./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i --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_91cd3247-58d1-4de8-9da4-a801ea0d9592/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd3247-58d1-4de8-9da4-a801ea0d9592/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_91cd3247-58d1-4de8-9da4-a801ea0d9592/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd3247-58d1-4de8-9da4-a801ea0d9592/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd3247-58d1-4de8-9da4-a801ea0d9592/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_91cd3247-58d1-4de8-9da4-a801ea0d9592/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 2ad190c36ab064f1e4bfbebf06775e6b037058a5a86becabf7b70897d3619304 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:06:40,594 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:06:40,663 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd3247-58d1-4de8-9da4-a801ea0d9592/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:06:40,668 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:06:40,668 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:06:40,694 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:06:40,695 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:06:40,696 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:06:40,696 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:06:40,697 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:06:40,698 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:06:40,698 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:06:40,699 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:06:40,700 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:06:40,700 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:06:40,701 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:06:40,701 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:06:40,702 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:06:40,702 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:06:40,703 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:06:40,703 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:06:40,708 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:06:40,709 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:06:40,709 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:06:40,710 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:06:40,710 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:06:40,711 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:06:40,711 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:06:40,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:06:40,712 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:06:40,713 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:06:40,714 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:06:40,714 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:06:40,715 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:06:40,715 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:06:40,715 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:06:40,715 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:06:40,716 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:06:40,716 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:06:40,716 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_91cd3247-58d1-4de8-9da4-a801ea0d9592/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd3247-58d1-4de8-9da4-a801ea0d9592/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ad190c36ab064f1e4bfbebf06775e6b037058a5a86becabf7b70897d3619304 [2023-11-19 08:06:41,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:06:41,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:06:41,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:06:41,062 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:06:41,063 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:06:41,064 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd3247-58d1-4de8-9da4-a801ea0d9592/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i [2023-11-19 08:06:44,609 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:06:45,025 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:06:45,026 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd3247-58d1-4de8-9da4-a801ea0d9592/sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i [2023-11-19 08:06:45,067 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd3247-58d1-4de8-9da4-a801ea0d9592/bin/uautomizer-verify-uCwYo4JHxu/data/f830d6a2d/20498f4ed0504c7097c051522d2c072e/FLAGef5c48e60 [2023-11-19 08:06:45,087 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd3247-58d1-4de8-9da4-a801ea0d9592/bin/uautomizer-verify-uCwYo4JHxu/data/f830d6a2d/20498f4ed0504c7097c051522d2c072e [2023-11-19 08:06:45,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:06:45,093 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:06:45,096 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:06:45,099 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:06:45,106 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:06:45,107 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:06:45" (1/1) ... [2023-11-19 08:06:45,109 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49cf9305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:45, skipping insertion in model container [2023-11-19 08:06:45,109 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:06:45" (1/1) ... [2023-11-19 08:06:45,212 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:06:45,430 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_91cd3247-58d1-4de8-9da4-a801ea0d9592/sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i[992,1005] [2023-11-19 08:06:45,894 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:06:45,911 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:06:45,931 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_91cd3247-58d1-4de8-9da4-a801ea0d9592/sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i[992,1005] [2023-11-19 08:06:46,038 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:06:46,098 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:06:46,099 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:06:46,108 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:06:46,108 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:46 WrapperNode [2023-11-19 08:06:46,109 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:06:46,110 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:06:46,110 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:06:46,111 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:06:46,121 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:46" (1/1) ... [2023-11-19 08:06:46,167 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:46" (1/1) ... [2023-11-19 08:06:46,225 INFO L138 Inliner]: procedures = 177, calls = 86, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 151 [2023-11-19 08:06:46,226 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:06:46,227 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:06:46,227 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:06:46,228 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:06:46,239 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:46" (1/1) ... [2023-11-19 08:06:46,240 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:46" (1/1) ... [2023-11-19 08:06:46,260 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:46" (1/1) ... [2023-11-19 08:06:46,264 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:46" (1/1) ... [2023-11-19 08:06:46,295 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:46" (1/1) ... [2023-11-19 08:06:46,298 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:46" (1/1) ... [2023-11-19 08:06:46,308 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:46" (1/1) ... [2023-11-19 08:06:46,324 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:46" (1/1) ... [2023-11-19 08:06:46,330 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:06:46,337 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:06:46,337 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:06:46,338 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:06:46,339 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:46" (1/1) ... [2023-11-19 08:06:46,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:06:46,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd3247-58d1-4de8-9da4-a801ea0d9592/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:46,379 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd3247-58d1-4de8-9da4-a801ea0d9592/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:06:46,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91cd3247-58d1-4de8-9da4-a801ea0d9592/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:06:46,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:06:46,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:06:46,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 08:06:46,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:06:46,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:06:46,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:06:46,436 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 08:06:46,436 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 08:06:46,437 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 08:06:46,437 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 08:06:46,439 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 08:06:46,439 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 08:06:46,439 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-19 08:06:46,439 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-19 08:06:46,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:06:46,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 08:06:46,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:06:46,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:06:46,442 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 08:06:46,677 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:06:46,679 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:06:47,392 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:06:47,789 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:06:47,790 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 08:06:47,798 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:47 BoogieIcfgContainer [2023-11-19 08:06:47,798 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:06:47,804 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:06:47,804 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:06:47,810 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:06:47,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:06:45" (1/3) ... [2023-11-19 08:06:47,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0a80ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:06:47, skipping insertion in model container [2023-11-19 08:06:47,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:46" (2/3) ... [2023-11-19 08:06:47,815 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0a80ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:06:47, skipping insertion in model container [2023-11-19 08:06:47,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:47" (3/3) ... [2023-11-19 08:06:47,817 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_rmo.opt.i [2023-11-19 08:06:47,829 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:06:47,841 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:06:47,842 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:06:47,842 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:06:47,965 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:06:48,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 148 transitions, 312 flow [2023-11-19 08:06:48,101 INFO L124 PetriNetUnfolderBase]: 2/144 cut-off events. [2023-11-19 08:06:48,101 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:06:48,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 144 events. 2/144 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2023-11-19 08:06:48,110 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 148 transitions, 312 flow [2023-11-19 08:06:48,116 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 127 transitions, 266 flow [2023-11-19 08:06:48,121 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:06:48,146 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 127 transitions, 266 flow [2023-11-19 08:06:48,151 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 139 places, 127 transitions, 266 flow [2023-11-19 08:06:48,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 127 transitions, 266 flow [2023-11-19 08:06:48,246 INFO L124 PetriNetUnfolderBase]: 1/127 cut-off events. [2023-11-19 08:06:48,246 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:06:48,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 127 events. 1/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2023-11-19 08:06:48,252 INFO L119 LiptonReduction]: Number of co-enabled transitions 2002 [2023-11-19 08:06:57,095 INFO L134 LiptonReduction]: Checked pairs total: 5031 [2023-11-19 08:06:57,096 INFO L136 LiptonReduction]: Total number of compositions: 105 [2023-11-19 08:06:57,111 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:06:57,118 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;@3d13a821, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:06:57,119 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-19 08:06:57,130 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:06:57,131 INFO L124 PetriNetUnfolderBase]: 1/25 cut-off events. [2023-11-19 08:06:57,131 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:06:57,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:57,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:57,133 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 2 more)] === [2023-11-19 08:06:57,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:57,138 INFO L85 PathProgramCache]: Analyzing trace with hash 2081744792, now seen corresponding path program 1 times [2023-11-19 08:06:57,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:57,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087533523] [2023-11-19 08:06:57,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:57,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:57,448 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 08:06:57,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:57,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087533523] [2023-11-19 08:06:57,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087533523] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:57,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:57,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:57,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584040019] [2023-11-19 08:06:57,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:57,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:06:57,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:57,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:06:57,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:06:57,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 253 [2023-11-19 08:06:57,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 26 transitions, 64 flow. Second operand has 2 states, 2 states have (on average 138.5) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 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 08:06:57,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:57,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 253 [2023-11-19 08:06:57,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:59,000 INFO L124 PetriNetUnfolderBase]: 3927/5408 cut-off events. [2023-11-19 08:06:59,001 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2023-11-19 08:06:59,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10960 conditions, 5408 events. 3927/5408 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 24018 event pairs, 3927 based on Foata normal form. 0/5392 useless extension candidates. Maximal degree in co-relation 10948. Up to 5377 conditions per place. [2023-11-19 08:06:59,072 INFO L140 encePairwiseOnDemand]: 252/253 looper letters, 24 selfloop transitions, 0 changer transitions 0/25 dead transitions. [2023-11-19 08:06:59,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 25 transitions, 110 flow [2023-11-19 08:06:59,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:06:59,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 08:06:59,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 291 transitions. [2023-11-19 08:06:59,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.575098814229249 [2023-11-19 08:06:59,096 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 291 transitions. [2023-11-19 08:06:59,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 291 transitions. [2023-11-19 08:06:59,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:59,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 291 transitions. [2023-11-19 08:06:59,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 145.5) internal successors, (291), 2 states have internal predecessors, (291), 0 states have call successors, (0), 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 08:06:59,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 0 states have call successors, (0), 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 08:06:59,114 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 0 states have call successors, (0), 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 08:06:59,116 INFO L175 Difference]: Start difference. First operand has 38 places, 26 transitions, 64 flow. Second operand 2 states and 291 transitions. [2023-11-19 08:06:59,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 25 transitions, 110 flow [2023-11-19 08:06:59,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 25 transitions, 106 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 08:06:59,127 INFO L231 Difference]: Finished difference. Result has 35 places, 25 transitions, 58 flow [2023-11-19 08:06:59,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2023-11-19 08:06:59,134 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -3 predicate places. [2023-11-19 08:06:59,134 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 58 flow [2023-11-19 08:06:59,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 138.5) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 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 08:06:59,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:59,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:59,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:06:59,136 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 2 more)] === [2023-11-19 08:06:59,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:59,137 INFO L85 PathProgramCache]: Analyzing trace with hash 108223195, now seen corresponding path program 1 times [2023-11-19 08:06:59,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:59,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481806352] [2023-11-19 08:06:59,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:59,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:59,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:59,725 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 08:06:59,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:59,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481806352] [2023-11-19 08:06:59,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481806352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:59,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:59,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:59,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951773124] [2023-11-19 08:06:59,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:59,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:06:59,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:59,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:06:59,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:06:59,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 253 [2023-11-19 08:06:59,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 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 08:06:59,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:59,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 253 [2023-11-19 08:06:59,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:01,695 INFO L124 PetriNetUnfolderBase]: 5447/7504 cut-off events. [2023-11-19 08:07:01,695 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:07:01,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15213 conditions, 7504 events. 5447/7504 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 33930 event pairs, 1399 based on Foata normal form. 320/7824 useless extension candidates. Maximal degree in co-relation 15210. Up to 5953 conditions per place. [2023-11-19 08:07:01,771 INFO L140 encePairwiseOnDemand]: 248/253 looper letters, 35 selfloop transitions, 3 changer transitions 23/61 dead transitions. [2023-11-19 08:07:01,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 61 transitions, 254 flow [2023-11-19 08:07:01,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:07:01,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:07:01,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 703 transitions. [2023-11-19 08:07:01,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5557312252964427 [2023-11-19 08:07:01,779 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 703 transitions. [2023-11-19 08:07:01,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 703 transitions. [2023-11-19 08:07:01,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:01,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 703 transitions. [2023-11-19 08:07:01,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 140.6) internal successors, (703), 5 states have internal predecessors, (703), 0 states have call successors, (0), 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 08:07:01,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 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 08:07:01,798 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 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 08:07:01,799 INFO L175 Difference]: Start difference. First operand has 35 places, 25 transitions, 58 flow. Second operand 5 states and 703 transitions. [2023-11-19 08:07:01,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 61 transitions, 254 flow [2023-11-19 08:07:01,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 61 transitions, 254 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:07:01,811 INFO L231 Difference]: Finished difference. Result has 42 places, 27 transitions, 85 flow [2023-11-19 08:07:01,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=85, PETRI_PLACES=42, PETRI_TRANSITIONS=27} [2023-11-19 08:07:01,813 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 4 predicate places. [2023-11-19 08:07:01,813 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 27 transitions, 85 flow [2023-11-19 08:07:01,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 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 08:07:01,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:01,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:01,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:07:01,816 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 2 more)] === [2023-11-19 08:07:01,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:01,820 INFO L85 PathProgramCache]: Analyzing trace with hash -940028016, now seen corresponding path program 1 times [2023-11-19 08:07:01,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:01,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313047923] [2023-11-19 08:07:01,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:01,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:02,168 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 08:07:02,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:02,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313047923] [2023-11-19 08:07:02,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313047923] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:02,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:02,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:07:02,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812259644] [2023-11-19 08:07:02,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:02,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:07:02,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:02,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:07:02,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:07:02,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 253 [2023-11-19 08:07:02,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 27 transitions, 85 flow. Second operand has 4 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 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 08:07:02,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:02,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 253 [2023-11-19 08:07:02,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:03,921 INFO L124 PetriNetUnfolderBase]: 4579/6388 cut-off events. [2023-11-19 08:07:03,922 INFO L125 PetriNetUnfolderBase]: For 1984/1992 co-relation queries the response was YES. [2023-11-19 08:07:03,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14490 conditions, 6388 events. 4579/6388 cut-off events. For 1984/1992 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 30857 event pairs, 762 based on Foata normal form. 292/6676 useless extension candidates. Maximal degree in co-relation 14483. Up to 4660 conditions per place. [2023-11-19 08:07:03,989 INFO L140 encePairwiseOnDemand]: 249/253 looper letters, 41 selfloop transitions, 2 changer transitions 22/67 dead transitions. [2023-11-19 08:07:03,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 67 transitions, 318 flow [2023-11-19 08:07:03,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:07:03,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:07:03,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 710 transitions. [2023-11-19 08:07:03,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5612648221343873 [2023-11-19 08:07:03,994 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 710 transitions. [2023-11-19 08:07:03,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 710 transitions. [2023-11-19 08:07:03,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:03,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 710 transitions. [2023-11-19 08:07:03,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 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 08:07:04,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 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 08:07:04,003 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 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 08:07:04,004 INFO L175 Difference]: Start difference. First operand has 42 places, 27 transitions, 85 flow. Second operand 5 states and 710 transitions. [2023-11-19 08:07:04,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 67 transitions, 318 flow [2023-11-19 08:07:04,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 67 transitions, 312 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-19 08:07:04,049 INFO L231 Difference]: Finished difference. Result has 45 places, 27 transitions, 92 flow [2023-11-19 08:07:04,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=45, PETRI_TRANSITIONS=27} [2023-11-19 08:07:04,051 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 7 predicate places. [2023-11-19 08:07:04,055 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 27 transitions, 92 flow [2023-11-19 08:07:04,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 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 08:07:04,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:04,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:04,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:07:04,057 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 2 more)] === [2023-11-19 08:07:04,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:04,058 INFO L85 PathProgramCache]: Analyzing trace with hash 208956109, now seen corresponding path program 1 times [2023-11-19 08:07:04,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:04,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141637161] [2023-11-19 08:07:04,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:04,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:04,406 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 08:07:04,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:04,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141637161] [2023-11-19 08:07:04,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141637161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:04,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:04,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:07:04,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927960792] [2023-11-19 08:07:04,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:04,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:07:04,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:04,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:07:04,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:07:04,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 253 [2023-11-19 08:07:04,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 27 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 134.5) internal successors, (538), 4 states have internal predecessors, (538), 0 states have call successors, (0), 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 08:07:04,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:04,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 253 [2023-11-19 08:07:04,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:06,280 INFO L124 PetriNetUnfolderBase]: 4185/5886 cut-off events. [2023-11-19 08:07:06,280 INFO L125 PetriNetUnfolderBase]: For 3145/3145 co-relation queries the response was YES. [2023-11-19 08:07:06,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14245 conditions, 5886 events. 4185/5886 cut-off events. For 3145/3145 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 26665 event pairs, 1167 based on Foata normal form. 180/6066 useless extension candidates. Maximal degree in co-relation 14236. Up to 4375 conditions per place. [2023-11-19 08:07:06,338 INFO L140 encePairwiseOnDemand]: 249/253 looper letters, 36 selfloop transitions, 2 changer transitions 18/58 dead transitions. [2023-11-19 08:07:06,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 58 transitions, 277 flow [2023-11-19 08:07:06,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:07:06,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:07:06,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 712 transitions. [2023-11-19 08:07:06,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5628458498023715 [2023-11-19 08:07:06,345 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 712 transitions. [2023-11-19 08:07:06,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 712 transitions. [2023-11-19 08:07:06,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:06,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 712 transitions. [2023-11-19 08:07:06,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 142.4) internal successors, (712), 5 states have internal predecessors, (712), 0 states have call successors, (0), 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 08:07:06,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 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 08:07:06,353 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 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 08:07:06,354 INFO L175 Difference]: Start difference. First operand has 45 places, 27 transitions, 92 flow. Second operand 5 states and 712 transitions. [2023-11-19 08:07:06,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 58 transitions, 277 flow [2023-11-19 08:07:06,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 58 transitions, 267 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-19 08:07:06,367 INFO L231 Difference]: Finished difference. Result has 46 places, 27 transitions, 96 flow [2023-11-19 08:07:06,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=96, PETRI_PLACES=46, PETRI_TRANSITIONS=27} [2023-11-19 08:07:06,369 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 8 predicate places. [2023-11-19 08:07:06,369 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 27 transitions, 96 flow [2023-11-19 08:07:06,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.5) internal successors, (538), 4 states have internal predecessors, (538), 0 states have call successors, (0), 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 08:07:06,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:06,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:06,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:07:06,370 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 2 more)] === [2023-11-19 08:07:06,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:06,371 INFO L85 PathProgramCache]: Analyzing trace with hash 598245368, now seen corresponding path program 1 times [2023-11-19 08:07:06,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:06,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715504387] [2023-11-19 08:07:06,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:06,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:06,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:06,547 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 08:07:06,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:06,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715504387] [2023-11-19 08:07:06,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715504387] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:06,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:06,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:07:06,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90260275] [2023-11-19 08:07:06,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:06,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:07:06,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:06,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:07:06,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:07:06,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 253 [2023-11-19 08:07:06,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 27 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 0 states have call successors, (0), 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 08:07:06,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:06,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 253 [2023-11-19 08:07:06,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:08,440 INFO L124 PetriNetUnfolderBase]: 6010/8359 cut-off events. [2023-11-19 08:07:08,440 INFO L125 PetriNetUnfolderBase]: For 4424/4424 co-relation queries the response was YES. [2023-11-19 08:07:08,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20366 conditions, 8359 events. 6010/8359 cut-off events. For 4424/4424 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 40059 event pairs, 2647 based on Foata normal form. 252/8611 useless extension candidates. Maximal degree in co-relation 20356. Up to 4289 conditions per place. [2023-11-19 08:07:08,500 INFO L140 encePairwiseOnDemand]: 249/253 looper letters, 39 selfloop transitions, 3 changer transitions 20/62 dead transitions. [2023-11-19 08:07:08,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 62 transitions, 309 flow [2023-11-19 08:07:08,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:07:08,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:07:08,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 703 transitions. [2023-11-19 08:07:08,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5557312252964427 [2023-11-19 08:07:08,505 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 703 transitions. [2023-11-19 08:07:08,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 703 transitions. [2023-11-19 08:07:08,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:08,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 703 transitions. [2023-11-19 08:07:08,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 140.6) internal successors, (703), 5 states have internal predecessors, (703), 0 states have call successors, (0), 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 08:07:08,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 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 08:07:08,514 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 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 08:07:08,515 INFO L175 Difference]: Start difference. First operand has 46 places, 27 transitions, 96 flow. Second operand 5 states and 703 transitions. [2023-11-19 08:07:08,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 62 transitions, 309 flow [2023-11-19 08:07:08,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 62 transitions, 293 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-11-19 08:07:08,634 INFO L231 Difference]: Finished difference. Result has 47 places, 27 transitions, 101 flow [2023-11-19 08:07:08,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=101, PETRI_PLACES=47, PETRI_TRANSITIONS=27} [2023-11-19 08:07:08,635 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 9 predicate places. [2023-11-19 08:07:08,635 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 27 transitions, 101 flow [2023-11-19 08:07:08,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 0 states have call successors, (0), 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 08:07:08,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:08,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:08,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:07:08,636 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 2 more)] === [2023-11-19 08:07:08,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:08,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1432036328, now seen corresponding path program 1 times [2023-11-19 08:07:08,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:08,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39993629] [2023-11-19 08:07:08,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:08,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:08,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:08,924 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 08:07:08,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:08,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39993629] [2023-11-19 08:07:08,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39993629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:08,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:08,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:07:08,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459969392] [2023-11-19 08:07:08,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:08,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:07:08,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:08,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:07:08,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:07:08,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 253 [2023-11-19 08:07:08,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 27 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 0 states have call successors, (0), 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 08:07:08,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:08,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 253 [2023-11-19 08:07:08,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:11,289 INFO L124 PetriNetUnfolderBase]: 8617/12010 cut-off events. [2023-11-19 08:07:11,289 INFO L125 PetriNetUnfolderBase]: For 8152/8152 co-relation queries the response was YES. [2023-11-19 08:07:11,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29036 conditions, 12010 events. 8617/12010 cut-off events. For 8152/8152 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 61712 event pairs, 1363 based on Foata normal form. 252/12262 useless extension candidates. Maximal degree in co-relation 29025. Up to 5806 conditions per place. [2023-11-19 08:07:11,339 INFO L140 encePairwiseOnDemand]: 247/253 looper letters, 44 selfloop transitions, 4 changer transitions 17/65 dead transitions. [2023-11-19 08:07:11,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 65 transitions, 341 flow [2023-11-19 08:07:11,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:07:11,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:07:11,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 696 transitions. [2023-11-19 08:07:11,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5501976284584981 [2023-11-19 08:07:11,343 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 696 transitions. [2023-11-19 08:07:11,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 696 transitions. [2023-11-19 08:07:11,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:11,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 696 transitions. [2023-11-19 08:07:11,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 139.2) internal successors, (696), 5 states have internal predecessors, (696), 0 states have call successors, (0), 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 08:07:11,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 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 08:07:11,352 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 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 08:07:11,352 INFO L175 Difference]: Start difference. First operand has 47 places, 27 transitions, 101 flow. Second operand 5 states and 696 transitions. [2023-11-19 08:07:11,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 65 transitions, 341 flow [2023-11-19 08:07:11,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 65 transitions, 327 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-19 08:07:11,403 INFO L231 Difference]: Finished difference. Result has 48 places, 27 transitions, 107 flow [2023-11-19 08:07:11,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=107, PETRI_PLACES=48, PETRI_TRANSITIONS=27} [2023-11-19 08:07:11,406 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 10 predicate places. [2023-11-19 08:07:11,407 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 27 transitions, 107 flow [2023-11-19 08:07:11,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 0 states have call successors, (0), 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 08:07:11,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:11,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:11,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:07:11,408 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 2 more)] === [2023-11-19 08:07:11,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:11,408 INFO L85 PathProgramCache]: Analyzing trace with hash -890057114, now seen corresponding path program 2 times [2023-11-19 08:07:11,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:11,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376759190] [2023-11-19 08:07:11,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:11,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:11,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:11,683 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 08:07:11,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:11,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376759190] [2023-11-19 08:07:11,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376759190] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:11,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:11,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:07:11,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475981970] [2023-11-19 08:07:11,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:11,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:07:11,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:11,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:07:11,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:07:11,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 253 [2023-11-19 08:07:11,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 27 transitions, 107 flow. Second operand has 4 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 0 states have call successors, (0), 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 08:07:11,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:11,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 253 [2023-11-19 08:07:11,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:12,687 INFO L124 PetriNetUnfolderBase]: 3963/5777 cut-off events. [2023-11-19 08:07:12,688 INFO L125 PetriNetUnfolderBase]: For 2127/2155 co-relation queries the response was YES. [2023-11-19 08:07:12,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14075 conditions, 5777 events. 3963/5777 cut-off events. For 2127/2155 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 29679 event pairs, 658 based on Foata normal form. 389/6151 useless extension candidates. Maximal degree in co-relation 14064. Up to 2996 conditions per place. [2023-11-19 08:07:12,713 INFO L140 encePairwiseOnDemand]: 246/253 looper letters, 49 selfloop transitions, 6 changer transitions 1/58 dead transitions. [2023-11-19 08:07:12,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 58 transitions, 309 flow [2023-11-19 08:07:12,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:07:12,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:07:12,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 559 transitions. [2023-11-19 08:07:12,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5523715415019763 [2023-11-19 08:07:12,717 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 559 transitions. [2023-11-19 08:07:12,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 559 transitions. [2023-11-19 08:07:12,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:12,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 559 transitions. [2023-11-19 08:07:12,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 0 states have call successors, (0), 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 08:07:12,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 0 states have call successors, (0), 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 08:07:12,723 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 0 states have call successors, (0), 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 08:07:12,723 INFO L175 Difference]: Start difference. First operand has 48 places, 27 transitions, 107 flow. Second operand 4 states and 559 transitions. [2023-11-19 08:07:12,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 58 transitions, 309 flow [2023-11-19 08:07:12,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 58 transitions, 285 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-19 08:07:12,734 INFO L231 Difference]: Finished difference. Result has 47 places, 31 transitions, 135 flow [2023-11-19 08:07:12,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=135, PETRI_PLACES=47, PETRI_TRANSITIONS=31} [2023-11-19 08:07:12,735 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 9 predicate places. [2023-11-19 08:07:12,735 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 31 transitions, 135 flow [2023-11-19 08:07:12,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 0 states have call successors, (0), 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 08:07:12,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:12,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:12,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:07:12,736 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 2 more)] === [2023-11-19 08:07:12,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:12,737 INFO L85 PathProgramCache]: Analyzing trace with hash -37015044, now seen corresponding path program 1 times [2023-11-19 08:07:12,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:12,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598350046] [2023-11-19 08:07:12,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:12,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:12,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:13,143 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 08:07:13,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:13,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598350046] [2023-11-19 08:07:13,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598350046] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:13,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:13,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:07:13,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714935325] [2023-11-19 08:07:13,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:13,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:07:13,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:13,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:07:13,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:07:13,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 253 [2023-11-19 08:07:13,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 31 transitions, 135 flow. Second operand has 5 states, 5 states have (on average 129.4) internal successors, (647), 5 states have internal predecessors, (647), 0 states have call successors, (0), 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 08:07:13,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:13,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 253 [2023-11-19 08:07:13,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:13,810 INFO L124 PetriNetUnfolderBase]: 2168/3329 cut-off events. [2023-11-19 08:07:13,810 INFO L125 PetriNetUnfolderBase]: For 1454/1466 co-relation queries the response was YES. [2023-11-19 08:07:13,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9534 conditions, 3329 events. 2168/3329 cut-off events. For 1454/1466 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 16678 event pairs, 279 based on Foata normal form. 278/3595 useless extension candidates. Maximal degree in co-relation 9523. Up to 1117 conditions per place. [2023-11-19 08:07:13,834 INFO L140 encePairwiseOnDemand]: 246/253 looper letters, 58 selfloop transitions, 10 changer transitions 1/71 dead transitions. [2023-11-19 08:07:13,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 71 transitions, 393 flow [2023-11-19 08:07:13,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:07:13,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:07:13,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 699 transitions. [2023-11-19 08:07:13,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5525691699604743 [2023-11-19 08:07:13,839 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 699 transitions. [2023-11-19 08:07:13,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 699 transitions. [2023-11-19 08:07:13,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:13,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 699 transitions. [2023-11-19 08:07:13,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 139.8) internal successors, (699), 5 states have internal predecessors, (699), 0 states have call successors, (0), 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 08:07:13,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 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 08:07:13,846 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 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 08:07:13,847 INFO L175 Difference]: Start difference. First operand has 47 places, 31 transitions, 135 flow. Second operand 5 states and 699 transitions. [2023-11-19 08:07:13,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 71 transitions, 393 flow [2023-11-19 08:07:13,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 71 transitions, 382 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-19 08:07:13,852 INFO L231 Difference]: Finished difference. Result has 51 places, 35 transitions, 187 flow [2023-11-19 08:07:13,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=187, PETRI_PLACES=51, PETRI_TRANSITIONS=35} [2023-11-19 08:07:13,853 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places. [2023-11-19 08:07:13,853 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 35 transitions, 187 flow [2023-11-19 08:07:13,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 129.4) internal successors, (647), 5 states have internal predecessors, (647), 0 states have call successors, (0), 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 08:07:13,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:13,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:13,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 08:07:13,855 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 2 more)] === [2023-11-19 08:07:13,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:13,855 INFO L85 PathProgramCache]: Analyzing trace with hash -201664746, now seen corresponding path program 1 times [2023-11-19 08:07:13,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:13,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750175596] [2023-11-19 08:07:13,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:13,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:16,102 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 08:07:16,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:16,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750175596] [2023-11-19 08:07:16,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750175596] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:16,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:16,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:07:16,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773393680] [2023-11-19 08:07:16,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:16,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:07:16,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:16,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:07:16,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:07:16,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 253 [2023-11-19 08:07:16,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 35 transitions, 187 flow. Second operand has 8 states, 8 states have (on average 124.375) internal successors, (995), 8 states have internal predecessors, (995), 0 states have call successors, (0), 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 08:07:16,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:16,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 253 [2023-11-19 08:07:16,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:17,408 INFO L124 PetriNetUnfolderBase]: 2154/3426 cut-off events. [2023-11-19 08:07:17,408 INFO L125 PetriNetUnfolderBase]: For 3920/3934 co-relation queries the response was YES. [2023-11-19 08:07:17,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11143 conditions, 3426 events. 2154/3426 cut-off events. For 3920/3934 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 17984 event pairs, 1076 based on Foata normal form. 55/3470 useless extension candidates. Maximal degree in co-relation 11131. Up to 2721 conditions per place. [2023-11-19 08:07:17,425 INFO L140 encePairwiseOnDemand]: 244/253 looper letters, 64 selfloop transitions, 11 changer transitions 16/93 dead transitions. [2023-11-19 08:07:17,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 93 transitions, 661 flow [2023-11-19 08:07:17,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:07:17,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:07:17,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 925 transitions. [2023-11-19 08:07:17,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5223037831733484 [2023-11-19 08:07:17,430 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 925 transitions. [2023-11-19 08:07:17,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 925 transitions. [2023-11-19 08:07:17,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:17,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 925 transitions. [2023-11-19 08:07:17,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 132.14285714285714) internal successors, (925), 7 states have internal predecessors, (925), 0 states have call successors, (0), 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 08:07:17,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 253.0) internal successors, (2024), 8 states have internal predecessors, (2024), 0 states have call successors, (0), 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 08:07:17,440 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 253.0) internal successors, (2024), 8 states have internal predecessors, (2024), 0 states have call successors, (0), 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 08:07:17,440 INFO L175 Difference]: Start difference. First operand has 51 places, 35 transitions, 187 flow. Second operand 7 states and 925 transitions. [2023-11-19 08:07:17,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 93 transitions, 661 flow [2023-11-19 08:07:17,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 93 transitions, 594 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-11-19 08:07:17,461 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 227 flow [2023-11-19 08:07:17,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=227, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2023-11-19 08:07:17,462 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 19 predicate places. [2023-11-19 08:07:17,462 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 227 flow [2023-11-19 08:07:17,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 124.375) internal successors, (995), 8 states have internal predecessors, (995), 0 states have call successors, (0), 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 08:07:17,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:17,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:17,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 08:07:17,464 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 2 more)] === [2023-11-19 08:07:17,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:17,464 INFO L85 PathProgramCache]: Analyzing trace with hash 99241858, now seen corresponding path program 2 times [2023-11-19 08:07:17,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:17,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340898180] [2023-11-19 08:07:17,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:17,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:17,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:19,112 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 08:07:19,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:19,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340898180] [2023-11-19 08:07:19,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340898180] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:19,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:19,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:07:19,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643492048] [2023-11-19 08:07:19,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:19,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:07:19,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:19,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:07:19,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:07:19,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 253 [2023-11-19 08:07:19,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 227 flow. Second operand has 8 states, 8 states have (on average 122.375) internal successors, (979), 8 states have internal predecessors, (979), 0 states have call successors, (0), 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 08:07:19,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:19,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 253 [2023-11-19 08:07:19,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:20,725 INFO L124 PetriNetUnfolderBase]: 3303/5259 cut-off events. [2023-11-19 08:07:20,725 INFO L125 PetriNetUnfolderBase]: For 7227/7275 co-relation queries the response was YES. [2023-11-19 08:07:20,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18799 conditions, 5259 events. 