./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix030_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d64e7-206d-4db8-8203-9261109b7c77/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d64e7-206d-4db8-8203-9261109b7c77/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_2b4d64e7-206d-4db8-8203-9261109b7c77/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d64e7-206d-4db8-8203-9261109b7c77/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix030_power.oepc_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d64e7-206d-4db8-8203-9261109b7c77/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_2b4d64e7-206d-4db8-8203-9261109b7c77/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 a6d0914923ba77f2cbf67d52dc6ec759519359118cb2f8fd5f254f95bf2b938e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:44:11,266 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:44:11,381 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d64e7-206d-4db8-8203-9261109b7c77/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:44:11,391 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:44:11,392 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:44:11,434 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:44:11,435 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:44:11,436 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:44:11,437 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:44:11,442 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:44:11,443 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:44:11,443 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:44:11,444 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:44:11,446 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:44:11,446 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:44:11,447 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:44:11,447 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:44:11,447 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:44:11,448 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:44:11,448 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:44:11,449 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:44:11,449 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:44:11,450 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:44:11,452 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:44:11,452 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:44:11,453 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:44:11,453 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:44:11,454 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:44:11,454 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:44:11,455 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:44:11,456 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:44:11,456 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:44:11,457 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:44:11,457 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:44:11,457 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:44:11,457 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:44:11,458 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:44:11,458 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:44:11,458 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:44:11,458 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_2b4d64e7-206d-4db8-8203-9261109b7c77/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d64e7-206d-4db8-8203-9261109b7c77/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6d0914923ba77f2cbf67d52dc6ec759519359118cb2f8fd5f254f95bf2b938e [2023-11-19 07:44:11,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:44:11,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:44:11,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:44:11,837 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:44:11,838 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:44:11,839 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d64e7-206d-4db8-8203-9261109b7c77/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/mix030_power.oepc_pso.oepc_rmo.oepc.i [2023-11-19 07:44:14,966 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:44:15,240 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:44:15,240 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d64e7-206d-4db8-8203-9261109b7c77/sv-benchmarks/c/pthread-wmm/mix030_power.oepc_pso.oepc_rmo.oepc.i [2023-11-19 07:44:15,265 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d64e7-206d-4db8-8203-9261109b7c77/bin/uautomizer-verify-uCwYo4JHxu/data/824920210/3cc8aa3fe81f4bd084200cdb4c46bb34/FLAG73e095a0b [2023-11-19 07:44:15,280 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d64e7-206d-4db8-8203-9261109b7c77/bin/uautomizer-verify-uCwYo4JHxu/data/824920210/3cc8aa3fe81f4bd084200cdb4c46bb34 [2023-11-19 07:44:15,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:44:15,285 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:44:15,286 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:44:15,286 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:44:15,295 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:44:15,296 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:44:15" (1/1) ... [2023-11-19 07:44:15,298 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33b16a0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:15, skipping insertion in model container [2023-11-19 07:44:15,298 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:44:15" (1/1) ... [2023-11-19 07:44:15,372 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:44:15,560 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_2b4d64e7-206d-4db8-8203-9261109b7c77/sv-benchmarks/c/pthread-wmm/mix030_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2023-11-19 07:44:15,828 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:44:15,844 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:44:15,859 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_2b4d64e7-206d-4db8-8203-9261109b7c77/sv-benchmarks/c/pthread-wmm/mix030_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2023-11-19 07:44:15,954 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:44:15,992 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:44:15,993 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:44:16,001 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:44:16,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:16 WrapperNode [2023-11-19 07:44:16,002 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:44:16,003 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:44:16,003 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:44:16,004 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:44:16,012 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:16" (1/1) ... [2023-11-19 07:44:16,049 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:16" (1/1) ... [2023-11-19 07:44:16,107 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 142 [2023-11-19 07:44:16,109 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:44:16,110 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:44:16,110 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:44:16,111 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:44:16,121 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:16" (1/1) ... [2023-11-19 07:44:16,122 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:16" (1/1) ... [2023-11-19 07:44:16,138 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:16" (1/1) ... [2023-11-19 07:44:16,142 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:16" (1/1) ... [2023-11-19 07:44:16,152 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:16" (1/1) ... [2023-11-19 07:44:16,169 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:16" (1/1) ... [2023-11-19 07:44:16,172 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:16" (1/1) ... [2023-11-19 07:44:16,183 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:16" (1/1) ... [2023-11-19 07:44:16,187 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:44:16,188 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:44:16,188 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:44:16,191 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:44:16,192 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:16" (1/1) ... [2023-11-19 07:44:16,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:44:16,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d64e7-206d-4db8-8203-9261109b7c77/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:16,229 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d64e7-206d-4db8-8203-9261109b7c77/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:44:16,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d64e7-206d-4db8-8203-9261109b7c77/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:44:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:44:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:44:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:44:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:44:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:44:16,270 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:44:16,270 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:44:16,270 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:44:16,270 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:44:16,270 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:44:16,272 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:44:16,272 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-19 07:44:16,273 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-19 07:44:16,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:44:16,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:44:16,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:44:16,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:44:16,275 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:44:16,492 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:44:16,494 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:44:17,031 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:44:17,169 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:44:17,170 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:44:17,174 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:44:17 BoogieIcfgContainer [2023-11-19 07:44:17,174 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:44:17,176 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:44:17,176 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:44:17,179 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:44:17,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:44:15" (1/3) ... [2023-11-19 07:44:17,181 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330f91c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:44:17, skipping insertion in model container [2023-11-19 07:44:17,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:16" (2/3) ... [2023-11-19 07:44:17,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330f91c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:44:17, skipping insertion in model container [2023-11-19 07:44:17,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:44:17" (3/3) ... [2023-11-19 07:44:17,183 INFO L112 eAbstractionObserver]: Analyzing ICFG mix030_power.oepc_pso.oepc_rmo.oepc.i [2023-11-19 07:44:17,192 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:44:17,204 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:44:17,205 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 07:44:17,205 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:44:17,288 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:44:17,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 133 transitions, 282 flow [2023-11-19 07:44:17,417 INFO L124 PetriNetUnfolderBase]: 3/129 cut-off events. [2023-11-19 07:44:17,417 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:44:17,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 129 events. 3/129 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2023-11-19 07:44:17,426 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 133 transitions, 282 flow [2023-11-19 07:44:17,435 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 129 transitions, 270 flow [2023-11-19 07:44:17,439 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:44:17,454 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 129 transitions, 270 flow [2023-11-19 07:44:17,457 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 139 places, 129 transitions, 270 flow [2023-11-19 07:44:17,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 129 transitions, 270 flow [2023-11-19 07:44:17,497 INFO L124 PetriNetUnfolderBase]: 3/129 cut-off events. [2023-11-19 07:44:17,497 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:44:17,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 129 events. 3/129 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2023-11-19 07:44:17,507 INFO L119 LiptonReduction]: Number of co-enabled transitions 3560 [2023-11-19 07:44:22,515 INFO L134 LiptonReduction]: Checked pairs total: 9812 [2023-11-19 07:44:22,522 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-11-19 07:44:22,536 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:44:22,543 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;@435156c8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:44:22,544 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-19 07:44:22,547 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:44:22,547 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-19 07:44:22,547 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:44:22,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:22,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:44:22,549 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:44:22,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:22,554 INFO L85 PathProgramCache]: Analyzing trace with hash 560272, now seen corresponding path program 1 times [2023-11-19 07:44:22,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:22,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841374916] [2023-11-19 07:44:22,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:22,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:23,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:23,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:23,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841374916] [2023-11-19 07:44:23,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841374916] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:23,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:23,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:44:23,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175388130] [2023-11-19 07:44:23,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:23,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:44:23,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:23,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:44:23,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:44:23,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 246 [2023-11-19 07:44:23,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:23,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:23,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 246 [2023-11-19 07:44:23,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:24,589 INFO L124 PetriNetUnfolderBase]: 4903/6757 cut-off events. [2023-11-19 07:44:24,589 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-11-19 07:44:24,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13605 conditions, 6757 events. 4903/6757 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 32855 event pairs, 2535 based on Foata normal form. 0/6419 useless extension candidates. Maximal degree in co-relation 13593. Up to 5335 conditions per place. [2023-11-19 07:44:24,656 INFO L140 encePairwiseOnDemand]: 242/246 looper letters, 41 selfloop transitions, 2 changer transitions 2/49 dead transitions. [2023-11-19 07:44:24,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 49 transitions, 209 flow [2023-11-19 07:44:24,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:44:24,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:44:24,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 396 transitions. [2023-11-19 07:44:24,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5365853658536586 [2023-11-19 07:44:24,675 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 396 transitions. [2023-11-19 07:44:24,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 396 transitions. [2023-11-19 07:44:24,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:24,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 396 transitions. [2023-11-19 07:44:24,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:24,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:24,700 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:24,703 INFO L175 Difference]: Start difference. First operand has 43 places, 31 transitions, 74 flow. Second operand 3 states and 396 transitions. [2023-11-19 07:44:24,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 49 transitions, 209 flow [2023-11-19 07:44:24,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 49 transitions, 202 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:44:24,712 INFO L231 Difference]: Finished difference. Result has 40 places, 28 transitions, 68 flow [2023-11-19 07:44:24,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=40, PETRI_TRANSITIONS=28} [2023-11-19 07:44:24,719 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2023-11-19 07:44:24,719 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 28 transitions, 68 flow [2023-11-19 07:44:24,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:24,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:24,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:24,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:44:24,721 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:44:24,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:24,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1667915432, now seen corresponding path program 1 times [2023-11-19 07:44:24,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:24,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824934153] [2023-11-19 07:44:24,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:24,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:25,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:25,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:25,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824934153] [2023-11-19 07:44:25,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824934153] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:25,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:25,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:44:25,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275995988] [2023-11-19 07:44:25,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:25,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:44:25,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:25,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:44:25,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:44:25,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 246 [2023-11-19 07:44:25,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 28 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:25,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:25,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 246 [2023-11-19 07:44:25,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:28,848 INFO L124 PetriNetUnfolderBase]: 16443/22329 cut-off events. [2023-11-19 07:44:28,848 INFO L125 PetriNetUnfolderBase]: For 1116/1116 co-relation queries the response was YES. [2023-11-19 07:44:28,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46175 conditions, 22329 events. 16443/22329 cut-off events. For 1116/1116 co-relation queries the response was YES. Maximal size of possible extension queue 733. Compared 116625 event pairs, 6427 based on Foata normal form. 704/23033 useless extension candidates. Maximal degree in co-relation 46165. Up to 11662 conditions per place. [2023-11-19 07:44:29,065 INFO L140 encePairwiseOnDemand]: 236/246 looper letters, 42 selfloop transitions, 9 changer transitions 0/51 dead transitions. [2023-11-19 07:44:29,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 51 transitions, 222 flow [2023-11-19 07:44:29,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:44:29,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:44:29,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2023-11-19 07:44:29,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.497289972899729 [2023-11-19 07:44:29,072 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2023-11-19 07:44:29,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2023-11-19 07:44:29,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:29,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2023-11-19 07:44:29,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:29,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:29,089 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:29,090 INFO L175 Difference]: Start difference. First operand has 40 places, 28 transitions, 68 flow. Second operand 3 states and 367 transitions. [2023-11-19 07:44:29,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 51 transitions, 222 flow [2023-11-19 07:44:29,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 51 transitions, 216 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:44:29,096 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 134 flow [2023-11-19 07:44:29,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2023-11-19 07:44:29,104 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -2 predicate places. [2023-11-19 07:44:29,104 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 134 flow [2023-11-19 07:44:29,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:29,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:29,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:29,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:44:29,106 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:44:29,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:29,110 INFO L85 PathProgramCache]: Analyzing trace with hash -165771743, now seen corresponding path program 1 times [2023-11-19 07:44:29,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:29,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961352517] [2023-11-19 07:44:29,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:29,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:29,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:29,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:29,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961352517] [2023-11-19 07:44:29,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961352517] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:29,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:29,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:44:29,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700110270] [2023-11-19 07:44:29,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:29,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:44:29,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:29,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:44:29,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:44:29,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 246 [2023-11-19 07:44:29,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:29,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:29,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 246 [2023-11-19 07:44:29,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:32,426 INFO L124 PetriNetUnfolderBase]: 16051/21804 cut-off events. [2023-11-19 07:44:32,427 INFO L125 PetriNetUnfolderBase]: For 8376/8376 co-relation queries the response was YES. [2023-11-19 07:44:32,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56809 conditions, 21804 events. 16051/21804 cut-off events. For 8376/8376 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 114836 event pairs, 1642 based on Foata normal form. 55/21859 useless extension candidates. Maximal degree in co-relation 56797. Up to 10723 conditions per place. [2023-11-19 07:44:32,569 INFO L140 encePairwiseOnDemand]: 236/246 looper letters, 61 selfloop transitions, 13 changer transitions 0/74 dead transitions. [2023-11-19 07:44:32,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 74 transitions, 406 flow [2023-11-19 07:44:32,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:44:32,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:44:32,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 488 transitions. [2023-11-19 07:44:32,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4959349593495935 [2023-11-19 07:44:32,573 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 488 transitions. [2023-11-19 07:44:32,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 488 transitions. [2023-11-19 07:44:32,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:32,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 488 transitions. [2023-11-19 07:44:32,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:32,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 246.0) internal successors, (1230), 5 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:32,580 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 246.0) internal successors, (1230), 5 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:32,580 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 134 flow. Second operand 4 states and 488 transitions. [2023-11-19 07:44:32,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 74 transitions, 406 flow [2023-11-19 07:44:32,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 74 transitions, 374 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:44:32,609 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 220 flow [2023-11-19 07:44:32,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=45, PETRI_TRANSITIONS=45} [2023-11-19 07:44:32,611 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2023-11-19 07:44:32,611 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 220 flow [2023-11-19 07:44:32,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:32,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:32,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:32,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:44:32,613 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:44:32,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:32,613 INFO L85 PathProgramCache]: Analyzing trace with hash -165772301, now seen corresponding path program 1 times [2023-11-19 07:44:32,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:32,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516345593] [2023-11-19 07:44:32,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:32,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:32,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:32,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:32,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:32,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516345593] [2023-11-19 07:44:32,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516345593] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:32,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:32,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:44:32,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408882939] [2023-11-19 07:44:32,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:32,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:44:32,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:32,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:44:32,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:44:32,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 246 [2023-11-19 07:44:32,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:32,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:32,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 246 [2023-11-19 07:44:32,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:35,653 INFO L124 PetriNetUnfolderBase]: 12935/18415 cut-off events. [2023-11-19 07:44:35,653 INFO L125 PetriNetUnfolderBase]: For 16701/17147 co-relation queries the response was YES. [2023-11-19 07:44:35,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50780 conditions, 18415 events. 12935/18415 cut-off events. For 16701/17147 co-relation queries the response was YES. Maximal size of possible extension queue 766. Compared 107129 event pairs, 5453 based on Foata normal form. 408/18579 useless extension candidates. Maximal degree in co-relation 50765. Up to 16135 conditions per place. [2023-11-19 07:44:35,795 INFO L140 encePairwiseOnDemand]: 242/246 looper letters, 55 selfloop transitions, 7 changer transitions 0/71 dead transitions. [2023-11-19 07:44:35,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 71 transitions, 458 flow [2023-11-19 07:44:35,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:44:35,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:44:35,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 386 transitions. [2023-11-19 07:44:35,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5230352303523035 [2023-11-19 07:44:35,799 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 386 transitions. [2023-11-19 07:44:35,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 386 transitions. [2023-11-19 07:44:35,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:35,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 386 transitions. [2023-11-19 07:44:35,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:35,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:35,805 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:35,806 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 220 flow. Second operand 3 states and 386 transitions. [2023-11-19 07:44:35,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 71 transitions, 458 flow [2023-11-19 07:44:35,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 71 transitions, 458 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:44:35,848 INFO L231 Difference]: Finished difference. Result has 48 places, 51 transitions, 291 flow [2023-11-19 07:44:35,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=291, PETRI_PLACES=48, PETRI_TRANSITIONS=51} [2023-11-19 07:44:35,850 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 5 predicate places. [2023-11-19 07:44:35,850 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 51 transitions, 291 flow [2023-11-19 07:44:35,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:35,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:35,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:35,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:44:35,851 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:44:35,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:35,852 INFO L85 PathProgramCache]: Analyzing trace with hash -843958198, now seen corresponding path program 1 times [2023-11-19 07:44:35,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:35,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436397286] [2023-11-19 07:44:35,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:35,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:36,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:36,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:36,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436397286] [2023-11-19 07:44:36,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436397286] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:36,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:36,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:44:36,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622308714] [2023-11-19 07:44:36,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:36,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:44:36,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:36,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:44:36,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:44:36,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 246 [2023-11-19 07:44:36,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 51 transitions, 291 flow. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:36,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:36,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 246 [2023-11-19 07:44:36,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:38,110 INFO L124 PetriNetUnfolderBase]: 11821/16732 cut-off events. [2023-11-19 07:44:38,111 INFO L125 PetriNetUnfolderBase]: For 21047/21898 co-relation queries the response was YES. [2023-11-19 07:44:38,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47539 conditions, 16732 events. 11821/16732 cut-off events. For 21047/21898 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 93796 event pairs, 3225 based on Foata normal form. 500/17103 useless extension candidates. Maximal degree in co-relation 47521. Up to 11528 conditions per place. [2023-11-19 07:44:38,254 INFO L140 encePairwiseOnDemand]: 243/246 looper letters, 53 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2023-11-19 07:44:38,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 69 transitions, 495 flow [2023-11-19 07:44:38,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:44:38,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:44:38,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2023-11-19 07:44:38,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5176151761517616 [2023-11-19 07:44:38,261 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2023-11-19 07:44:38,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2023-11-19 07:44:38,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:38,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2023-11-19 07:44:38,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:38,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:38,267 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:38,267 INFO L175 Difference]: Start difference. First operand has 48 places, 51 transitions, 291 flow. Second operand 3 states and 382 transitions. [2023-11-19 07:44:38,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 69 transitions, 495 flow [2023-11-19 07:44:38,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 69 transitions, 486 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:44:38,307 INFO L231 Difference]: Finished difference. Result has 50 places, 51 transitions, 298 flow [2023-11-19 07:44:38,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=50, PETRI_TRANSITIONS=51} [2023-11-19 07:44:38,310 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2023-11-19 07:44:38,311 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 51 transitions, 298 flow [2023-11-19 07:44:38,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:38,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:38,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:38,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:44:38,312 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:44:38,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:38,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1689388413, now seen corresponding path program 1 times [2023-11-19 07:44:38,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:38,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301820392] [2023-11-19 07:44:38,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:38,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:38,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:38,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:38,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:38,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301820392] [2023-11-19 07:44:38,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301820392] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:38,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:38,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:44:38,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927668198] [2023-11-19 07:44:38,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:38,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:44:38,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:38,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:44:38,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:44:38,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 246 [2023-11-19 07:44:38,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 51 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:38,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:38,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 246 [2023-11-19 07:44:38,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:42,169 INFO L124 PetriNetUnfolderBase]: 16916/24033 cut-off events. [2023-11-19 07:44:42,170 INFO L125 PetriNetUnfolderBase]: For 28760/30006 co-relation queries the response was YES. [2023-11-19 07:44:42,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66867 conditions, 24033 events. 16916/24033 cut-off events. For 28760/30006 co-relation queries the response was YES. Maximal size of possible extension queue 1025. Compared 147730 event pairs, 6644 based on Foata normal form. 899/24390 useless extension candidates. Maximal degree in co-relation 66847. Up to 12726 conditions per place. [2023-11-19 07:44:42,357 INFO L140 encePairwiseOnDemand]: 243/246 looper letters, 52 selfloop transitions, 6 changer transitions 0/69 dead transitions. [2023-11-19 07:44:42,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 69 transitions, 468 flow [2023-11-19 07:44:42,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:44:42,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:44:42,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 386 transitions. [2023-11-19 07:44:42,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5230352303523035 [2023-11-19 07:44:42,365 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 386 transitions. [2023-11-19 07:44:42,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 386 transitions. [2023-11-19 07:44:42,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:42,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 386 transitions. [2023-11-19 07:44:42,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:42,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:42,373 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:42,373 INFO L175 Difference]: Start difference. First operand has 50 places, 51 transitions, 298 flow. Second operand 3 states and 386 transitions. [2023-11-19 07:44:42,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 69 transitions, 468 flow [2023-11-19 07:44:42,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 69 transitions, 460 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:44:42,509 INFO L231 Difference]: Finished difference. Result has 51 places, 51 transitions, 310 flow [2023-11-19 07:44:42,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=310, PETRI_PLACES=51, PETRI_TRANSITIONS=51} [2023-11-19 07:44:42,512 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2023-11-19 07:44:42,512 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 51 transitions, 310 flow [2023-11-19 07:44:42,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:42,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:42,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:42,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:44:42,514 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:44:42,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:42,514 INFO L85 PathProgramCache]: Analyzing trace with hash 322209618, now seen corresponding path program 1 times [2023-11-19 07:44:42,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:42,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223142057] [2023-11-19 07:44:42,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:42,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:42,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:42,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:42,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223142057] [2023-11-19 07:44:42,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223142057] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:42,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:42,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:44:42,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410660654] [2023-11-19 07:44:42,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:42,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:44:42,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:42,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:44:42,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:44:42,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 246 [2023-11-19 07:44:42,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 51 transitions, 310 flow. Second operand has 4 states, 4 states have (on average 110.5) internal successors, (442), 4 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:42,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:42,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 246 [2023-11-19 07:44:42,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:45,159 INFO L124 PetriNetUnfolderBase]: 12959/19272 cut-off events. [2023-11-19 07:44:45,160 INFO L125 PetriNetUnfolderBase]: For 24575/26704 co-relation queries the response was YES. [2023-11-19 07:44:45,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52673 conditions, 19272 events. 12959/19272 cut-off events. For 24575/26704 co-relation queries the response was YES. Maximal size of possible extension queue 1038. Compared 128619 event pairs, 2029 based on Foata normal form. 2182/21083 useless extension candidates. Maximal degree in co-relation 52653. Up to 11791 conditions per place. [2023-11-19 07:44:45,289 INFO L140 encePairwiseOnDemand]: 239/246 looper letters, 106 selfloop transitions, 10 changer transitions 0/131 dead transitions. [2023-11-19 07:44:45,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 131 transitions, 960 flow [2023-11-19 07:44:45,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:44:45,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:44:45,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 607 transitions. [2023-11-19 07:44:45,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49349593495934957 [2023-11-19 07:44:45,295 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 607 transitions. [2023-11-19 07:44:45,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 607 transitions. [2023-11-19 07:44:45,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:45,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 607 transitions. [2023-11-19 07:44:45,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 121.4) internal successors, (607), 5 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:45,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 246.0) internal successors, (1476), 6 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:45,303 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 246.0) internal successors, (1476), 6 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:45,303 INFO L175 Difference]: Start difference. First operand has 51 places, 51 transitions, 310 flow. Second operand 5 states and 607 transitions. [2023-11-19 07:44:45,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 131 transitions, 960 flow [2023-11-19 07:44:45,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 131 transitions, 940 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-19 07:44:45,334 INFO L231 Difference]: Finished difference. Result has 57 places, 60 transitions, 377 flow [2023-11-19 07:44:45,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=377, PETRI_PLACES=57, PETRI_TRANSITIONS=60} [2023-11-19 07:44:45,335 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2023-11-19 07:44:45,335 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 60 transitions, 377 flow [2023-11-19 07:44:45,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.5) internal successors, (442), 4 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:45,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:45,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:45,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:44:45,337 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:44:45,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:45,337 INFO L85 PathProgramCache]: Analyzing trace with hash -14239391, now seen corresponding path program 1 times [2023-11-19 07:44:45,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:45,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145719692] [2023-11-19 07:44:45,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:45,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:45,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:45,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:45,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145719692] [2023-11-19 07:44:45,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145719692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:45,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:45,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:44:45,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087585636] [2023-11-19 07:44:45,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:45,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:44:45,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:45,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:44:45,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:44:45,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 246 [2023-11-19 07:44:45,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 60 transitions, 377 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:45,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:45,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 246 [2023-11-19 07:44:45,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:49,225 INFO L124 PetriNetUnfolderBase]: 20893/31127 cut-off events. [2023-11-19 07:44:49,225 INFO L125 PetriNetUnfolderBase]: For 52412/54401 co-relation queries the response was YES. [2023-11-19 07:44:49,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107285 conditions, 31127 events. 20893/31127 cut-off events. For 52412/54401 co-relation queries the response was YES. Maximal size of possible extension queue 1561. Compared 219262 event pairs, 10432 based on Foata normal form. 1173/31685 useless extension candidates. Maximal degree in co-relation 107261. Up to 16097 conditions per place. [2023-11-19 07:44:49,419 INFO L140 encePairwiseOnDemand]: 243/246 looper letters, 70 selfloop transitions, 8 changer transitions 8/94 dead transitions. [2023-11-19 07:44:49,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 94 transitions, 719 flow [2023-11-19 07:44:49,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:44:49,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:44:49,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2023-11-19 07:44:49,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5257452574525745 [2023-11-19 07:44:49,422 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 388 transitions. [2023-11-19 07:44:49,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 388 transitions. [2023-11-19 07:44:49,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:49,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 388 transitions. [2023-11-19 07:44:49,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:49,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:49,426 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:49,426 INFO L175 Difference]: Start difference. First operand has 57 places, 60 transitions, 377 flow. Second operand 3 states and 388 transitions. [2023-11-19 07:44:49,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 94 transitions, 719 flow [2023-11-19 07:44:49,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 94 transitions, 710 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:44:49,608 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 374 flow [2023-11-19 07:44:49,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=374, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2023-11-19 07:44:49,609 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 16 predicate places. [2023-11-19 07:44:49,609 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 374 flow [2023-11-19 07:44:49,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:49,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:49,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:49,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:44:49,610 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:44:49,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:49,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1957272959, now seen corresponding path program 1 times [2023-11-19 07:44:49,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:49,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13365430] [2023-11-19 07:44:49,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:49,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:49,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:49,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:49,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13365430] [2023-11-19 07:44:49,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13365430] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:49,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:49,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:44:49,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432767608] [2023-11-19 07:44:49,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:49,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:44:49,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:49,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:44:49,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:44:49,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 246 [2023-11-19 07:44:49,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 374 flow. Second operand has 5 states, 5 states have (on average 110.2) internal successors, (551), 5 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:49,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:49,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 246 [2023-11-19 07:44:49,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:53,621 INFO L124 PetriNetUnfolderBase]: 15931/24113 cut-off events. [2023-11-19 07:44:53,621 INFO L125 PetriNetUnfolderBase]: For 37548/40780 co-relation queries the response was YES. [2023-11-19 07:44:53,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80721 conditions, 24113 events. 15931/24113 cut-off events. For 37548/40780 co-relation queries the response was YES. Maximal size of possible extension queue 1274. Compared 172968 event pairs, 1478 based on Foata normal form. 2932/26382 useless extension candidates. Maximal degree in co-relation 80696. Up to 8033 conditions per place. [2023-11-19 07:44:53,748 INFO L140 encePairwiseOnDemand]: 239/246 looper letters, 143 selfloop transitions, 18 changer transitions 3/177 dead transitions. [2023-11-19 07:44:53,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 177 transitions, 1427 flow [2023-11-19 07:44:53,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:44:53,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:44:53,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 851 transitions. [2023-11-19 07:44:53,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49419279907084784 [2023-11-19 07:44:53,752 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 851 transitions. [2023-11-19 07:44:53,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 851 transitions. [2023-11-19 07:44:53,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:53,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 851 transitions. [2023-11-19 07:44:53,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 121.57142857142857) internal successors, (851), 7 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:53,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 246.0) internal successors, (1968), 8 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:53,762 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 246.0) internal successors, (1968), 8 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:53,762 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 374 flow. Second operand 7 states and 851 transitions. [2023-11-19 07:44:53,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 177 transitions, 1427 flow [2023-11-19 07:44:53,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 177 transitions, 1368 flow, removed 18 selfloop flow, removed 1 redundant places. [2023-11-19 07:44:53,962 INFO L231 Difference]: Finished difference. Result has 67 places, 66 transitions, 491 flow [2023-11-19 07:44:53,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=491, PETRI_PLACES=67, PETRI_TRANSITIONS=66} [2023-11-19 07:44:53,963 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 24 predicate places. [2023-11-19 07:44:53,963 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 66 transitions, 491 flow [2023-11-19 07:44:53,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 110.2) internal successors, (551), 5 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:53,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:53,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:53,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:44:53,964 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:44:53,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:53,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1908112947, now seen corresponding path program 1 times [2023-11-19 07:44:53,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:53,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360637878] [2023-11-19 07:44:53,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:53,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:54,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:54,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:54,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:54,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360637878] [2023-11-19 07:44:54,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360637878] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:54,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:54,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:44:54,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112585091] [2023-11-19 07:44:54,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:54,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:44:54,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:54,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:44:54,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:44:54,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 246 [2023-11-19 07:44:54,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 491 flow. Second operand has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:54,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:54,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 246 [2023-11-19 07:44:54,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:58,316 INFO L124 PetriNetUnfolderBase]: 14831/22470 cut-off events. [2023-11-19 07:44:58,316 INFO L125 PetriNetUnfolderBase]: For 49139/52160 co-relation queries the response was YES. [2023-11-19 07:44:58,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87459 conditions, 22470 events. 14831/22470 cut-off events. For 49139/52160 co-relation queries the response was YES. Maximal size of possible extension queue 1254. Compared 160652 event pairs, 1193 based on Foata normal form. 1899/23726 useless extension candidates. Maximal degree in co-relation 87430. Up to 7653 conditions per place. [2023-11-19 07:44:58,444 INFO L140 encePairwiseOnDemand]: 239/246 looper letters, 142 selfloop transitions, 27 changer transitions 30/212 dead transitions. [2023-11-19 07:44:58,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 212 transitions, 1749 flow [2023-11-19 07:44:58,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:44:58,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:44:58,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1094 transitions. [2023-11-19 07:44:58,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4941282746160795 [2023-11-19 07:44:58,450 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1094 transitions. [2023-11-19 07:44:58,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1094 transitions. [2023-11-19 07:44:58,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:58,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1094 transitions. [2023-11-19 07:44:58,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 121.55555555555556) internal successors, (1094), 9 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:58,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 246.0) internal successors, (2460), 10 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:58,461 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 246.0) internal successors, (2460), 10 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:58,462 INFO L175 Difference]: Start difference. First operand has 67 places, 66 transitions, 491 flow. Second operand 9 states and 1094 transitions. [2023-11-19 07:44:58,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 212 transitions, 1749 flow [2023-11-19 07:45:01,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 212 transitions, 1700 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-11-19 07:45:01,740 INFO L231 Difference]: Finished difference. Result has 75 places, 74 transitions, 608 flow [2023-11-19 07:45:01,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=608, PETRI_PLACES=75, PETRI_TRANSITIONS=74} [2023-11-19 07:45:01,741 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 32 predicate places. [2023-11-19 07:45:01,741 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 74 transitions, 608 flow [2023-11-19 07:45:01,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:01,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:01,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:01,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:45:01,742 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:45:01,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:01,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1025508381, now seen corresponding path program 1 times [2023-11-19 07:45:01,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:01,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163319657] [2023-11-19 07:45:01,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:01,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:02,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:02,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:02,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163319657] [2023-11-19 07:45:02,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163319657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:02,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:02,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:45:02,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729856316] [2023-11-19 07:45:02,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:02,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:45:02,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:02,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:45:02,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:45:02,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 246 [2023-11-19 07:45:02,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 74 transitions, 608 flow. Second operand has 7 states, 7 states have (on average 110.0) internal successors, (770), 7 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:02,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:02,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 246 [2023-11-19 07:45:02,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:05,648 INFO L124 PetriNetUnfolderBase]: 14472/21903 cut-off events. [2023-11-19 07:45:05,648 INFO L125 PetriNetUnfolderBase]: For 54119/57067 co-relation queries the response was YES. [2023-11-19 07:45:05,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86210 conditions, 21903 events. 14472/21903 cut-off events. For 54119/57067 co-relation queries the response was YES. Maximal size of possible extension queue 1252. Compared 157277 event pairs, 1144 based on Foata normal form. 1402/22663 useless extension candidates. Maximal degree in co-relation 86178. Up to 5251 conditions per place. [2023-11-19 07:45:05,784 INFO L140 encePairwiseOnDemand]: 239/246 looper letters, 83 selfloop transitions, 24 changer transitions 93/207 dead transitions. [2023-11-19 07:45:05,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 207 transitions, 1736 flow [2023-11-19 07:45:05,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:45:05,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-19 07:45:05,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1309 transitions. [2023-11-19 07:45:05,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.483739837398374 [2023-11-19 07:45:05,791 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1309 transitions. [2023-11-19 07:45:05,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1309 transitions. [2023-11-19 07:45:05,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:05,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1309 transitions. [2023-11-19 07:45:05,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:05,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 246.0) internal successors, (2952), 12 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:05,805 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 246.0) internal successors, (2952), 12 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:05,805 INFO L175 Difference]: Start difference. First operand has 75 places, 74 transitions, 608 flow. Second operand 11 states and 1309 transitions. [2023-11-19 07:45:05,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 207 transitions, 1736 flow