difference. First operand has 209 places, 209 transitions, 2022 flow. Second operand 14 states and 372 transitions. [2024-11-08 17:18:53,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 280 transitions, 2992 flow [2024-11-08 17:18:53,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 280 transitions, 2823 flow, removed 51 selfloop flow, removed 10 redundant places. [2024-11-08 17:18:53,820 INFO L231 Difference]: Finished difference. Result has 214 places, 213 transitions, 2049 flow [2024-11-08 17:18:53,820 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1853, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2049, PETRI_PLACES=214, PETRI_TRANSITIONS=213} [2024-11-08 17:18:53,821 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 165 predicate places. [2024-11-08 17:18:53,821 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 213 transitions, 2049 flow [2024-11-08 17:18:53,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:53,821 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:18:53,821 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:53,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-08 17:18:53,822 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:18:53,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:53,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1456657205, now seen corresponding path program 21 times [2024-11-08 17:18:53,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:18:53,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159325612] [2024-11-08 17:18:53,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:53,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:18:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:54,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:18:54,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:18:54,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159325612] [2024-11-08 17:18:54,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159325612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:18:54,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:18:54,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:18:54,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574347890] [2024-11-08 17:18:54,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:18:54,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:18:54,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:18:54,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:18:54,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:18:54,768 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:18:54,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 213 transitions, 2049 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:54,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:18:54,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:18:54,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:18:55,986 INFO L124 PetriNetUnfolderBase]: 3439/6135 cut-off events. [2024-11-08 17:18:55,987 INFO L125 PetriNetUnfolderBase]: For 77911/78079 co-relation queries the response was YES. [2024-11-08 17:18:56,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27671 conditions, 6135 events. 3439/6135 cut-off events. For 77911/78079 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 43521 event pairs, 1377 based on Foata normal form. 41/5971 useless extension candidates. Maximal degree in co-relation 27588. Up to 4793 conditions per place. [2024-11-08 17:18:56,056 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 221 selfloop transitions, 40 changer transitions 3/278 dead transitions. [2024-11-08 17:18:56,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 278 transitions, 3268 flow [2024-11-08 17:18:56,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:18:56,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 17:18:56,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 326 transitions. [2024-11-08 17:18:56,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5125786163522013 [2024-11-08 17:18:56,058 INFO L175 Difference]: Start difference. First operand has 214 places, 213 transitions, 2049 flow. Second operand 12 states and 326 transitions. [2024-11-08 17:18:56,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 278 transitions, 3268 flow [2024-11-08 17:18:56,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 278 transitions, 3098 flow, removed 30 selfloop flow, removed 11 redundant places. [2024-11-08 17:18:56,188 INFO L231 Difference]: Finished difference. Result has 218 places, 222 transitions, 2264 flow [2024-11-08 17:18:56,188 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1885, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2264, PETRI_PLACES=218, PETRI_TRANSITIONS=222} [2024-11-08 17:18:56,188 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 169 predicate places. [2024-11-08 17:18:56,188 INFO L471 AbstractCegarLoop]: Abstraction has has 218 places, 222 transitions, 2264 flow [2024-11-08 17:18:56,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:56,189 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:18:56,189 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:56,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-08 17:18:56,189 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:18:56,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:56,189 INFO L85 PathProgramCache]: Analyzing trace with hash 709443205, now seen corresponding path program 22 times [2024-11-08 17:18:56,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:18:56,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904703637] [2024-11-08 17:18:56,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:56,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:18:56,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:56,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:18:56,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:18:56,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904703637] [2024-11-08 17:18:56,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904703637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:18:56,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:18:56,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:18:56,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689428884] [2024-11-08 17:18:56,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:18:56,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:18:56,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:18:56,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:18:56,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:18:57,034 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:18:57,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 222 transitions, 2264 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:57,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:18:57,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:18:57,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:18:58,543 INFO L124 PetriNetUnfolderBase]: 3535/6327 cut-off events. [2024-11-08 17:18:58,543 INFO L125 PetriNetUnfolderBase]: For 99673/99869 co-relation queries the response was YES. [2024-11-08 17:18:58,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29512 conditions, 6327 events. 3535/6327 cut-off events. For 99673/99869 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 45682 event pairs, 1399 based on Foata normal form. 43/6160 useless extension candidates. Maximal degree in co-relation 29425. Up to 4951 conditions per place. [2024-11-08 17:18:58,604 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 231 selfloop transitions, 39 changer transitions 3/287 dead transitions. [2024-11-08 17:18:58,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 287 transitions, 3404 flow [2024-11-08 17:18:58,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:18:58,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 17:18:58,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 328 transitions. [2024-11-08 17:18:58,606 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5157232704402516 [2024-11-08 17:18:58,606 INFO L175 Difference]: Start difference. First operand has 218 places, 222 transitions, 2264 flow. Second operand 12 states and 328 transitions. [2024-11-08 17:18:58,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 287 transitions, 3404 flow [2024-11-08 17:18:58,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 287 transitions, 3110 flow, removed 126 selfloop flow, removed 6 redundant places. [2024-11-08 17:18:58,854 INFO L231 Difference]: Finished difference. Result has 226 places, 228 transitions, 2245 flow [2024-11-08 17:18:58,855 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2002, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2245, PETRI_PLACES=226, PETRI_TRANSITIONS=228} [2024-11-08 17:18:58,855 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 177 predicate places. [2024-11-08 17:18:58,859 INFO L471 AbstractCegarLoop]: Abstraction has has 226 places, 228 transitions, 2245 flow [2024-11-08 17:18:58,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:58,860 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:18:58,860 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:58,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-08 17:18:58,861 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:18:58,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:58,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1104737195, now seen corresponding path program 23 times [2024-11-08 17:18:58,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:18:58,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729981845] [2024-11-08 17:18:58,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:58,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:18:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:59,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:18:59,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:18:59,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729981845] [2024-11-08 17:18:59,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729981845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:18:59,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:18:59,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:18:59,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804261718] [2024-11-08 17:18:59,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:18:59,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:18:59,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:18:59,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:18:59,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:18:59,848 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:18:59,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 228 transitions, 2245 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:18:59,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:18:59,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:18:59,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:19:01,605 INFO L124 PetriNetUnfolderBase]: 3737/6687 cut-off events. [2024-11-08 17:19:01,605 INFO L125 PetriNetUnfolderBase]: For 104488/104752 co-relation queries the response was YES. [2024-11-08 17:19:01,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31398 conditions, 6687 events. 3737/6687 cut-off events. For 104488/104752 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 48815 event pairs, 1439 based on Foata normal form. 41/6505 useless extension candidates. Maximal degree in co-relation 31307. Up to 5206 conditions per place. [2024-11-08 17:19:01,696 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 240 selfloop transitions, 41 changer transitions 3/298 dead transitions. [2024-11-08 17:19:01,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 298 transitions, 3530 flow [2024-11-08 17:19:01,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:19:01,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 17:19:01,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 331 transitions. [2024-11-08 17:19:01,698 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5204402515723271 [2024-11-08 17:19:01,698 INFO L175 Difference]: Start difference. First operand has 226 places, 228 transitions, 2245 flow. Second operand 12 states and 331 transitions. [2024-11-08 17:19:01,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 298 transitions, 3530 flow [2024-11-08 17:19:01,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 298 transitions, 3361 flow, removed 62 selfloop flow, removed 7 redundant places. [2024-11-08 17:19:01,918 INFO L231 Difference]: Finished difference. Result has 234 places, 238 transitions, 2449 flow [2024-11-08 17:19:01,919 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2076, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2449, PETRI_PLACES=234, PETRI_TRANSITIONS=238} [2024-11-08 17:19:01,919 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 185 predicate places. [2024-11-08 17:19:01,919 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 238 transitions, 2449 flow [2024-11-08 17:19:01,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:19:01,919 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:19:01,919 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:19:01,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-08 17:19:01,919 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:19:01,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:19:01,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1158789607, now seen corresponding path program 24 times [2024-11-08 17:19:01,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:19:01,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528447665] [2024-11-08 17:19:01,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:19:01,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:19:01,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:19:02,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:19:02,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:19:02,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528447665] [2024-11-08 17:19:02,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528447665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:19:02,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:19:02,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:19:02,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357810704] [2024-11-08 17:19:02,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:19:02,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:19:02,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:19:02,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:19:02,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:19:02,853 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:19:02,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 238 transitions, 2449 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:19:02,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:19:02,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:19:02,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:19:04,748 INFO L124 PetriNetUnfolderBase]: 3800/6784 cut-off events. [2024-11-08 17:19:04,748 INFO L125 PetriNetUnfolderBase]: For 124207/124533 co-relation queries the response was YES. [2024-11-08 17:19:04,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32761 conditions, 6784 events. 3800/6784 cut-off events. For 124207/124533 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 49585 event pairs, 1516 based on Foata normal form. 55/6604 useless extension candidates. Maximal degree in co-relation 32665. Up to 5364 conditions per place. [2024-11-08 17:19:04,828 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 240 selfloop transitions, 41 changer transitions 4/299 dead transitions. [2024-11-08 17:19:04,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 299 transitions, 3565 flow [2024-11-08 17:19:04,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:19:04,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 17:19:04,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 327 transitions. [2024-11-08 17:19:04,829 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5141509433962265 [2024-11-08 17:19:04,829 INFO L175 Difference]: Start difference. First operand has 234 places, 238 transitions, 2449 flow. Second operand 12 states and 327 transitions. [2024-11-08 17:19:04,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 299 transitions, 3565 flow [2024-11-08 17:19:05,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 299 transitions, 3337 flow, removed 93 selfloop flow, removed 6 redundant places. [2024-11-08 17:19:05,079 INFO L231 Difference]: Finished difference. Result has 241 places, 242 transitions, 2467 flow [2024-11-08 17:19:05,080 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2221, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2467, PETRI_PLACES=241, PETRI_TRANSITIONS=242} [2024-11-08 17:19:05,080 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 192 predicate places. [2024-11-08 17:19:05,080 INFO L471 AbstractCegarLoop]: Abstraction has has 241 places, 242 transitions, 2467 flow [2024-11-08 17:19:05,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:19:05,081 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:19:05,081 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:19:05,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-08 17:19:05,081 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:19:05,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:19:05,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1404147387, now seen corresponding path program 25 times [2024-11-08 17:19:05,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:19:05,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170554003] [2024-11-08 17:19:05,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:19:05,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:19:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:19:05,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:19:05,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:19:05,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170554003] [2024-11-08 17:19:05,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170554003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:19:05,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:19:05,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:19:05,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162613872] [2024-11-08 17:19:05,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:19:05,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:19:05,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:19:05,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:19:05,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:19:05,728 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:19:05,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 242 transitions, 2467 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:19:05,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:19:05,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:19:05,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:19:07,480 INFO L124 PetriNetUnfolderBase]: 3861/6900 cut-off events. [2024-11-08 17:19:07,480 INFO L125 PetriNetUnfolderBase]: For 125162/125382 co-relation queries the response was YES. [2024-11-08 17:19:07,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32889 conditions, 6900 events. 3861/6900 cut-off events. For 125162/125382 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 50680 event pairs, 1580 based on Foata normal form. 58/6723 useless extension candidates. Maximal degree in co-relation 32790. Up to 5548 conditions per place. [2024-11-08 17:19:07,565 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 238 selfloop transitions, 40 changer transitions 4/296 dead transitions. [2024-11-08 17:19:07,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 296 transitions, 3495 flow [2024-11-08 17:19:07,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:19:07,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 17:19:07,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 318 transitions. [2024-11-08 17:19:07,567 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-08 17:19:07,567 INFO L175 Difference]: Start difference. First operand has 241 places, 242 transitions, 2467 flow. Second operand 12 states and 318 transitions. [2024-11-08 17:19:07,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 296 transitions, 3495 flow [2024-11-08 17:19:07,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 296 transitions, 3304 flow, removed 71 selfloop flow, removed 8 redundant places. [2024-11-08 17:19:07,801 INFO L231 Difference]: Finished difference. Result has 247 places, 248 transitions, 2507 flow [2024-11-08 17:19:07,801 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2280, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2507, PETRI_PLACES=247, PETRI_TRANSITIONS=248} [2024-11-08 17:19:07,802 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 198 predicate places. [2024-11-08 17:19:07,802 INFO L471 AbstractCegarLoop]: Abstraction has has 247 places, 248 transitions, 2507 flow [2024-11-08 17:19:07,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:19:07,802 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:19:07,803 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:19:07,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-08 17:19:07,803 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:19:07,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:19:07,803 INFO L85 PathProgramCache]: Analyzing trace with hash -687584441, now seen corresponding path program 26 times [2024-11-08 17:19:07,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:19:07,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446504872] [2024-11-08 17:19:07,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:19:07,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:19:07,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:19:08,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:19:08,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:19:08,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446504872] [2024-11-08 17:19:08,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446504872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:19:08,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:19:08,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:19:08,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600237282] [2024-11-08 17:19:08,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:19:08,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:19:08,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:19:08,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:19:08,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:19:08,690 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:19:08,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 248 transitions, 2507 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:19:08,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:19:08,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:19:08,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:19:10,433 INFO L124 PetriNetUnfolderBase]: 4006/7144 cut-off events. [2024-11-08 17:19:10,434 INFO L125 PetriNetUnfolderBase]: For 129359/129581 co-relation queries the response was YES. [2024-11-08 17:19:10,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34173 conditions, 7144 events. 4006/7144 cut-off events. For 129359/129581 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 52724 event pairs, 1594 based on Foata normal form. 64/6973 useless extension candidates. Maximal degree in co-relation 34070. Up to 5572 conditions per place. [2024-11-08 17:19:10,528 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 249 selfloop transitions, 46 changer transitions 3/312 dead transitions. [2024-11-08 17:19:10,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 312 transitions, 3805 flow [2024-11-08 17:19:10,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:19:10,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 17:19:10,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 329 transitions. [2024-11-08 17:19:10,530 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5172955974842768 [2024-11-08 17:19:10,530 INFO L175 Difference]: Start difference. First operand has 247 places, 248 transitions, 2507 flow. Second operand 12 states and 329 transitions. [2024-11-08 17:19:10,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 312 transitions, 3805 flow [2024-11-08 17:19:10,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 312 transitions, 3627 flow, removed 65 selfloop flow, removed 7 redundant places. [2024-11-08 17:19:10,885 INFO L231 Difference]: Finished difference. Result has 254 places, 255 transitions, 2710 flow [2024-11-08 17:19:10,885 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2329, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2710, PETRI_PLACES=254, PETRI_TRANSITIONS=255} [2024-11-08 17:19:10,886 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 205 predicate places. [2024-11-08 17:19:10,886 INFO L471 AbstractCegarLoop]: Abstraction has has 254 places, 255 transitions, 2710 flow [2024-11-08 17:19:10,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:19:10,886 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:19:10,886 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:19:10,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-08 17:19:10,887 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:19:10,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:19:10,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1280477533, now seen corresponding path program 27 times [2024-11-08 17:19:10,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:19:10,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458884159] [2024-11-08 17:19:10,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:19:10,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:19:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:19:11,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:19:11,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:19:11,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458884159] [2024-11-08 17:19:11,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458884159] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:19:11,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:19:11,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:19:11,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518135966] [2024-11-08 17:19:11,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:19:11,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:19:11,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:19:11,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:19:11,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:19:11,811 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:19:11,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 255 transitions, 2710 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:19:11,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:19:11,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:19:11,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:19:13,663 INFO L124 PetriNetUnfolderBase]: 4102/7329 cut-off events. [2024-11-08 17:19:13,664 INFO L125 PetriNetUnfolderBase]: For 158148/158350 co-relation queries the response was YES. [2024-11-08 17:19:13,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36440 conditions, 7329 events. 4102/7329 cut-off events. For 158148/158350 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 54671 event pairs, 1706 based on Foata normal form. 48/7132 useless extension candidates. Maximal degree in co-relation 36333. Up to 5863 conditions per place. [2024-11-08 17:19:13,744 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 262 selfloop transitions, 40 changer transitions 3/319 dead transitions. [2024-11-08 17:19:13,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 319 transitions, 3993 flow [2024-11-08 17:19:13,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:19:13,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 17:19:13,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 328 transitions. [2024-11-08 17:19:13,745 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5157232704402516 [2024-11-08 17:19:13,745 INFO L175 Difference]: Start difference. First operand has 254 places, 255 transitions, 2710 flow. Second operand 12 states and 328 transitions. [2024-11-08 17:19:13,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 319 transitions, 3993 flow [2024-11-08 17:19:14,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 319 transitions, 3727 flow, removed 109 selfloop flow, removed 7 redundant places. [2024-11-08 17:19:14,170 INFO L231 Difference]: Finished difference. Result has 261 places, 261 transitions, 2731 flow [2024-11-08 17:19:14,170 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2448, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2731, PETRI_PLACES=261, PETRI_TRANSITIONS=261} [2024-11-08 17:19:14,170 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 212 predicate places. [2024-11-08 17:19:14,171 INFO L471 AbstractCegarLoop]: Abstraction has has 261 places, 261 transitions, 2731 flow [2024-11-08 17:19:14,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:19:14,171 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:19:14,171 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:19:14,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-08 17:19:14,171 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:19:14,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:19:14,172 INFO L85 PathProgramCache]: Analyzing trace with hash 920273327, now seen corresponding path program 28 times [2024-11-08 17:19:14,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:19:14,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925525691] [2024-11-08 17:19:14,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:19:14,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:19:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:19:14,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:19:14,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:19:14,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925525691] [2024-11-08 17:19:14,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925525691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:19:14,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:19:14,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:19:14,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433476369] [2024-11-08 17:19:14,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:19:14,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:19:14,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:19:14,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:19:14,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:19:14,950 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:19:14,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 261 transitions, 2731 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:19:14,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:19:14,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:19:14,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:19:16,838 INFO L124 PetriNetUnfolderBase]: 4102/7337 cut-off events. [2024-11-08 17:19:16,838 INFO L125 PetriNetUnfolderBase]: For 155204/155406 co-relation queries the response was YES. [2024-11-08 17:19:16,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35781 conditions, 7337 events. 4102/7337 cut-off events. For 155204/155406 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 54826 event pairs, 1701 based on Foata normal form. 54/7145 useless extension candidates. Maximal degree in co-relation 35670. Up to 5901 conditions per place. [2024-11-08 17:19:16,942 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 260 selfloop transitions, 41 changer transitions 4/319 dead transitions. [2024-11-08 17:19:16,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 319 transitions, 3834 flow [2024-11-08 17:19:16,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:19:16,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 17:19:16,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 325 transitions. [2024-11-08 17:19:16,943 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5110062893081762 [2024-11-08 17:19:16,943 INFO L175 Difference]: Start difference. First operand has 261 places, 261 transitions, 2731 flow. Second operand 12 states and 325 transitions. [2024-11-08 17:19:16,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 319 transitions, 3834 flow [2024-11-08 17:19:17,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 319 transitions, 3626 flow, removed 81 selfloop flow, removed 7 redundant places. [2024-11-08 17:19:17,230 INFO L231 Difference]: Finished difference. Result has 267 places, 265 transitions, 2680 flow [2024-11-08 17:19:17,230 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2523, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2680, PETRI_PLACES=267, PETRI_TRANSITIONS=265} [2024-11-08 17:19:17,230 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 218 predicate places. [2024-11-08 17:19:17,231 INFO L471 AbstractCegarLoop]: Abstraction has has 267 places, 265 transitions, 2680 flow [2024-11-08 17:19:17,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:19:17,231 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:19:17,231 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:19:17,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-08 17:19:17,231 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:19:17,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:19:17,232 INFO L85 PathProgramCache]: Analyzing trace with hash 855530805, now seen corresponding path program 29 times [2024-11-08 17:19:17,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:19:17,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891383637] [2024-11-08 17:19:17,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:19:17,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:19:17,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:19:17,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:19:17,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:19:17,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891383637] [2024-11-08 17:19:17,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891383637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:19:17,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:19:17,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:19:17,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358661511] [2024-11-08 17:19:17,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:19:17,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:19:17,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:19:17,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:19:17,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:19:18,060 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:19:18,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 265 transitions, 2680 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:19:18,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:19:18,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:19:18,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:19:19,691 INFO L124 PetriNetUnfolderBase]: 4102/7335 cut-off events. [2024-11-08 17:19:19,691 INFO L125 PetriNetUnfolderBase]: For 147286/147512 co-relation queries the response was YES. [2024-11-08 17:19:19,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35278 conditions, 7335 events. 4102/7335 cut-off events. For 147286/147512 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 54822 event pairs, 1697 based on Foata normal form. 70/7161 useless extension candidates. Maximal degree in co-relation 35164. Up to 5897 conditions per place. [2024-11-08 17:19:19,793 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 258 selfloop transitions, 45 changer transitions 4/321 dead transitions. [2024-11-08 17:19:19,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 321 transitions, 3731 flow [2024-11-08 17:19:19,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:19:19,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 17:19:19,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 324 transitions. [2024-11-08 17:19:19,795 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5094339622641509 [2024-11-08 17:19:19,795 INFO L175 Difference]: Start difference. First operand has 267 places, 265 transitions, 2680 flow. Second operand 12 states and 324 transitions. [2024-11-08 17:19:19,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 321 transitions, 3731 flow [2024-11-08 17:19:20,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 321 transitions, 3585 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-11-08 17:19:20,312 INFO L231 Difference]: Finished difference. Result has 271 places, 269 transitions, 2710 flow [2024-11-08 17:19:20,312 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2534, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2710, PETRI_PLACES=271, PETRI_TRANSITIONS=269} [2024-11-08 17:19:20,313 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 222 predicate places. [2024-11-08 17:19:20,313 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 269 transitions, 2710 flow [2024-11-08 17:19:20,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:19:20,313 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:19:20,313 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:19:20,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-08 17:19:20,313 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:19:20,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:19:20,314 INFO L85 PathProgramCache]: Analyzing trace with hash 2111161191, now seen corresponding path program 30 times [2024-11-08 17:19:20,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:19:20,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416532966] [2024-11-08 17:19:20,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:19:20,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:19:20,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:19:21,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:19:21,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:19:21,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416532966] [2024-11-08 17:19:21,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416532966] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:19:21,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:19:21,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:19:21,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430932700] [2024-11-08 17:19:21,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:19:21,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:19:21,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:19:21,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:19:21,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:19:21,183 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:19:21,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 269 transitions, 2710 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:19:21,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:19:21,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:19:21,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:19:23,098 INFO L124 PetriNetUnfolderBase]: 4138/7401 cut-off events. [2024-11-08 17:19:23,098 INFO L125 PetriNetUnfolderBase]: For 146280/146506 co-relation queries the response was YES. [2024-11-08 17:19:23,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35326 conditions, 7401 events. 4138/7401 cut-off events. For 146280/146506 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 55397 event pairs, 1759 based on Foata normal form. 70/7215 useless extension candidates. Maximal degree in co-relation 35210. Up to 6031 conditions per place. [2024-11-08 17:19:23,225 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 262 selfloop transitions, 41 changer transitions 3/320 dead transitions. [2024-11-08 17:19:23,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 320 transitions, 3736 flow [2024-11-08 17:19:23,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:19:23,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 17:19:23,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 318 transitions. [2024-11-08 17:19:23,227 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-08 17:19:23,227 INFO L175 Difference]: Start difference. First operand has 271 places, 269 transitions, 2710 flow. Second operand 12 states and 318 transitions. [2024-11-08 17:19:23,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 320 transitions, 3736 flow [2024-11-08 17:19:23,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 320 transitions, 3570 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-11-08 17:19:23,788 INFO L231 Difference]: Finished difference. Result has 275 places, 272 transitions, 2700 flow [2024-11-08 17:19:23,788 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2544, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2700, PETRI_PLACES=275, PETRI_TRANSITIONS=272} [2024-11-08 17:19:23,788 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 226 predicate places. [2024-11-08 17:19:23,788 INFO L471 AbstractCegarLoop]: Abstraction has has 275 places, 272 transitions, 2700 flow [2024-11-08 17:19:23,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:19:23,789 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:19:23,789 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:19:23,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-08 17:19:23,789 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:19:23,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:19:23,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1842706203, now seen corresponding path program 31 times [2024-11-08 17:19:23,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:19:23,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539669180] [2024-11-08 17:19:23,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:19:23,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:19:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:19:24,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:19:24,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:19:24,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539669180] [2024-11-08 17:19:24,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539669180] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:19:24,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:19:24,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:19:24,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333171478] [2024-11-08 17:19:24,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:19:24,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:19:24,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:19:24,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:19:24,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:19:24,451 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:19:24,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 272 transitions, 2700 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:19:24,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:19:24,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:19:24,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:19:26,086 INFO L124 PetriNetUnfolderBase]: 4138/7414 cut-off events. [2024-11-08 17:19:26,087 INFO L125 PetriNetUnfolderBase]: For 143411/143637 co-relation queries the response was YES. [2024-11-08 17:19:26,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35059 conditions, 7414 events. 4138/7414 cut-off events. For 143411/143637 co-relation queries the response was YES. Maximal size of possible extension queue 604. Compared 55776 event pairs, 1766 based on Foata normal form. 62/7220 useless extension candidates. Maximal degree in co-relation 34941. Up to 6044 conditions per place. [2024-11-08 17:19:26,193 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 264 selfloop transitions, 39 changer transitions 3/320 dead transitions. [2024-11-08 17:19:26,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 320 transitions, 3676 flow [2024-11-08 17:19:26,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:19:26,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 17:19:26,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 315 transitions. [2024-11-08 17:19:26,194 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49528301886792453 [2024-11-08 17:19:26,194 INFO L175 Difference]: Start difference. First operand has 275 places, 272 transitions, 2700 flow. Second operand 12 states and 315 transitions. [2024-11-08 17:19:26,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 320 transitions, 3676 flow [2024-11-08 17:19:26,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 320 transitions, 3528 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-11-08 17:19:26,782 INFO L231 Difference]: Finished difference. Result has 279 places, 274 transitions, 2656 flow [2024-11-08 17:19:26,782 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2554, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2656, PETRI_PLACES=279, PETRI_TRANSITIONS=274} [2024-11-08 17:19:26,783 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 230 predicate places. [2024-11-08 17:19:26,783 INFO L471 AbstractCegarLoop]: Abstraction has has 279 places, 274 transitions, 2656 flow [2024-11-08 17:19:26,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:19:26,783 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:19:26,783 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:19:26,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-08 17:19:26,783 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:19:26,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:19:26,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1897018463, now seen corresponding path program 32 times [2024-11-08 17:19:26,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:19:26,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790445369] [2024-11-08 17:19:26,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:19:26,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:19:26,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:19:27,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:19:27,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:19:27,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790445369] [2024-11-08 17:19:27,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790445369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:19:27,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:19:27,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:19:27,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543613012] [2024-11-08 17:19:27,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:19:27,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:19:27,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:19:27,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:19:27,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:19:27,685 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:19:27,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 274 transitions, 2656 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:19:27,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:19:27,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:19:27,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:19:29,581 INFO L124 PetriNetUnfolderBase]: 4278/7654 cut-off events. [2024-11-08 17:19:29,581 INFO L125 PetriNetUnfolderBase]: For 159279/159531 co-relation queries the response was YES. [2024-11-08 17:19:29,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36966 conditions, 7654 events. 4278/7654 cut-off events. For 159279/159531 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 57824 event pairs, 1798 based on Foata normal form. 54/7439 useless extension candidates. Maximal degree in co-relation 36846. Up to 6157 conditions per place. [2024-11-08 17:19:29,705 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 281 selfloop transitions, 38 changer transitions 3/336 dead transitions. [2024-11-08 17:19:29,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 336 transitions, 4153 flow [2024-11-08 17:19:29,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:19:29,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 17:19:29,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 326 transitions. [2024-11-08 17:19:29,706 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5125786163522013 [2024-11-08 17:19:29,707 INFO L175 Difference]: Start difference. First operand has 279 places, 274 transitions, 2656 flow. Second operand 12 states and 326 transitions. [2024-11-08 17:19:29,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 336 transitions, 4153 flow [2024-11-08 17:19:30,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 336 transitions, 4077 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-11-08 17:19:30,350 INFO L231 Difference]: Finished difference. Result has 285 places, 283 transitions, 3065 flow [2024-11-08 17:19:30,350 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2580, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3065, PETRI_PLACES=285, PETRI_TRANSITIONS=283} [2024-11-08 17:19:30,351 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 236 predicate places. [2024-11-08 17:19:30,351 INFO L471 AbstractCegarLoop]: Abstraction has has 285 places, 283 transitions, 3065 flow [2024-11-08 17:19:30,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:19:30,351 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:19:30,352 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:19:30,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-08 17:19:30,352 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:19:30,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:19:30,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1209896919, now seen corresponding path program 33 times [2024-11-08 17:19:30,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:19:30,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752038079] [2024-11-08 17:19:30,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:19:30,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:19:30,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:19:30,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:19:30,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:19:30,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752038079] [2024-11-08 17:19:30,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752038079] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:19:30,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:19:30,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:19:30,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353532823] [2024-11-08 17:19:30,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:19:30,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:19:30,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:19:30,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:19:30,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:19:31,072 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:19:31,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 283 transitions, 3065 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:19:31,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:19:31,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:19:31,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:19:32,954 INFO L124 PetriNetUnfolderBase]: 4332/7772 cut-off events. [2024-11-08 17:19:32,954 INFO L125 PetriNetUnfolderBase]: For 200569/200841 co-relation queries the response was YES. [2024-11-08 17:19:33,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39094 conditions, 7772 events. 4332/7772 cut-off events. For 200569/200841 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 59215 event pairs, 1834 based on Foata normal form. 55/7557 useless extension candidates. Maximal degree in co-relation 38970. Up to 6247 conditions per place. [2024-11-08 17:19:33,085 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 290 selfloop transitions, 37 changer transitions 3/344 dead transitions. [2024-11-08 17:19:33,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 344 transitions, 4396 flow [2024-11-08 17:19:33,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:19:33,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 17:19:33,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 328 transitions. [2024-11-08 17:19:33,086 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5157232704402516 [2024-11-08 17:19:33,086 INFO L175 Difference]: Start difference. First operand has 285 places, 283 transitions, 3065 flow. Second operand 12 states and 328 transitions. [2024-11-08 17:19:33,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 344 transitions, 4396 flow [2024-11-08 17:19:33,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 344 transitions, 4060 flow, removed 149 selfloop flow, removed 6 redundant places. [2024-11-08 17:19:33,730 INFO L231 Difference]: Finished difference. Result has 293 places, 288 transitions, 3021 flow [2024-11-08 17:19:33,730 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2729, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3021, PETRI_PLACES=293, PETRI_TRANSITIONS=288} [2024-11-08 17:19:33,730 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 244 predicate places. [2024-11-08 17:19:33,730 INFO L471 AbstractCegarLoop]: Abstraction has has 293 places, 288 transitions, 3021 flow [2024-11-08 17:19:33,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:19:33,731 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:19:33,731 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:19:33,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-08 17:19:33,731 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:19:33,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:19:33,732 INFO L85 PathProgramCache]: Analyzing trace with hash 202171807, now seen corresponding path program 34 times [2024-11-08 17:19:33,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:19:33,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276415912] [2024-11-08 17:19:33,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:19:33,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:19:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:19:34,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:19:34,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:19:34,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276415912] [2024-11-08 17:19:34,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276415912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:19:34,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:19:34,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:19:34,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589617268] [2024-11-08 17:19:34,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:19:34,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:19:34,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:19:34,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:19:34,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:19:34,568 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:19:34,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 288 transitions, 3021 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:19:34,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:19:34,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:19:34,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:19:36,682 INFO L124 PetriNetUnfolderBase]: 4494/8055 cut-off events. [2024-11-08 17:19:36,682 INFO L125 PetriNetUnfolderBase]: For 227397/227767 co-relation queries the response was YES. [2024-11-08 17:19:36,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41433 conditions, 8055 events. 4494/8055 cut-off events. For 227397/227767 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 61820 event pairs, 1889 based on Foata normal form. 54/7828 useless extension candidates. Maximal degree in co-relation 41305. Up to 6446 conditions per place. [2024-11-08 17:19:36,814 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 298 selfloop transitions, 39 changer transitions 3/354 dead transitions. [2024-11-08 17:19:36,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 354 transitions, 4584 flow [2024-11-08 17:19:36,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:19:36,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 17:19:36,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 331 transitions. [2024-11-08 17:19:36,815 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5204402515723271 [2024-11-08 17:19:36,815 INFO L175 Difference]: Start difference. First operand has 293 places, 288 transitions, 3021 flow. Second operand 12 states and 331 transitions. [2024-11-08 17:19:36,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 354 transitions, 4584 flow [2024-11-08 17:19:37,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 354 transitions, 4355 flow, removed 94 selfloop flow, removed 7 redundant places. [2024-11-08 17:19:37,168 INFO L231 Difference]: Finished difference. Result has 301 places, 297 transitions, 3251 flow [2024-11-08 17:19:37,169 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2792, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3251, PETRI_PLACES=301, PETRI_TRANSITIONS=297} [2024-11-08 17:19:37,169 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 252 predicate places. [2024-11-08 17:19:37,169 INFO L471 AbstractCegarLoop]: Abstraction has has 301 places, 297 transitions, 3251 flow [2024-11-08 17:19:37,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:19:37,169 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:19:37,169 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:19:37,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-08 17:19:37,170 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:19:37,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:19:37,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1271131309, now seen corresponding path program 35 times [2024-11-08 17:19:37,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:19:37,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676478472] [2024-11-08 17:19:37,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:19:37,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:19:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:19:37,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:19:37,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:19:37,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676478472] [2024-11-08 17:19:37,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676478472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:19:37,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:19:37,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:19:37,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485879485] [2024-11-08 17:19:37,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:19:37,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:19:37,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:19:37,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:19:37,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:19:37,716 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:19:37,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 297 transitions, 3251 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:19:37,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:19:37,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:19:37,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:19:39,543 INFO L124 PetriNetUnfolderBase]: 4494/8044 cut-off events. [2024-11-08 17:19:39,544 INFO L125 PetriNetUnfolderBase]: For 244396/244946 co-relation queries the response was YES. [2024-11-08 17:19:39,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41537 conditions, 8044 events. 4494/8044 cut-off events. For 244396/244946 co-relation queries the response was YES. Maximal size of possible extension queue 678. Compared 61638 event pairs, 1944 based on Foata normal form. 67/7823 useless extension candidates. Maximal degree in co-relation 41404. Up to 6584 conditions per place. [2024-11-08 17:19:39,699 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 295 selfloop transitions, 36 changer transitions 3/348 dead transitions. [2024-11-08 17:19:39,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 348 transitions, 4396 flow [2024-11-08 17:19:39,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:19:39,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 17:19:39,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 319 transitions. [2024-11-08 17:19:39,700 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5015723270440252 [2024-11-08 17:19:39,700 INFO L175 Difference]: Start difference. First operand has 301 places, 297 transitions, 3251 flow. Second operand 12 states and 319 transitions. [2024-11-08 17:19:39,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 348 transitions, 4396 flow [2024-11-08 17:19:40,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 348 transitions, 4082 flow, removed 138 selfloop flow, removed 6 redundant places. [2024-11-08 17:19:40,138 INFO L231 Difference]: Finished difference. Result has 308 places, 300 transitions, 3090 flow [2024-11-08 17:19:40,139 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2937, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3090, PETRI_PLACES=308, PETRI_TRANSITIONS=300} [2024-11-08 17:19:40,139 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 259 predicate places. [2024-11-08 17:19:40,140 INFO L471 AbstractCegarLoop]: Abstraction has has 308 places, 300 transitions, 3090 flow [2024-11-08 17:19:40,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:19:40,140 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:19:40,140 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:19:40,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-08 17:19:40,140 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:19:40,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:19:40,141 INFO L85 PathProgramCache]: Analyzing trace with hash 706289899, now seen corresponding path program 36 times [2024-11-08 17:19:40,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:19:40,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232937088] [2024-11-08 17:19:40,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:19:40,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:19:40,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:19:40,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:19:40,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:19:40,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232937088] [2024-11-08 17:19:40,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232937088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:19:40,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:19:40,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:19:40,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686124838] [2024-11-08 17:19:40,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:19:40,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:19:40,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:19:40,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:19:40,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:19:40,852 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:19:40,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 300 transitions, 3090 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:19:40,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:19:40,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:19:40,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:19:43,134 INFO L124 PetriNetUnfolderBase]: 4555/8163 cut-off events. [2024-11-08 17:19:43,134 INFO L125 PetriNetUnfolderBase]: For 226059/226333 co-relation queries the response was YES. [2024-11-08 17:19:43,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40886 conditions, 8163 events. 4555/8163 cut-off events. For 226059/226333 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 62764 event pairs, 1983 based on Foata normal form. 68/7946 useless extension candidates. Maximal degree in co-relation 40750. Up to 6684 conditions per place. [2024-11-08 17:19:43,259 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 295 selfloop transitions, 38 changer transitions 4/351 dead transitions. [2024-11-08 17:19:43,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 351 transitions, 4270 flow [2024-11-08 17:19:43,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:19:43,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 17:19:43,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 318 transitions. [2024-11-08 17:19:43,261 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-08 17:19:43,261 INFO L175 Difference]: Start difference. First operand has 308 places, 300 transitions, 3090 flow. Second operand 12 states and 318 transitions. [2024-11-08 17:19:43,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 351 transitions, 4270 flow [2024-11-08 17:19:43,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 351 transitions, 4142 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-11-08 17:19:43,779 INFO L231 Difference]: Finished difference. Result has 313 places, 306 transitions, 3231 flow [2024-11-08 17:19:43,779 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2962, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3231, PETRI_PLACES=313, PETRI_TRANSITIONS=306} [2024-11-08 17:19:43,780 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 264 predicate places. [2024-11-08 17:19:43,780 INFO L471 AbstractCegarLoop]: Abstraction has has 313 places, 306 transitions, 3231 flow [2024-11-08 17:19:43,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:19:43,781 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:19:43,781 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:19:43,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-08 17:19:43,781 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:19:43,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:19:43,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1536740101, now seen corresponding path program 37 times [2024-11-08 17:19:43,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:19:43,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327484547] [2024-11-08 17:19:43,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:19:43,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:19:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:19:44,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:19:44,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:19:44,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327484547] [2024-11-08 17:19:44,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327484547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:19:44,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:19:44,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:19:44,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849714858] [2024-11-08 17:19:44,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:19:44,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:19:44,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:19:44,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:19:44,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:19:44,875 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:19:44,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 306 transitions, 3231 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:19:44,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:19:44,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:19:44,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:19:46,959 INFO L124 PetriNetUnfolderBase]: 4706/8407 cut-off events. [2024-11-08 17:19:46,959 INFO L125 PetriNetUnfolderBase]: For 248988/249262 co-relation queries the response was YES. [2024-11-08 17:19:47,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43142 conditions, 8407 events. 4706/8407 cut-off events. For 248988/249262 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 64847 event pairs, 2003 based on Foata normal form. 74/8198 useless extension candidates. Maximal degree in co-relation 43003. Up to 6708 conditions per place. [2024-11-08 17:19:47,110 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 306 selfloop transitions, 44 changer transitions 3/367 dead transitions. [2024-11-08 17:19:47,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 367 transitions, 4773 flow [2024-11-08 17:19:47,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:19:47,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 17:19:47,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 329 transitions. [2024-11-08 17:19:47,112 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5172955974842768 [2024-11-08 17:19:47,112 INFO L175 Difference]: Start difference. First operand has 313 places, 306 transitions, 3231 flow. Second operand 12 states and 329 transitions. [2024-11-08 17:19:47,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 367 transitions, 4773 flow [2024-11-08 17:19:47,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 367 transitions, 4541 flow, removed 94 selfloop flow, removed 7 redundant places. [2024-11-08 17:19:47,588 INFO L231 Difference]: Finished difference. Result has 320 places, 313 transitions, 3468 flow [2024-11-08 17:19:47,589 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2999, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3468, PETRI_PLACES=320, PETRI_TRANSITIONS=313} [2024-11-08 17:19:47,589 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 271 predicate places. [2024-11-08 17:19:47,589 INFO L471 AbstractCegarLoop]: Abstraction has has 320 places, 313 transitions, 3468 flow [2024-11-08 17:19:47,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:19:47,589 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:19:47,589 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:19:47,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-08 17:19:47,590 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 17:19:47,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:19:47,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1491413655, now seen corresponding path program 38 times [2024-11-08 17:19:47,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:19:47,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184525437] [2024-11-08 17:19:47,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:19:47,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:19:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:19:48,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:19:48,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:19:48,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184525437] [2024-11-08 17:19:48,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184525437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:19:48,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:19:48,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:19:48,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643531539] [2024-11-08 17:19:48,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:19:48,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:19:48,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:19:48,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:19:48,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:19:48,568 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-11-08 17:19:48,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 313 transitions, 3468 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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) [2024-11-08 17:19:48,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:19:48,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-11-08 17:19:48,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:19:50,992 INFO L124 PetriNetUnfolderBase]: 4769/8524 cut-off events. [2024-11-08 17:19:50,992 INFO L125 PetriNetUnfolderBase]: For 280245/280507 co-relation queries the response was YES. [2024-11-08 17:19:51,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45018 conditions, 8524 events. 4769/8524 cut-off events. For 280245/280507 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 65880 event pairs, 2085 based on Foata normal form. 58/8296 useless extension candidates. Maximal degree in co-relation 44875. Up to 6931 conditions per place. [2024-11-08 17:19:51,154 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 318 selfloop transitions, 38 changer transitions 3/373 dead transitions. [2024-11-08 17:19:51,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 373 transitions, 4942 flow [2024-11-08 17:19:51,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:19:51,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 17:19:51,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 328 transitions. [2024-11-08 17:19:51,157 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5157232704402516 [2024-11-08 17:19:51,157 INFO L175 Difference]: Start difference. First operand has 320 places, 313 transitions, 3468 flow. Second operand 12 states and 328 transitions.