3303/5259 cut-off events. For 7227/7275 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 30657 event pairs, 1005 based on Foata normal form. 43/5270 useless extension candidates. Maximal degree in co-relation 18784. Up to 3287 conditions per place. [2023-11-19 08:07:20,768 INFO L140 encePairwiseOnDemand]: 242/253 looper letters, 68 selfloop transitions, 18 changer transitions 23/111 dead transitions. [2023-11-19 08:07:20,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 111 transitions, 798 flow [2023-11-19 08:07:20,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:07:20,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:07:20,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 906 transitions. [2023-11-19 08:07:20,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5115753811405985 [2023-11-19 08:07:20,774 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 906 transitions. [2023-11-19 08:07:20,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 906 transitions. [2023-11-19 08:07:20,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:20,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 906 transitions. [2023-11-19 08:07:20,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 129.42857142857142) internal successors, (906), 7 states have internal predecessors, (906), 0 states have call successors, (0), 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 08:07:20,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 253.0) internal successors, (2024), 8 states have internal predecessors, (2024), 0 states have call successors, (0), 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 08:07:20,785 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 253.0) internal successors, (2024), 8 states have internal predecessors, (2024), 0 states have call successors, (0), 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 08:07:20,785 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 227 flow. Second operand 7 states and 906 transitions. [2023-11-19 08:07:20,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 111 transitions, 798 flow [2023-11-19 08:07:20,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 111 transitions, 789 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-19 08:07:20,805 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 370 flow [2023-11-19 08:07:20,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=370, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2023-11-19 08:07:20,807 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 24 predicate places. [2023-11-19 08:07:20,807 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 370 flow [2023-11-19 08:07:20,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 122.375) internal successors, (979), 8 states have internal predecessors, (979), 0 states have call successors, (0), 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 08:07:20,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:20,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:20,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 08:07:20,808 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 2 more)] === [2023-11-19 08:07:20,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:20,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1579958242, now seen corresponding path program 3 times [2023-11-19 08:07:20,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:20,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915234864] [2023-11-19 08:07:20,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:20,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:22,786 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 08:07:22,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:22,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915234864] [2023-11-19 08:07:22,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915234864] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:22,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:22,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:07:22,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078362638] [2023-11-19 08:07:22,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:22,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:07:22,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:22,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:07:22,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:07:22,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 253 [2023-11-19 08:07:22,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 370 flow. Second operand has 8 states, 8 states have (on average 124.375) internal successors, (995), 8 states have internal predecessors, (995), 0 states have call successors, (0), 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 08:07:22,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:22,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 253 [2023-11-19 08:07:22,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:25,038 INFO L124 PetriNetUnfolderBase]: 4286/6977 cut-off events. [2023-11-19 08:07:25,038 INFO L125 PetriNetUnfolderBase]: For 17136/17200 co-relation queries the response was YES. [2023-11-19 08:07:25,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29033 conditions, 6977 events. 4286/6977 cut-off events. For 17136/17200 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 44922 event pairs, 1063 based on Foata normal form. 103/7047 useless extension candidates. Maximal degree in co-relation 29016. Up to 2804 conditions per place. [2023-11-19 08:07:25,079 INFO L140 encePairwiseOnDemand]: 243/253 looper letters, 95 selfloop transitions, 21 changer transitions 79/197 dead transitions. [2023-11-19 08:07:25,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 197 transitions, 1642 flow [2023-11-19 08:07:25,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 08:07:25,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 08:07:25,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1585 transitions. [2023-11-19 08:07:25,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5220685111989459 [2023-11-19 08:07:25,086 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1585 transitions. [2023-11-19 08:07:25,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1585 transitions. [2023-11-19 08:07:25,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:25,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1585 transitions. [2023-11-19 08:07:25,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 132.08333333333334) internal successors, (1585), 12 states have internal predecessors, (1585), 0 states have call successors, (0), 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 08:07:25,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 253.0) internal successors, (3289), 13 states have internal predecessors, (3289), 0 states have call successors, (0), 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 08:07:25,100 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 253.0) internal successors, (3289), 13 states have internal predecessors, (3289), 0 states have call successors, (0), 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 08:07:25,101 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 370 flow. Second operand 12 states and 1585 transitions. [2023-11-19 08:07:25,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 197 transitions, 1642 flow [2023-11-19 08:07:25,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 197 transitions, 1635 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-19 08:07:25,126 INFO L231 Difference]: Finished difference. Result has 77 places, 60 transitions, 488 flow [2023-11-19 08:07:25,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=488, PETRI_PLACES=77, PETRI_TRANSITIONS=60} [2023-11-19 08:07:25,127 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 39 predicate places. [2023-11-19 08:07:25,127 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 60 transitions, 488 flow [2023-11-19 08:07:25,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 124.375) internal successors, (995), 8 states have internal predecessors, (995), 0 states have call successors, (0), 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 08:07:25,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:25,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:25,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 08:07:25,128 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 2 more)] === [2023-11-19 08:07:25,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:25,129 INFO L85 PathProgramCache]: Analyzing trace with hash 364282074, now seen corresponding path program 4 times [2023-11-19 08:07:25,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:25,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260361230] [2023-11-19 08:07:25,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:25,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:25,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat