./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix047_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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b78f29f-bae8-4370-8a58-0de3a85eb9c7/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b78f29f-bae8-4370-8a58-0de3a85eb9c7/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_9b78f29f-bae8-4370-8a58-0de3a85eb9c7/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b78f29f-bae8-4370-8a58-0de3a85eb9c7/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b78f29f-bae8-4370-8a58-0de3a85eb9c7/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_9b78f29f-bae8-4370-8a58-0de3a85eb9c7/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 dcc3fad0768415d67ba0b5226238487b935d262c55e83ab1790d239680fbb73d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:32:48,150 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:32:48,277 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b78f29f-bae8-4370-8a58-0de3a85eb9c7/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:32:48,290 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:32:48,291 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:32:48,328 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:32:48,330 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:32:48,330 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:32:48,331 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:32:48,337 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:32:48,338 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:32:48,338 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:32:48,339 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:32:48,341 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:32:48,341 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:32:48,342 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:32:48,342 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:32:48,343 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:32:48,343 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:32:48,344 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:32:48,344 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:32:48,345 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:32:48,346 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:32:48,346 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:32:48,347 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:32:48,347 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:32:48,348 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:32:48,349 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:32:48,349 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:32:48,350 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:32:48,351 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:32:48,351 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:32:48,352 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:32:48,352 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:32:48,352 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:32:48,352 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:32:48,353 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:32:48,353 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:32:48,353 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:32:48,354 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_9b78f29f-bae8-4370-8a58-0de3a85eb9c7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b78f29f-bae8-4370-8a58-0de3a85eb9c7/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dcc3fad0768415d67ba0b5226238487b935d262c55e83ab1790d239680fbb73d [2023-11-19 07:32:48,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:32:48,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:32:48,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:32:48,659 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:32:48,660 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:32:48,661 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b78f29f-bae8-4370-8a58-0de3a85eb9c7/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i [2023-11-19 07:32:51,882 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:32:52,155 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:32:52,155 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b78f29f-bae8-4370-8a58-0de3a85eb9c7/sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i [2023-11-19 07:32:52,183 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b78f29f-bae8-4370-8a58-0de3a85eb9c7/bin/uautomizer-verify-uCwYo4JHxu/data/e990c9acc/cb227e8746c64b679b691110f8e1b34c/FLAG10f40834a [2023-11-19 07:32:52,203 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b78f29f-bae8-4370-8a58-0de3a85eb9c7/bin/uautomizer-verify-uCwYo4JHxu/data/e990c9acc/cb227e8746c64b679b691110f8e1b34c [2023-11-19 07:32:52,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:32:52,207 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:32:52,209 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:32:52,209 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:32:52,221 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:32:52,222 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:52,223 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b4f8a68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52, skipping insertion in model container [2023-11-19 07:32:52,223 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:52,286 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:32:52,465 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_9b78f29f-bae8-4370-8a58-0de3a85eb9c7/sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2023-11-19 07:32:52,796 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:32:52,814 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:32:52,827 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_9b78f29f-bae8-4370-8a58-0de3a85eb9c7/sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2023-11-19 07:32:52,914 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:32:52,957 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:32:52,958 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:32:52,967 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:32:52,968 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52 WrapperNode [2023-11-19 07:32:52,973 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:32:52,974 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:32:52,974 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:32:52,975 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:32:52,984 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:53,029 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:53,063 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 143 [2023-11-19 07:32:53,064 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:32:53,065 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:32:53,065 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:32:53,065 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:32:53,076 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:53,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:53,088 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:53,088 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:53,102 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:53,105 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:53,109 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:53,111 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:53,141 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:32:53,142 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:32:53,142 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:32:53,142 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:32:53,143 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:53,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:32:53,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b78f29f-bae8-4370-8a58-0de3a85eb9c7/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:32:53,198 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b78f29f-bae8-4370-8a58-0de3a85eb9c7/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:32:53,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b78f29f-bae8-4370-8a58-0de3a85eb9c7/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:32:53,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:32:53,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:32:53,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:32:53,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:32:53,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:32:53,264 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:32:53,264 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:32:53,264 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:32:53,264 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:32:53,265 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:32:53,265 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:32:53,265 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-19 07:32:53,265 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-19 07:32:53,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:32:53,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:32:53,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:32:53,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:32:53,268 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 07:32:53,443 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:32:53,446 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:32:53,865 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:32:54,113 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:32:54,114 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:32:54,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:32:54 BoogieIcfgContainer [2023-11-19 07:32:54,121 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:32:54,126 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:32:54,126 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:32:54,130 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:32:54,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:32:52" (1/3) ... [2023-11-19 07:32:54,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640495b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:32:54, skipping insertion in model container [2023-11-19 07:32:54,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52" (2/3) ... [2023-11-19 07:32:54,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640495b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:32:54, skipping insertion in model container [2023-11-19 07:32:54,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:32:54" (3/3) ... [2023-11-19 07:32:54,135 INFO L112 eAbstractionObserver]: Analyzing ICFG mix047_power.oepc_pso.oepc_rmo.oepc.i [2023-11-19 07:32:54,145 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:32:54,158 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:32:54,158 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 07:32:54,158 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:32:54,255 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:32:54,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 135 transitions, 286 flow [2023-11-19 07:32:54,377 INFO L124 PetriNetUnfolderBase]: 3/131 cut-off events. [2023-11-19 07:32:54,377 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:32:54,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 131 events. 3/131 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. 0/126 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2023-11-19 07:32:54,385 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 135 transitions, 286 flow [2023-11-19 07:32:54,397 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 131 transitions, 274 flow [2023-11-19 07:32:54,402 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:32:54,415 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 141 places, 131 transitions, 274 flow [2023-11-19 07:32:54,418 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 141 places, 131 transitions, 274 flow [2023-11-19 07:32:54,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 131 transitions, 274 flow [2023-11-19 07:32:54,460 INFO L124 PetriNetUnfolderBase]: 3/131 cut-off events. [2023-11-19 07:32:54,460 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:32:54,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 131 events. 3/131 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. 0/126 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2023-11-19 07:32:54,466 INFO L119 LiptonReduction]: Number of co-enabled transitions 3676 [2023-11-19 07:32:59,534 INFO L134 LiptonReduction]: Checked pairs total: 9379 [2023-11-19 07:32:59,536 INFO L136 LiptonReduction]: Total number of compositions: 110 [2023-11-19 07:32:59,565 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:32:59,574 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;@685da6fa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:32:59,574 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-19 07:32:59,581 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:32:59,581 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-19 07:32:59,581 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:32:59,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:32:59,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:32:59,583 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 07:32:59,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:32:59,589 INFO L85 PathProgramCache]: Analyzing trace with hash 562403, now seen corresponding path program 1 times [2023-11-19 07:32:59,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:32:59,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381350699] [2023-11-19 07:32:59,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:32:59,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:32:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:00,115 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 07:33:00,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:00,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381350699] [2023-11-19 07:33:00,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381350699] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:00,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:00,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:33:00,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725002119] [2023-11-19 07:33:00,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:00,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:33:00,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:00,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:33:00,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:33:00,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 245 [2023-11-19 07:33:00,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states 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 07:33:00,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:33:00,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 245 [2023-11-19 07:33:00,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:33:01,795 INFO L124 PetriNetUnfolderBase]: 5879/8061 cut-off events. [2023-11-19 07:33:01,796 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-11-19 07:33:01,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16205 conditions, 8061 events. 5879/8061 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 39657 event pairs, 3031 based on Foata normal form. 0/7723 useless extension candidates. Maximal degree in co-relation 16193. Up to 6367 conditions per place. [2023-11-19 07:33:01,873 INFO L140 encePairwiseOnDemand]: 241/245 looper letters, 43 selfloop transitions, 2 changer transitions 2/51 dead transitions. [2023-11-19 07:33:01,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 51 transitions, 217 flow [2023-11-19 07:33:01,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:33:01,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:33:01,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 404 transitions. [2023-11-19 07:33:01,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5496598639455782 [2023-11-19 07:33:01,891 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 404 transitions. [2023-11-19 07:33:01,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 404 transitions. [2023-11-19 07:33:01,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:33:01,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 404 transitions. [2023-11-19 07:33:01,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states 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 07:33:01,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states 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 07:33:01,908 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states 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 07:33:01,910 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 76 flow. Second operand 3 states and 404 transitions. [2023-11-19 07:33:01,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 51 transitions, 217 flow [2023-11-19 07:33:01,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 51 transitions, 210 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:33:01,917 INFO L231 Difference]: Finished difference. Result has 41 places, 29 transitions, 70 flow [2023-11-19 07:33:01,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2023-11-19 07:33:01,928 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -3 predicate places. [2023-11-19 07:33:01,928 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 29 transitions, 70 flow [2023-11-19 07:33:01,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states 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 07:33:01,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:33:01,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:01,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:33:01,930 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 07:33:01,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:01,931 INFO L85 PathProgramCache]: Analyzing trace with hash 257329339, now seen corresponding path program 1 times [2023-11-19 07:33:01,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:01,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282755999] [2023-11-19 07:33:01,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:01,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:02,344 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 07:33:02,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:02,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282755999] [2023-11-19 07:33:02,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282755999] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:02,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:02,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:33:02,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832869633] [2023-11-19 07:33:02,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:02,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:33:02,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:02,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:33:02,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:33:02,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 245 [2023-11-19 07:33:02,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 29 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 0 states 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 07:33:02,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:33:02,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 245 [2023-11-19 07:33:02,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:33:07,329 INFO L124 PetriNetUnfolderBase]: 24574/33203 cut-off events. [2023-11-19 07:33:07,329 INFO L125 PetriNetUnfolderBase]: For 1637/1637 co-relation queries the response was YES. [2023-11-19 07:33:07,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68444 conditions, 33203 events. 24574/33203 cut-off events. For 1637/1637 co-relation queries the response was YES. Maximal size of possible extension queue 1065. Compared 181188 event pairs, 8056 based on Foata normal form. 1374/34577 useless extension candidates. Maximal degree in co-relation 68434. Up to 14653 conditions per place. [2023-11-19 07:33:07,664 INFO L140 encePairwiseOnDemand]: 234/245 looper letters, 44 selfloop transitions, 9 changer transitions 35/88 dead transitions. [2023-11-19 07:33:07,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 88 transitions, 374 flow [2023-11-19 07:33:07,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:33:07,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:33:07,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 600 transitions. [2023-11-19 07:33:07,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2023-11-19 07:33:07,673 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 600 transitions. [2023-11-19 07:33:07,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 600 transitions. [2023-11-19 07:33:07,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:33:07,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 600 transitions. [2023-11-19 07:33:07,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states 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 07:33:07,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states 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 07:33:07,689 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states 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 07:33:07,689 INFO L175 Difference]: Start difference. First operand has 41 places, 29 transitions, 70 flow. Second operand 5 states and 600 transitions. [2023-11-19 07:33:07,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 88 transitions, 374 flow [2023-11-19 07:33:07,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 88 transitions, 364 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:33:07,696 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 156 flow [2023-11-19 07:33:07,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=156, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2023-11-19 07:33:07,706 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 2 predicate places. [2023-11-19 07:33:07,706 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 156 flow [2023-11-19 07:33:07,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 0 states 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 07:33:07,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:33:07,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:07,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:33:07,708 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 07:33:07,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:07,709 INFO L85 PathProgramCache]: Analyzing trace with hash -612780111, now seen corresponding path program 1 times [2023-11-19 07:33:07,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:07,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439733895] [2023-11-19 07:33:07,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:07,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:07,998 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 07:33:07,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:07,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439733895] [2023-11-19 07:33:07,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439733895] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:07,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:08,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:33:08,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251879059] [2023-11-19 07:33:08,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:08,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:33:08,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:08,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:33:08,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:33:08,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 245 [2023-11-19 07:33:08,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 156 flow. Second operand has 5 states, 5 states have (on average 104.6) internal successors, (523), 5 states have internal predecessors, (523), 0 states have call successors, (0), 0 states 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 07:33:08,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:33:08,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 245 [2023-11-19 07:33:08,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:33:12,613 INFO L124 PetriNetUnfolderBase]: 22916/31221 cut-off events. [2023-11-19 07:33:12,613 INFO L125 PetriNetUnfolderBase]: For 25794/25794 co-relation queries the response was YES. [2023-11-19 07:33:12,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88892 conditions, 31221 events. 22916/31221 cut-off events. For 25794/25794 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 173695 event pairs, 2477 based on Foata normal form. 1316/32537 useless extension candidates. Maximal degree in co-relation 88878. Up to 13366 conditions per place. [2023-11-19 07:33:12,782 INFO L140 encePairwiseOnDemand]: 234/245 looper letters, 63 selfloop transitions, 13 changer transitions 53/129 dead transitions. [2023-11-19 07:33:12,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 129 transitions, 782 flow [2023-11-19 07:33:12,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:33:12,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:33:12,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 833 transitions. [2023-11-19 07:33:12,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2023-11-19 07:33:12,786 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 833 transitions. [2023-11-19 07:33:12,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 833 transitions. [2023-11-19 07:33:12,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:33:12,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 833 transitions. [2023-11-19 07:33:12,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 0 states have call successors, (0), 0 states 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 07:33:12,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states 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 07:33:12,797 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states 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 07:33:12,797 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 156 flow. Second operand 7 states and 833 transitions. [2023-11-19 07:33:12,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 129 transitions, 782 flow [2023-11-19 07:33:12,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 129 transitions, 720 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:33:12,890 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 266 flow [2023-11-19 07:33:12,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=266, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2023-11-19 07:33:12,892 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 10 predicate places. [2023-11-19 07:33:12,895 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 266 flow [2023-11-19 07:33:12,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.6) internal successors, (523), 5 states have internal predecessors, (523), 0 states have call successors, (0), 0 states 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 07:33:12,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:33:12,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:12,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:33:12,897 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 07:33:12,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:12,898 INFO L85 PathProgramCache]: Analyzing trace with hash -612755125, now seen corresponding path program 1 times [2023-11-19 07:33:12,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:12,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385126179] [2023-11-19 07:33:12,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:12,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:13,155 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 07:33:13,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:13,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385126179] [2023-11-19 07:33:13,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385126179] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:13,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:13,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:33:13,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599270571] [2023-11-19 07:33:13,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:13,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:33:13,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:13,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:33:13,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:33:13,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 245 [2023-11-19 07:33:13,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 266 flow. Second operand has 5 states, 5 states have (on average 104.6) internal successors, (523), 5 states have internal predecessors, (523), 0 states have call successors, (0), 0 states 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 07:33:13,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:33:13,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 245 [2023-11-19 07:33:13,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:33:17,226 INFO L124 PetriNetUnfolderBase]: 20619/28132 cut-off events. [2023-11-19 07:33:17,227 INFO L125 PetriNetUnfolderBase]: For 65328/65328 co-relation queries the response was YES. [2023-11-19 07:33:17,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89847 conditions, 28132 events. 20619/28132 cut-off events. For 65328/65328 co-relation queries the response was YES. Maximal size of possible extension queue 891. Compared 151323 event pairs, 3650 based on Foata normal form. 1236/29368 useless extension candidates. Maximal degree in co-relation 89827. Up to 10075 conditions per place. [2023-11-19 07:33:17,438 INFO L140 encePairwiseOnDemand]: 235/245 looper letters, 68 selfloop transitions, 15 changer transitions 52/135 dead transitions. [2023-11-19 07:33:17,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 135 transitions, 972 flow [2023-11-19 07:33:17,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:33:17,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:33:17,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 823 transitions. [2023-11-19 07:33:17,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47988338192419827 [2023-11-19 07:33:17,443 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 823 transitions. [2023-11-19 07:33:17,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 823 transitions. [2023-11-19 07:33:17,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:33:17,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 823 transitions. [2023-11-19 07:33:17,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 117.57142857142857) internal successors, (823), 7 states have internal predecessors, (823), 0 states have call successors, (0), 0 states 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 07:33:17,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states 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 07:33:17,455 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states 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 07:33:17,455 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 266 flow. Second operand 7 states and 823 transitions. [2023-11-19 07:33:17,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 135 transitions, 972 flow [2023-11-19 07:33:17,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 135 transitions, 964 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-11-19 07:33:17,980 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 430 flow [2023-11-19 07:33:17,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=430, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2023-11-19 07:33:17,982 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 19 predicate places. [2023-11-19 07:33:17,982 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 430 flow [2023-11-19 07:33:17,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.6) internal successors, (523), 5 states have internal predecessors, (523), 0 states have call successors, (0), 0 states 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 07:33:17,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:33:17,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:17,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:33:17,984 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 07:33:17,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:17,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1978662564, now seen corresponding path program 1 times [2023-11-19 07:33:17,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:17,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24605294] [2023-11-19 07:33:17,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:17,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:18,262 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 07:33:18,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:18,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24605294] [2023-11-19 07:33:18,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24605294] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:18,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:18,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:33:18,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307092605] [2023-11-19 07:33:18,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:18,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:33:18,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:18,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:33:18,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:33:18,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 245 [2023-11-19 07:33:18,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 430 flow. Second operand has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 0 states have call successors, (0), 0 states 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 07:33:18,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:33:18,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 245 [2023-11-19 07:33:18,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:33:22,156 INFO L124 PetriNetUnfolderBase]: 18851/25704 cut-off events. [2023-11-19 07:33:22,156 INFO L125 PetriNetUnfolderBase]: For 88336/88336 co-relation queries the response was YES. [2023-11-19 07:33:22,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91484 conditions, 25704 events. 18851/25704 cut-off events. For 88336/88336 co-relation queries the response was YES. Maximal size of possible extension queue 756. Compared 138259 event pairs, 3238 based on Foata normal form. 712/26416 useless extension candidates. Maximal degree in co-relation 91456. Up to 11535 conditions per place. [2023-11-19 07:33:22,303 INFO L140 encePairwiseOnDemand]: 234/245 looper letters, 70 selfloop transitions, 34 changer transitions 41/145 dead transitions. [2023-11-19 07:33:22,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 145 transitions, 1212 flow [2023-11-19 07:33:22,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:33:22,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:33:22,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 828 transitions. [2023-11-19 07:33:22,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.482798833819242 [2023-11-19 07:33:22,310 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 828 transitions. [2023-11-19 07:33:22,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 828 transitions. [2023-11-19 07:33:22,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:33:22,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 828 transitions. [2023-11-19 07:33:22,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 118.28571428571429) internal successors, (828), 7 states have internal predecessors, (828), 0 states have call successors, (0), 0 states 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 07:33:22,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states 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 07:33:22,318 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states 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 07:33:22,318 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 430 flow. Second operand 7 states and 828 transitions. [2023-11-19 07:33:22,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 145 transitions, 1212 flow [2023-11-19 07:33:22,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 145 transitions, 1172 flow, removed 17 selfloop flow, removed 4 redundant places. [2023-11-19 07:33:22,831 INFO L231 Difference]: Finished difference. Result has 68 places, 71 transitions, 733 flow [2023-11-19 07:33:22,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=733, PETRI_PLACES=68, PETRI_TRANSITIONS=71} [2023-11-19 07:33:22,832 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 24 predicate places. [2023-11-19 07:33:22,832 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 71 transitions, 733 flow [2023-11-19 07:33:22,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 0 states have call successors, (0), 0 states 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 07:33:22,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:33:22,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:22,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:33:22,834 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 07:33:22,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:22,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1738349388, now seen corresponding path program 1 times [2023-11-19 07:33:22,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:22,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821644188] [2023-11-19 07:33:22,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:22,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:22,992 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 07:33:22,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:22,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821644188] [2023-11-19 07:33:22,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821644188] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:22,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:22,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:33:22,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955760163] [2023-11-19 07:33:22,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:22,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:33:22,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:22,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:33:22,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:33:23,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 245 [2023-11-19 07:33:23,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 71 transitions, 733 flow. Second operand has 4 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 0 states have call successors, (0), 0 states 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 07:33:23,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:33:23,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 245 [2023-11-19 07:33:23,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:33:27,402 INFO L124 PetriNetUnfolderBase]: 21670/30891 cut-off events. [2023-11-19 07:33:27,402 INFO L125 PetriNetUnfolderBase]: For 137191/139133 co-relation queries the response was YES. [2023-11-19 07:33:27,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110809 conditions, 30891 events. 21670/30891 cut-off events. For 137191/139133 co-relation queries the response was YES. Maximal size of possible extension queue 1192. Compared 195051 event pairs, 7677 based on Foata normal form. 1451/31800 useless extension candidates. Maximal degree in co-relation 110777. Up to 14908 conditions per place. [2023-11-19 07:33:27,963 INFO L140 encePairwiseOnDemand]: 241/245 looper letters, 62 selfloop transitions, 8 changer transitions 26/115 dead transitions. [2023-11-19 07:33:27,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 115 transitions, 1123 flow [2023-11-19 07:33:27,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:33:27,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:33:27,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 624 transitions. [2023-11-19 07:33:27,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5093877551020408 [2023-11-19 07:33:27,971 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 624 transitions. [2023-11-19 07:33:27,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 624 transitions. [2023-11-19 07:33:27,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:33:27,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 624 transitions. [2023-11-19 07:33:27,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 124.8) internal successors, (624), 5 states have internal predecessors, (624), 0 states have call successors, (0), 0 states 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 07:33:27,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states 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 07:33:27,982 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states 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 07:33:27,982 INFO L175 Difference]: Start difference. First operand has 68 places, 71 transitions, 733 flow. Second operand 5 states and 624 transitions. [2023-11-19 07:33:27,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 115 transitions, 1123 flow [2023-11-19 07:33:28,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 115 transitions, 1093 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-11-19 07:33:28,898 INFO L231 Difference]: Finished difference. Result has 70 places, 70 transitions, 725 flow [2023-11-19 07:33:28,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=725, PETRI_PLACES=70, PETRI_TRANSITIONS=70} [2023-11-19 07:33:28,900 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 26 predicate places. [2023-11-19 07:33:28,900 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 70 transitions, 725 flow [2023-11-19 07:33:28,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 0 states have call successors, (0), 0 states 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 07:33:28,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:33:28,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:28,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:33:28,902 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 07:33:28,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:28,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1825032602, now seen corresponding path program 1 times [2023-11-19 07:33:28,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:28,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683106798] [2023-11-19 07:33:28,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:28,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:28,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:29,185 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 07:33:29,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:29,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683106798] [2023-11-19 07:33:29,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683106798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:29,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:29,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:33:29,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979213798] [2023-11-19 07:33:29,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:29,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:33:29,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:29,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:33:29,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:33:29,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 245 [2023-11-19 07:33:29,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 70 transitions, 725 flow. Second operand has 4 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 0 states have call successors, (0), 0 states 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 07:33:29,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:33:29,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 245 [2023-11-19 07:33:29,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:33:32,778 INFO L124 PetriNetUnfolderBase]: 14047/20971 cut-off events. [2023-11-19 07:33:32,778 INFO L125 PetriNetUnfolderBase]: For 84738/87989 co-relation queries the response was YES. [2023-11-19 07:33:32,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71128 conditions, 20971 events. 14047/20971 cut-off events. For 84738/87989 co-relation queries the response was YES. Maximal size of possible extension queue 1024. Compared 140461 event pairs, 2461 based on Foata normal form. 2324/22994 useless extension candidates. Maximal degree in co-relation 71094. Up to 13481 conditions per place. [2023-11-19 07:33:32,917 INFO L140 encePairwiseOnDemand]: 238/245 looper letters, 139 selfloop transitions, 10 changer transitions 0/173 dead transitions. [2023-11-19 07:33:32,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 173 transitions, 1978 flow [2023-11-19 07:33:32,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:33:32,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:33:32,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 633 transitions. [2023-11-19 07:33:32,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.516734693877551 [2023-11-19 07:33:32,922 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 633 transitions. [2023-11-19 07:33:32,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 633 transitions. [2023-11-19 07:33:32,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:33:32,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 633 transitions. [2023-11-19 07:33:32,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.6) internal successors, (633), 5 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:32,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states 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 07:33:32,930 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states 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 07:33:32,930 INFO L175 Difference]: Start difference. First operand has 70 places, 70 transitions, 725 flow. Second operand 5 states and 633 transitions. [2023-11-19 07:33:32,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 173 transitions, 1978 flow [2023-11-19 07:33:33,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 173 transitions, 1933 flow, removed 14 selfloop flow, removed 6 redundant places. [2023-11-19 07:33:33,265 INFO L231 Difference]: Finished difference. Result has 69 places, 79 transitions, 776 flow [2023-11-19 07:33:33,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=776, PETRI_PLACES=69, PETRI_TRANSITIONS=79} [2023-11-19 07:33:33,266 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 25 predicate places. [2023-11-19 07:33:33,266 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 79 transitions, 776 flow [2023-11-19 07:33:33,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 0 states have call successors, (0), 0 states 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 07:33:33,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:33:33,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:33,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:33:33,267 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 07:33:33,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:33,268 INFO L85 PathProgramCache]: Analyzing trace with hash 252267130, now seen corresponding path program 1 times [2023-11-19 07:33:33,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:33,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051566057] [2023-11-19 07:33:33,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:33,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:33,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:33,552 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 07:33:33,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:33,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051566057] [2023-11-19 07:33:33,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051566057] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:33,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:33,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:33:33,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149139949] [2023-11-19 07:33:33,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:33,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:33:33,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:33,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:33:33,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:33:33,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 245 [2023-11-19 07:33:33,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 79 transitions, 776 flow. Second operand has 5 states, 5 states have (on average 105.8) internal successors, (529), 5 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:33,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:33:33,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 245 [2023-11-19 07:33:33,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand