./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19a3040b-b809-48da-995e-ae57a4535de5/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19a3040b-b809-48da-995e-ae57a4535de5/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19a3040b-b809-48da-995e-ae57a4535de5/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19a3040b-b809-48da-995e-ae57a4535de5/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19a3040b-b809-48da-995e-ae57a4535de5/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19a3040b-b809-48da-995e-ae57a4535de5/bin/uautomizer-verify-BQ2R08f2Ya --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 9d6df98e8ac4880739ff8c7fa9cf00b32c56a4c64770b2bc9bcfef3d013872fa --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:09:13,468 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:09:13,532 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19a3040b-b809-48da-995e-ae57a4535de5/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 00:09:13,536 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:09:13,537 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:09:13,561 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:09:13,562 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:09:13,562 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:09:13,563 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:09:13,564 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:09:13,564 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:09:13,565 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:09:13,565 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:09:13,566 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:09:13,566 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:09:13,567 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:09:13,567 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:09:13,568 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:09:13,568 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:09:13,569 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:09:13,569 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:09:13,570 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:09:13,570 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:09:13,571 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:09:13,572 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:09:13,572 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:09:13,572 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:09:13,573 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:09:13,573 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:09:13,574 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:09:13,574 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:09:13,575 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:09:13,575 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:09:13,576 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:09:13,576 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:09:13,577 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:09:13,577 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:09:13,577 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:09:13,578 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:09:13,578 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:09:13,587 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:09:13,588 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:09:13,588 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_19a3040b-b809-48da-995e-ae57a4535de5/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19a3040b-b809-48da-995e-ae57a4535de5/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d6df98e8ac4880739ff8c7fa9cf00b32c56a4c64770b2bc9bcfef3d013872fa [2023-11-29 00:09:13,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:09:13,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:09:13,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:09:13,850 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:09:13,850 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:09:13,851 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19a3040b-b809-48da-995e-ae57a4535de5/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-29 00:09:16,636 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:09:16,854 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:09:16,855 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19a3040b-b809-48da-995e-ae57a4535de5/sv-benchmarks/c/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-29 00:09:16,871 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19a3040b-b809-48da-995e-ae57a4535de5/bin/uautomizer-verify-BQ2R08f2Ya/data/433d42fd2/3eda43dcbfe44c3bb8a2554c41333c9a/FLAGcf0d9c622 [2023-11-29 00:09:16,883 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19a3040b-b809-48da-995e-ae57a4535de5/bin/uautomizer-verify-BQ2R08f2Ya/data/433d42fd2/3eda43dcbfe44c3bb8a2554c41333c9a [2023-11-29 00:09:16,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:09:16,886 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:09:16,888 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:09:16,888 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:09:16,893 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:09:16,894 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:09:16" (1/1) ... [2023-11-29 00:09:16,895 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d019ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:09:16, skipping insertion in model container [2023-11-29 00:09:16,895 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:09:16" (1/1) ... [2023-11-29 00:09:16,941 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:09:17,081 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19a3040b-b809-48da-995e-ae57a4535de5/sv-benchmarks/c/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1038,1051] [2023-11-29 00:09:17,278 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:09:17,288 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:09:17,297 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19a3040b-b809-48da-995e-ae57a4535de5/sv-benchmarks/c/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1038,1051] [2023-11-29 00:09:17,346 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:09:17,373 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:09:17,373 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:09:17,379 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:09:17,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:09:17 WrapperNode [2023-11-29 00:09:17,379 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:09:17,380 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:09:17,380 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:09:17,381 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:09:17,386 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:09:17" (1/1) ... [2023-11-29 00:09:17,403 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:09:17" (1/1) ... [2023-11-29 00:09:17,433 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 153 [2023-11-29 00:09:17,433 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:09:17,434 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:09:17,434 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:09:17,434 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:09:17,444 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:09:17" (1/1) ... [2023-11-29 00:09:17,445 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:09:17" (1/1) ... [2023-11-29 00:09:17,447 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:09:17" (1/1) ... [2023-11-29 00:09:17,465 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-11-29 00:09:17,466 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:09:17" (1/1) ... [2023-11-29 00:09:17,466 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:09:17" (1/1) ... [2023-11-29 00:09:17,477 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:09:17" (1/1) ... [2023-11-29 00:09:17,479 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:09:17" (1/1) ... [2023-11-29 00:09:17,482 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:09:17" (1/1) ... [2023-11-29 00:09:17,484 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:09:17" (1/1) ... [2023-11-29 00:09:17,488 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:09:17,489 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:09:17,490 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:09:17,490 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:09:17,491 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:09:17" (1/1) ... [2023-11-29 00:09:17,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:09:17,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19a3040b-b809-48da-995e-ae57a4535de5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:09:17,516 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19a3040b-b809-48da-995e-ae57a4535de5/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:09:17,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19a3040b-b809-48da-995e-ae57a4535de5/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:09:17,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 00:09:17,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 00:09:17,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 00:09:17,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 00:09:17,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:09:17,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 00:09:17,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 00:09:17,552 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-29 00:09:17,552 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-29 00:09:17,553 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-29 00:09:17,553 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-29 00:09:17,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:09:17,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 00:09:17,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 00:09:17,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 00:09:17,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:09:17,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:09:17,556 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 00:09:17,690 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:09:17,692 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:09:18,018 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:09:18,188 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:09:18,188 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 00:09:18,188 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:09:18 BoogieIcfgContainer [2023-11-29 00:09:18,189 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:09:18,191 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:09:18,191 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:09:18,193 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:09:18,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:09:16" (1/3) ... [2023-11-29 00:09:18,194 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@514a1d68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:09:18, skipping insertion in model container [2023-11-29 00:09:18,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:09:17" (2/3) ... [2023-11-29 00:09:18,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@514a1d68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:09:18, skipping insertion in model container [2023-11-29 00:09:18,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:09:18" (3/3) ... [2023-11-29 00:09:18,196 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-29 00:09:18,203 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 00:09:18,212 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:09:18,212 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 00:09:18,212 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 00:09:18,248 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 00:09:18,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 33 transitions, 74 flow [2023-11-29 00:09:18,313 INFO L124 PetriNetUnfolderBase]: 1/31 cut-off events. [2023-11-29 00:09:18,313 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:09:18,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 31 events. 1/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2023-11-29 00:09:18,317 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 33 transitions, 74 flow [2023-11-29 00:09:18,321 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 31 transitions, 68 flow [2023-11-29 00:09:18,332 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:09:18,340 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@58c9bcf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:09:18,340 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-29 00:09:18,346 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:09:18,347 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-11-29 00:09:18,347 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:09:18,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:09:18,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 00:09:18,348 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 00:09:18,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:09:18,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1032196371, now seen corresponding path program 1 times [2023-11-29 00:09:18,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:09:18,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748511590] [2023-11-29 00:09:18,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:09:18,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:09:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:09:18,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:09:18,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:09:18,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748511590] [2023-11-29 00:09:18,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748511590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:09:18,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:09:18,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:09:18,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064297475] [2023-11-29 00:09:18,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:09:18,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:09:18,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:09:18,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:09:18,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:09:18,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 33 [2023-11-29 00:09:18,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:18,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:09:18,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 33 [2023-11-29 00:09:18,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:09:19,055 INFO L124 PetriNetUnfolderBase]: 264/581 cut-off events. [2023-11-29 00:09:19,055 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 00:09:19,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1047 conditions, 581 events. 