./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 b699de581afb3d801299d89a35eee78f9e3cb86ad1a23fab537b92eb394c5e62 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:02:41,074 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:02:41,165 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 23:02:41,172 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:02:41,173 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:02:41,213 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:02:41,214 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:02:41,215 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:02:41,216 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:02:41,221 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:02:41,223 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:02:41,223 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:02:41,224 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:02:41,226 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:02:41,226 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:02:41,226 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:02:41,227 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:02:41,228 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:02:41,228 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:02:41,228 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:02:41,229 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:02:41,231 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:02:41,231 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:02:41,232 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:02:41,232 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:02:41,233 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:02:41,234 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:02:41,234 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:02:41,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:02:41,235 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:02:41,237 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:02:41,237 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:02:41,237 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:02:41,238 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:02:41,238 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:02:41,238 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:02:41,238 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:02:41,239 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:02:41,239 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:02:41,239 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_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b699de581afb3d801299d89a35eee78f9e3cb86ad1a23fab537b92eb394c5e62 [2023-11-06 23:02:41,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:02:41,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:02:41,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:02:41,591 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:02:41,591 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:02:41,593 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2023-11-06 23:02:44,759 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:02:45,007 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:02:45,007 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2023-11-06 23:02:45,018 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/data/8ff93d99c/b6ee2a900900493cbe82a60ed08702ec/FLAGf2cd4594d [2023-11-06 23:02:45,044 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/data/8ff93d99c/b6ee2a900900493cbe82a60ed08702ec [2023-11-06 23:02:45,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:02:45,054 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:02:45,060 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:02:45,060 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:02:45,066 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:02:45,067 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:02:45" (1/1) ... [2023-11-06 23:02:45,068 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9814349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:45, skipping insertion in model container [2023-11-06 23:02:45,068 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:02:45" (1/1) ... [2023-11-06 23:02:45,099 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:02:45,294 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_cc89338e-4feb-4194-89a6-256c4488f894/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c[2856,2869] [2023-11-06 23:02:45,299 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:02:45,309 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:02:45,334 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_cc89338e-4feb-4194-89a6-256c4488f894/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c[2856,2869] [2023-11-06 23:02:45,335 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:02:45,343 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:02:45,344 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:02:45,351 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:02:45,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:45 WrapperNode [2023-11-06 23:02:45,352 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:02:45,354 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:02:45,354 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:02:45,354 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:02:45,362 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:45" (1/1) ... [2023-11-06 23:02:45,371 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:45" (1/1) ... [2023-11-06 23:02:45,392 INFO L138 Inliner]: procedures = 22, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2023-11-06 23:02:45,393 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:02:45,394 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:02:45,394 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:02:45,394 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:02:45,404 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:45" (1/1) ... [2023-11-06 23:02:45,404 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:45" (1/1) ... [2023-11-06 23:02:45,407 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:45" (1/1) ... [2023-11-06 23:02:45,407 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:45" (1/1) ... [2023-11-06 23:02:45,414 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:45" (1/1) ... [2023-11-06 23:02:45,418 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:45" (1/1) ... [2023-11-06 23:02:45,420 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:45" (1/1) ... [2023-11-06 23:02:45,421 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:45" (1/1) ... [2023-11-06 23:02:45,424 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:02:45,425 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:02:45,425 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:02:45,426 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:02:45,427 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:45" (1/1) ... [2023-11-06 23:02:45,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:02:45,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:02:45,456 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:02:45,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:02:45,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:02:45,497 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 23:02:45,497 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 23:02:45,497 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 23:02:45,497 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 23:02:45,497 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 23:02:45,498 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 23:02:45,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:02:45,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:02:45,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:02:45,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 23:02:45,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 23:02:45,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:02:45,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:02:45,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:02:45,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:02:45,504 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 23:02:45,648 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:02:45,653 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:02:45,944 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:02:46,003 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:02:46,003 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-06 23:02:46,009 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:02:46 BoogieIcfgContainer [2023-11-06 23:02:46,011 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:02:46,013 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:02:46,014 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:02:46,018 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:02:46,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:02:45" (1/3) ... [2023-11-06 23:02:46,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e9aacd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:02:46, skipping insertion in model container [2023-11-06 23:02:46,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:45" (2/3) ... [2023-11-06 23:02:46,026 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e9aacd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:02:46, skipping insertion in model container [2023-11-06 23:02:46,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:02:46" (3/3) ... [2023-11-06 23:02:46,029 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3-extended.wvr.c [2023-11-06 23:02:46,036 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 23:02:46,045 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:02:46,045 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 23:02:46,045 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 23:02:46,139 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 23:02:46,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 128 transitions, 277 flow [2023-11-06 23:02:46,247 INFO L124 PetriNetUnfolderBase]: 16/125 cut-off events. [2023-11-06 23:02:46,247 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 23:02:46,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 125 events. 16/125 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 145 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 79. Up to 4 conditions per place. [2023-11-06 23:02:46,256 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 128 transitions, 277 flow [2023-11-06 23:02:46,261 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 114 transitions, 246 flow [2023-11-06 23:02:46,265 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:02:46,276 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 108 places, 114 transitions, 246 flow [2023-11-06 23:02:46,279 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 108 places, 114 transitions, 246 flow [2023-11-06 23:02:46,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 114 transitions, 246 flow [2023-11-06 23:02:46,320 INFO L124 PetriNetUnfolderBase]: 16/114 cut-off events. [2023-11-06 23:02:46,321 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 23:02:46,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 114 events. 16/114 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 144 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 79. Up to 4 conditions per place. [2023-11-06 23:02:46,326 INFO L119 LiptonReduction]: Number of co-enabled transitions 3240 [2023-11-06 23:02:51,442 INFO L134 LiptonReduction]: Checked pairs total: 3015 [2023-11-06 23:02:51,442 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-11-06 23:02:51,459 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:02:51,467 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=LoopsAndPotentialCycles, 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;@6643b52e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:02:51,467 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-06 23:02:51,474 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:02:51,474 INFO L124 PetriNetUnfolderBase]: 3/18 cut-off events. [2023-11-06 23:02:51,475 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 23:02:51,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:51,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:51,476 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:02:51,481 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:51,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1929211219, now seen corresponding path program 1 times [2023-11-06 23:02:51,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:51,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166018060] [2023-11-06 23:02:51,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:51,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:51,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:02:51,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:51,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166018060] [2023-11-06 23:02:51,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166018060] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:51,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:51,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:02:51,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231108288] [2023-11-06 23:02:51,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:51,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:02:51,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:51,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:02:51,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:02:51,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 241 [2023-11-06 23:02:51,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:51,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:51,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 241 [2023-11-06 23:02:51,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:52,094 INFO L124 PetriNetUnfolderBase]: 161/245 cut-off events. [2023-11-06 23:02:52,094 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-11-06 23:02:52,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535 conditions, 245 events. 161/245 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 597 event pairs, 37 based on Foata normal form. 1/158 useless extension candidates. Maximal degree in co-relation 376. Up to 167 conditions per place. [2023-11-06 23:02:52,106 INFO L140 encePairwiseOnDemand]: 236/241 looper letters, 30 selfloop transitions, 4 changer transitions 1/35 dead transitions. [2023-11-06 23:02:52,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 35 transitions, 173 flow [2023-11-06 23:02:52,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:02:52,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:02:52,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 366 transitions. [2023-11-06 23:02:52,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5062240663900415 [2023-11-06 23:02:52,137 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 366 transitions. [2023-11-06 23:02:52,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 366 transitions. [2023-11-06 23:02:52,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:52,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 366 transitions. [2023-11-06 23:02:52,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:52,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:52,159 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:52,161 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 56 flow. Second operand 3 states and 366 transitions. [2023-11-06 23:02:52,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 35 transitions, 173 flow [2023-11-06 23:02:52,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 35 transitions, 151 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 23:02:52,168 INFO L231 Difference]: Finished difference. Result has 23 places, 22 transitions, 70 flow [2023-11-06 23:02:52,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=23, PETRI_TRANSITIONS=22} [2023-11-06 23:02:52,178 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -3 predicate places. [2023-11-06 23:02:52,178 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 22 transitions, 70 flow [2023-11-06 23:02:52,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:52,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:52,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:52,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:02:52,179 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:02:52,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:52,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1704384757, now seen corresponding path program 1 times [2023-11-06 23:02:52,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:52,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040446865] [2023-11-06 23:02:52,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:52,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:52,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:02:52,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:52,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040446865] [2023-11-06 23:02:52,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040446865] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:52,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:52,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:02:52,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560307123] [2023-11-06 23:02:52,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:52,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:02:52,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:52,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:02:52,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:02:52,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 241 [2023-11-06 23:02:52,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 22 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:52,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:52,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 241 [2023-11-06 23:02:52,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:52,449 INFO L124 PetriNetUnfolderBase]: 157/236 cut-off events. [2023-11-06 23:02:52,450 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2023-11-06 23:02:52,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 236 events. 157/236 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 558 event pairs, 29 based on Foata normal form. 32/268 useless extension candidates. Maximal degree in co-relation 145. Up to 147 conditions per place. [2023-11-06 23:02:52,454 INFO L140 encePairwiseOnDemand]: 238/241 looper letters, 29 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2023-11-06 23:02:52,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 32 transitions, 162 flow [2023-11-06 23:02:52,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:02:52,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:02:52,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2023-11-06 23:02:52,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020746887966805 [2023-11-06 23:02:52,459 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 363 transitions. [2023-11-06 23:02:52,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 363 transitions. [2023-11-06 23:02:52,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:52,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 363 transitions. [2023-11-06 23:02:52,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:52,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:52,466 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:52,466 INFO L175 Difference]: Start difference. First operand has 23 places, 22 transitions, 70 flow. Second operand 3 states and 363 transitions. [2023-11-06 23:02:52,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 32 transitions, 162 flow [2023-11-06 23:02:52,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 32 transitions, 156 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 23:02:52,469 INFO L231 Difference]: Finished difference. Result has 25 places, 23 transitions, 81 flow [2023-11-06 23:02:52,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=25, PETRI_TRANSITIONS=23} [2023-11-06 23:02:52,470 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2023-11-06 23:02:52,471 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 23 transitions, 81 flow [2023-11-06 23:02:52,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:52,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:52,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:52,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:02:52,472 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:02:52,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:52,473 INFO L85 PathProgramCache]: Analyzing trace with hash 931322567, now seen corresponding path program 1 times [2023-11-06 23:02:52,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:52,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699333988] [2023-11-06 23:02:52,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:52,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:52,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:02:52,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:52,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699333988] [2023-11-06 23:02:52,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699333988] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:52,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:52,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:02:52,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418763109] [2023-11-06 23:02:52,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:52,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:02:52,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:52,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:02:52,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:02:52,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 241 [2023-11-06 23:02:52,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 23 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:52,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:52,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 241 [2023-11-06 23:02:52,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:52,735 INFO L124 PetriNetUnfolderBase]: 171/254 cut-off events. [2023-11-06 23:02:52,735 INFO L125 PetriNetUnfolderBase]: For 143/143 co-relation queries the response was YES. [2023-11-06 23:02:52,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 744 conditions, 254 events. 171/254 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 617 event pairs, 35 based on Foata normal form. 24/278 useless extension candidates. Maximal degree in co-relation 183. Up to 199 conditions per place. [2023-11-06 23:02:52,738 INFO L140 encePairwiseOnDemand]: 238/241 looper letters, 31 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2023-11-06 23:02:52,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 34 transitions, 188 flow [2023-11-06 23:02:52,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:02:52,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:02:52,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2023-11-06 23:02:52,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020746887966805 [2023-11-06 23:02:52,741 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 363 transitions. [2023-11-06 23:02:52,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 363 transitions. [2023-11-06 23:02:52,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:52,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 363 transitions. [2023-11-06 23:02:52,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:52,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:52,764 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:52,764 INFO L175 Difference]: Start difference. First operand has 25 places, 23 transitions, 81 flow. Second operand 3 states and 363 transitions. [2023-11-06 23:02:52,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 34 transitions, 188 flow [2023-11-06 23:02:52,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 34 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:02:52,767 INFO L231 Difference]: Finished difference. Result has 27 places, 24 transitions, 95 flow [2023-11-06 23:02:52,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=27, PETRI_TRANSITIONS=24} [2023-11-06 23:02:52,768 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2023-11-06 23:02:52,768 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 24 transitions, 95 flow [2023-11-06 23:02:52,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:52,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:52,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:52,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 23:02:52,770 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:02:52,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:52,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1288638453, now seen corresponding path program 1 times [2023-11-06 23:02:52,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:52,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970189216] [2023-11-06 23:02:52,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:52,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:52,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:52,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:02:52,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:52,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970189216] [2023-11-06 23:02:52,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970189216] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:52,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:52,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:02:52,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481758690] [2023-11-06 23:02:52,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:52,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:02:52,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:52,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:02:52,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:02:52,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 241 [2023-11-06 23:02:52,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 24 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:52,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:52,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 241 [2023-11-06 23:02:52,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:52,997 INFO L124 PetriNetUnfolderBase]: 220/325 cut-off events. [2023-11-06 23:02:52,997 INFO L125 PetriNetUnfolderBase]: For 318/318 co-relation queries the response was YES. [2023-11-06 23:02:52,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1030 conditions, 325 events. 220/325 cut-off events. For 318/318 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 803 event pairs, 40 based on Foata normal form. 26/351 useless extension candidates. Maximal degree in co-relation 701. Up to 199 conditions per place. [2023-11-06 23:02:53,003 INFO L140 encePairwiseOnDemand]: 238/241 looper letters, 33 selfloop transitions, 3 changer transitions 0/36 dead transitions. [2023-11-06 23:02:53,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 36 transitions, 216 flow [2023-11-06 23:02:53,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:02:53,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:02:53,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2023-11-06 23:02:53,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020746887966805 [2023-11-06 23:02:53,007 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 363 transitions. [2023-11-06 23:02:53,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 363 transitions. [2023-11-06 23:02:53,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:53,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 363 transitions. [2023-11-06 23:02:53,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:53,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:53,013 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:53,014 INFO L175 Difference]: Start difference. First operand has 27 places, 24 transitions, 95 flow. Second operand 3 states and 363 transitions. [2023-11-06 23:02:53,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 36 transitions, 216 flow [2023-11-06 23:02:53,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 36 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:02:53,019 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 109 flow [2023-11-06 23:02:53,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2023-11-06 23:02:53,022 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2023-11-06 23:02:53,023 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 109 flow [2023-11-06 23:02:53,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:53,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:53,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:53,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 23:02:53,024 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:02:53,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:53,025 INFO L85 PathProgramCache]: Analyzing trace with hash 553798830, now seen corresponding path program 1 times [2023-11-06 23:02:53,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:53,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957773126] [2023-11-06 23:02:53,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:53,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:53,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:02:53,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:53,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957773126] [2023-11-06 23:02:53,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957773126] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:02:53,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446904056] [2023-11-06 23:02:53,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:53,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:02:53,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:02:53,457 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:02:53,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:02:53,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:53,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 23:02:53,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:02:53,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:02:53,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:02:54,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:02:54,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446904056] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:02:54,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:02:54,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 9 [2023-11-06 23:02:54,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543271744] [2023-11-06 23:02:54,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:02:54,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 23:02:54,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:54,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 23:02:54,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-06 23:02:54,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 241 [2023-11-06 23:02:54,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 109 flow. Second operand has 10 states, 10 states have (on average 90.3) internal successors, (903), 10 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:54,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:54,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 241 [2023-11-06 23:02:54,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:55,111 INFO L124 PetriNetUnfolderBase]: 397/584 cut-off events. [2023-11-06 23:02:55,112 INFO L125 PetriNetUnfolderBase]: For 594/594 co-relation queries the response was YES. [2023-11-06 23:02:55,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2004 conditions, 584 events. 397/584 cut-off events. For 594/594 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1762 event pairs, 0 based on Foata normal form. 80/664 useless extension candidates. Maximal degree in co-relation 622. Up to 325 conditions per place. [2023-11-06 23:02:55,118 INFO L140 encePairwiseOnDemand]: 234/241 looper letters, 112 selfloop transitions, 45 changer transitions 0/157 dead transitions. [2023-11-06 23:02:55,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 157 transitions, 969 flow [2023-11-06 23:02:55,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-06 23:02:55,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-06 23:02:55,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2031 transitions. [2023-11-06 23:02:55,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38306299509619013 [2023-11-06 23:02:55,129 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2031 transitions. [2023-11-06 23:02:55,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2031 transitions. [2023-11-06 23:02:55,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:55,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2031 transitions. [2023-11-06 23:02:55,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 92.31818181818181) internal successors, (2031), 22 states have internal predecessors, (2031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:55,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 241.0) internal successors, (5543), 23 states have internal predecessors, (5543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:55,157 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 241.0) internal successors, (5543), 23 states have internal predecessors, (5543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:55,157 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 109 flow. Second operand 22 states and 2031 transitions. [2023-11-06 23:02:55,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 157 transitions, 969 flow [2023-11-06 23:02:55,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 157 transitions, 962 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:02:55,165 INFO L231 Difference]: Finished difference. Result has 61 places, 65 transitions, 524 flow [2023-11-06 23:02:55,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=524, PETRI_PLACES=61, PETRI_TRANSITIONS=65} [2023-11-06 23:02:55,166 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 35 predicate places. [2023-11-06 23:02:55,166 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 65 transitions, 524 flow [2023-11-06 23:02:55,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 90.3) internal successors, (903), 10 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:55,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:55,168 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:55,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 23:02:55,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:02:55,374 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:02:55,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:55,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1140974339, now seen corresponding path program 2 times [2023-11-06 23:02:55,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:55,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23715211] [2023-11-06 23:02:55,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:55,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:55,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:55,764 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 23:02:55,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:55,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23715211] [2023-11-06 23:02:55,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23715211] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:02:55,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733891253] [2023-11-06 23:02:55,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:02:55,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:02:55,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:02:55,770 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:02:55,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 23:02:55,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 23:02:55,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:02:55,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 23:02:55,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:02:55,986 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 23:02:55,986 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:02:56,221 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 23:02:56,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733891253] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:02:56,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:02:56,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-06 23:02:56,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449216952] [2023-11-06 23:02:56,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:02:56,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:02:56,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:56,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:02:56,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:02:56,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 241 [2023-11-06 23:02:56,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 65 transitions, 524 flow. Second operand has 6 states, 6 states have (on average 108.33333333333333) internal successors, (650), 6 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:56,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:56,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 241 [2023-11-06 23:02:56,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:56,544 INFO L124 PetriNetUnfolderBase]: 509/744 cut-off events. [2023-11-06 23:02:56,544 INFO L125 PetriNetUnfolderBase]: For 5601/5601 co-relation queries the response was YES. [2023-11-06 23:02:56,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3951 conditions, 744 events. 509/744 cut-off events. For 5601/5601 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2367 event pairs, 43 based on Foata normal form. 48/792 useless extension candidates. Maximal degree in co-relation 2735. Up to 433 conditions per place. [2023-11-06 23:02:56,556 INFO L140 encePairwiseOnDemand]: 238/241 looper letters, 129 selfloop transitions, 13 changer transitions 0/142 dead transitions. [2023-11-06 23:02:56,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 142 transitions, 1458 flow [2023-11-06 23:02:56,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:02:56,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 23:02:56,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 564 transitions. [2023-11-06 23:02:56,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46804979253112033 [2023-11-06 23:02:56,560 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 564 transitions. [2023-11-06 23:02:56,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 564 transitions. [2023-11-06 23:02:56,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:56,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 564 transitions. [2023-11-06 23:02:56,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.8) internal successors, (564), 5 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:56,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:56,567 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:56,567 INFO L175 Difference]: Start difference. First operand has 61 places, 65 transitions, 524 flow. Second operand 5 states and 564 transitions. [2023-11-06 23:02:56,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 142 transitions, 1458 flow [2023-11-06 23:02:56,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 142 transitions, 1139 flow, removed 135 selfloop flow, removed 4 redundant places. [2023-11-06 23:02:56,636 INFO L231 Difference]: Finished difference. Result has 62 places, 66 transitions, 417 flow [2023-11-06 23:02:56,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=417, PETRI_PLACES=62, PETRI_TRANSITIONS=66} [2023-11-06 23:02:56,637 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 36 predicate places. [2023-11-06 23:02:56,638 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 66 transitions, 417 flow [2023-11-06 23:02:56,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 108.33333333333333) internal successors, (650), 6 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:56,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:56,639 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:56,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:02:56,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:02:56,839 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:02:56,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:56,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1079665147, now seen corresponding path program 3 times [2023-11-06 23:02:56,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:56,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472660328] [2023-11-06 23:02:56,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:56,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:56,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:58,591 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:02:58,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:58,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472660328] [2023-11-06 23:02:58,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472660328] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:02:58,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906011193] [2023-11-06 23:02:58,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 23:02:58,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:02:58,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:02:58,599 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:02:58,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 23:02:58,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-06 23:02:58,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:02:58,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 23:02:58,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:02:59,213 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:02:59,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:03:00,501 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:03:00,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906011193] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:03:00,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:03:00,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 24 [2023-11-06 23:03:00,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98486632] [2023-11-06 23:03:00,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:03:00,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-06 23:03:00,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:00,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-06 23:03:00,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2023-11-06 23:03:00,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 241 [2023-11-06 23:03:00,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 66 transitions, 417 flow. Second operand has 26 states, 26 states have (on average 76.23076923076923) internal successors, (1982), 26 states have internal predecessors, (1982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:00,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:03:00,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 241 [2023-11-06 23:03:00,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:03:09,726 INFO L124 PetriNetUnfolderBase]: 4905/7224 cut-off events. [2023-11-06 23:03:09,727 INFO L125 PetriNetUnfolderBase]: For 51554/51554 co-relation queries the response was YES. [2023-11-06 23:03:09,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36711 conditions, 7224 events. 4905/7224 cut-off events. For 51554/51554 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 38603 event pairs, 2 based on Foata normal form. 94/7318 useless extension candidates. Maximal degree in co-relation 23543. Up to 3587 conditions per place. [2023-11-06 23:03:09,843 INFO L140 encePairwiseOnDemand]: 233/241 looper letters, 513 selfloop transitions, 754 changer transitions 11/1278 dead transitions. [2023-11-06 23:03:09,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 1278 transitions, 11269 flow [2023-11-06 23:03:09,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2023-11-06 23:03:09,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2023-11-06 23:03:09,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 6841 transitions. [2023-11-06 23:03:09,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346169416051007 [2023-11-06 23:03:09,888 INFO L72 ComplementDD]: Start complementDD. Operand 82 states and 6841 transitions. [2023-11-06 23:03:09,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 82 states and 6841 transitions. [2023-11-06 23:03:09,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:03:09,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 82 states and 6841 transitions. [2023-11-06 23:03:09,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 83 states, 82 states have (on average 83.42682926829268) internal successors, (6841), 82 states have internal predecessors, (6841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:09,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 83 states, 83 states have (on average 241.0) internal successors, (20003), 83 states have internal predecessors, (20003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:09,986 INFO L81 ComplementDD]: Finished complementDD. Result has 83 states, 83 states have (on average 241.0) internal successors, (20003), 83 states have internal predecessors, (20003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:09,986 INFO L175 Difference]: Start difference. First operand has 62 places, 66 transitions, 417 flow. Second operand 82 states and 6841 transitions. [2023-11-06 23:03:09,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 1278 transitions, 11269 flow [2023-11-06 23:03:10,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 1278 transitions, 11117 flow, removed 58 selfloop flow, removed 1 redundant places. [2023-11-06 23:03:10,153 INFO L231 Difference]: Finished difference. Result has 155 places, 852 transitions, 9522 flow [2023-11-06 23:03:10,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=82, PETRI_FLOW=9522, PETRI_PLACES=155, PETRI_TRANSITIONS=852} [2023-11-06 23:03:10,154 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 129 predicate places. [2023-11-06 23:03:10,155 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 852 transitions, 9522 flow [2023-11-06 23:03:10,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 76.23076923076923) internal successors, (1982), 26 states have internal predecessors, (1982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:10,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:03:10,157 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:03:10,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 23:03:10,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:03:10,365 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:03:10,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:10,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1035303061, now seen corresponding path program 4 times [2023-11-06 23:03:10,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:10,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49081710] [2023-11-06 23:03:10,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:10,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:10,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:11,866 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:03:11,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:11,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49081710] [2023-11-06 23:03:11,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49081710] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:03:11,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030574553] [2023-11-06 23:03:11,870 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 23:03:11,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:03:11,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:11,872 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:03:11,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 23:03:11,980 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 23:03:11,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:03:11,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 23:03:11,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:12,421 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:03:12,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:03:13,512 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:03:13,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030574553] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:03:13,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:03:13,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 22 [2023-11-06 23:03:13,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553658815] [2023-11-06 23:03:13,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:03:13,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-06 23:03:13,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:13,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-06 23:03:13,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2023-11-06 23:03:13,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 241 [2023-11-06 23:03:13,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 852 transitions, 9522 flow. Second operand has 24 states, 24 states have (on average 77.58333333333333) internal successors, (1862), 24 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:13,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:03:13,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 241 [2023-11-06 23:03:13,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:03:23,329 INFO L124 PetriNetUnfolderBase]: 14371/21045 cut-off events. [2023-11-06 23:03:23,329 INFO L125 PetriNetUnfolderBase]: For 172532/172532 co-relation queries the response was YES. [2023-11-06 23:03:23,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127625 conditions, 21045 events. 14371/21045 cut-off events. For 172532/172532 co-relation queries the response was YES. Maximal size of possible extension queue 1170. Compared 131825 event pairs, 53 based on Foata normal form. 81/21126 useless extension candidates. Maximal degree in co-relation 125753. Up to 10207 conditions per place. [2023-11-06 23:03:23,561 INFO L140 encePairwiseOnDemand]: 233/241 looper letters, 901 selfloop transitions, 2355 changer transitions 94/3350 dead transitions. [2023-11-06 23:03:23,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 3350 transitions, 43940 flow [2023-11-06 23:03:23,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-11-06 23:03:23,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2023-11-06 23:03:23,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 4910 transitions. [2023-11-06 23:03:23,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.351266275575905 [2023-11-06 23:03:23,573 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 4910 transitions. [2023-11-06 23:03:23,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 4910 transitions. [2023-11-06 23:03:23,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:03:23,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 4910 transitions. [2023-11-06 23:03:23,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 84.65517241379311) internal successors, (4910), 58 states have internal predecessors, (4910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:23,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 241.0) internal successors, (14219), 59 states have internal predecessors, (14219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:23,613 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 241.0) internal successors, (14219), 59 states have internal predecessors, (14219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:23,613 INFO L175 Difference]: Start difference. First operand has 155 places, 852 transitions, 9522 flow. Second operand 58 states and 4910 transitions. [2023-11-06 23:03:23,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 3350 transitions, 43940 flow [2023-11-06 23:03:29,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 3350 transitions, 32221 flow, removed 5852 selfloop flow, removed 3 redundant places. [2023-11-06 23:03:29,764 INFO L231 Difference]: Finished difference. Result has 237 places, 2918 transitions, 32417 flow [2023-11-06 23:03:29,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=6361, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=852, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=675, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=32417, PETRI_PLACES=237, PETRI_TRANSITIONS=2918} [2023-11-06 23:03:29,766 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 211 predicate places. [2023-11-06 23:03:29,766 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 2918 transitions, 32417 flow [2023-11-06 23:03:29,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 77.58333333333333) internal successors, (1862), 24 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:29,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:03:29,768 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:03:29,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 23:03:29,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:03:29,975 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:03:29,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:29,975 INFO L85 PathProgramCache]: Analyzing trace with hash 687257323, now seen corresponding path program 5 times [2023-11-06 23:03:29,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:29,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445528144] [2023-11-06 23:03:29,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:29,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:31,218 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:03:31,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:31,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445528144] [2023-11-06 23:03:31,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445528144] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:03:31,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108746777] [2023-11-06 23:03:31,220 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 23:03:31,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:03:31,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:31,222 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:03:31,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 23:03:31,361 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-06 23:03:31,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:03:31,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 23:03:31,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:31,753 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:03:31,753 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:03:32,757 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:03:32,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108746777] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:03:32,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:03:32,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 21 [2023-11-06 23:03:32,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127388695] [2023-11-06 23:03:32,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:03:32,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-06 23:03:32,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:32,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-06 23:03:32,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2023-11-06 23:03:33,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 241 [2023-11-06 23:03:33,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 2918 transitions, 32417 flow. Second operand has 23 states, 23 states have (on average 77.43478260869566) internal successors, (1781), 23 states have internal predecessors, (1781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:33,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:03:33,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 241 [2023-11-06 23:03:33,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:04:05,893 INFO L124 PetriNetUnfolderBase]: 31976/46595 cut-off events. [2023-11-06 23:04:05,893 INFO L125 PetriNetUnfolderBase]: For 245674/245674 co-relation queries the response was YES. [2023-11-06 23:04:06,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275524 conditions, 46595 events. 31976/46595 cut-off events. For 245674/245674 co-relation queries the response was YES. Maximal size of possible extension queue 2349. Compared 320525 event pairs, 182 based on Foata normal form. 401/46888 useless extension candidates. Maximal degree in co-relation 273454. Up to 12089 conditions per place. [2023-11-06 23:04:06,493 INFO L140 encePairwiseOnDemand]: 233/241 looper letters, 1729 selfloop transitions, 5982 changer transitions 239/7950 dead transitions. [2023-11-06 23:04:06,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 7950 transitions, 106135 flow [2023-11-06 23:04:06,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-11-06 23:04:06,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2023-11-06 23:04:06,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 5455 transitions. [2023-11-06 23:04:06,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35366960580912865 [2023-11-06 23:04:06,505 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 5455 transitions. [2023-11-06 23:04:06,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 5455 transitions. [2023-11-06 23:04:06,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:04:06,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 5455 transitions. [2023-11-06 23:04:06,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 85.234375) internal successors, (5455), 64 states have internal predecessors, (5455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:06,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 241.0) internal successors, (15665), 65 states have internal predecessors, (15665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:06,544 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 241.0) internal successors, (15665), 65 states have internal predecessors, (15665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:06,544 INFO L175 Difference]: Start difference. First operand has 237 places, 2918 transitions, 32417 flow. Second operand 64 states and 5455 transitions. [2023-11-06 23:04:06,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 7950 transitions, 106135 flow [2023-11-06 23:04:40,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 7950 transitions, 101832 flow, removed 2142 selfloop flow, removed 2 redundant places. [2023-11-06 23:04:40,663 INFO L231 Difference]: Finished difference. Result has 335 places, 7206 transitions, 105012 flow [2023-11-06 23:04:40,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=30942, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2912, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=105012, PETRI_PLACES=335, PETRI_TRANSITIONS=7206} [2023-11-06 23:04:40,667 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 309 predicate places. [2023-11-06 23:04:40,667 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 7206 transitions, 105012 flow [2023-11-06 23:04:40,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 77.43478260869566) internal successors, (1781), 23 states have internal predecessors, (1781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:40,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:04:40,668 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:04:40,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 23:04:40,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-06 23:04:40,872 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:04:40,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:40,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1913727305, now seen corresponding path program 6 times [2023-11-06 23:04:40,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:40,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904821363] [2023-11-06 23:04:40,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:40,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:41,899 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:04:41,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:04:41,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904821363] [2023-11-06 23:04:41,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904821363] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:04:41,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760517637] [2023-11-06 23:04:41,900 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 23:04:41,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:04:41,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:04:41,916 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:04:41,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc89338e-4feb-4194-89a6-256c4488f894/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 23:04:42,033 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-06 23:04:42,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:04:42,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 23:04:42,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:04:42,391 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:04:42,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:04:43,186 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:04:43,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760517637] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:04:43,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:04:43,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 21 [2023-11-06 23:04:43,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997463505] [2023-11-06 23:04:43,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:04:43,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-06 23:04:43,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:04:43,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-06 23:04:43,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2023-11-06 23:04:43,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 241 [2023-11-06 23:04:43,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 7206 transitions, 105012 flow. Second operand has 23 states, 23 states have (on average 77.43478260869566) internal successors, (1781), 23 states have internal predecessors, (1781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:43,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:04:43,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 241 [2023-11-06 23:04:43,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:06:26,899 INFO L124 PetriNetUnfolderBase]: 36468/53099 cut-off events. [2023-11-06 23:06:26,899 INFO L125 PetriNetUnfolderBase]: For 401841/401841 co-relation queries the response was YES. [2023-11-06 23:06:27,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375427 conditions, 53099 events. 36468/53099 cut-off events. For 401841/401841 co-relation queries the response was YES. Maximal size of possible extension queue 2696. Compared 371068 event pairs, 559 based on Foata normal form. 6/53097 useless extension candidates. Maximal degree in co-relation 373966. Up to 19030 conditions per place. [2023-11-06 23:06:27,878 INFO L140 encePairwiseOnDemand]: 233/241 looper letters, 3888 selfloop transitions, 5379 changer transitions 172/9439 dead transitions. [2023-11-06 23:06:27,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 9439 transitions, 155796 flow [2023-11-06 23:06:27,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-06 23:06:27,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-11-06 23:06:27,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 3978 transitions. [2023-11-06 23:06:27,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34387966804979253 [2023-11-06 23:06:27,886 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 3978 transitions. [2023-11-06 23:06:27,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 3978 transitions. [2023-11-06 23:06:27,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:06:27,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 3978 transitions. [2023-11-06 23:06:27,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 82.875) internal successors, (3978), 48 states have internal predecessors, (3978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:27,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 241.0) internal successors, (11809), 49 states have internal predecessors, (11809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:27,911 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 241.0) internal successors, (11809), 49 states have internal predecessors, (11809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:27,911 INFO L175 Difference]: Start difference. First operand has 335 places, 7206 transitions, 105012 flow. Second operand 48 states and 3978 transitions. [2023-11-06 23:06:27,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 9439 transitions, 155796 flow