./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix044_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_f7e69343-faf6-47a0-89bc-03c0b049b66b/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7e69343-faf6-47a0-89bc-03c0b049b66b/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_f7e69343-faf6-47a0-89bc-03c0b049b66b/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7e69343-faf6-47a0-89bc-03c0b049b66b/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix044_power.oepc_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7e69343-faf6-47a0-89bc-03c0b049b66b/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_f7e69343-faf6-47a0-89bc-03c0b049b66b/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 40f0a1ff0b59c9897722e1cc89a9065b61569e5c28581990c7adb84261d57e0b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:43:01,106 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:43:01,188 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7e69343-faf6-47a0-89bc-03c0b049b66b/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:43:01,193 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:43:01,194 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:43:01,221 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:43:01,222 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:43:01,223 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:43:01,224 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:43:01,225 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:43:01,226 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:43:01,226 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:43:01,227 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:43:01,228 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:43:01,228 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:43:01,229 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:43:01,229 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:43:01,230 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:43:01,231 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:43:01,231 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:43:01,232 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:43:01,239 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:43:01,240 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:43:01,240 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:43:01,241 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:43:01,241 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:43:01,242 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:43:01,243 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:43:01,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:43:01,244 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:43:01,245 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:43:01,246 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:43:01,246 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:43:01,247 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:43:01,247 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:43:01,248 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:43:01,248 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:43:01,248 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:43:01,249 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:43:01,249 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_f7e69343-faf6-47a0-89bc-03c0b049b66b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7e69343-faf6-47a0-89bc-03c0b049b66b/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40f0a1ff0b59c9897722e1cc89a9065b61569e5c28581990c7adb84261d57e0b [2023-11-19 07:43:01,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:43:01,602 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:43:01,605 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:43:01,607 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:43:01,608 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:43:01,609 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7e69343-faf6-47a0-89bc-03c0b049b66b/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/mix044_power.oepc_pso.oepc_rmo.oepc.i [2023-11-19 07:43:04,986 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:43:05,271 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:43:05,272 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7e69343-faf6-47a0-89bc-03c0b049b66b/sv-benchmarks/c/pthread-wmm/mix044_power.oepc_pso.oepc_rmo.oepc.i [2023-11-19 07:43:05,303 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7e69343-faf6-47a0-89bc-03c0b049b66b/bin/uautomizer-verify-uCwYo4JHxu/data/a76097287/f3cc4c4a87544092b0151cf01558b7d6/FLAGbde7275ec [2023-11-19 07:43:05,320 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7e69343-faf6-47a0-89bc-03c0b049b66b/bin/uautomizer-verify-uCwYo4JHxu/data/a76097287/f3cc4c4a87544092b0151cf01558b7d6 [2023-11-19 07:43:05,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:43:05,325 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:43:05,327 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:43:05,327 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:43:05,335 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:43:05,338 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:43:05" (1/1) ... [2023-11-19 07:43:05,340 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@181a60f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:05, skipping insertion in model container [2023-11-19 07:43:05,340 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:43:05" (1/1) ... [2023-11-19 07:43:05,429 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:43:05,644 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_f7e69343-faf6-47a0-89bc-03c0b049b66b/sv-benchmarks/c/pthread-wmm/mix044_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2023-11-19 07:43:05,849 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:43:05,868 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:43:05,885 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_f7e69343-faf6-47a0-89bc-03c0b049b66b/sv-benchmarks/c/pthread-wmm/mix044_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2023-11-19 07:43:05,988 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:43:06,040 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:43:06,040 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:43:06,048 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:43:06,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:06 WrapperNode [2023-11-19 07:43:06,049 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:43:06,050 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:43:06,050 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:43:06,051 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:43:06,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:06" (1/1) ... [2023-11-19 07:43:06,094 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:06" (1/1) ... [2023-11-19 07:43:06,136 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 144 [2023-11-19 07:43:06,139 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:43:06,140 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:43:06,140 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:43:06,140 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:43:06,150 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:06" (1/1) ... [2023-11-19 07:43:06,151 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:06" (1/1) ... [2023-11-19 07:43:06,169 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:06" (1/1) ... [2023-11-19 07:43:06,172 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:06" (1/1) ... [2023-11-19 07:43:06,186 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:06" (1/1) ... [2023-11-19 07:43:06,206 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:06" (1/1) ... [2023-11-19 07:43:06,209 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:06" (1/1) ... [2023-11-19 07:43:06,211 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:06" (1/1) ... [2023-11-19 07:43:06,226 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:43:06,227 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:43:06,227 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:43:06,227 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:43:06,228 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:06" (1/1) ... [2023-11-19 07:43:06,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:43:06,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7e69343-faf6-47a0-89bc-03c0b049b66b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:06,266 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7e69343-faf6-47a0-89bc-03c0b049b66b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:43:06,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7e69343-faf6-47a0-89bc-03c0b049b66b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:43:06,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:43:06,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:43:06,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:43:06,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:43:06,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:43:06,313 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:43:06,313 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:43:06,313 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:43:06,314 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:43:06,314 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:43:06,315 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:43:06,316 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-19 07:43:06,316 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-19 07:43:06,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:43:06,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:43:06,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:43:06,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:43:06,319 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 07:43:06,490 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:43:06,492 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:43:06,963 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:43:07,190 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:43:07,191 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:43:07,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:43:07 BoogieIcfgContainer [2023-11-19 07:43:07,201 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:43:07,205 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:43:07,205 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:43:07,208 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:43:07,210 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:43:05" (1/3) ... [2023-11-19 07:43:07,211 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49369bd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:43:07, skipping insertion in model container [2023-11-19 07:43:07,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:06" (2/3) ... [2023-11-19 07:43:07,213 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49369bd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:43:07, skipping insertion in model container [2023-11-19 07:43:07,213 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:43:07" (3/3) ... [2023-11-19 07:43:07,215 INFO L112 eAbstractionObserver]: Analyzing ICFG mix044_power.oepc_pso.oepc_rmo.oepc.i [2023-11-19 07:43:07,225 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:43:07,238 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:43:07,239 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 07:43:07,239 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:43:07,342 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:43:07,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 136 transitions, 288 flow [2023-11-19 07:43:07,503 INFO L124 PetriNetUnfolderBase]: 3/132 cut-off events. [2023-11-19 07:43:07,503 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:43:07,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 132 events. 3/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 75 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2023-11-19 07:43:07,512 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 136 transitions, 288 flow [2023-11-19 07:43:07,523 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 132 transitions, 276 flow [2023-11-19 07:43:07,528 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:43:07,560 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 142 places, 132 transitions, 276 flow [2023-11-19 07:43:07,563 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 142 places, 132 transitions, 276 flow [2023-11-19 07:43:07,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 132 transitions, 276 flow [2023-11-19 07:43:07,666 INFO L124 PetriNetUnfolderBase]: 3/132 cut-off events. [2023-11-19 07:43:07,666 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:43:07,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 132 events. 3/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 75 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2023-11-19 07:43:07,672 INFO L119 LiptonReduction]: Number of co-enabled transitions 3676 [2023-11-19 07:43:12,868 INFO L134 LiptonReduction]: Checked pairs total: 8835 [2023-11-19 07:43:12,868 INFO L136 LiptonReduction]: Total number of compositions: 116 [2023-11-19 07:43:12,884 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:43:12,891 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;@1adc9d5a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:43:12,891 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-19 07:43:12,894 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:43:12,894 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-19 07:43:12,895 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:43:12,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:12,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:43:12,896 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 07:43:12,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:12,901 INFO L85 PathProgramCache]: Analyzing trace with hash 569196, now seen corresponding path program 1 times [2023-11-19 07:43:12,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:12,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130520133] [2023-11-19 07:43:12,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:12,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:13,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:13,356 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 07:43:13,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:13,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130520133] [2023-11-19 07:43:13,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130520133] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:13,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:13,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:43:13,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231480779] [2023-11-19 07:43:13,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:13,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:43:13,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:13,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:43:13,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:43:13,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 252 [2023-11-19 07:43:13,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states 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 07:43:13,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:13,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 252 [2023-11-19 07:43:13,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:15,029 INFO L124 PetriNetUnfolderBase]: 5879/8495 cut-off events. [2023-11-19 07:43:15,030 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-11-19 07:43:15,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16639 conditions, 8495 events. 5879/8495 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 50278 event pairs, 1079 based on Foata normal form. 0/8107 useless extension candidates. Maximal degree in co-relation 16627. Up to 6367 conditions per place. [2023-11-19 07:43:15,107 INFO L140 encePairwiseOnDemand]: 248/252 looper letters, 43 selfloop transitions, 2 changer transitions 2/50 dead transitions. [2023-11-19 07:43:15,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 50 transitions, 215 flow [2023-11-19 07:43:15,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:43:15,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:43:15,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2023-11-19 07:43:15,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5383597883597884 [2023-11-19 07:43:15,131 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions. [2023-11-19 07:43:15,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions. [2023-11-19 07:43:15,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:15,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions. [2023-11-19 07:43:15,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states 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 07:43:15,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 07:43:15,155 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 07:43:15,157 INFO L175 Difference]: Start difference. First operand has 43 places, 31 transitions, 74 flow. Second operand 3 states and 407 transitions. [2023-11-19 07:43:15,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 50 transitions, 215 flow [2023-11-19 07:43:15,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 208 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:43:15,166 INFO L231 Difference]: Finished difference. Result has 40 places, 28 transitions, 68 flow [2023-11-19 07:43:15,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, 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 07:43:15,175 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2023-11-19 07:43:15,175 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 28 transitions, 68 flow [2023-11-19 07:43:15,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states 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 07:43:15,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:15,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:15,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:43:15,177 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 07:43:15,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:15,179 INFO L85 PathProgramCache]: Analyzing trace with hash 408597325, now seen corresponding path program 1 times [2023-11-19 07:43:15,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:15,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528751558] [2023-11-19 07:43:15,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:15,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:15,635 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 07:43:15,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:15,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528751558] [2023-11-19 07:43:15,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528751558] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:15,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:15,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:43:15,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405791365] [2023-11-19 07:43:15,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:15,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:43:15,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:15,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:43:15,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:43:15,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 252 [2023-11-19 07:43:15,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 28 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states 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 07:43:15,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:15,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 252 [2023-11-19 07:43:15,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:19,250 INFO L124 PetriNetUnfolderBase]: 16407/22321 cut-off events. [2023-11-19 07:43:19,250 INFO L125 PetriNetUnfolderBase]: For 1028/1028 co-relation queries the response was YES. [2023-11-19 07:43:19,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46179 conditions, 22321 events. 16407/22321 cut-off events. For 1028/1028 co-relation queries the response was YES. Maximal size of possible extension queue 730. Compared 117743 event pairs, 5637 based on Foata normal form. 634/22955 useless extension candidates. Maximal degree in co-relation 46169. Up to 13398 conditions per place. [2023-11-19 07:43:19,404 INFO L140 encePairwiseOnDemand]: 243/252 looper letters, 43 selfloop transitions, 8 changer transitions 0/51 dead transitions. [2023-11-19 07:43:19,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 51 transitions, 222 flow [2023-11-19 07:43:19,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:43:19,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:43:19,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 379 transitions. [2023-11-19 07:43:19,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5013227513227513 [2023-11-19 07:43:19,408 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 379 transitions. [2023-11-19 07:43:19,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 379 transitions. [2023-11-19 07:43:19,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:19,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 379 transitions. [2023-11-19 07:43:19,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states 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 07:43:19,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 07:43:19,419 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 07:43:19,419 INFO L175 Difference]: Start difference. First operand has 40 places, 28 transitions, 68 flow. Second operand 3 states and 379 transitions. [2023-11-19 07:43:19,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 51 transitions, 222 flow [2023-11-19 07:43:19,422 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 07:43:19,423 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 126 flow [2023-11-19 07:43:19,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, 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=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2023-11-19 07:43:19,431 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -2 predicate places. [2023-11-19 07:43:19,431 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 126 flow [2023-11-19 07:43:19,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states 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 07:43:19,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:19,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:19,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:43:19,432 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 07:43:19,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:19,435 INFO L85 PathProgramCache]: Analyzing trace with hash -218387101, now seen corresponding path program 1 times [2023-11-19 07:43:19,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:19,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056930071] [2023-11-19 07:43:19,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:19,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:19,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:19,684 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 07:43:19,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:19,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056930071] [2023-11-19 07:43:19,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056930071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:19,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:19,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:43:19,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218730938] [2023-11-19 07:43:19,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:19,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:43:19,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:19,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:43:19,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:43:19,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 252 [2023-11-19 07:43:19,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states 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 07:43:19,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:19,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 252 [2023-11-19 07:43:19,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:22,678 INFO L124 PetriNetUnfolderBase]: 16149/21975 cut-off events. [2023-11-19 07:43:22,678 INFO L125 PetriNetUnfolderBase]: For 8487/8487 co-relation queries the response was YES. [2023-11-19 07:43:22,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55465 conditions, 21975 events. 16149/21975 cut-off events. For 8487/8487 co-relation queries the response was YES. Maximal size of possible extension queue 716. Compared 114996 event pairs, 1334 based on Foata normal form. 40/22015 useless extension candidates. Maximal degree in co-relation 55453. Up to 12464 conditions per place. [2023-11-19 07:43:22,807 INFO L140 encePairwiseOnDemand]: 243/252 looper letters, 56 selfloop transitions, 12 changer transitions 0/68 dead transitions. [2023-11-19 07:43:22,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 68 transitions, 360 flow [2023-11-19 07:43:22,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:43:22,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:43:22,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 501 transitions. [2023-11-19 07:43:22,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2023-11-19 07:43:22,812 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 501 transitions. [2023-11-19 07:43:22,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 501 transitions. [2023-11-19 07:43:22,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:22,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 501 transitions. [2023-11-19 07:43:22,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 125.25) internal successors, (501), 4 states have internal predecessors, (501), 0 states have call successors, (0), 0 states 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 07:43:22,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 07:43:22,819 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 07:43:22,819 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 126 flow. Second operand 4 states and 501 transitions. [2023-11-19 07:43:22,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 68 transitions, 360 flow [2023-11-19 07:43:22,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 68 transitions, 334 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:43:22,889 INFO L231 Difference]: Finished difference. Result has 45 places, 42 transitions, 198 flow [2023-11-19 07:43:22,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=45, PETRI_TRANSITIONS=42} [2023-11-19 07:43:22,892 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2023-11-19 07:43:22,895 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 42 transitions, 198 flow [2023-11-19 07:43:22,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states 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 07:43:22,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:22,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:22,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:43:22,898 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 07:43:22,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:22,898 INFO L85 PathProgramCache]: Analyzing trace with hash -218386977, now seen corresponding path program 1 times [2023-11-19 07:43:22,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:22,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038219890] [2023-11-19 07:43:22,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:22,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:23,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:43:23,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:23,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038219890] [2023-11-19 07:43:23,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038219890] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:23,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:23,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:43:23,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491910211] [2023-11-19 07:43:23,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:23,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:43:23,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:23,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:43:23,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:43:23,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 252 [2023-11-19 07:43:23,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states 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 07:43:23,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:23,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 252 [2023-11-19 07:43:23,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:25,711 INFO L124 PetriNetUnfolderBase]: 15212/20712 cut-off events. [2023-11-19 07:43:25,711 INFO L125 PetriNetUnfolderBase]: For 17908/17908 co-relation queries the response was YES. [2023-11-19 07:43:25,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56464 conditions, 20712 events. 15212/20712 cut-off events. For 17908/17908 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 105945 event pairs, 3999 based on Foata normal form. 185/20897 useless extension candidates. Maximal degree in co-relation 56449. Up to 8783 conditions per place. [2023-11-19 07:43:26,054 INFO L140 encePairwiseOnDemand]: 244/252 looper letters, 64 selfloop transitions, 8 changer transitions 0/72 dead transitions. [2023-11-19 07:43:26,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 72 transitions, 436 flow [2023-11-19 07:43:26,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:43:26,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:43:26,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 496 transitions. [2023-11-19 07:43:26,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2023-11-19 07:43:26,057 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 496 transitions. [2023-11-19 07:43:26,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 496 transitions. [2023-11-19 07:43:26,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:26,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 496 transitions. [2023-11-19 07:43:26,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states 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 07:43:26,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 07:43:26,064 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 07:43:26,064 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 198 flow. Second operand 4 states and 496 transitions. [2023-11-19 07:43:26,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 72 transitions, 436 flow [2023-11-19 07:43:26,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 72 transitions, 436 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:43:26,140 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 272 flow [2023-11-19 07:43:26,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=272, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2023-11-19 07:43:26,141 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2023-11-19 07:43:26,141 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 272 flow [2023-11-19 07:43:26,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states 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 07:43:26,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:26,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:26,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:43:26,143 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 07:43:26,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:26,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1751379548, now seen corresponding path program 1 times [2023-11-19 07:43:26,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:26,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684007418] [2023-11-19 07:43:26,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:26,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:26,342 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 07:43:26,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:26,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684007418] [2023-11-19 07:43:26,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684007418] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:26,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:26,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:43:26,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431048253] [2023-11-19 07:43:26,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:26,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:43:26,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:26,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:43:26,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:43:26,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 252 [2023-11-19 07:43:26,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 272 flow. Second operand has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states 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 07:43:26,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:26,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 252 [2023-11-19 07:43:26,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:28,726 INFO L124 PetriNetUnfolderBase]: 14954/20366 cut-off events. [2023-11-19 07:43:28,726 INFO L125 PetriNetUnfolderBase]: For 33277/33277 co-relation queries the response was YES. [2023-11-19 07:43:28,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61281 conditions, 20366 events. 14954/20366 cut-off events. For 33277/33277 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 106229 event pairs, 2836 based on Foata normal form. 40/20406 useless extension candidates. Maximal degree in co-relation 61261. Up to 11586 conditions per place. [2023-11-19 07:43:29,050 INFO L140 encePairwiseOnDemand]: 243/252 looper letters, 68 selfloop transitions, 24 changer transitions 0/92 dead transitions. [2023-11-19 07:43:29,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 92 transitions, 666 flow [2023-11-19 07:43:29,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:43:29,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:43:29,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 508 transitions. [2023-11-19 07:43:29,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503968253968254 [2023-11-19 07:43:29,058 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 508 transitions. [2023-11-19 07:43:29,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 508 transitions. [2023-11-19 07:43:29,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:29,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 508 transitions. [2023-11-19 07:43:29,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states 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 07:43:29,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 07:43:29,065 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 07:43:29,066 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 272 flow. Second operand 4 states and 508 transitions. [2023-11-19 07:43:29,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 92 transitions, 666 flow [2023-11-19 07:43:29,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 92 transitions, 661 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:43:29,328 INFO L231 Difference]: Finished difference. Result has 56 places, 59 transitions, 502 flow [2023-11-19 07:43:29,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=502, PETRI_PLACES=56, PETRI_TRANSITIONS=59} [2023-11-19 07:43:29,329 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 13 predicate places. [2023-11-19 07:43:29,329 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 59 transitions, 502 flow [2023-11-19 07:43:29,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states 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 07:43:29,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:29,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:29,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:43:29,331 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 07:43:29,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:29,332 INFO L85 PathProgramCache]: Analyzing trace with hash 583325342, now seen corresponding path program 1 times [2023-11-19 07:43:29,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:29,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694360801] [2023-11-19 07:43:29,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:29,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:29,533 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 07:43:29,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:29,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694360801] [2023-11-19 07:43:29,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694360801] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:29,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:29,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:43:29,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358241137] [2023-11-19 07:43:29,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:29,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:43:29,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:29,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:43:29,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:43:29,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 252 [2023-11-19 07:43:29,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 59 transitions, 502 flow. Second operand has 4 states, 4 states have (on average 113.5) internal successors, (454), 4 states have internal predecessors, (454), 0 states have call successors, (0), 0 states 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 07:43:29,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:29,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 252 [2023-11-19 07:43:29,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:31,807 INFO L124 PetriNetUnfolderBase]: 10119/14769 cut-off events. [2023-11-19 07:43:31,808 INFO L125 PetriNetUnfolderBase]: For 42436/44216 co-relation queries the response was YES. [2023-11-19 07:43:31,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45806 conditions, 14769 events. 10119/14769 cut-off events. For 42436/44216 co-relation queries the response was YES. Maximal size of possible extension queue 683. Compared 90279 event pairs, 1589 based on Foata normal form. 1609/16133 useless extension candidates. Maximal degree in co-relation 45782. Up to 9004 conditions per place. [2023-11-19 07:43:31,929 INFO L140 encePairwiseOnDemand]: 245/252 looper letters, 124 selfloop transitions, 10 changer transitions 0/152 dead transitions. [2023-11-19 07:43:31,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 152 transitions, 1473 flow [2023-11-19 07:43:31,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:43:31,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:43:31,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 626 transitions. [2023-11-19 07:43:31,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49682539682539684 [2023-11-19 07:43:31,933 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 626 transitions. [2023-11-19 07:43:31,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 626 transitions. [2023-11-19 07:43:31,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:31,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 626 transitions. [2023-11-19 07:43:31,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.2) internal successors, (626), 5 states have internal predecessors, (626), 0 states have call successors, (0), 0 states 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 07:43:31,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 252.0) internal successors, (1512), 6 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states 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 07:43:31,941 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 252.0) internal successors, (1512), 6 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states 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 07:43:31,941 INFO L175 Difference]: Start difference. First operand has 56 places, 59 transitions, 502 flow. Second operand 5 states and 626 transitions. [2023-11-19 07:43:31,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 152 transitions, 1473 flow [2023-11-19 07:43:31,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 152 transitions, 1473 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:43:31,982 INFO L231 Difference]: Finished difference. Result has 63 places, 68 transitions, 577 flow [2023-11-19 07:43:31,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=577, PETRI_PLACES=63, PETRI_TRANSITIONS=68} [2023-11-19 07:43:31,986 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 20 predicate places. [2023-11-19 07:43:31,986 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 68 transitions, 577 flow [2023-11-19 07:43:31,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.5) internal successors, (454), 4 states have internal predecessors, (454), 0 states have call successors, (0), 0 states 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 07:43:31,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:31,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:31,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:43:31,988 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 07:43:31,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:31,988 INFO L85 PathProgramCache]: Analyzing trace with hash 749190731, now seen corresponding path program 1 times [2023-11-19 07:43:31,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:31,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120994253] [2023-11-19 07:43:31,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:31,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:32,246 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 07:43:32,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:32,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120994253] [2023-11-19 07:43:32,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120994253] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:32,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:32,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:43:32,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601253974] [2023-11-19 07:43:32,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:32,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:43:32,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:32,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:43:32,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:43:32,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 252 [2023-11-19 07:43:32,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 68 transitions, 577 flow. Second operand has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 07:43:32,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:32,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 252 [2023-11-19 07:43:32,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:35,174 INFO L124 PetriNetUnfolderBase]: 15172/22187 cut-off events. [2023-11-19 07:43:35,175 INFO L125 PetriNetUnfolderBase]: For 70239/70976 co-relation queries the response was YES. [2023-11-19 07:43:35,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84167 conditions, 22187 events. 15172/22187 cut-off events. For 70239/70976 co-relation queries the response was YES. Maximal size of possible extension queue 955. Compared 141626 event pairs, 7189 based on Foata normal form. 529/22326 useless extension candidates. Maximal degree in co-relation 84138. Up to 11417 conditions per place. [2023-11-19 07:43:35,320 INFO L140 encePairwiseOnDemand]: 249/252 looper letters, 71 selfloop transitions, 9 changer transitions 11/101 dead transitions. [2023-11-19 07:43:35,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 101 transitions, 937 flow [2023-11-19 07:43:35,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:43:35,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:43:35,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2023-11-19 07:43:35,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2023-11-19 07:43:35,323 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2023-11-19 07:43:35,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2023-11-19 07:43:35,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:35,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2023-11-19 07:43:35,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states 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 07:43:35,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 07:43:35,332 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 07:43:35,333 INFO L175 Difference]: Start difference. First operand has 63 places, 68 transitions, 577 flow. Second operand 3 states and 399 transitions. [2023-11-19 07:43:35,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 101 transitions, 937 flow [2023-11-19 07:43:35,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 101 transitions, 928 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:43:35,540 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 555 flow [2023-11-19 07:43:35,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=555, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2023-11-19 07:43:35,541 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 22 predicate places. [2023-11-19 07:43:35,541 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 555 flow [2023-11-19 07:43:35,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 07:43:35,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:35,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:35,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:43:35,543 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 07:43:35,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:35,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1813459052, now seen corresponding path program 1 times [2023-11-19 07:43:35,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:35,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376571109] [2023-11-19 07:43:35,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:35,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:35,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:35,883 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 07:43:35,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:35,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376571109] [2023-11-19 07:43:35,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376571109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:35,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:35,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:43:35,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157849009] [2023-11-19 07:43:35,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:35,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:43:35,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:35,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:43:35,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:43:35,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 252 [2023-11-19 07:43:35,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 555 flow. Second operand has 5 states, 5 states have (on average 113.2) internal successors, (566), 5 states have internal predecessors, (566), 0 states have call successors, (0), 0 states 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 07:43:35,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:35,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 252 [2023-11-19 07:43:35,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:38,503 INFO L124 PetriNetUnfolderBase]: 10029/15182 cut-off events. [2023-11-19 07:43:38,503 INFO L125 PetriNetUnfolderBase]: For 47873/49059 co-relation queries the response was YES. [2023-11-19 07:43:38,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55980 conditions, 15182 events. 10029/15182 cut-off events. For 47873/49059 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 100541 event pairs, 1089 based on Foata normal form. 1407/16279 useless extension candidates. Maximal degree in co-relation 55950. Up to 4989 conditions per place. [2023-11-19 07:43:38,583 INFO L140 encePairwiseOnDemand]: 245/252 looper letters, 163 selfloop transitions, 17 changer transitions 1/196 dead transitions. [2023-11-19 07:43:38,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 196 transitions, 2016 flow [2023-11-19 07:43:38,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:43:38,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:43:38,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 877 transitions. [2023-11-19 07:43:38,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4971655328798186 [2023-11-19 07:43:38,589 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 877 transitions. [2023-11-19 07:43:38,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 877 transitions. [2023-11-19 07:43:38,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:38,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 877 transitions. [2023-11-19 07:43:38,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 125.28571428571429) internal successors, (877), 7 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:43:38,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states 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 07:43:38,597 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states 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 07:43:38,597 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 555 flow. Second operand 7 states and 877 transitions. [2023-11-19 07:43:38,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 196 transitions, 2016 flow [2023-11-19 07:43:38,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 196 transitions, 1903 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-19 07:43:38,726 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 649 flow [2023-11-19 07:43:38,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=649, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2023-11-19 07:43:38,727 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 29 predicate places. [2023-11-19 07:43:38,728 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 649 flow [2023-11-19 07:43:38,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.2) internal successors, (566), 5 states have internal predecessors, (566), 0 states have call successors, (0), 0 states 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 07:43:38,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:38,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:38,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:43:38,729 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 07:43:38,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:38,729 INFO L85 PathProgramCache]: Analyzing trace with hash 873146225, now seen corresponding path program 1 times [2023-11-19 07:43:38,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:38,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434333573] [2023-11-19 07:43:38,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:38,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:38,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:39,048 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 07:43:39,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:39,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434333573] [2023-11-19 07:43:39,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434333573] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:39,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:39,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:43:39,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283632292] [2023-11-19 07:43:39,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:39,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:43:39,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:39,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:43:39,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:43:39,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 252 [2023-11-19 07:43:39,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 649 flow. Second operand has 6 states, 6 states have (on average 113.16666666666667) internal successors, (679), 6 states have internal predecessors, (679), 0 states have call successors, (0), 0 states 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 07:43:39,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:39,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 252 [2023-11-19 07:43:39,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:41,040 INFO L124 PetriNetUnfolderBase]: 9305/14079 cut-off events. [2023-11-19 07:43:41,041 INFO L125 PetriNetUnfolderBase]: For 45170/46313 co-relation queries the response was YES. [2023-11-19 07:43:41,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59140 conditions, 14079 events. 9305/14079 cut-off events. For 45170/46313 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 92829 event pairs, 916 based on Foata normal form. 742/14516 useless extension candidates. Maximal degree in co-relation 59107. Up to 4747 conditions per place. [2023-11-19 07:43:41,149 INFO L140 encePairwiseOnDemand]: 245/252 looper letters, 179 selfloop transitions, 26 changer transitions 15/235 dead transitions. [2023-11-19 07:43:41,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 235 transitions, 2349 flow [2023-11-19 07:43:41,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:43:41,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:43:41,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1128 transitions. [2023-11-19 07:43:41,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973544973544973 [2023-11-19 07:43:41,155 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1128 transitions. [2023-11-19 07:43:41,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1128 transitions. [2023-11-19 07:43:41,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:41,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1128 transitions. [2023-11-19 07:43:41,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 125.33333333333333) internal successors, (1128), 9 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states 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 07:43:41,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 252.0) internal successors, (2520), 10 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states 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 07:43:41,174 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 252.0) internal successors, (2520), 10 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states 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 07:43:41,174 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 649 flow. Second operand 9 states and 1128 transitions. [2023-11-19 07:43:41,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 235 transitions, 2349 flow [2023-11-19 07:43:43,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 235 transitions, 2301 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-11-19 07:43:43,080 INFO L231 Difference]: Finished difference. Result has 80 places, 81 transitions, 775 flow [2023-11-19 07:43:43,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=775, PETRI_PLACES=80, PETRI_TRANSITIONS=81} [2023-11-19 07:43:43,082 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 37 predicate places. [2023-11-19 07:43:43,082 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 81 transitions, 775 flow [2023-11-19 07:43:43,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.16666666666667) internal successors, (679), 6 states have internal predecessors, (679), 0 states have call successors, (0), 0 states 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 07:43:43,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:43,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:43,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:43:43,083 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 07:43:43,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:43,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1638893950, now seen corresponding path program 1 times [2023-11-19 07:43:43,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:43,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970971256] [2023-11-19 07:43:43,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:43,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:44,779 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 07:43:44,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:44,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970971256] [2023-11-19 07:43:44,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970971256] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:44,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:44,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:43:44,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739773610] [2023-11-19 07:43:44,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:44,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:43:44,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:44,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:43:44,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:43:44,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 252 [2023-11-19 07:43:44,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 81 transitions, 775 flow. Second operand has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 0 states 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 07:43:44,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:44,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 252 [2023-11-19 07:43:44,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:49,214 INFO L124 PetriNetUnfolderBase]: 15825/25008 cut-off events. [2023-11-19 07:43:49,214 INFO L125 PetriNetUnfolderBase]: For 106695/107434 co-relation queries the response was YES. [2023-11-19 07:43:49,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111204 conditions, 25008 events. 15825/25008 cut-off events. For 106695/107434 co-relation queries the response was YES. Maximal size of possible extension queue 1308. Compared 190807 event pairs, 2034 based on Foata normal form. 360/25160 useless extension candidates. Maximal degree in co-relation 111168. Up to 9113 conditions per place. [2023-11-19 07:43:49,444 INFO L140 encePairwiseOnDemand]: 244/252 looper letters, 198 selfloop transitions, 7 changer transitions 46/266 dead transitions. [2023-11-19 07:43:49,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 266 transitions, 2930 flow [2023-11-19 07:43:49,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:43:49,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:43:49,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 787 transitions. [2023-11-19 07:43:49,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5205026455026455 [2023-11-19 07:43:49,456 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 787 transitions. [2023-11-19 07:43:49,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 787 transitions. [2023-11-19 07:43:49,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:49,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 787 transitions. [2023-11-19 07:43:49,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 131.16666666666666) internal successors, (787), 6 states have internal predecessors, (787), 0 states have call successors, (0), 0 states 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 07:43:49,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 252.0) internal successors, (1764), 7 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states 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 07:43:49,468 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 252.0) internal successors, (1764), 7 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states 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 07:43:49,468 INFO L175 Difference]: Start difference. First operand has 80 places, 81 transitions, 775 flow. Second operand 6 states and 787 transitions. [2023-11-19 07:43:49,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 266 transitions, 2930 flow