./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9e571f-b1ce-4cc2-9721-1b9c41cdae3d/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9e571f-b1ce-4cc2-9721-1b9c41cdae3d/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9e571f-b1ce-4cc2-9721-1b9c41cdae3d/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9e571f-b1ce-4cc2-9721-1b9c41cdae3d/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9e571f-b1ce-4cc2-9721-1b9c41cdae3d/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9e571f-b1ce-4cc2-9721-1b9c41cdae3d/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:47:20,829 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:47:20,925 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9e571f-b1ce-4cc2-9721-1b9c41cdae3d/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:47:20,931 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:47:20,932 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:47:20,962 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:47:20,963 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:47:20,963 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:47:20,964 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:47:20,965 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:47:20,966 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:47:20,967 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:47:20,967 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:47:20,968 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:47:20,969 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:47:20,969 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:47:20,970 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:47:20,971 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:47:20,972 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:47:20,972 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:47:20,973 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:47:20,974 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:47:20,974 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:47:20,975 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:47:20,976 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:47:20,976 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:47:20,977 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:47:20,978 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:47:20,978 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:20,979 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:47:20,979 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:47:20,980 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:47:20,980 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:47:20,981 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:47:20,981 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:47:20,982 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:47:20,983 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:47:20,983 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:47:20,983 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:47:20,984 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_bf9e571f-b1ce-4cc2-9721-1b9c41cdae3d/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9e571f-b1ce-4cc2-9721-1b9c41cdae3d/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac [2023-11-19 07:47:21,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:47:21,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:47:21,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:47:21,250 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:47:21,250 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:47:21,252 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9e571f-b1ce-4cc2-9721-1b9c41cdae3d/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2023-11-19 07:47:24,470 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:47:24,683 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:47:24,684 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9e571f-b1ce-4cc2-9721-1b9c41cdae3d/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2023-11-19 07:47:24,695 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9e571f-b1ce-4cc2-9721-1b9c41cdae3d/bin/uautomizer-verify-uCwYo4JHxu/data/ecf31270f/1f63015ffd5e41babe6515a31f7181be/FLAG42403a0f4 [2023-11-19 07:47:24,709 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9e571f-b1ce-4cc2-9721-1b9c41cdae3d/bin/uautomizer-verify-uCwYo4JHxu/data/ecf31270f/1f63015ffd5e41babe6515a31f7181be [2023-11-19 07:47:24,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:47:24,714 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:47:24,715 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:24,716 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:47:24,728 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:47:24,731 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:24" (1/1) ... [2023-11-19 07:47:24,733 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d6ee90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:24, skipping insertion in model container [2023-11-19 07:47:24,733 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:24" (1/1) ... [2023-11-19 07:47:24,775 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:47:25,015 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_bf9e571f-b1ce-4cc2-9721-1b9c41cdae3d/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3654,3667] [2023-11-19 07:47:25,026 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:25,039 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:47:25,093 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_bf9e571f-b1ce-4cc2-9721-1b9c41cdae3d/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3654,3667] [2023-11-19 07:47:25,104 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:25,131 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:47:25,131 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:47:25,141 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:47:25,141 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:25 WrapperNode [2023-11-19 07:47:25,142 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:25,143 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:25,143 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:47:25,144 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:47:25,152 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:25" (1/1) ... [2023-11-19 07:47:25,174 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:25" (1/1) ... [2023-11-19 07:47:25,224 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 270 [2023-11-19 07:47:25,224 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:25,225 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:47:25,225 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:47:25,226 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:47:25,237 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:25" (1/1) ... [2023-11-19 07:47:25,237 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:25" (1/1) ... [2023-11-19 07:47:25,246 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:25" (1/1) ... [2023-11-19 07:47:25,246 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:25" (1/1) ... [2023-11-19 07:47:25,259 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:25" (1/1) ... [2023-11-19 07:47:25,265 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:25" (1/1) ... [2023-11-19 07:47:25,270 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:25" (1/1) ... [2023-11-19 07:47:25,273 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:25" (1/1) ... [2023-11-19 07:47:25,278 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:47:25,279 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:47:25,279 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:47:25,279 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:47:25,280 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:25" (1/1) ... [2023-11-19 07:47:25,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:25,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9e571f-b1ce-4cc2-9721-1b9c41cdae3d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:25,339 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9e571f-b1ce-4cc2-9721-1b9c41cdae3d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:47:25,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9e571f-b1ce-4cc2-9721-1b9c41cdae3d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:47:25,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:47:25,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:47:25,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:47:25,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:47:25,384 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:47:25,384 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:47:25,385 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:47:25,385 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:47:25,385 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:47:25,385 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:47:25,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:47:25,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:47:25,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:47:25,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:47:25,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:47:25,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:47:25,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:47:25,391 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:47:25,593 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:47:25,596 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:47:26,244 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:47:26,383 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:47:26,383 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-19 07:47:26,388 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:26 BoogieIcfgContainer [2023-11-19 07:47:26,388 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:47:26,391 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:47:26,391 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:47:26,395 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:47:26,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:47:24" (1/3) ... [2023-11-19 07:47:26,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ceb4f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:26, skipping insertion in model container [2023-11-19 07:47:26,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:25" (2/3) ... [2023-11-19 07:47:26,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ceb4f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:26, skipping insertion in model container [2023-11-19 07:47:26,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:26" (3/3) ... [2023-11-19 07:47:26,399 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2023-11-19 07:47:26,408 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:47:26,421 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:47:26,421 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:47:26,421 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:47:26,506 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:47:26,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 233 transitions, 487 flow [2023-11-19 07:47:26,670 INFO L124 PetriNetUnfolderBase]: 18/230 cut-off events. [2023-11-19 07:47:26,670 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:47:26,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 230 events. 18/230 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 143 event pairs, 0 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 189. Up to 3 conditions per place. [2023-11-19 07:47:26,678 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 233 transitions, 487 flow [2023-11-19 07:47:26,685 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 211 places, 219 transitions, 456 flow [2023-11-19 07:47:26,689 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:47:26,699 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 211 places, 219 transitions, 456 flow [2023-11-19 07:47:26,702 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 211 places, 219 transitions, 456 flow [2023-11-19 07:47:26,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 219 transitions, 456 flow [2023-11-19 07:47:26,766 INFO L124 PetriNetUnfolderBase]: 18/219 cut-off events. [2023-11-19 07:47:26,766 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:47:26,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 219 events. 18/219 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 142 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 189. Up to 3 conditions per place. [2023-11-19 07:47:26,771 INFO L119 LiptonReduction]: Number of co-enabled transitions 2194 [2023-11-19 07:47:36,954 INFO L134 LiptonReduction]: Checked pairs total: 2965 [2023-11-19 07:47:36,955 INFO L136 LiptonReduction]: Total number of compositions: 230 [2023-11-19 07:47:36,973 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:47:36,984 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;@14b03e9a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:47:36,999 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-19 07:47:37,018 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:47:37,022 INFO L124 PetriNetUnfolderBase]: 6/27 cut-off events. [2023-11-19 07:47:37,022 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:47:37,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:37,023 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] [2023-11-19 07:47:37,024 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:47:37,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:37,029 INFO L85 PathProgramCache]: Analyzing trace with hash -798774810, now seen corresponding path program 1 times [2023-11-19 07:47:37,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:37,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448702695] [2023-11-19 07:47:37,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:37,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:37,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:37,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:37,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448702695] [2023-11-19 07:47:37,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448702695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:37,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:37,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:47:37,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829621051] [2023-11-19 07:47:37,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:37,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:37,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:37,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:37,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:37,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 463 [2023-11-19 07:47:37,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:37,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:37,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 463 [2023-11-19 07:47:37,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:38,014 INFO L124 PetriNetUnfolderBase]: 370/543 cut-off events. [2023-11-19 07:47:38,015 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2023-11-19 07:47:38,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1154 conditions, 543 events. 370/543 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1576 event pairs, 101 based on Foata normal form. 24/443 useless extension candidates. Maximal degree in co-relation 912. Up to 356 conditions per place. [2023-11-19 07:47:38,025 INFO L140 encePairwiseOnDemand]: 457/463 looper letters, 36 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2023-11-19 07:47:38,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 39 transitions, 180 flow [2023-11-19 07:47:38,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:38,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:47:38,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 655 transitions. [2023-11-19 07:47:38,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715622750179986 [2023-11-19 07:47:38,060 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 655 transitions. [2023-11-19 07:47:38,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 655 transitions. [2023-11-19 07:47:38,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:38,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 655 transitions. [2023-11-19 07:47:38,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:38,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:38,091 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:38,093 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 74 flow. Second operand 3 states and 655 transitions. [2023-11-19 07:47:38,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 39 transitions, 180 flow [2023-11-19 07:47:38,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 39 transitions, 164 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-19 07:47:38,104 INFO L231 Difference]: Finished difference. Result has 29 places, 29 transitions, 81 flow [2023-11-19 07:47:38,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=29, PETRI_TRANSITIONS=29} [2023-11-19 07:47:38,112 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -3 predicate places. [2023-11-19 07:47:38,112 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 29 transitions, 81 flow [2023-11-19 07:47:38,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:38,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:38,114 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] [2023-11-19 07:47:38,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:47:38,115 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:47:38,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:38,117 INFO L85 PathProgramCache]: Analyzing trace with hash 669374560, now seen corresponding path program 1 times [2023-11-19 07:47:38,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:38,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698044740] [2023-11-19 07:47:38,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:38,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:38,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:38,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:38,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698044740] [2023-11-19 07:47:38,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698044740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:38,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:38,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:38,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19407852] [2023-11-19 07:47:38,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:38,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:47:38,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:38,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:47:38,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:47:38,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 463 [2023-11-19 07:47:38,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 81 flow. Second operand has 4 states, 4 states have (on average 199.5) internal successors, (798), 4 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:38,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:38,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 463 [2023-11-19 07:47:38,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:38,758 INFO L124 PetriNetUnfolderBase]: 399/604 cut-off events. [2023-11-19 07:47:38,759 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-11-19 07:47:38,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1442 conditions, 604 events. 399/604 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1783 event pairs, 265 based on Foata normal form. 26/503 useless extension candidates. Maximal degree in co-relation 516. Up to 544 conditions per place. [2023-11-19 07:47:38,766 INFO L140 encePairwiseOnDemand]: 455/463 looper letters, 28 selfloop transitions, 2 changer transitions 14/44 dead transitions. [2023-11-19 07:47:38,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 44 transitions, 202 flow [2023-11-19 07:47:38,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:47:38,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:47:38,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1015 transitions. [2023-11-19 07:47:38,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43844492440604754 [2023-11-19 07:47:38,773 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1015 transitions. [2023-11-19 07:47:38,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1015 transitions. [2023-11-19 07:47:38,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:38,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1015 transitions. [2023-11-19 07:47:38,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 203.0) internal successors, (1015), 5 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:38,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 463.0) internal successors, (2778), 6 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:38,789 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 463.0) internal successors, (2778), 6 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:38,790 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 81 flow. Second operand 5 states and 1015 transitions. [2023-11-19 07:47:38,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 44 transitions, 202 flow [2023-11-19 07:47:38,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 44 transitions, 199 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:47:38,792 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 100 flow [2023-11-19 07:47:38,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=100, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2023-11-19 07:47:38,794 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2023-11-19 07:47:38,794 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 100 flow [2023-11-19 07:47:38,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 199.5) internal successors, (798), 4 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:38,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:38,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:38,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:47:38,797 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:47:38,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:38,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1140178873, now seen corresponding path program 1 times [2023-11-19 07:47:38,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:38,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180297302] [2023-11-19 07:47:38,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:38,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:39,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:47:39,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:39,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180297302] [2023-11-19 07:47:39,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180297302] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:39,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:39,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:47:39,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229508785] [2023-11-19 07:47:39,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:39,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:47:39,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:39,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:47:39,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:47:39,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 463 [2023-11-19 07:47:39,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 199.75) internal successors, (799), 4 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:39,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:39,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 463 [2023-11-19 07:47:39,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:39,402 INFO L124 PetriNetUnfolderBase]: 481/729 cut-off events. [2023-11-19 07:47:39,402 INFO L125 PetriNetUnfolderBase]: For 178/178 co-relation queries the response was YES. [2023-11-19 07:47:39,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1868 conditions, 729 events. 481/729 cut-off events. For 178/178 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2312 event pairs, 329 based on Foata normal form. 22/606 useless extension candidates. Maximal degree in co-relation 1853. Up to 545 conditions per place. [2023-11-19 07:47:39,409 INFO L140 encePairwiseOnDemand]: 458/463 looper letters, 29 selfloop transitions, 2 changer transitions 15/46 dead transitions. [2023-11-19 07:47:39,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 46 transitions, 238 flow [2023-11-19 07:47:39,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:47:39,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:47:39,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 821 transitions. [2023-11-19 07:47:39,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44330453563714906 [2023-11-19 07:47:39,415 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 821 transitions. [2023-11-19 07:47:39,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 821 transitions. [2023-11-19 07:47:39,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:39,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 821 transitions. [2023-11-19 07:47:39,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 205.25) internal successors, (821), 4 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:39,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:39,428 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:39,428 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 100 flow. Second operand 4 states and 821 transitions. [2023-11-19 07:47:39,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 46 transitions, 238 flow [2023-11-19 07:47:39,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 46 transitions, 226 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-19 07:47:39,433 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 108 flow [2023-11-19 07:47:39,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-11-19 07:47:39,435 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2023-11-19 07:47:39,439 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 108 flow [2023-11-19 07:47:39,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 199.75) internal successors, (799), 4 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:39,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:39,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:39,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:47:39,442 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:47:39,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:39,443 INFO L85 PathProgramCache]: Analyzing trace with hash -8323683, now seen corresponding path program 1 times [2023-11-19 07:47:39,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:39,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349051094] [2023-11-19 07:47:39,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:39,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:39,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:41,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:47:41,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:41,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349051094] [2023-11-19 07:47:41,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349051094] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:41,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:41,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:47:41,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774955055] [2023-11-19 07:47:41,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:41,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:47:41,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:41,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:47:41,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:47:41,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 463 [2023-11-19 07:47:41,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 108 flow. Second operand has 9 states, 9 states have (on average 193.66666666666666) internal successors, (1743), 9 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:41,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:41,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 463 [2023-11-19 07:47:41,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:42,118 INFO L124 PetriNetUnfolderBase]: 592/882 cut-off events. [2023-11-19 07:47:42,119 INFO L125 PetriNetUnfolderBase]: For 222/222 co-relation queries the response was YES. [2023-11-19 07:47:42,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2384 conditions, 882 events. 592/882 cut-off events. For 222/222 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3146 event pairs, 27 based on Foata normal form. 1/678 useless extension candidates. Maximal degree in co-relation 2363. Up to 596 conditions per place. [2023-11-19 07:47:42,128 INFO L140 encePairwiseOnDemand]: 452/463 looper letters, 73 selfloop transitions, 22 changer transitions 3/98 dead transitions. [2023-11-19 07:47:42,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 98 transitions, 513 flow [2023-11-19 07:47:42,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:47:42,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:47:42,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1814 transitions. [2023-11-19 07:47:42,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4353251739860811 [2023-11-19 07:47:42,137 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1814 transitions. [2023-11-19 07:47:42,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1814 transitions. [2023-11-19 07:47:42,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:42,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1814 transitions. [2023-11-19 07:47:42,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 201.55555555555554) internal successors, (1814), 9 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:42,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 463.0) internal successors, (4630), 10 states have internal predecessors, (4630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:42,164 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 463.0) internal successors, (4630), 10 states have internal predecessors, (4630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:42,165 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 108 flow. Second operand 9 states and 1814 transitions. [2023-11-19 07:47:42,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 98 transitions, 513 flow [2023-11-19 07:47:42,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 98 transitions, 493 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-19 07:47:42,172 INFO L231 Difference]: Finished difference. Result has 45 places, 51 transitions, 261 flow [2023-11-19 07:47:42,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=261, PETRI_PLACES=45, PETRI_TRANSITIONS=51} [2023-11-19 07:47:42,175 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 13 predicate places. [2023-11-19 07:47:42,175 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 51 transitions, 261 flow [2023-11-19 07:47:42,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 193.66666666666666) internal successors, (1743), 9 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:42,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:42,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:42,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:47:42,178 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:47:42,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:42,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1405525435, now seen corresponding path program 2 times [2023-11-19 07:47:42,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:42,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708451270] [2023-11-19 07:47:42,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:42,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:42,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:47:42,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:42,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708451270] [2023-11-19 07:47:42,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708451270] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:42,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:42,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:47:42,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929963089] [2023-11-19 07:47:42,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:42,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:42,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:42,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:42,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:42,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 463 [2023-11-19 07:47:42,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 51 transitions, 261 flow. Second operand has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:42,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:42,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 463 [2023-11-19 07:47:42,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:42,605 INFO L124 PetriNetUnfolderBase]: 481/735 cut-off events. [2023-11-19 07:47:42,605 INFO L125 PetriNetUnfolderBase]: For 457/457 co-relation queries the response was YES. [2023-11-19 07:47:42,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2471 conditions, 735 events. 481/735 cut-off events. For 457/457 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2479 event pairs, 121 based on Foata normal form. 12/589 useless extension candidates. Maximal degree in co-relation 2446. Up to 674 conditions per place. [2023-11-19 07:47:42,616 INFO L140 encePairwiseOnDemand]: 459/463 looper letters, 50 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2023-11-19 07:47:42,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 53 transitions, 353 flow [2023-11-19 07:47:42,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:42,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:47:42,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 649 transitions. [2023-11-19 07:47:42,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46724262059035276 [2023-11-19 07:47:42,622 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 649 transitions. [2023-11-19 07:47:42,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 649 transitions. [2023-11-19 07:47:42,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:42,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 649 transitions. [2023-11-19 07:47:42,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:42,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:42,633 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:42,633 INFO L175 Difference]: Start difference. First operand has 45 places, 51 transitions, 261 flow. Second operand 3 states and 649 transitions. [2023-11-19 07:47:42,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 53 transitions, 353 flow [2023-11-19 07:47:42,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 53 transitions, 319 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-11-19 07:47:42,644 INFO L231 Difference]: Finished difference. Result has 45 places, 46 transitions, 206 flow [2023-11-19 07:47:42,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=206, PETRI_PLACES=45, PETRI_TRANSITIONS=46} [2023-11-19 07:47:42,648 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 13 predicate places. [2023-11-19 07:47:42,649 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 46 transitions, 206 flow [2023-11-19 07:47:42,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:42,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:42,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:42,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:47:42,651 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:47:42,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:42,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1000979861, now seen corresponding path program 3 times [2023-11-19 07:47:42,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:42,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016345834] [2023-11-19 07:47:42,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:42,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:44,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:47:44,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:44,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016345834] [2023-11-19 07:47:44,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016345834] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:44,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:44,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:47:44,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614183204] [2023-11-19 07:47:44,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:44,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:47:44,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:44,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:47:44,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:47:44,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 463 [2023-11-19 07:47:44,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 46 transitions, 206 flow. Second operand has 9 states, 9 states have (on average 192.66666666666666) internal successors, (1734), 9 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:44,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:44,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 463 [2023-11-19 07:47:44,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:44,843 INFO L124 PetriNetUnfolderBase]: 548/847 cut-off events. [2023-11-19 07:47:44,843 INFO L125 PetriNetUnfolderBase]: For 540/540 co-relation queries the response was YES. [2023-11-19 07:47:44,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2811 conditions, 847 events. 548/847 cut-off events. For 540/540 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3034 event pairs, 103 based on Foata normal form. 1/677 useless extension candidates. Maximal degree in co-relation 2785. Up to 708 conditions per place. [2023-11-19 07:47:44,854 INFO L140 encePairwiseOnDemand]: 452/463 looper letters, 71 selfloop transitions, 16 changer transitions 3/90 dead transitions. [2023-11-19 07:47:44,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 90 transitions, 540 flow [2023-11-19 07:47:44,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:47:44,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:47:44,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1784 transitions. [2023-11-19 07:47:44,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281257499400048 [2023-11-19 07:47:44,864 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1784 transitions. [2023-11-19 07:47:44,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1784 transitions. [2023-11-19 07:47:44,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:44,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1784 transitions. [2023-11-19 07:47:44,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 198.22222222222223) internal successors, (1784), 9 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:44,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 463.0) internal successors, (4630), 10 states have internal predecessors, (4630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:44,889 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 463.0) internal successors, (4630), 10 states have internal predecessors, (4630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:44,889 INFO L175 Difference]: Start difference. First operand has 45 places, 46 transitions, 206 flow. Second operand 9 states and 1784 transitions. [2023-11-19 07:47:44,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 90 transitions, 540 flow [2023-11-19 07:47:44,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 90 transitions, 530 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:47:44,897 INFO L231 Difference]: Finished difference. Result has 55 places, 57 transitions, 328 flow [2023-11-19 07:47:44,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=328, PETRI_PLACES=55, PETRI_TRANSITIONS=57} [2023-11-19 07:47:44,901 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 23 predicate places. [2023-11-19 07:47:44,902 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 57 transitions, 328 flow [2023-11-19 07:47:44,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 192.66666666666666) internal successors, (1734), 9 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:44,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:44,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:44,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:47:44,904 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:47:44,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:44,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1905462415, now seen corresponding path program 4 times [2023-11-19 07:47:44,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:44,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080275741] [2023-11-19 07:47:44,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:44,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:45,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:46,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:47:46,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:46,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080275741] [2023-11-19 07:47:46,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080275741] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:46,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:46,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:47:46,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573488801] [2023-11-19 07:47:46,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:46,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:47:46,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:46,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:47:46,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:47:46,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 463 [2023-11-19 07:47:46,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 57 transitions, 328 flow. Second operand has 9 states, 9 states have (on average 192.66666666666666) internal successors, (1734), 9 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:46,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:46,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 463 [2023-11-19 07:47:46,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:46,908 INFO L124 PetriNetUnfolderBase]: 607/947 cut-off events. [2023-11-19 07:47:46,908 INFO L125 PetriNetUnfolderBase]: For 1048/1048 co-relation queries the response was YES. [2023-11-19 07:47:46,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3517 conditions, 947 events. 607/947 cut-off events. For 1048/1048 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3527 event pairs, 159 based on Foata normal form. 1/766 useless extension candidates. Maximal degree in co-relation 3487. Up to 808 conditions per place. [2023-11-19 07:47:46,922 INFO L140 encePairwiseOnDemand]: 452/463 looper letters, 75 selfloop transitions, 19 changer transitions 3/97 dead transitions. [2023-11-19 07:47:46,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 97 transitions, 689 flow [2023-11-19 07:47:46,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:47:46,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:47:46,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1782 transitions. [2023-11-19 07:47:46,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42764578833693306 [2023-11-19 07:47:46,932 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1782 transitions. [2023-11-19 07:47:46,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1782 transitions. [2023-11-19 07:47:46,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:46,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1782 transitions. [2023-11-19 07:47:46,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 198.0) internal successors, (1782), 9 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:46,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 463.0) internal successors, (4630), 10 states have internal predecessors, (4630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:46,954 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 463.0) internal successors, (4630), 10 states have internal predecessors, (4630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:46,954 INFO L175 Difference]: Start difference. First operand has 55 places, 57 transitions, 328 flow. Second operand 9 states and 1782 transitions. [2023-11-19 07:47:46,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 97 transitions, 689 flow [2023-11-19 07:47:46,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 97 transitions, 653 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-11-19 07:47:46,967 INFO L231 Difference]: Finished difference. Result has 64 places, 69 transitions, 465 flow [2023-11-19 07:47:46,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=465, PETRI_PLACES=64, PETRI_TRANSITIONS=69} [2023-11-19 07:47:46,968 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 32 predicate places. [2023-11-19 07:47:46,969 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 69 transitions, 465 flow [2023-11-19 07:47:46,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 192.66666666666666) internal successors, (1734), 9 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:46,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:46,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:46,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:47:46,971 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:47:46,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:46,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1751578059, now seen corresponding path program 5 times [2023-11-19 07:47:46,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:46,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151442596] [2023-11-19 07:47:46,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:46,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:48,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:47:48,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:48,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151442596] [2023-11-19 07:47:48,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151442596] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:48,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:48,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:47:48,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592292712] [2023-11-19 07:47:48,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:48,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:47:48,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:48,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:47:48,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:47:48,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 463 [2023-11-19 07:47:48,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 69 transitions, 465 flow. Second operand has 9 states, 9 states have (on average 193.66666666666666) internal successors, (1743), 9 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:48,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:48,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 463 [2023-11-19 07:47:48,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:48,839 INFO L124 PetriNetUnfolderBase]: 616/971 cut-off events. [2023-11-19 07:47:48,839 INFO L125 PetriNetUnfolderBase]: For 1495/1495 co-relation queries the response was YES. [2023-11-19 07:47:48,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3865 conditions, 971 events. 616/971 cut-off events. For 1495/1495 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3720 event pairs, 131 based on Foata normal form. 1/800 useless extension candidates. Maximal degree in co-relation 3830. Up to 743 conditions per place. [2023-11-19 07:47:48,851 INFO L140 encePairwiseOnDemand]: 452/463 looper letters, 87 selfloop transitions, 25 changer transitions 3/115 dead transitions. [2023-11-19 07:47:48,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 115 transitions, 870 flow [2023-11-19 07:47:48,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:47:48,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:47:48,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1801 transitions. [2023-11-19 07:47:48,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4322054235661147 [2023-11-19 07:47:48,860 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1801 transitions. [2023-11-19 07:47:48,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1801 transitions. [2023-11-19 07:47:48,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:48,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1801 transitions. [2023-11-19 07:47:48,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 200.11111111111111) internal successors, (1801), 9 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:48,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 463.0) internal successors, (4630), 10 states have internal predecessors, (4630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:48,878 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 463.0) internal successors, (4630), 10 states have internal predecessors, (4630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:48,879 INFO L175 Difference]: Start difference. First operand has 64 places, 69 transitions, 465 flow. Second operand 9 states and 1801 transitions. [2023-11-19 07:47:48,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 115 transitions, 870 flow [2023-11-19 07:47:48,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 115 transitions, 829 flow, removed 14 selfloop flow, removed 2 redundant places. [2023-11-19 07:47:48,896 INFO L231 Difference]: Finished difference. Result has 73 places, 76 transitions, 573 flow [2023-11-19 07:47:48,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=573, PETRI_PLACES=73, PETRI_TRANSITIONS=76} [2023-11-19 07:47:48,897 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 41 predicate places. [2023-11-19 07:47:48,897 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 76 transitions, 573 flow [2023-11-19 07:47:48,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 193.66666666666666) internal successors, (1743), 9 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:48,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:48,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:48,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:47:48,899 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:47:48,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:48,900 INFO L85 PathProgramCache]: Analyzing trace with hash -337430929, now seen corresponding path program 1 times [2023-11-19 07:47:48,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:48,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140541332] [2023-11-19 07:47:48,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:48,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:49,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:47:49,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:49,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140541332] [2023-11-19 07:47:49,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140541332] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:49,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398612113] [2023-11-19 07:47:49,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:49,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:49,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9e571f-b1ce-4cc2-9721-1b9c41cdae3d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:49,118 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9e571f-b1ce-4cc2-9721-1b9c41cdae3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:49,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9e571f-b1ce-4cc2-9721-1b9c41cdae3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:47:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:49,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:47:49,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:49,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:47:49,489 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:49,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:47:49,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398612113] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:49,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:47:49,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-19 07:47:49,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367739743] [2023-11-19 07:47:49,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:49,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:47:49,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:49,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:47:49,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:47:49,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 463 [2023-11-19 07:47:49,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 76 transitions, 573 flow. Second operand has 12 states, 12 states have (on average 190.91666666666666) internal successors, (2291), 12 states have internal predecessors, (2291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:49,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:49,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 463 [2023-11-19 07:47:49,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:50,440 INFO L124 PetriNetUnfolderBase]: 1097/1774 cut-off events. [2023-11-19 07:47:50,441 INFO L125 PetriNetUnfolderBase]: For 4135/4135 co-relation queries the response was YES. [2023-11-19 07:47:50,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7433 conditions, 1774 events. 1097/1774 cut-off events. For 4135/4135 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8025 event pairs, 533 based on Foata normal form. 44/1556 useless extension candidates. Maximal degree in co-relation 7169. Up to 971 conditions per place. [2023-11-19 07:47:50,467 INFO L140 encePairwiseOnDemand]: 457/463 looper letters, 141 selfloop transitions, 8 changer transitions 5/154 dead transitions. [2023-11-19 07:47:50,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 154 transitions, 1444 flow [2023-11-19 07:47:50,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:47:50,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:47:50,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1379 transitions. [2023-11-19 07:47:50,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42548596112311016 [2023-11-19 07:47:50,475 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1379 transitions. [2023-11-19 07:47:50,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1379 transitions. [2023-11-19 07:47:50,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:50,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1379 transitions. [2023-11-19 07:47:50,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:50,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 463.0) internal successors, (3704), 8 states have internal predecessors, (3704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:50,500 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 463.0) internal successors, (3704), 8 states have internal predecessors, (3704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:50,501 INFO L175 Difference]: Start difference. First operand has 73 places, 76 transitions, 573 flow. Second operand 7 states and 1379 transitions. [2023-11-19 07:47:50,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 154 transitions, 1444 flow [2023-11-19 07:47:50,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 154 transitions, 1272 flow, removed 48 selfloop flow, removed 5 redundant places. [2023-11-19 07:47:50,579 INFO L231 Difference]: Finished difference. Result has 78 places, 82 transitions, 584 flow [2023-11-19 07:47:50,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=584, PETRI_PLACES=78, PETRI_TRANSITIONS=82} [2023-11-19 07:47:50,581 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 46 predicate places. [2023-11-19 07:47:50,582 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 82 transitions, 584 flow [2023-11-19 07:47:50,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 190.91666666666666) internal successors, (2291), 12 states have internal predecessors, (2291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:50,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:50,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:50,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9e571f-b1ce-4cc2-9721-1b9c41cdae3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:50,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9e571f-b1ce-4cc2-9721-1b9c41cdae3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:50,805 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:47:50,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:50,806 INFO L85 PathProgramCache]: Analyzing trace with hash -825868421, now seen corresponding path program 1 times [2023-11-19 07:47:50,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:50,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941751051] [2023-11-19 07:47:50,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:50,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:51,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:47:51,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:51,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941751051] [2023-11-19 07:47:51,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941751051] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:51,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654662391] [2023-11-19 07:47:51,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:51,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:51,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9e571f-b1ce-4cc2-9721-1b9c41cdae3d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:51,106 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9e571f-b1ce-4cc2-9721-1b9c41cdae3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:51,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9e571f-b1ce-4cc2-9721-1b9c41cdae3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:47:51,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:51,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:47:51,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:51,343 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:47:51,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:51,466 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:47:51,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654662391] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:51,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:47:51,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2023-11-19 07:47:51,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723880364] [2023-11-19 07:47:51,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:51,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:47:51,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:51,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:47:51,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:47:51,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 463 [2023-11-19 07:47:51,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 82 transitions, 584 flow. Second operand has 13 states, 13 states have (on average 189.0) internal successors, (2457), 13 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:51,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:51,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 463 [2023-11-19 07:47:51,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:52,862 INFO L124 PetriNetUnfolderBase]: 1970/3265 cut-off events. [2023-11-19 07:47:52,863 INFO L125 PetriNetUnfolderBase]: For 6097/6097 co-relation queries the response was YES. [2023-11-19 07:47:52,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12814 conditions, 3265 events. 1970/3265 cut-off events. For 6097/6097 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 17762 event pairs, 564 based on Foata normal form. 86/2903 useless extension candidates. Maximal degree in co-relation 12370. Up to 1158 conditions per place. [2023-11-19 07:47:52,916 INFO L140 encePairwiseOnDemand]: 455/463 looper letters, 137 selfloop transitions, 24 changer transitions 14/175 dead transitions. [2023-11-19 07:47:52,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 175 transitions, 1558 flow [2023-11-19 07:47:52,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:47:52,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:47:52,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1574 transitions. [2023-11-19 07:47:52,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4249460043196544 [2023-11-19 07:47:52,925 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1574 transitions. [2023-11-19 07:47:52,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1574 transitions. [2023-11-19 07:47:52,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:52,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1574 transitions. [2023-11-19 07:47:52,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 196.75) internal successors, (1574), 8 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:52,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 463.0) internal successors, (4167), 9 states have internal predecessors, (4167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:52,944 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 463.0) internal successors, (4167), 9 states have internal predecessors, (4167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:52,944 INFO L175 Difference]: Start difference. First operand has 78 places, 82 transitions, 584 flow. Second operand 8 states and 1574 transitions. [2023-11-19 07:47:52,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 175 transitions, 1558 flow [2023-11-19 07:47:53,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 175 transitions, 1522 flow, removed 13 selfloop flow, removed 3 redundant places. [2023-11-19 07:47:53,026 INFO L231 Difference]: Finished difference. Result has 85 places, 92 transitions, 762 flow [2023-11-19 07:47:53,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=762, PETRI_PLACES=85, PETRI_TRANSITIONS=92} [2023-11-19 07:47:53,027 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 53 predicate places. [2023-11-19 07:47:53,028 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 92 transitions, 762 flow [2023-11-19 07:47:53,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 189.0) internal successors, (2457), 13 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:53,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:53,029 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:53,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9e571f-b1ce-4cc2-9721-1b9c41cdae3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:53,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9e571f-b1ce-4cc2-9721-1b9c41cdae3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 07:47:53,245 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:47:53,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:53,246 INFO L85 PathProgramCache]: Analyzing trace with hash -667418656, now seen corresponding path program 1 times [2023-11-19 07:47:53,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:53,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510094777] [2023-11-19 07:47:53,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:53,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:53,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:47:53,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:53,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510094777] [2023-11-19 07:47:53,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510094777] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:53,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609602829] [2023-11-19 07:47:53,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:53,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:53,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9e571f-b1ce-4cc2-9721-1b9c41cdae3d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:53,552 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9e571f-b1ce-4cc2-9721-1b9c41cdae3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:53,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9e571f-b1ce-4cc2-9721-1b9c41cdae3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:47:53,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:53,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:47:53,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:53,780 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:47:53,780 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:53,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609602829] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:53,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:47:53,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-11-19 07:47:53,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041892338] [2023-11-19 07:47:53,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:53,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:47:53,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:53,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:47:53,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:47:53,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 463 [2023-11-19 07:47:53,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 92 transitions, 762 flow. Second operand has 4 states, 4 states have (on average 210.5) internal successors, (842), 4 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:53,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:53,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 463 [2023-11-19 07:47:53,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:54,601 INFO L124 PetriNetUnfolderBase]: 1865/3112 cut-off events. [2023-11-19 07:47:54,602 INFO L125 PetriNetUnfolderBase]: For 8791/8791 co-relation queries the response was YES. [2023-11-19 07:47:54,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13302 conditions, 3112 events. 1865/3112 cut-off events. For 8791/8791 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 16919 event pairs, 432 based on Foata normal form. 172/2752 useless extension candidates. Maximal degree in co-relation 13114. Up to 1304 conditions per place. [2023-11-19 07:47:54,655 INFO L140 encePairwiseOnDemand]: 459/463 looper letters, 96 selfloop transitions, 15 changer transitions 13/124 dead transitions. [2023-11-19 07:47:54,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 124 transitions, 1201 flow [2023-11-19 07:47:54,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:47:54,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:47:54,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 883 transitions. [2023-11-19 07:47:54,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4767818574514039 [2023-11-19 07:47:54,661 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 883 transitions. [2023-11-19 07:47:54,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 883 transitions. [2023-11-19 07:47:54,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:54,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 883 transitions. [2023-11-19 07:47:54,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 220.75) internal successors, (883), 4 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:54,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:54,670 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:54,671 INFO L175 Difference]: Start difference. First operand has 85 places, 92 transitions, 762 flow. Second operand 4 states and 883 transitions. [2023-11-19 07:47:54,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 124 transitions, 1201 flow [2023-11-19 07:47:54,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 124 transitions, 1099 flow, removed 22 selfloop flow, removed 6 redundant places. [2023-11-19 07:47:54,821 INFO L231 Difference]: Finished difference. Result has 84 places, 66 transitions, 529 flow [2023-11-19 07:47:54,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=529, PETRI_PLACES=84, PETRI_TRANSITIONS=66} [2023-11-19 07:47:54,822 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 52 predicate places. [2023-11-19 07:47:54,822 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 66 transitions, 529 flow [2023-11-19 07:47:54,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 210.5) internal successors, (842), 4 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:54,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:54,823 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:54,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9e571f-b1ce-4cc2-9721-1b9c41cdae3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:55,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9e571f-b1ce-4cc2-9721-1b9c41cdae3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 07:47:55,036 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:47:55,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:55,036 INFO L85 PathProgramCache]: Analyzing trace with hash 298128969, now seen corresponding path program 2 times [2023-11-19 07:47:55,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:55,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494610326] [2023-11-19 07:47:55,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:55,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:55,198 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:47:55,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:55,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494610326] [2023-11-19 07:47:55,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494610326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:55,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:55,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:47:55,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259000213] [2023-11-19 07:47:55,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:55,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:47:55,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:55,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:47:55,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:47:55,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 463 [2023-11-19 07:47:55,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 66 transitions, 529 flow. Second operand has 5 states, 5 states have (on average 209.0) internal successors, (1045), 5 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:55,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:55,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 463 [2023-11-19 07:47:55,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:56,094 INFO L124 PetriNetUnfolderBase]: 2509/3995 cut-off events. [2023-11-19 07:47:56,095 INFO L125 PetriNetUnfolderBase]: For 11879/11879 co-relation queries the response was YES. [2023-11-19 07:47:56,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18157 conditions, 3995 events. 2509/3995 cut-off events. For 11879/11879 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 20502 event pairs, 622 based on Foata normal form. 66/3185 useless extension candidates. Maximal degree in co-relation 18044. Up to 1517 conditions per place. [2023-11-19 07:47:56,142 INFO L140 encePairwiseOnDemand]: 458/463 looper letters, 79 selfloop transitions, 12 changer transitions 18/109 dead transitions. [2023-11-19 07:47:56,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 109 transitions, 1037 flow [2023-11-19 07:47:56,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:47:56,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:47:56,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 877 transitions. [2023-11-19 07:47:56,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47354211663066953 [2023-11-19 07:47:56,148 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 877 transitions. [2023-11-19 07:47:56,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 877 transitions. [2023-11-19 07:47:56,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:56,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 877 transitions. [2023-11-19 07:47:56,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 219.25) internal successors, (877), 4 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:56,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:56,158 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:56,158 INFO L175 Difference]: Start difference. First operand has 84 places, 66 transitions, 529 flow. Second operand 4 states and 877 transitions. [2023-11-19 07:47:56,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 109 transitions, 1037 flow [2023-11-19 07:47:56,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 109 transitions, 929 flow, removed 49 selfloop flow, removed 5 redundant places. [2023-11-19 07:47:56,206 INFO L231 Difference]: Finished difference. Result has 80 places, 55 transitions, 418 flow [2023-11-19 07:47:56,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=418, PETRI_PLACES=80, PETRI_TRANSITIONS=55} [2023-11-19 07:47:56,207 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 48 predicate places. [2023-11-19 07:47:56,208 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 55 transitions, 418 flow [2023-11-19 07:47:56,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 209.0) internal successors, (1045), 5 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:56,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:56,209 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:56,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:47:56,209 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:47:56,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:56,210 INFO L85 PathProgramCache]: Analyzing trace with hash -311581786, now seen corresponding path program 2 times [2023-11-19 07:47:56,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:56,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180950379] [2023-11-19 07:47:56,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:56,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:57,108 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:47:57,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:57,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180950379] [2023-11-19 07:47:57,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180950379] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:57,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872351830] [2023-11-19 07:47:57,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:47:57,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:57,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9e571f-b1ce-4cc2-9721-1b9c41cdae3d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:57,110 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9e571f-b1ce-4cc2-9721-1b9c41cdae3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:57,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf9e571f-b1ce-4cc2-9721-1b9c41cdae3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:47:57,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:47:57,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:47:57,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-19 07:47:57,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:57,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:47:57,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-19 07:47:57,749 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:47:57,749 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:57,996 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:47:57,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 37 [2023-11-19 07:47:58,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-11-19 07:47:58,684 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:47:58,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872351830] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:58,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:47:58,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 23 [2023-11-19 07:47:58,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852090563] [2023-11-19 07:47:58,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:58,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-19 07:47:58,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:58,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-19 07:47:58,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=459, Unknown=1, NotChecked=0, Total=552 [2023-11-19 07:48:00,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 463 [2023-11-19 07:48:00,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 55 transitions, 418 flow. Second operand has 24 states, 24 states have (on average 154.66666666666666) internal successors, (3712), 24 states have internal predecessors, (3712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:00,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:00,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 463 [2023-11-19 07:48:00,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:05,575 INFO L124 PetriNetUnfolderBase]: 8334/12644 cut-off events. [2023-11-19 07:48:05,575 INFO L125 PetriNetUnfolderBase]: For 42324/42324 co-relation queries the response was YES. [2023-11-19 07:48:05,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58053 conditions, 12644 events. 8334/12644 cut-off events. For 42324/42324 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 75812 event pairs, 677 based on Foata normal form. 0/9892 useless extension candidates. Maximal degree in co-relation 58026. Up to 3425 conditions per place. [2023-11-19 07:48:05,739 INFO L140 encePairwiseOnDemand]: 453/463 looper letters, 332 selfloop transitions, 95 changer transitions 22/449 dead transitions. [2023-11-19 07:48:05,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 449 transitions, 4417 flow [2023-11-19 07:48:05,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-19 07:48:05,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-19 07:48:05,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4540 transitions. [2023-11-19 07:48:05,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3502005553841407 [2023-11-19 07:48:05,764 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4540 transitions. [2023-11-19 07:48:05,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4540 transitions. [2023-11-19 07:48:05,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:05,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4540 transitions. [2023-11-19 07:48:05,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 162.14285714285714) internal successors, (4540), 28 states have internal predecessors, (4540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:05,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 463.0) internal successors, (13427), 29 states have internal predecessors, (13427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:05,817 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 463.0) internal successors, (13427), 29 states have internal predecessors, (13427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:05,817 INFO L175 Difference]: Start difference. First operand has 80 places, 55 transitions, 418 flow. Second operand 28 states and 4540 transitions. [2023-11-19 07:48:05,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 449 transitions, 4417 flow