264/581 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3136 event pairs, 32 based on Foata normal form. 25/599 useless extension candidates. Maximal degree in co-relation 1037. Up to 373 conditions per place. [2023-11-29 00:09:19,061 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 24 selfloop transitions, 2 changer transitions 2/39 dead transitions. [2023-11-29 00:09:19,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 39 transitions, 140 flow [2023-11-29 00:09:19,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:09:19,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:09:19,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2023-11-29 00:09:19,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7070707070707071 [2023-11-29 00:09:19,072 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 70 transitions. [2023-11-29 00:09:19,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 70 transitions. [2023-11-29 00:09:19,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:09:19,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 70 transitions. [2023-11-29 00:09:19,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:19,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:19,080 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:19,082 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 68 flow. Second operand 3 states and 70 transitions. [2023-11-29 00:09:19,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 39 transitions, 140 flow [2023-11-29 00:09:19,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 39 transitions, 138 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:09:19,086 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 64 flow [2023-11-29 00:09:19,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2023-11-29 00:09:19,091 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2023-11-29 00:09:19,091 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 64 flow [2023-11-29 00:09:19,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:19,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:09:19,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:09:19,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:09:19,092 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 00:09:19,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:09:19,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1996445702, now seen corresponding path program 1 times [2023-11-29 00:09:19,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:09:19,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044187152] [2023-11-29 00:09:19,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:09:19,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:09:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:09:19,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:09:19,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:09:19,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044187152] [2023-11-29 00:09:19,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044187152] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:09:19,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:09:19,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:09:19,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648201743] [2023-11-29 00:09:19,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:09:19,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:09:19,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:09:19,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:09:19,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:09:19,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2023-11-29 00:09:19,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:19,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:09:19,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2023-11-29 00:09:19,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:09:19,753 INFO L124 PetriNetUnfolderBase]: 426/800 cut-off events. [2023-11-29 00:09:19,753 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-11-29 00:09:19,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1578 conditions, 800 events. 426/800 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4202 event pairs, 96 based on Foata normal form. 0/774 useless extension candidates. Maximal degree in co-relation 1568. Up to 358 conditions per place. [2023-11-29 00:09:19,760 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 24 selfloop transitions, 2 changer transitions 39/73 dead transitions. [2023-11-29 00:09:19,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 73 transitions, 288 flow [2023-11-29 00:09:19,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:09:19,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 00:09:19,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2023-11-29 00:09:19,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5568181818181818 [2023-11-29 00:09:19,763 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 147 transitions. [2023-11-29 00:09:19,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 147 transitions. [2023-11-29 00:09:19,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:09:19,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 147 transitions. [2023-11-29 00:09:19,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:19,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:19,768 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:19,768 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 64 flow. Second operand 8 states and 147 transitions. [2023-11-29 00:09:19,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 73 transitions, 288 flow [2023-11-29 00:09:19,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 73 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:09:19,771 INFO L231 Difference]: Finished difference. Result has 45 places, 27 transitions, 74 flow [2023-11-29 00:09:19,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=74, PETRI_PLACES=45, PETRI_TRANSITIONS=27} [2023-11-29 00:09:19,773 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 8 predicate places. [2023-11-29 00:09:19,773 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 27 transitions, 74 flow [2023-11-29 00:09:19,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:19,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:09:19,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:09:19,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:09:19,774 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 00:09:19,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:09:19,775 INFO L85 PathProgramCache]: Analyzing trace with hash -521948387, now seen corresponding path program 1 times [2023-11-29 00:09:19,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:09:19,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071571694] [2023-11-29 00:09:19,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:09:19,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:09:19,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:09:19,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:09:19,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:09:19,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071571694] [2023-11-29 00:09:19,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071571694] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:09:19,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:09:19,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:09:19,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392368373] [2023-11-29 00:09:19,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:09:19,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:09:19,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:09:19,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:09:19,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:09:19,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2023-11-29 00:09:19,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 27 transitions, 74 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:19,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:09:19,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2023-11-29 00:09:19,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:09:20,242 INFO L124 PetriNetUnfolderBase]: 245/496 cut-off events. [2023-11-29 00:09:20,242 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2023-11-29 00:09:20,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1061 conditions, 496 events. 245/496 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2487 event pairs, 69 based on Foata normal form. 20/511 useless extension candidates. Maximal degree in co-relation 1046. Up to 253 conditions per place. [2023-11-29 00:09:20,246 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 25 selfloop transitions, 2 changer transitions 23/59 dead transitions. [2023-11-29 00:09:20,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 59 transitions, 250 flow [2023-11-29 00:09:20,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:09:20,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:09:20,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2023-11-29 00:09:20,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5584415584415584 [2023-11-29 00:09:20,248 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 129 transitions. [2023-11-29 00:09:20,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 129 transitions. [2023-11-29 00:09:20,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:09:20,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 129 transitions. [2023-11-29 00:09:20,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:20,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:20,252 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:20,252 INFO L175 Difference]: Start difference. First operand has 45 places, 27 transitions, 74 flow. Second operand 7 states and 129 transitions. [2023-11-29 00:09:20,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 59 transitions, 250 flow [2023-11-29 00:09:20,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 59 transitions, 230 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-29 00:09:20,257 INFO L231 Difference]: Finished difference. Result has 44 places, 27 transitions, 78 flow [2023-11-29 00:09:20,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=78, PETRI_PLACES=44, PETRI_TRANSITIONS=27} [2023-11-29 00:09:20,258 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2023-11-29 00:09:20,258 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 27 transitions, 78 flow [2023-11-29 00:09:20,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:20,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:09:20,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:09:20,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 00:09:20,259 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 00:09:20,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:09:20,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1822590633, now seen corresponding path program 1 times [2023-11-29 00:09:20,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:09:20,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17608075] [2023-11-29 00:09:20,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:09:20,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:09:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:09:20,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:09:20,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:09:20,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17608075] [2023-11-29 00:09:20,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17608075] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:09:20,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:09:20,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:09:20,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089429848] [2023-11-29 00:09:20,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:09:20,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:09:20,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:09:20,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:09:20,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:09:20,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2023-11-29 00:09:20,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 27 transitions, 78 flow. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:20,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:09:20,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2023-11-29 00:09:20,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:09:21,343 INFO L124 PetriNetUnfolderBase]: 309/646 cut-off events. [2023-11-29 00:09:21,343 INFO L125 PetriNetUnfolderBase]: For 157/158 co-relation queries the response was YES. [2023-11-29 00:09:21,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1396 conditions, 646 events. 309/646 cut-off events. For 157/158 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3216 event pairs, 37 based on Foata normal form. 15/656 useless extension candidates. Maximal degree in co-relation 1380. Up to 329 conditions per place. [2023-11-29 00:09:21,348 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 33 selfloop transitions, 10 changer transitions 21/72 dead transitions. [2023-11-29 00:09:21,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 72 transitions, 316 flow [2023-11-29 00:09:21,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:09:21,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 00:09:21,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2023-11-29 00:09:21,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503030303030303 [2023-11-29 00:09:21,351 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 166 transitions. [2023-11-29 00:09:21,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 166 transitions. [2023-11-29 00:09:21,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:09:21,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 166 transitions. [2023-11-29 00:09:21,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:21,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 33.0) internal successors, (363), 11 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:21,354 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 33.0) internal successors, (363), 11 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:21,354 INFO L175 Difference]: Start difference. First operand has 44 places, 27 transitions, 78 flow. Second operand 10 states and 166 transitions. [2023-11-29 00:09:21,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 72 transitions, 316 flow [2023-11-29 00:09:21,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 72 transitions, 292 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-29 00:09:21,359 INFO L231 Difference]: Finished difference. Result has 49 places, 35 transitions, 152 flow [2023-11-29 00:09:21,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=152, PETRI_PLACES=49, PETRI_TRANSITIONS=35} [2023-11-29 00:09:21,360 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 12 predicate places. [2023-11-29 00:09:21,360 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 35 transitions, 152 flow [2023-11-29 00:09:21,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:21,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:09:21,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:09:21,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 00:09:21,361 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 00:09:21,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:09:21,362 INFO L85 PathProgramCache]: Analyzing trace with hash -979740345, now seen corresponding path program 2 times [2023-11-29 00:09:21,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:09:21,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527376763] [2023-11-29 00:09:21,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:09:21,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:09:21,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:09:22,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:09:22,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:09:22,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527376763] [2023-11-29 00:09:22,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527376763] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:09:22,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:09:22,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:09:22,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992748049] [2023-11-29 00:09:22,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:09:22,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:09:22,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:09:22,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:09:22,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:09:22,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2023-11-29 00:09:22,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 35 transitions, 152 flow. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:22,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:09:22,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2023-11-29 00:09:22,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:09:22,403 INFO L124 PetriNetUnfolderBase]: 301/625 cut-off events. [2023-11-29 00:09:22,403 INFO L125 PetriNetUnfolderBase]: For 659/675 co-relation queries the response was YES. [2023-11-29 00:09:22,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1916 conditions, 625 events. 301/625 cut-off events. For 659/675 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3163 event pairs, 53 based on Foata normal form. 12/629 useless extension candidates. Maximal degree in co-relation 1898. Up to 408 conditions per place. [2023-11-29 00:09:22,410 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 36 selfloop transitions, 14 changer transitions 12/70 dead transitions. [2023-11-29 00:09:22,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 70 transitions, 436 flow [2023-11-29 00:09:22,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:09:22,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:09:22,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2023-11-29 00:09:22,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5367965367965368 [2023-11-29 00:09:22,412 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 124 transitions. [2023-11-29 00:09:22,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 124 transitions. [2023-11-29 00:09:22,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:09:22,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 124 transitions. [2023-11-29 00:09:22,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:22,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:22,415 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:22,415 INFO L175 Difference]: Start difference. First operand has 49 places, 35 transitions, 152 flow. Second operand 7 states and 124 transitions. [2023-11-29 00:09:22,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 70 transitions, 436 flow [2023-11-29 00:09:22,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 70 transitions, 429 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-29 00:09:22,420 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 263 flow [2023-11-29 00:09:22,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=263, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2023-11-29 00:09:22,421 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 15 predicate places. [2023-11-29 00:09:22,421 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 263 flow [2023-11-29 00:09:22,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:22,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:09:22,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:09:22,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 00:09:22,422 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 00:09:22,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:09:22,423 INFO L85 PathProgramCache]: Analyzing trace with hash 2018103687, now seen corresponding path program 3 times [2023-11-29 00:09:22,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:09:22,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602834820] [2023-11-29 00:09:22,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:09:22,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:09:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:09:23,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:09:23,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:09:23,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602834820] [2023-11-29 00:09:23,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602834820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:09:23,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:09:23,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 00:09:23,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462089711] [2023-11-29 00:09:23,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:09:23,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:09:23,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:09:23,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:09:23,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:09:23,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2023-11-29 00:09:23,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 263 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:23,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:09:23,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2023-11-29 00:09:23,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:09:23,802 INFO L124 PetriNetUnfolderBase]: 317/656 cut-off events. [2023-11-29 00:09:23,802 INFO L125 PetriNetUnfolderBase]: For 1371/1456 co-relation queries the response was YES. [2023-11-29 00:09:23,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2338 conditions, 656 events. 317/656 cut-off events. For 1371/1456 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3406 event pairs, 32 based on Foata normal form. 30/680 useless extension candidates. Maximal degree in co-relation 2317. Up to 400 conditions per place. [2023-11-29 00:09:23,810 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 46 selfloop transitions, 19 changer transitions 12/85 dead transitions. [2023-11-29 00:09:23,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 85 transitions, 636 flow [2023-11-29 00:09:23,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:09:23,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 00:09:23,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2023-11-29 00:09:23,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2023-11-29 00:09:23,812 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 141 transitions. [2023-11-29 00:09:23,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 141 transitions. [2023-11-29 00:09:23,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:09:23,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 141 transitions. [2023-11-29 00:09:23,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:23,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:23,814 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:23,814 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 263 flow. Second operand 8 states and 141 transitions. [2023-11-29 00:09:23,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 85 transitions, 636 flow [2023-11-29 00:09:23,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 85 transitions, 605 flow, removed 11 selfloop flow, removed 3 redundant places. [2023-11-29 00:09:23,821 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 374 flow [2023-11-29 00:09:23,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=374, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2023-11-29 00:09:23,823 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 21 predicate places. [2023-11-29 00:09:23,823 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 374 flow [2023-11-29 00:09:23,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:23,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:09:23,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:09:23,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 00:09:23,824 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 00:09:23,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:09:23,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1084924503, now seen corresponding path program 4 times [2023-11-29 00:09:23,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:09:23,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027917608] [2023-11-29 00:09:23,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:09:23,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:09:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:09:24,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:09:24,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:09:24,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027917608] [2023-11-29 00:09:24,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027917608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:09:24,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:09:24,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:09:24,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090937145] [2023-11-29 00:09:24,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:09:24,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:09:24,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:09:24,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:09:24,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:09:24,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2023-11-29 00:09:24,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 374 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:24,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:09:24,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2023-11-29 00:09:24,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:09:24,901 INFO L124 PetriNetUnfolderBase]: 316/665 cut-off events. [2023-11-29 00:09:24,901 INFO L125 PetriNetUnfolderBase]: For 2008/2136 co-relation queries the response was YES. [2023-11-29 00:09:24,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2538 conditions, 665 events. 316/665 cut-off events. For 2008/2136 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3484 event pairs, 39 based on Foata normal form. 44/704 useless extension candidates. Maximal degree in co-relation 2514. Up to 405 conditions per place. [2023-11-29 00:09:24,908 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 47 selfloop transitions, 23 changer transitions 19/97 dead transitions. [2023-11-29 00:09:24,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 97 transitions, 834 flow [2023-11-29 00:09:24,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:09:24,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 00:09:24,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2023-11-29 00:09:24,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.509641873278237 [2023-11-29 00:09:24,911 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 185 transitions. [2023-11-29 00:09:24,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 185 transitions. [2023-11-29 00:09:24,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:09:24,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 185 transitions. [2023-11-29 00:09:24,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:24,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 33.0) internal successors, (396), 12 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:24,914 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 33.0) internal successors, (396), 12 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:24,914 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 374 flow. Second operand 11 states and 185 transitions. [2023-11-29 00:09:24,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 97 transitions, 834 flow [2023-11-29 00:09:24,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 97 transitions, 793 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-11-29 00:09:24,920 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 467 flow [2023-11-29 00:09:24,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=467, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2023-11-29 00:09:24,921 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 29 predicate places. [2023-11-29 00:09:24,922 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 467 flow [2023-11-29 00:09:24,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:24,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:09:24,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:09:24,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 00:09:24,923 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 00:09:24,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:09:24,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1839919779, now seen corresponding path program 1 times [2023-11-29 00:09:24,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:09:24,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908268055] [2023-11-29 00:09:24,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:09:24,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:09:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:09:25,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:09:25,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:09:25,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908268055] [2023-11-29 00:09:25,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908268055] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:09:25,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:09:25,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 00:09:25,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958932689] [2023-11-29 00:09:25,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:09:25,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 00:09:25,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:09:25,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 00:09:25,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:09:25,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2023-11-29 00:09:25,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 467 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:25,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:09:25,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2023-11-29 00:09:25,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:09:26,541 INFO L124 PetriNetUnfolderBase]: 391/806 cut-off events. [2023-11-29 00:09:26,541 INFO L125 PetriNetUnfolderBase]: For 3453/3568 co-relation queries the response was YES. [2023-11-29 00:09:26,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3320 conditions, 806 events. 391/806 cut-off events. For 3453/3568 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4445 event pairs, 52 based on Foata normal form. 50/856 useless extension candidates. Maximal degree in co-relation 3293. Up to 276 conditions per place. [2023-11-29 00:09:26,549 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 58 selfloop transitions, 25 changer transitions 31/122 dead transitions. [2023-11-29 00:09:26,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 122 transitions, 1135 flow [2023-11-29 00:09:26,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:09:26,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 00:09:26,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 219 transitions. [2023-11-29 00:09:26,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104895104895105 [2023-11-29 00:09:26,551 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 219 transitions. [2023-11-29 00:09:26,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 219 transitions. [2023-11-29 00:09:26,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:09:26,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 219 transitions. [2023-11-29 00:09:26,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 16.846153846153847) internal successors, (219), 13 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:26,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 33.0) internal successors, (462), 14 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:26,554 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 33.0) internal successors, (462), 14 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:26,554 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 467 flow. Second operand 13 states and 219 transitions. [2023-11-29 00:09:26,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 122 transitions, 1135 flow [2023-11-29 00:09:26,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 122 transitions, 1023 flow, removed 33 selfloop flow, removed 10 redundant places. [2023-11-29 00:09:26,567 INFO L231 Difference]: Finished difference. Result has 71 places, 63 transitions, 553 flow [2023-11-29 00:09:26,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=553, PETRI_PLACES=71, PETRI_TRANSITIONS=63} [2023-11-29 00:09:26,569 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 34 predicate places. [2023-11-29 00:09:26,569 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 63 transitions, 553 flow [2023-11-29 00:09:26,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:26,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:09:26,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:09:26,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 00:09:26,570 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 00:09:26,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:09:26,570 INFO L85 PathProgramCache]: Analyzing trace with hash -216513783, now seen corresponding path program 1 times [2023-11-29 00:09:26,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:09:26,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467464293] [2023-11-29 00:09:26,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:09:26,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:09:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:09:27,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:09:27,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:09:27,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467464293] [2023-11-29 00:09:27,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467464293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:09:27,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:09:27,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:09:27,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177624156] [2023-11-29 00:09:27,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:09:27,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:09:27,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:09:27,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:09:27,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:09:27,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2023-11-29 00:09:27,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 63 transitions, 553 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:27,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:09:27,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2023-11-29 00:09:27,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:09:28,103 INFO L124 PetriNetUnfolderBase]: 301/627 cut-off events. [2023-11-29 00:09:28,104 INFO L125 PetriNetUnfolderBase]: For 3301/3408 co-relation queries the response was YES. [2023-11-29 00:09:28,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2926 conditions, 627 events. 301/627 cut-off events. For 3301/3408 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3223 event pairs, 34 based on Foata normal form. 19/641 useless extension candidates. Maximal degree in co-relation 2897. Up to 440 conditions per place. [2023-11-29 00:09:28,111 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 59 selfloop transitions, 15 changer transitions 15/97 dead transitions. [2023-11-29 00:09:28,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 97 transitions, 948 flow [2023-11-29 00:09:28,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:09:28,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 00:09:28,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2023-11-29 00:09:28,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4909090909090909 [2023-11-29 00:09:28,113 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 162 transitions. [2023-11-29 00:09:28,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 162 transitions. [2023-11-29 00:09:28,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:09:28,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 162 transitions. [2023-11-29 00:09:28,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 16.2) internal successors, (162), 10 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:28,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 33.0) internal successors, (363), 11 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:28,115 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 33.0) internal successors, (363), 11 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:28,115 INFO L175 Difference]: Start difference. First operand has 71 places, 63 transitions, 553 flow. Second operand 10 states and 162 transitions. [2023-11-29 00:09:28,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 97 transitions, 948 flow [2023-11-29 00:09:28,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 97 transitions, 860 flow, removed 38 selfloop flow, removed 7 redundant places. [2023-11-29 00:09:28,126 INFO L231 Difference]: Finished difference. Result has 74 places, 66 transitions, 571 flow [2023-11-29 00:09:28,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=571, PETRI_PLACES=74, PETRI_TRANSITIONS=66} [2023-11-29 00:09:28,127 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 37 predicate places. [2023-11-29 00:09:28,127 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 66 transitions, 571 flow [2023-11-29 00:09:28,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:28,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:09:28,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:09:28,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 00:09:28,128 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 00:09:28,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:09:28,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1591714687, now seen corresponding path program 2 times [2023-11-29 00:09:28,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:09:28,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903113824] [2023-11-29 00:09:28,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:09:28,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:09:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:09:29,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:09:29,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:09:29,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903113824] [2023-11-29 00:09:29,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903113824] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:09:29,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:09:29,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:09:29,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605258341] [2023-11-29 00:09:29,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:09:29,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:09:29,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:09:29,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:09:29,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:09:29,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2023-11-29 00:09:29,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 66 transitions, 571 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:29,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:09:29,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2023-11-29 00:09:29,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:09:30,149 INFO L124 PetriNetUnfolderBase]: 465/869 cut-off events. [2023-11-29 00:09:30,150 INFO L125 PetriNetUnfolderBase]: For 4999/5085 co-relation queries the response was YES. [2023-11-29 00:09:30,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3982 conditions, 869 events. 465/869 cut-off events. For 4999/5085 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4193 event pairs, 65 based on Foata normal form. 61/930 useless extension candidates. Maximal degree in co-relation 3951. Up to 637 conditions per place. [2023-11-29 00:09:30,158 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 55 selfloop transitions, 26 changer transitions 25/112 dead transitions. [2023-11-29 00:09:30,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 112 transitions, 1088 flow [2023-11-29 00:09:30,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:09:30,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 00:09:30,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 166 transitions. [2023-11-29 00:09:30,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573002754820937 [2023-11-29 00:09:30,160 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 166 transitions. [2023-11-29 00:09:30,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 166 transitions. [2023-11-29 00:09:30,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:09:30,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 166 transitions. [2023-11-29 00:09:30,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 15.090909090909092) internal successors, (166), 11 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:30,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 33.0) internal successors, (396), 12 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:30,162 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 33.0) internal successors, (396), 12 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:30,162 INFO L175 Difference]: Start difference. First operand has 74 places, 66 transitions, 571 flow. Second operand 11 states and 166 transitions. [2023-11-29 00:09:30,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 112 transitions, 1088 flow [2023-11-29 00:09:30,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 112 transitions, 982 flow, removed 40 selfloop flow, removed 7 redundant places. [2023-11-29 00:09:30,177 INFO L231 Difference]: Finished difference. Result has 79 places, 72 transitions, 684 flow [2023-11-29 00:09:30,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=684, PETRI_PLACES=79, PETRI_TRANSITIONS=72} [2023-11-29 00:09:30,178 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 42 predicate places. [2023-11-29 00:09:30,178 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 72 transitions, 684 flow [2023-11-29 00:09:30,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:30,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:09:30,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:09:30,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 00:09:30,179 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 00:09:30,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:09:30,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1137217557, now seen corresponding path program 3 times [2023-11-29 00:09:30,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:09:30,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518346109] [2023-11-29 00:09:30,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:09:30,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:09:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:09:31,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:09:31,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:09:31,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518346109] [2023-11-29 00:09:31,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518346109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:09:31,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:09:31,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:09:31,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416657704] [2023-11-29 00:09:31,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:09:31,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:09:31,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:09:31,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:09:31,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:09:31,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2023-11-29 00:09:31,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 72 transitions, 684 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 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) [2023-11-29 00:09:31,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:09:31,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2023-11-29 00:09:31,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:09:31,601 INFO L124 PetriNetUnfolderBase]: 294/621 cut-off events. [2023-11-29 00:09:31,601 INFO L125 PetriNetUnfolderBase]: For 3011/3150 co-relation queries the response was YES. [2023-11-29 00:09:31,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2815 conditions, 621 events. 294/621 cut-off events. For 3011/3150 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3241 event pairs, 39 based on Foata normal form. 37/657 useless extension candidates. Maximal degree in co-relation 2782. Up to 371 conditions per place. [2023-11-29 00:09:31,608 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 64 selfloop transitions, 19 changer transitions 14/105 dead transitions. [2023-11-29 00:09:31,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 105 transitions, 1091 flow [2023-11-29 00:09:31,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:09:31,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 00:09:31,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2023-11-29 00:09:31,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48787878787878786 [2023-11-29 00:09:31,610 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 161 transitions. [2023-11-29 00:09:31,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 161 transitions. [2023-11-29 00:09:31,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:09:31,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 161 transitions. [2023-11-29 00:09:31,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 16.1) internal successors, (161), 10 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:31,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 33.0) internal successors, (363), 11 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:31,612 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 33.0) internal successors, (363), 11 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:31,612 INFO L175 Difference]: Start difference. First operand has 79 places, 72 transitions, 684 flow. Second operand 10 states and 161 transitions. [2023-11-29 00:09:31,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 105 transitions, 1091 flow [2023-11-29 00:09:31,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 105 transitions, 1008 flow, removed 22 selfloop flow, removed 8 redundant places. [2023-11-29 00:09:31,628 INFO L231 Difference]: Finished difference. Result has 80 places, 72 transitions, 682 flow [2023-11-29 00:09:31,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=682, PETRI_PLACES=80, PETRI_TRANSITIONS=72} [2023-11-29 00:09:31,629 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 43 predicate places. [2023-11-29 00:09:31,629 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 72 transitions, 682 flow [2023-11-29 00:09:31,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 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) [2023-11-29 00:09:31,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:09:31,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:09:31,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 00:09:31,630 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 00:09:31,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:09:31,631 INFO L85 PathProgramCache]: Analyzing trace with hash 2011480899, now seen corresponding path program 2 times [2023-11-29 00:09:31,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:09:31,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002968364] [2023-11-29 00:09:31,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:09:31,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:09:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:09:32,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:09:32,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:09:32,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002968364] [2023-11-29 00:09:32,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002968364] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:09:32,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:09:32,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:09:32,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14971201] [2023-11-29 00:09:32,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:09:32,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:09:32,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:09:32,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:09:32,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:09:32,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2023-11-29 00:09:32,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 72 transitions, 682 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:32,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:09:32,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2023-11-29 00:09:32,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:09:32,844 INFO L124 PetriNetUnfolderBase]: 417/871 cut-off events. [2023-11-29 00:09:32,844 INFO L125 PetriNetUnfolderBase]: For 4611/4756 co-relation queries the response was YES. [2023-11-29 00:09:32,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3982 conditions, 871 events. 417/871 cut-off events. For 4611/4756 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4953 event pairs, 65 based on Foata normal form. 56/926 useless extension candidates. Maximal degree in co-relation 3948. Up to 352 conditions per place. [2023-11-29 00:09:32,851 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 68 selfloop transitions, 39 changer transitions 24/139 dead transitions. [2023-11-29 00:09:32,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 139 transitions, 1505 flow [2023-11-29 00:09:32,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:09:32,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 00:09:32,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 202 transitions. [2023-11-29 00:09:32,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51010101010101 [2023-11-29 00:09:32,853 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 202 transitions. [2023-11-29 00:09:32,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 202 transitions. [2023-11-29 00:09:32,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:09:32,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 202 transitions. [2023-11-29 00:09:32,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 16.833333333333332) internal successors, (202), 12 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:32,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 33.0) internal successors, (429), 13 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:32,855 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 33.0) internal successors, (429), 13 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:32,855 INFO L175 Difference]: Start difference. First operand has 80 places, 72 transitions, 682 flow. Second operand 12 states and 202 transitions. [2023-11-29 00:09:32,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 139 transitions, 1505 flow [2023-11-29 00:09:32,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 139 transitions, 1445 flow, removed 18 selfloop flow, removed 7 redundant places. [2023-11-29 00:09:32,866 INFO L231 Difference]: Finished difference. Result has 87 places, 86 transitions, 961 flow [2023-11-29 00:09:32,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=961, PETRI_PLACES=87, PETRI_TRANSITIONS=86} [2023-11-29 00:09:32,867 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 50 predicate places. [2023-11-29 00:09:32,867 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 86 transitions, 961 flow [2023-11-29 00:09:32,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:32,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:09:32,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:09:32,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 00:09:32,869 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 00:09:32,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:09:32,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1972285081, now seen corresponding path program 3 times [2023-11-29 00:09:32,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:09:32,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296301296] [2023-11-29 00:09:32,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:09:32,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:09:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:09:33,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:09:33,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:09:33,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296301296] [2023-11-29 00:09:33,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296301296] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:09:33,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:09:33,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:09:33,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431376541] [2023-11-29 00:09:33,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:09:33,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:09:33,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:09:33,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:09:33,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:09:33,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2023-11-29 00:09:33,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 86 transitions, 961 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 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) [2023-11-29 00:09:33,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:09:33,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2023-11-29 00:09:33,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:09:33,718 INFO L124 PetriNetUnfolderBase]: 364/765 cut-off events. [2023-11-29 00:09:33,718 INFO L125 PetriNetUnfolderBase]: For 5412/5591 co-relation queries the response was YES. [2023-11-29 00:09:33,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3895 conditions, 765 events. 364/765 cut-off events. For 5412/5591 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4189 event pairs, 52 based on Foata normal form. 96/859 useless extension candidates. Maximal degree in co-relation 3858. Up to 440 conditions per place. [2023-11-29 00:09:33,725 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 57 selfloop transitions, 35 changer transitions 18/118 dead transitions. [2023-11-29 00:09:33,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 118 transitions, 1510 flow [2023-11-29 00:09:33,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:09:33,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:09:33,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2023-11-29 00:09:33,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49158249158249157 [2023-11-29 00:09:33,727 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 146 transitions. [2023-11-29 00:09:33,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 146 transitions. [2023-11-29 00:09:33,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:09:33,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 146 transitions. [2023-11-29 00:09:33,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 16.22222222222222) internal successors, (146), 9 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:33,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:33,729 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:33,729 INFO L175 Difference]: Start difference. First operand has 87 places, 86 transitions, 961 flow. Second operand 9 states and 146 transitions. [2023-11-29 00:09:33,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 118 transitions, 1510 flow [2023-11-29 00:09:33,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 118 transitions, 1439 flow, removed 31 selfloop flow, removed 7 redundant places. [2023-11-29 00:09:33,744 INFO L231 Difference]: Finished difference. Result has 89 places, 89 transitions, 1100 flow [2023-11-29 00:09:33,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1100, PETRI_PLACES=89, PETRI_TRANSITIONS=89} [2023-11-29 00:09:33,744 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 52 predicate places. [2023-11-29 00:09:33,745 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 89 transitions, 1100 flow [2023-11-29 00:09:33,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 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) [2023-11-29 00:09:33,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:09:33,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:09:33,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 00:09:33,746 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 00:09:33,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:09:33,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1506708398, now seen corresponding path program 1 times [2023-11-29 00:09:33,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:09:33,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743464313] [2023-11-29 00:09:33,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:09:33,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:09:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:09:34,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:09:34,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:09:34,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743464313] [2023-11-29 00:09:34,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743464313] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:09:34,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:09:34,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:09:34,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005658570] [2023-11-29 00:09:34,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:09:34,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:09:34,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:09:34,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:09:34,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:09:34,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2023-11-29 00:09:34,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 89 transitions, 1100 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:34,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:09:34,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2023-11-29 00:09:34,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:09:35,105 INFO L124 PetriNetUnfolderBase]: 403/843 cut-off events. [2023-11-29 00:09:35,105 INFO L125 PetriNetUnfolderBase]: For 7018/7184 co-relation queries the response was YES. [2023-11-29 00:09:35,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4742 conditions, 843 events. 403/843 cut-off events. For 7018/7184 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4826 event pairs, 63 based on Foata normal form. 95/938 useless extension candidates. Maximal degree in co-relation 4704. Up to 514 conditions per place. [2023-11-29 00:09:35,113 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 88 selfloop transitions, 47 changer transitions 16/159 dead transitions. [2023-11-29 00:09:35,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 159 transitions, 2088 flow [2023-11-29 00:09:35,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 00:09:35,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 00:09:35,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 231 transitions. [2023-11-29 00:09:35,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-11-29 00:09:35,115 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 231 transitions. [2023-11-29 00:09:35,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 231 transitions. [2023-11-29 00:09:35,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:09:35,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 231 transitions. [2023-11-29 00:09:35,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 16.5) internal successors, (231), 14 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:35,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 33.0) internal successors, (495), 15 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:35,117 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 33.0) internal successors, (495), 15 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:35,118 INFO L175 Difference]: Start difference. First operand has 89 places, 89 transitions, 1100 flow. Second operand 14 states and 231 transitions. [2023-11-29 00:09:35,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 159 transitions, 2088 flow [2023-11-29 00:09:35,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 159 transitions, 2007 flow, removed 36 selfloop flow, removed 6 redundant places. [2023-11-29 00:09:35,144 INFO L231 Difference]: Finished difference. Result has 100 places, 113 transitions, 1570 flow [2023-11-29 00:09:35,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1067, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1570, PETRI_PLACES=100, PETRI_TRANSITIONS=113} [2023-11-29 00:09:35,145 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 63 predicate places. [2023-11-29 00:09:35,145 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 113 transitions, 1570 flow [2023-11-29 00:09:35,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:35,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:09:35,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:09:35,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 00:09:35,146 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 00:09:35,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:09:35,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1159358811, now seen corresponding path program 1 times [2023-11-29 00:09:35,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:09:35,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471745199] [2023-11-29 00:09:35,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:09:35,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:09:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:09:35,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:09:35,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:09:35,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471745199] [2023-11-29 00:09:35,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471745199] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:09:35,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:09:35,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:09:35,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222688588] [2023-11-29 00:09:35,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:09:35,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:09:35,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:09:35,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:09:35,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:09:35,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2023-11-29 00:09:35,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 113 transitions, 1570 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:35,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:09:35,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2023-11-29 00:09:35,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:09:36,650 INFO L124 PetriNetUnfolderBase]: 724/1338 cut-off events. [2023-11-29 00:09:36,650 INFO L125 PetriNetUnfolderBase]: For 11573/11743 co-relation queries the response was YES. [2023-11-29 00:09:36,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7472 conditions, 1338 events. 724/1338 cut-off events. For 11573/11743 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 7203 event pairs, 193 based on Foata normal form. 113/1451 useless extension candidates. Maximal degree in co-relation 7430. Up to 792 conditions per place. [2023-11-29 00:09:36,664 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 88 selfloop transitions, 36 changer transitions 44/174 dead transitions. [2023-11-29 00:09:36,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 174 transitions, 2410 flow [2023-11-29 00:09:36,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 00:09:36,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 00:09:36,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 204 transitions. [2023-11-29 00:09:36,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2023-11-29 00:09:36,666 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 204 transitions. [2023-11-29 00:09:36,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 204 transitions. [2023-11-29 00:09:36,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:09:36,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 204 transitions. [2023-11-29 00:09:36,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 14.571428571428571) internal successors, (204), 14 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:36,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 33.0) internal successors, (495), 15 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:36,669 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 33.0) internal successors, (495), 15 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:36,669 INFO L175 Difference]: Start difference. First operand has 100 places, 113 transitions, 1570 flow. Second operand 14 states and 204 transitions. [2023-11-29 00:09:36,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 174 transitions, 2410 flow [2023-11-29 00:09:36,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 174 transitions, 2353 flow, removed 26 selfloop flow, removed 3 redundant places. [2023-11-29 00:09:36,701 INFO L231 Difference]: Finished difference. Result has 111 places, 109 transitions, 1547 flow [2023-11-29 00:09:36,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1521, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1547, PETRI_PLACES=111, PETRI_TRANSITIONS=109} [2023-11-29 00:09:36,702 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 74 predicate places. [2023-11-29 00:09:36,702 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 109 transitions, 1547 flow [2023-11-29 00:09:36,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:36,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:09:36,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:09:36,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 00:09:36,703 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 00:09:36,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:09:36,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1553655735, now seen corresponding path program 2 times [2023-11-29 00:09:36,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:09:36,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459649767] [2023-11-29 00:09:36,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:09:36,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:09:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:09:37,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:09:37,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:09:37,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459649767] [2023-11-29 00:09:37,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459649767] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:09:37,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:09:37,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:09:37,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377195382] [2023-11-29 00:09:37,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:09:37,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:09:37,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:09:37,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:09:37,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:09:37,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2023-11-29 00:09:37,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 109 transitions, 1547 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 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) [2023-11-29 00:09:37,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:09:37,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2023-11-29 00:09:37,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:09:37,752 INFO L124 PetriNetUnfolderBase]: 397/858 cut-off events. [2023-11-29 00:09:37,752 INFO L125 PetriNetUnfolderBase]: For 7888/8052 co-relation queries the response was YES. [2023-11-29 00:09:37,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4912 conditions, 858 events. 397/858 cut-off events. For 7888/8052 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5020 event pairs, 74 based on Foata normal form. 52/909 useless extension candidates. Maximal degree in co-relation 4867. Up to 466 conditions per place. [2023-11-29 00:09:37,761 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 77 selfloop transitions, 40 changer transitions 27/152 dead transitions. [2023-11-29 00:09:37,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 152 transitions, 2245 flow [2023-11-29 00:09:37,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:09:37,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:09:37,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2023-11-29 00:09:37,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2023-11-29 00:09:37,762 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 153 transitions. [2023-11-29 00:09:37,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 153 transitions. [2023-11-29 00:09:37,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:09:37,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 153 transitions. [2023-11-29 00:09:37,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 17.0) internal successors, (153), 9 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:37,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:37,765 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:37,765 INFO L175 Difference]: Start difference. First operand has 111 places, 109 transitions, 1547 flow. Second operand 9 states and 153 transitions. [2023-11-29 00:09:37,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 152 transitions, 2245 flow [2023-11-29 00:09:37,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 152 transitions, 2171 flow, removed 8 selfloop flow, removed 12 redundant places. [2023-11-29 00:09:37,788 INFO L231 Difference]: Finished difference. Result has 108 places, 112 transitions, 1646 flow [2023-11-29 00:09:37,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1477, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1646, PETRI_PLACES=108, PETRI_TRANSITIONS=112} [2023-11-29 00:09:37,789 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 71 predicate places. [2023-11-29 00:09:37,789 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 112 transitions, 1646 flow [2023-11-29 00:09:37,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 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) [2023-11-29 00:09:37,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:09:37,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:09:37,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 00:09:37,790 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 00:09:37,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:09:37,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1094039424, now seen corresponding path program 2 times [2023-11-29 00:09:37,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:09:37,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825674284] [2023-11-29 00:09:37,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:09:37,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:09:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:09:38,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:09:38,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:09:38,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825674284] [2023-11-29 00:09:38,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825674284] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:09:38,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:09:38,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 00:09:38,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514499925] [2023-11-29 00:09:38,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:09:38,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 00:09:38,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:09:38,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 00:09:38,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:09:38,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2023-11-29 00:09:38,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 112 transitions, 1646 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:38,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:09:38,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2023-11-29 00:09:38,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:09:38,879 INFO L124 PetriNetUnfolderBase]: 412/909 cut-off events. [2023-11-29 00:09:38,879 INFO L125 PetriNetUnfolderBase]: For 9971/10117 co-relation queries the response was YES. [2023-11-29 00:09:38,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5445 conditions, 909 events. 412/909 cut-off events. For 9971/10117 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5587 event pairs, 57 based on Foata normal form. 55/964 useless extension candidates. Maximal degree in co-relation 5400. Up to 530 conditions per place. [2023-11-29 00:09:38,888 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 103 selfloop transitions, 46 changer transitions 23/180 dead transitions. [2023-11-29 00:09:38,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 180 transitions, 2745 flow [2023-11-29 00:09:38,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:09:38,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 00:09:38,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 206 transitions. [2023-11-29 00:09:38,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5202020202020202 [2023-11-29 00:09:38,889 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 206 transitions. [2023-11-29 00:09:38,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 206 transitions. [2023-11-29 00:09:38,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:09:38,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 206 transitions. [2023-11-29 00:09:38,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 17.166666666666668) internal successors, (206), 12 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:38,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 33.0) internal successors, (429), 13 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:38,891 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 33.0) internal successors, (429), 13 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:38,891 INFO L175 Difference]: Start difference. First operand has 108 places, 112 transitions, 1646 flow. Second operand 12 states and 206 transitions. [2023-11-29 00:09:38,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 180 transitions, 2745 flow [2023-11-29 00:09:38,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 180 transitions, 2613 flow, removed 34 selfloop flow, removed 7 redundant places. [2023-11-29 00:09:38,915 INFO L231 Difference]: Finished difference. Result has 118 places, 131 transitions, 2044 flow [2023-11-29 00:09:38,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1555, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2044, PETRI_PLACES=118, PETRI_TRANSITIONS=131} [2023-11-29 00:09:38,915 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 81 predicate places. [2023-11-29 00:09:38,915 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 131 transitions, 2044 flow [2023-11-29 00:09:38,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:38,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:09:38,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:09:38,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 00:09:38,916 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 00:09:38,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:09:38,916 INFO L85 PathProgramCache]: Analyzing trace with hash -358325705, now seen corresponding path program 3 times [2023-11-29 00:09:38,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:09:38,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907155101] [2023-11-29 00:09:38,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:09:38,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:09:38,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:09:39,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:09:39,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:09:39,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907155101] [2023-11-29 00:09:39,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907155101] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:09:39,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:09:39,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 00:09:39,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756490130] [2023-11-29 00:09:39,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:09:39,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 00:09:39,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:09:39,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 00:09:39,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:09:39,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2023-11-29 00:09:39,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 131 transitions, 2044 flow. Second operand has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:39,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:09:39,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2023-11-29 00:09:39,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:09:40,462 INFO L124 PetriNetUnfolderBase]: 696/1330 cut-off events. [2023-11-29 00:09:40,462 INFO L125 PetriNetUnfolderBase]: For 15953/16078 co-relation queries the response was YES. [2023-11-29 00:09:40,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7879 conditions, 1330 events. 696/1330 cut-off events. For 15953/16078 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7320 event pairs, 134 based on Foata normal form. 79/1409 useless extension candidates. Maximal degree in co-relation 7829. Up to 777 conditions per place. [2023-11-29 00:09:40,475 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 96 selfloop transitions, 49 changer transitions 60/211 dead transitions. [2023-11-29 00:09:40,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 211 transitions, 3104 flow [2023-11-29 00:09:40,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 00:09:40,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 00:09:40,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 247 transitions. [2023-11-29 00:09:40,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44028520499108736 [2023-11-29 00:09:40,493 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 247 transitions. [2023-11-29 00:09:40,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 247 transitions. [2023-11-29 00:09:40,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:09:40,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 247 transitions. [2023-11-29 00:09:40,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 14.529411764705882) internal successors, (247), 17 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:40,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 33.0) internal successors, (594), 18 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:40,496 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 33.0) internal successors, (594), 18 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:40,496 INFO L175 Difference]: Start difference. First operand has 118 places, 131 transitions, 2044 flow. Second operand 17 states and 247 transitions. [2023-11-29 00:09:40,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 211 transitions, 3104 flow [2023-11-29 00:09:40,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 211 transitions, 3031 flow, removed 34 selfloop flow, removed 3 redundant places. [2023-11-29 00:09:40,552 INFO L231 Difference]: Finished difference. Result has 140 places, 130 transitions, 2155 flow [2023-11-29 00:09:40,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1985, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2155, PETRI_PLACES=140, PETRI_TRANSITIONS=130} [2023-11-29 00:09:40,553 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 103 predicate places. [2023-11-29 00:09:40,553 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 130 transitions, 2155 flow [2023-11-29 00:09:40,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:40,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:09:40,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:09:40,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 00:09:40,554 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 00:09:40,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:09:40,554 INFO L85 PathProgramCache]: Analyzing trace with hash 2027473950, now seen corresponding path program 3 times [2023-11-29 00:09:40,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:09:40,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816503271] [2023-11-29 00:09:40,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:09:40,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:09:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:09:41,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:09:41,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:09:41,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816503271] [2023-11-29 00:09:41,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816503271] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:09:41,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:09:41,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:09:41,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825996344] [2023-11-29 00:09:41,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:09:41,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:09:41,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:09:41,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:09:41,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:09:41,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2023-11-29 00:09:41,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 130 transitions, 2155 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:41,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:09:41,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2023-11-29 00:09:41,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:09:41,966 INFO L124 PetriNetUnfolderBase]: 602/1175 cut-off events. [2023-11-29 00:09:41,966 INFO L125 PetriNetUnfolderBase]: For 18620/18741 co-relation queries the response was YES. [2023-11-29 00:09:41,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7562 conditions, 1175 events. 602/1175 cut-off events. For 18620/18741 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6411 event pairs, 76 based on Foata normal form. 61/1236 useless extension candidates. Maximal degree in co-relation 7501. Up to 382 conditions per place. [2023-11-29 00:09:41,974 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 68 selfloop transitions, 49 changer transitions 63/186 dead transitions. [2023-11-29 00:09:41,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 186 transitions, 2973 flow [2023-11-29 00:09:41,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:09:41,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 00:09:41,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 197 transitions. [2023-11-29 00:09:41,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4592074592074592 [2023-11-29 00:09:41,975 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 197 transitions. [2023-11-29 00:09:41,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 197 transitions. [2023-11-29 00:09:41,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:09:41,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 197 transitions. [2023-11-29 00:09:41,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 15.153846153846153) internal successors, (197), 13 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:41,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 33.0) internal successors, (462), 14 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:41,977 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 33.0) internal successors, (462), 14 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:41,977 INFO L175 Difference]: Start difference. First operand has 140 places, 130 transitions, 2155 flow. Second operand 13 states and 197 transitions. [2023-11-29 00:09:41,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 186 transitions, 2973 flow [2023-11-29 00:09:42,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 186 transitions, 2819 flow, removed 38 selfloop flow, removed 15 redundant places. [2023-11-29 00:09:42,023 INFO L231 Difference]: Finished difference. Result has 133 places, 103 transitions, 1678 flow [2023-11-29 00:09:42,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2026, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1678, PETRI_PLACES=133, PETRI_TRANSITIONS=103} [2023-11-29 00:09:42,024 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 96 predicate places. [2023-11-29 00:09:42,024 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 103 transitions, 1678 flow [2023-11-29 00:09:42,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:42,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:09:42,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:09:42,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 00:09:42,031 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 00:09:42,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:09:42,031 INFO L85 PathProgramCache]: Analyzing trace with hash 598910115, now seen corresponding path program 4 times [2023-11-29 00:09:42,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:09:42,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137306492] [2023-11-29 00:09:42,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:09:42,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:09:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:09:42,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:09:42,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:09:42,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137306492] [2023-11-29 00:09:42,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137306492] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:09:42,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:09:42,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:09:42,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709347483] [2023-11-29 00:09:42,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:09:42,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:09:42,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:09:42,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:09:42,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:09:42,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2023-11-29 00:09:42,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 103 transitions, 1678 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:42,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:09:42,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2023-11-29 00:09:42,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:09:43,217 INFO L124 PetriNetUnfolderBase]: 302/687 cut-off events. [2023-11-29 00:09:43,217 INFO L125 PetriNetUnfolderBase]: For 9854/9930 co-relation queries the response was YES. [2023-11-29 00:09:43,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4332 conditions, 687 events. 302/687 cut-off events. For 9854/9930 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3950 event pairs, 30 based on Foata normal form. 22/709 useless extension candidates. Maximal degree in co-relation 4287. Up to 302 conditions per place. [2023-11-29 00:09:43,220 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 29 selfloop transitions, 10 changer transitions 79/126 dead transitions. [2023-11-29 00:09:43,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 126 transitions, 2085 flow [2023-11-29 00:09:43,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:09:43,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:09:43,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 139 transitions. [2023-11-29 00:09:43,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.468013468013468 [2023-11-29 00:09:43,222 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 139 transitions. [2023-11-29 00:09:43,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 139 transitions. [2023-11-29 00:09:43,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:09:43,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 139 transitions. [2023-11-29 00:09:43,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:43,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:43,223 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:43,224 INFO L175 Difference]: Start difference. First operand has 133 places, 103 transitions, 1678 flow. Second operand 9 states and 139 transitions. [2023-11-29 00:09:43,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 126 transitions, 2085 flow [2023-11-29 00:09:43,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 126 transitions, 1796 flow, removed 55 selfloop flow, removed 19 redundant places. [2023-11-29 00:09:43,250 INFO L231 Difference]: Finished difference. Result has 113 places, 40 transitions, 443 flow [2023-11-29 00:09:43,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1423, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=443, PETRI_PLACES=113, PETRI_TRANSITIONS=40} [2023-11-29 00:09:43,251 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 76 predicate places. [2023-11-29 00:09:43,251 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 40 transitions, 443 flow [2023-11-29 00:09:43,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:43,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:09:43,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:09:43,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 00:09:43,256 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 00:09:43,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:09:43,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1165604046, now seen corresponding path program 4 times [2023-11-29 00:09:43,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:09:43,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227778567] [2023-11-29 00:09:43,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:09:43,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:09:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:09:43,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:09:43,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:09:43,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227778567] [2023-11-29 00:09:43,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227778567] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:09:43,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:09:43,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:09:43,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977513907] [2023-11-29 00:09:43,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:09:43,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:09:43,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:09:43,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:09:43,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:09:43,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2023-11-29 00:09:43,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 40 transitions, 443 flow. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:43,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:09:43,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2023-11-29 00:09:43,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:09:43,799 INFO L124 PetriNetUnfolderBase]: 209/416 cut-off events. [2023-11-29 00:09:43,800 INFO L125 PetriNetUnfolderBase]: For 4200/4204 co-relation queries the response was YES. [2023-11-29 00:09:43,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2141 conditions, 416 events. 209/416 cut-off events. For 4200/4204 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1655 event pairs, 20 based on Foata normal form. 19/435 useless extension candidates. Maximal degree in co-relation 2104. Up to 134 conditions per place. [2023-11-29 00:09:43,802 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 26 selfloop transitions, 5 changer transitions 56/94 dead transitions. [2023-11-29 00:09:43,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 94 transitions, 1096 flow [2023-11-29 00:09:43,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:09:43,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 00:09:43,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2023-11-29 00:09:43,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48787878787878786 [2023-11-29 00:09:43,803 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 161 transitions. [2023-11-29 00:09:43,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 161 transitions. [2023-11-29 00:09:43,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:09:43,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 161 transitions. [2023-11-29 00:09:43,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 16.1) internal successors, (161), 10 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:43,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 33.0) internal successors, (363), 11 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:43,805 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 33.0) internal successors, (363), 11 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:43,805 INFO L175 Difference]: Start difference. First operand has 113 places, 40 transitions, 443 flow. Second operand 10 states and 161 transitions. [2023-11-29 00:09:43,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 94 transitions, 1096 flow [2023-11-29 00:09:43,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 94 transitions, 819 flow, removed 64 selfloop flow, removed 37 redundant places. [2023-11-29 00:09:43,812 INFO L231 Difference]: Finished difference. Result has 77 places, 31 transitions, 213 flow [2023-11-29 00:09:43,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=213, PETRI_PLACES=77, PETRI_TRANSITIONS=31} [2023-11-29 00:09:43,812 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 40 predicate places. [2023-11-29 00:09:43,812 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 31 transitions, 213 flow [2023-11-29 00:09:43,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:43,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:09:43,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:09:43,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 00:09:43,813 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 00:09:43,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:09:43,813 INFO L85 PathProgramCache]: Analyzing trace with hash -738380386, now seen corresponding path program 5 times [2023-11-29 00:09:43,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:09:43,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046824376] [2023-11-29 00:09:43,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:09:43,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:09:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:09:44,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:09:44,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:09:44,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046824376] [2023-11-29 00:09:44,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046824376] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:09:44,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:09:44,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:09:44,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640747197] [2023-11-29 00:09:44,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:09:44,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:09:44,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:09:44,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:09:44,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:09:44,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2023-11-29 00:09:44,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 31 transitions, 213 flow. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 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) [2023-11-29 00:09:44,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:09:44,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2023-11-29 00:09:44,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:09:44,351 INFO L124 PetriNetUnfolderBase]: 45/110 cut-off events. [2023-11-29 00:09:44,351 INFO L125 PetriNetUnfolderBase]: For 876/877 co-relation queries the response was YES. [2023-11-29 00:09:44,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 572 conditions, 110 events. 45/110 cut-off events. For 876/877 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 262 event pairs, 2 based on Foata normal form. 13/123 useless extension candidates. Maximal degree in co-relation 546. Up to 30 conditions per place. [2023-11-29 00:09:44,352 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 0 selfloop transitions, 0 changer transitions 51/51 dead transitions. [2023-11-29 00:09:44,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 51 transitions, 472 flow [2023-11-29 00:09:44,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:09:44,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 00:09:44,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2023-11-29 00:09:44,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2023-11-29 00:09:44,353 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 153 transitions. [2023-11-29 00:09:44,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 153 transitions. [2023-11-29 00:09:44,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:09:44,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 153 transitions. [2023-11-29 00:09:44,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 12.75) internal successors, (153), 12 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:44,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 33.0) internal successors, (429), 13 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:44,355 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 33.0) internal successors, (429), 13 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:09:44,355 INFO L175 Difference]: Start difference. First operand has 77 places, 31 transitions, 213 flow. Second operand 12 states and 153 transitions. [2023-11-29 00:09:44,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 51 transitions, 472 flow [2023-11-29 00:09:44,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 51 transitions, 369 flow, removed 29 selfloop flow, removed 17 redundant places. [2023-11-29 00:09:44,358 INFO L231 Difference]: Finished difference. Result has 62 places, 0 transitions, 0 flow [2023-11-29 00:09:44,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=62, PETRI_TRANSITIONS=0} [2023-11-29 00:09:44,359 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 25 predicate places. [2023-11-29 00:09:44,359 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 0 transitions, 0 flow [2023-11-29 00:09:44,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 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) [2023-11-29 00:09:44,362 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-11-29 00:09:44,362 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-29 00:09:44,362 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-29 00:09:44,362 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-11-29 00:09:44,362 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-11-29 00:09:44,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 00:09:44,363 INFO L445 BasicCegarLoop]: Path program histogram: [5, 4, 4, 3, 3, 1, 1, 1] [2023-11-29 00:09:44,368 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 00:09:44,368 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 00:09:44,373 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 12:09:44 BasicIcfg [2023-11-29 00:09:44,373 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 00:09:44,373 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 00:09:44,373 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 00:09:44,374 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 00:09:44,374 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:09:18" (3/4) ... [2023-11-29 00:09:44,375 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 00:09:44,378 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-29 00:09:44,378 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-29 00:09:44,383 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 77 nodes and edges [2023-11-29 00:09:44,384 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-29 00:09:44,384 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-29 00:09:44,384 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-29 00:09:44,468 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19a3040b-b809-48da-995e-ae57a4535de5/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 00:09:44,469 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19a3040b-b809-48da-995e-ae57a4535de5/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 00:09:44,469 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 00:09:44,469 INFO L158 Benchmark]: Toolchain (without parser) took 27583.19ms. Allocated memory was 138.4MB in the beginning and 465.6MB in the end (delta: 327.2MB). Free memory was 98.4MB in the beginning and 324.3MB in the end (delta: -225.9MB). Peak memory consumption was 102.1MB. Max. memory is 16.1GB. [2023-11-29 00:09:44,470 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 138.4MB. Free memory is still 107.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:09:44,470 INFO L158 Benchmark]: CACSL2BoogieTranslator took 492.03ms. Allocated memory is still 138.4MB. Free memory was 98.0MB in the beginning and 72.4MB in the end (delta: 25.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-29 00:09:44,471 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.95ms. Allocated memory is still 138.4MB. Free memory was 72.0MB in the beginning and 69.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 00:09:44,471 INFO L158 Benchmark]: Boogie Preprocessor took 54.83ms. Allocated memory is still 138.4MB. Free memory was 69.0MB in the beginning and 64.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 00:09:44,471 INFO L158 Benchmark]: RCFGBuilder took 699.14ms. Allocated memory is still 138.4MB. Free memory was 64.8MB in the beginning and 59.8MB in the end (delta: 5.0MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. [2023-11-29 00:09:44,472 INFO L158 Benchmark]: TraceAbstraction took 26182.07ms. Allocated memory was 138.4MB in the beginning and 465.6MB in the end (delta: 327.2MB). Free memory was 59.1MB in the beginning and 329.5MB in the end (delta: -270.4MB). Peak memory consumption was 57.7MB. Max. memory is 16.1GB. [2023-11-29 00:09:44,472 INFO L158 Benchmark]: Witness Printer took 95.53ms. Allocated memory is still 465.6MB. Free memory was 329.5MB in the beginning and 324.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 00:09:44,475 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 138.4MB. Free memory is still 107.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 492.03ms. Allocated memory is still 138.4MB. Free memory was 98.0MB in the beginning and 72.4MB in the end (delta: 25.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.95ms. Allocated memory is still 138.4MB. Free memory was 72.0MB in the beginning and 69.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.83ms. Allocated memory is still 138.4MB. Free memory was 69.0MB in the beginning and 64.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 699.14ms. Allocated memory is still 138.4MB. Free memory was 64.8MB in the beginning and 59.8MB in the end (delta: 5.0MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. * TraceAbstraction took 26182.07ms. Allocated memory was 138.4MB in the beginning and 465.6MB in the end (delta: 327.2MB). Free memory was 59.1MB in the beginning and 329.5MB in the end (delta: -270.4MB). Peak memory consumption was 57.7MB. Max. memory is 16.1GB. * Witness Printer took 95.53ms. Allocated memory is still 465.6MB. Free memory was 329.5MB in the beginning and 324.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 53 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 26.1s, OverallIterations: 22, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 11.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1338 SdHoareTripleChecker+Valid, 5.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1289 mSDsluCounter, 1103 SdHoareTripleChecker+Invalid, 4.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1038 mSDsCounter, 408 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4724 IncrementalHoareTripleChecker+Invalid, 5132 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 408 mSolverCounterUnsat, 65 mSDtfsCounter, 4724 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 311 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2155occurred in iteration=18, InterpolantAutomatonStates: 229, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 13.6s InterpolantComputationTime, 438 NumberOfCodeBlocks, 438 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 416 ConstructedInterpolants, 0 QuantifiedInterpolants, 5029 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 00:09:44,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19a3040b-b809-48da-995e-ae57a4535de5/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE