./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2ab7cb-6cc7-4332-a688-8456461f8156/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2ab7cb-6cc7-4332-a688-8456461f8156/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_1c2ab7cb-6cc7-4332-a688-8456461f8156/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2ab7cb-6cc7-4332-a688-8456461f8156/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2ab7cb-6cc7-4332-a688-8456461f8156/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_1c2ab7cb-6cc7-4332-a688-8456461f8156/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 55711f117aca8cc6da45707674eed41f8615ce4fb09ace088988b9afc0dc0851 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:20:29,210 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:20:29,334 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2ab7cb-6cc7-4332-a688-8456461f8156/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:20:29,338 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:20:29,339 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:20:29,385 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:20:29,387 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:20:29,388 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:20:29,389 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:20:29,394 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:20:29,396 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:20:29,396 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:20:29,397 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:20:29,399 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:20:29,399 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:20:29,400 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:20:29,400 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:20:29,400 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:20:29,401 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:20:29,401 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:20:29,401 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:20:29,402 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:20:29,402 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:20:29,403 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:20:29,403 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:20:29,404 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:20:29,404 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:20:29,405 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:20:29,405 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:20:29,406 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:20:29,407 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:20:29,407 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:20:29,408 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:20:29,408 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:20:29,408 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:20:29,408 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:20:29,408 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:20:29,409 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:20:29,409 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:20:29,409 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_1c2ab7cb-6cc7-4332-a688-8456461f8156/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2ab7cb-6cc7-4332-a688-8456461f8156/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55711f117aca8cc6da45707674eed41f8615ce4fb09ace088988b9afc0dc0851 [2023-11-06 22:20:29,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:20:29,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:20:29,765 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:20:29,767 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:20:29,768 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:20:29,770 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2ab7cb-6cc7-4332-a688-8456461f8156/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-06 22:20:32,971 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:20:33,240 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:20:33,240 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2ab7cb-6cc7-4332-a688-8456461f8156/sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-06 22:20:33,260 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2ab7cb-6cc7-4332-a688-8456461f8156/bin/uautomizer-verify-WvqO1wxjHP/data/a0bf389dc/0c349028683b4fe89f08d330437e4aaa/FLAG734a3d141 [2023-11-06 22:20:33,280 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2ab7cb-6cc7-4332-a688-8456461f8156/bin/uautomizer-verify-WvqO1wxjHP/data/a0bf389dc/0c349028683b4fe89f08d330437e4aaa [2023-11-06 22:20:33,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:20:33,285 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:20:33,287 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:20:33,287 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:20:33,293 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:20:33,294 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:20:33" (1/1) ... [2023-11-06 22:20:33,295 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50eedd08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:33, skipping insertion in model container [2023-11-06 22:20:33,295 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:20:33" (1/1) ... [2023-11-06 22:20:33,360 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:20:33,526 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_1c2ab7cb-6cc7-4332-a688-8456461f8156/sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-06 22:20:33,808 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:20:33,824 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:20:33,841 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_1c2ab7cb-6cc7-4332-a688-8456461f8156/sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-06 22:20:33,893 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:20:33,943 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:20:33,944 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:20:33,952 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:20:33,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:33 WrapperNode [2023-11-06 22:20:33,953 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:20:33,955 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:20:33,955 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:20:33,956 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:20:33,964 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:33" (1/1) ... [2023-11-06 22:20:34,005 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:33" (1/1) ... [2023-11-06 22:20:34,041 INFO L138 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2023-11-06 22:20:34,042 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:20:34,043 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:20:34,043 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:20:34,043 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:20:34,053 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:33" (1/1) ... [2023-11-06 22:20:34,054 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:33" (1/1) ... [2023-11-06 22:20:34,069 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:33" (1/1) ... [2023-11-06 22:20:34,070 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:33" (1/1) ... [2023-11-06 22:20:34,082 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:33" (1/1) ... [2023-11-06 22:20:34,094 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:33" (1/1) ... [2023-11-06 22:20:34,096 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:33" (1/1) ... [2023-11-06 22:20:34,097 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:33" (1/1) ... [2023-11-06 22:20:34,107 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:20:34,108 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:20:34,108 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:20:34,108 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:20:34,109 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:33" (1/1) ... [2023-11-06 22:20:34,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:20:34,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2ab7cb-6cc7-4332-a688-8456461f8156/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:34,169 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2ab7cb-6cc7-4332-a688-8456461f8156/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:20:34,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2ab7cb-6cc7-4332-a688-8456461f8156/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:20:34,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:20:34,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:20:34,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:20:34,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:20:34,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:20:34,217 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-06 22:20:34,217 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-06 22:20:34,217 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-06 22:20:34,217 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-06 22:20:34,218 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-06 22:20:34,219 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-06 22:20:34,220 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-06 22:20:34,220 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-06 22:20:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:20:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:20:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:20:34,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:20:34,223 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 22:20:34,434 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:20:34,438 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:20:34,669 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:20:34,678 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:20:34,678 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:20:34,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:20:34 BoogieIcfgContainer [2023-11-06 22:20:34,681 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:20:34,684 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:20:34,684 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:20:34,687 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:20:34,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:20:33" (1/3) ... [2023-11-06 22:20:34,688 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59068e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:20:34, skipping insertion in model container [2023-11-06 22:20:34,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:33" (2/3) ... [2023-11-06 22:20:34,689 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59068e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:20:34, skipping insertion in model container [2023-11-06 22:20:34,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:20:34" (3/3) ... [2023-11-06 22:20:34,691 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-06 22:20:34,700 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:20:34,711 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:20:34,711 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:20:34,712 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:20:34,788 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:20:34,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 101 transitions, 218 flow [2023-11-06 22:20:34,892 INFO L124 PetriNetUnfolderBase]: 2/97 cut-off events. [2023-11-06 22:20:34,892 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:20:34,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 97 events. 2/97 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2023-11-06 22:20:34,898 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 101 transitions, 218 flow [2023-11-06 22:20:34,903 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 80 transitions, 172 flow [2023-11-06 22:20:34,912 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:20:34,931 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 80 transitions, 172 flow [2023-11-06 22:20:34,940 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 80 transitions, 172 flow [2023-11-06 22:20:34,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 80 transitions, 172 flow [2023-11-06 22:20:34,993 INFO L124 PetriNetUnfolderBase]: 1/80 cut-off events. [2023-11-06 22:20:34,998 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:20:34,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 80 events. 1/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 45 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 66. Up to 2 conditions per place. [2023-11-06 22:20:35,003 INFO L119 LiptonReduction]: Number of co-enabled transitions 1586 [2023-11-06 22:20:37,672 INFO L134 LiptonReduction]: Checked pairs total: 2771 [2023-11-06 22:20:37,673 INFO L136 LiptonReduction]: Total number of compositions: 65 [2023-11-06 22:20:37,706 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:20:37,714 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;@698f6d46, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:20:37,715 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-06 22:20:37,723 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:20:37,725 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2023-11-06 22:20:37,725 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:20:37,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:37,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:37,728 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:20:37,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:37,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1574464981, now seen corresponding path program 1 times [2023-11-06 22:20:37,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:37,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561690309] [2023-11-06 22:20:37,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:37,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:38,387 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 22:20:38,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:38,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561690309] [2023-11-06 22:20:38,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561690309] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:38,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:38,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:20:38,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721489758] [2023-11-06 22:20:38,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:38,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:20:38,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:38,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:20:38,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:20:38,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 166 [2023-11-06 22:20:38,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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 22:20:38,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:38,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 166 [2023-11-06 22:20:38,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:38,970 INFO L124 PetriNetUnfolderBase]: 2019/2943 cut-off events. [2023-11-06 22:20:38,971 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2023-11-06 22:20:38,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6086 conditions, 2943 events. 2019/2943 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 13585 event pairs, 796 based on Foata normal form. 109/3052 useless extension candidates. Maximal degree in co-relation 6074. Up to 1819 conditions per place. [2023-11-06 22:20:39,002 INFO L140 encePairwiseOnDemand]: 157/166 looper letters, 30 selfloop transitions, 7 changer transitions 0/37 dead transitions. [2023-11-06 22:20:39,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 169 flow [2023-11-06 22:20:39,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:20:39,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:20:39,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2023-11-06 22:20:39,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5863453815261044 [2023-11-06 22:20:39,025 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 292 transitions. [2023-11-06 22:20:39,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 292 transitions. [2023-11-06 22:20:39,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:39,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 292 transitions. [2023-11-06 22:20:39,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 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 22:20:39,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 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 22:20:39,046 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 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 22:20:39,048 INFO L175 Difference]: Start difference. First operand has 33 places, 21 transitions, 54 flow. Second operand 3 states and 292 transitions. [2023-11-06 22:20:39,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 169 flow [2023-11-06 22:20:39,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 37 transitions, 162 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:20:39,062 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 102 flow [2023-11-06 22:20:39,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2023-11-06 22:20:39,069 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2023-11-06 22:20:39,070 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 102 flow [2023-11-06 22:20:39,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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 22:20:39,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:39,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:39,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:20:39,072 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:20:39,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:39,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1563775131, now seen corresponding path program 1 times [2023-11-06 22:20:39,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:39,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338660563] [2023-11-06 22:20:39,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:39,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:39,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:39,413 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 22:20:39,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:39,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338660563] [2023-11-06 22:20:39,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338660563] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:39,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:39,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:20:39,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774449054] [2023-11-06 22:20:39,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:39,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:20:39,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:39,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:20:39,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:20:39,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 166 [2023-11-06 22:20:39,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 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 22:20:39,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:39,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 166 [2023-11-06 22:20:39,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:39,838 INFO L124 PetriNetUnfolderBase]: 1886/2759 cut-off events. [2023-11-06 22:20:39,838 INFO L125 PetriNetUnfolderBase]: For 1174/1174 co-relation queries the response was YES. [2023-11-06 22:20:39,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7639 conditions, 2759 events. 1886/2759 cut-off events. For 1174/1174 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12525 event pairs, 269 based on Foata normal form. 33/2792 useless extension candidates. Maximal degree in co-relation 7627. Up to 1394 conditions per place. [2023-11-06 22:20:39,863 INFO L140 encePairwiseOnDemand]: 158/166 looper letters, 38 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2023-11-06 22:20:39,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 46 transitions, 260 flow [2023-11-06 22:20:39,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:20:39,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:20:39,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 379 transitions. [2023-11-06 22:20:39,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5707831325301205 [2023-11-06 22:20:39,871 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 379 transitions. [2023-11-06 22:20:39,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 379 transitions. [2023-11-06 22:20:39,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:39,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 379 transitions. [2023-11-06 22:20:39,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:39,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 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 22:20:39,885 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 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 22:20:39,886 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 102 flow. Second operand 4 states and 379 transitions. [2023-11-06 22:20:39,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 46 transitions, 260 flow [2023-11-06 22:20:39,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 46 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:20:39,900 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 146 flow [2023-11-06 22:20:39,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=37, PETRI_TRANSITIONS=30} [2023-11-06 22:20:39,907 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2023-11-06 22:20:39,907 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 146 flow [2023-11-06 22:20:39,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 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 22:20:39,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:39,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:39,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:20:39,909 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:20:39,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:39,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1563775100, now seen corresponding path program 1 times [2023-11-06 22:20:39,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:39,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303034204] [2023-11-06 22:20:39,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:39,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:40,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:40,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:40,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303034204] [2023-11-06 22:20:40,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303034204] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:40,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:40,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:20:40,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108910582] [2023-11-06 22:20:40,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:40,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:20:40,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:40,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:20:40,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:20:40,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 166 [2023-11-06 22:20:40,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 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 22:20:40,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:40,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 166 [2023-11-06 22:20:40,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:40,532 INFO L124 PetriNetUnfolderBase]: 1794/2633 cut-off events. [2023-11-06 22:20:40,532 INFO L125 PetriNetUnfolderBase]: For 2515/2515 co-relation queries the response was YES. [2023-11-06 22:20:40,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8003 conditions, 2633 events. 1794/2633 cut-off events. For 2515/2515 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 12170 event pairs, 287 based on Foata normal form. 16/2649 useless extension candidates. Maximal degree in co-relation 7988. Up to 1438 conditions per place. [2023-11-06 22:20:40,555 INFO L140 encePairwiseOnDemand]: 158/166 looper letters, 46 selfloop transitions, 16 changer transitions 0/62 dead transitions. [2023-11-06 22:20:40,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 62 transitions, 406 flow [2023-11-06 22:20:40,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:20:40,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:20:40,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 387 transitions. [2023-11-06 22:20:40,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5828313253012049 [2023-11-06 22:20:40,558 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 387 transitions. [2023-11-06 22:20:40,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 387 transitions. [2023-11-06 22:20:40,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:40,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 387 transitions. [2023-11-06 22:20:40,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 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 22:20:40,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 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 22:20:40,563 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 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 22:20:40,563 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 146 flow. Second operand 4 states and 387 transitions. [2023-11-06 22:20:40,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 62 transitions, 406 flow [2023-11-06 22:20:40,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 62 transitions, 401 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:20:40,573 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 296 flow [2023-11-06 22:20:40,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=296, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2023-11-06 22:20:40,574 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2023-11-06 22:20:40,574 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 296 flow [2023-11-06 22:20:40,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 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 22:20:40,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:40,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:40,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:20:40,576 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:20:40,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:40,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1232383023, now seen corresponding path program 1 times [2023-11-06 22:20:40,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:40,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410742336] [2023-11-06 22:20:40,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:40,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:40,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:40,692 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 22:20:40,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:40,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410742336] [2023-11-06 22:20:40,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410742336] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:40,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:40,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:20:40,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590707714] [2023-11-06 22:20:40,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:40,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:20:40,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:40,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:20:40,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:20:40,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 166 [2023-11-06 22:20:40,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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 22:20:40,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:40,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 166 [2023-11-06 22:20:40,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:41,001 INFO L124 PetriNetUnfolderBase]: 1384/2144 cut-off events. [2023-11-06 22:20:41,002 INFO L125 PetriNetUnfolderBase]: For 4799/4906 co-relation queries the response was YES. [2023-11-06 22:20:41,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7530 conditions, 2144 events. 1384/2144 cut-off events. For 4799/4906 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 10530 event pairs, 641 based on Foata normal form. 67/2192 useless extension candidates. Maximal degree in co-relation 7511. Up to 1639 conditions per place. [2023-11-06 22:20:41,028 INFO L140 encePairwiseOnDemand]: 163/166 looper letters, 43 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2023-11-06 22:20:41,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 471 flow [2023-11-06 22:20:41,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:20:41,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:20:41,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2023-11-06 22:20:41,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6184738955823293 [2023-11-06 22:20:41,031 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 308 transitions. [2023-11-06 22:20:41,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 308 transitions. [2023-11-06 22:20:41,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:41,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 308 transitions. [2023-11-06 22:20:41,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 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 22:20:41,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 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 22:20:41,036 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 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 22:20:41,036 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 296 flow. Second operand 3 states and 308 transitions. [2023-11-06 22:20:41,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 471 flow [2023-11-06 22:20:41,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 57 transitions, 471 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:20:41,053 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 313 flow [2023-11-06 22:20:41,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=313, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2023-11-06 22:20:41,055 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 12 predicate places. [2023-11-06 22:20:41,055 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 313 flow [2023-11-06 22:20:41,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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 22:20:41,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:41,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:41,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:20:41,056 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:20:41,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:41,057 INFO L85 PathProgramCache]: Analyzing trace with hash 450577302, now seen corresponding path program 1 times [2023-11-06 22:20:41,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:41,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101794331] [2023-11-06 22:20:41,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:41,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:41,175 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 22:20:41,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:41,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101794331] [2023-11-06 22:20:41,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101794331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:41,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:41,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:20:41,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230983866] [2023-11-06 22:20:41,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:41,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:20:41,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:41,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:20:41,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:20:41,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 166 [2023-11-06 22:20:41,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 313 flow. Second operand has 4 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 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 22:20:41,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:41,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 166 [2023-11-06 22:20:41,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:41,704 INFO L124 PetriNetUnfolderBase]: 2225/3471 cut-off events. [2023-11-06 22:20:41,704 INFO L125 PetriNetUnfolderBase]: For 7976/8082 co-relation queries the response was YES. [2023-11-06 22:20:41,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11671 conditions, 3471 events. 2225/3471 cut-off events. For 7976/8082 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 19270 event pairs, 717 based on Foata normal form. 188/3644 useless extension candidates. Maximal degree in co-relation 11649. Up to 1515 conditions per place. [2023-11-06 22:20:41,734 INFO L140 encePairwiseOnDemand]: 162/166 looper letters, 40 selfloop transitions, 8 changer transitions 23/74 dead transitions. [2023-11-06 22:20:41,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 74 transitions, 584 flow [2023-11-06 22:20:41,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:20:41,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:20:41,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 498 transitions. [2023-11-06 22:20:41,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2023-11-06 22:20:41,738 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 498 transitions. [2023-11-06 22:20:41,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 498 transitions. [2023-11-06 22:20:41,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:41,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 498 transitions. [2023-11-06 22:20:41,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 99.6) internal successors, (498), 5 states have internal predecessors, (498), 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 22:20:41,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 166.0) internal successors, (996), 6 states have internal predecessors, (996), 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 22:20:41,744 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 166.0) internal successors, (996), 6 states have internal predecessors, (996), 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 22:20:41,744 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 313 flow. Second operand 5 states and 498 transitions. [2023-11-06 22:20:41,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 74 transitions, 584 flow [2023-11-06 22:20:41,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 74 transitions, 574 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:20:41,774 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 314 flow [2023-11-06 22:20:41,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=314, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2023-11-06 22:20:41,775 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 17 predicate places. [2023-11-06 22:20:41,775 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 314 flow [2023-11-06 22:20:41,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 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 22:20:41,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:41,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:41,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:20:41,776 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:20:41,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:41,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1144096109, now seen corresponding path program 1 times [2023-11-06 22:20:41,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:41,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252800017] [2023-11-06 22:20:41,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:41,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:41,925 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 22:20:41,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:41,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252800017] [2023-11-06 22:20:41,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252800017] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:41,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:41,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:20:41,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512608618] [2023-11-06 22:20:41,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:41,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:20:41,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:41,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:20:41,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:20:41,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 166 [2023-11-06 22:20:41,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 314 flow. Second operand has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 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 22:20:41,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:41,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 166 [2023-11-06 22:20:41,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:42,295 INFO L124 PetriNetUnfolderBase]: 1703/2568 cut-off events. [2023-11-06 22:20:42,295 INFO L125 PetriNetUnfolderBase]: For 7617/7617 co-relation queries the response was YES. [2023-11-06 22:20:42,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9314 conditions, 2568 events. 1703/2568 cut-off events. For 7617/7617 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 11883 event pairs, 219 based on Foata normal form. 6/2574 useless extension candidates. Maximal degree in co-relation 9290. Up to 1239 conditions per place. [2023-11-06 22:20:42,345 INFO L140 encePairwiseOnDemand]: 159/166 looper letters, 43 selfloop transitions, 20 changer transitions 1/64 dead transitions. [2023-11-06 22:20:42,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 64 transitions, 605 flow [2023-11-06 22:20:42,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:20:42,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:20:42,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 380 transitions. [2023-11-06 22:20:42,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.572289156626506 [2023-11-06 22:20:42,348 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 380 transitions. [2023-11-06 22:20:42,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 380 transitions. [2023-11-06 22:20:42,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:42,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 380 transitions. [2023-11-06 22:20:42,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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 22:20:42,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 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 22:20:42,353 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 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 22:20:42,353 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 314 flow. Second operand 4 states and 380 transitions. [2023-11-06 22:20:42,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 64 transitions, 605 flow [2023-11-06 22:20:42,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 64 transitions, 586 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-06 22:20:42,379 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 488 flow [2023-11-06 22:20:42,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=488, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2023-11-06 22:20:42,380 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 18 predicate places. [2023-11-06 22:20:42,380 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 488 flow [2023-11-06 22:20:42,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 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 22:20:42,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:42,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:42,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:20:42,382 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:20:42,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:42,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1282091339, now seen corresponding path program 1 times [2023-11-06 22:20:42,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:42,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449914888] [2023-11-06 22:20:42,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:42,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:42,519 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 22:20:42,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:42,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449914888] [2023-11-06 22:20:42,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449914888] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:42,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:42,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:20:42,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314192657] [2023-11-06 22:20:42,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:42,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:20:42,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:42,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:20:42,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:20:42,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 166 [2023-11-06 22:20:42,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 488 flow. Second operand has 4 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 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 22:20:42,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:42,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 166 [2023-11-06 22:20:42,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:43,037 INFO L124 PetriNetUnfolderBase]: 2115/3306 cut-off events. [2023-11-06 22:20:43,037 INFO L125 PetriNetUnfolderBase]: For 12782/12888 co-relation queries the response was YES. [2023-11-06 22:20:43,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12476 conditions, 3306 events. 2115/3306 cut-off events. For 12782/12888 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 17822 event pairs, 547 based on Foata normal form. 134/3380 useless extension candidates. Maximal degree in co-relation 12450. Up to 1522 conditions per place. [2023-11-06 22:20:43,066 INFO L140 encePairwiseOnDemand]: 161/166 looper letters, 46 selfloop transitions, 8 changer transitions 15/74 dead transitions. [2023-11-06 22:20:43,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 74 transitions, 803 flow [2023-11-06 22:20:43,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:20:43,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:20:43,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 397 transitions. [2023-11-06 22:20:43,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5978915662650602 [2023-11-06 22:20:43,070 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 397 transitions. [2023-11-06 22:20:43,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 397 transitions. [2023-11-06 22:20:43,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:43,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 397 transitions. [2023-11-06 22:20:43,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 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 22:20:43,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 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 22:20:43,076 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 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 22:20:43,076 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 488 flow. Second operand 4 states and 397 transitions. [2023-11-06 22:20:43,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 74 transitions, 803 flow [2023-11-06 22:20:43,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 74 transitions, 803 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:20:43,118 INFO L231 Difference]: Finished difference. Result has 55 places, 40 transitions, 408 flow [2023-11-06 22:20:43,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=408, PETRI_PLACES=55, PETRI_TRANSITIONS=40} [2023-11-06 22:20:43,119 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 22 predicate places. [2023-11-06 22:20:43,119 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 40 transitions, 408 flow [2023-11-06 22:20:43,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 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 22:20:43,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:43,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:43,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:20:43,120 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:20:43,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:43,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1395946910, now seen corresponding path program 1 times [2023-11-06 22:20:43,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:43,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223192614] [2023-11-06 22:20:43,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:43,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:43,308 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 22:20:43,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:43,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223192614] [2023-11-06 22:20:43,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223192614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:43,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:43,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:20:43,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217782597] [2023-11-06 22:20:43,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:43,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:20:43,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:43,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:20:43,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:20:43,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 166 [2023-11-06 22:20:43,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 40 transitions, 408 flow. Second operand has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 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 22:20:43,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:43,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 166 [2023-11-06 22:20:43,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:43,664 INFO L124 PetriNetUnfolderBase]: 1431/2196 cut-off events. [2023-11-06 22:20:43,664 INFO L125 PetriNetUnfolderBase]: For 8098/8098 co-relation queries the response was YES. [2023-11-06 22:20:43,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8421 conditions, 2196 events. 1431/2196 cut-off events. For 8098/8098 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 10572 event pairs, 352 based on Foata normal form. 36/2232 useless extension candidates. Maximal degree in co-relation 8392. Up to 1116 conditions per place. [2023-11-06 22:20:43,680 INFO L140 encePairwiseOnDemand]: 159/166 looper letters, 42 selfloop transitions, 16 changer transitions 3/61 dead transitions. [2023-11-06 22:20:43,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 638 flow [2023-11-06 22:20:43,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:20:43,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:20:43,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 381 transitions. [2023-11-06 22:20:43,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5737951807228916 [2023-11-06 22:20:43,683 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 381 transitions. [2023-11-06 22:20:43,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 381 transitions. [2023-11-06 22:20:43,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:43,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 381 transitions. [2023-11-06 22:20:43,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 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 22:20:43,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 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 22:20:43,687 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 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 22:20:43,687 INFO L175 Difference]: Start difference. First operand has 55 places, 40 transitions, 408 flow. Second operand 4 states and 381 transitions. [2023-11-06 22:20:43,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 638 flow [2023-11-06 22:20:43,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 61 transitions, 561 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-11-06 22:20:43,709 INFO L231 Difference]: Finished difference. Result has 54 places, 40 transitions, 422 flow [2023-11-06 22:20:43,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=422, PETRI_PLACES=54, PETRI_TRANSITIONS=40} [2023-11-06 22:20:43,713 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 21 predicate places. [2023-11-06 22:20:43,713 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 40 transitions, 422 flow [2023-11-06 22:20:43,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 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 22:20:43,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:43,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:43,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:20:43,714 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:20:43,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:43,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1090868893, now seen corresponding path program 2 times [2023-11-06 22:20:43,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:43,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646463841] [2023-11-06 22:20:43,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:43,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:43,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:43,869 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 22:20:43,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:43,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646463841] [2023-11-06 22:20:43,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646463841] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:43,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:43,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:20:43,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85570564] [2023-11-06 22:20:43,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:43,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:20:43,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:43,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:20:43,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:20:43,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 166 [2023-11-06 22:20:43,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 40 transitions, 422 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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 22:20:43,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:43,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 166 [2023-11-06 22:20:43,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:44,087 INFO L124 PetriNetUnfolderBase]: 808/1336 cut-off events. [2023-11-06 22:20:44,087 INFO L125 PetriNetUnfolderBase]: For 5058/5125 co-relation queries the response was YES. [2023-11-06 22:20:44,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4864 conditions, 1336 events. 808/1336 cut-off events. For 5058/5125 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6773 event pairs, 287 based on Foata normal form. 78/1382 useless extension candidates. Maximal degree in co-relation 4836. Up to 1192 conditions per place. [2023-11-06 22:20:44,098 INFO L140 encePairwiseOnDemand]: 160/166 looper letters, 48 selfloop transitions, 5 changer transitions 0/62 dead transitions. [2023-11-06 22:20:44,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 718 flow [2023-11-06 22:20:44,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:20:44,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:20:44,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2023-11-06 22:20:44,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5983935742971888 [2023-11-06 22:20:44,101 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 298 transitions. [2023-11-06 22:20:44,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 298 transitions. [2023-11-06 22:20:44,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:44,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 298 transitions. [2023-11-06 22:20:44,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 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 22:20:44,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 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 22:20:44,105 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 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 22:20:44,105 INFO L175 Difference]: Start difference. First operand has 54 places, 40 transitions, 422 flow. Second operand 3 states and 298 transitions. [2023-11-06 22:20:44,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 718 flow [2023-11-06 22:20:44,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 62 transitions, 712 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-06 22:20:44,116 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 451 flow [2023-11-06 22:20:44,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=451, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2023-11-06 22:20:44,117 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 24 predicate places. [2023-11-06 22:20:44,118 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 451 flow [2023-11-06 22:20:44,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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 22:20:44,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:44,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:44,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:20:44,119 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:20:44,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:44,119 INFO L85 PathProgramCache]: Analyzing trace with hash -351323688, now seen corresponding path program 1 times [2023-11-06 22:20:44,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:44,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4445317] [2023-11-06 22:20:44,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:44,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:44,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:44,270 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 22:20:44,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:44,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4445317] [2023-11-06 22:20:44,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4445317] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:44,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:44,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:20:44,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867680518] [2023-11-06 22:20:44,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:44,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:20:44,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:44,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:20:44,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:20:44,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 166 [2023-11-06 22:20:44,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 451 flow. Second operand has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 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 22:20:44,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:44,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 166 [2023-11-06 22:20:44,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:44,475 INFO L124 PetriNetUnfolderBase]: 561/978 cut-off events. [2023-11-06 22:20:44,475 INFO L125 PetriNetUnfolderBase]: For 3632/3740 co-relation queries the response was YES. [2023-11-06 22:20:44,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4288 conditions, 978 events. 561/978 cut-off events. For 3632/3740 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4867 event pairs, 73 based on Foata normal form. 116/1074 useless extension candidates. Maximal degree in co-relation 4257. Up to 646 conditions per place. [2023-11-06 22:20:44,484 INFO L140 encePairwiseOnDemand]: 160/166 looper letters, 60 selfloop transitions, 9 changer transitions 0/78 dead transitions. [2023-11-06 22:20:44,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 78 transitions, 911 flow [2023-11-06 22:20:44,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:20:44,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:20:44,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 397 transitions. [2023-11-06 22:20:44,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5978915662650602 [2023-11-06 22:20:44,487 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 397 transitions. [2023-11-06 22:20:44,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 397 transitions. [2023-11-06 22:20:44,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:44,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 397 transitions. [2023-11-06 22:20:44,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 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 22:20:44,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 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 22:20:44,491 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 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 22:20:44,492 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 451 flow. Second operand 4 states and 397 transitions. [2023-11-06 22:20:44,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 78 transitions, 911 flow [2023-11-06 22:20:44,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 78 transitions, 906 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:20:44,504 INFO L231 Difference]: Finished difference. Result has 60 places, 48 transitions, 498 flow [2023-11-06 22:20:44,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=498, PETRI_PLACES=60, PETRI_TRANSITIONS=48} [2023-11-06 22:20:44,506 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2023-11-06 22:20:44,506 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 48 transitions, 498 flow [2023-11-06 22:20:44,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 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 22:20:44,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:44,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:44,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:20:44,507 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:20:44,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:44,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1993848666, now seen corresponding path program 1 times [2023-11-06 22:20:44,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:44,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246421147] [2023-11-06 22:20:44,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:44,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:44,653 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 22:20:44,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:44,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246421147] [2023-11-06 22:20:44,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246421147] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:44,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:44,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:20:44,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863229592] [2023-11-06 22:20:44,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:44,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:20:44,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:44,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:20:44,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:20:44,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 166 [2023-11-06 22:20:44,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 48 transitions, 498 flow. Second operand has 5 states, 5 states have (on average 92.2) internal successors, (461), 5 states have internal predecessors, (461), 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 22:20:44,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:44,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 166 [2023-11-06 22:20:44,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:44,841 INFO L124 PetriNetUnfolderBase]: 411/728 cut-off events. [2023-11-06 22:20:44,842 INFO L125 PetriNetUnfolderBase]: For 2997/3198 co-relation queries the response was YES. [2023-11-06 22:20:44,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3735 conditions, 728 events. 411/728 cut-off events. For 2997/3198 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3469 event pairs, 24 based on Foata normal form. 137/844 useless extension candidates. Maximal degree in co-relation 3702. Up to 423 conditions per place. [2023-11-06 22:20:44,848 INFO L140 encePairwiseOnDemand]: 160/166 looper letters, 66 selfloop transitions, 13 changer transitions 4/91 dead transitions. [2023-11-06 22:20:44,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 91 transitions, 1076 flow [2023-11-06 22:20:44,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:20:44,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:20:44,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 496 transitions. [2023-11-06 22:20:44,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5975903614457831 [2023-11-06 22:20:44,851 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 496 transitions. [2023-11-06 22:20:44,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 496 transitions. [2023-11-06 22:20:44,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:44,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 496 transitions. [2023-11-06 22:20:44,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 99.2) internal successors, (496), 5 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:44,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 166.0) internal successors, (996), 6 states have internal predecessors, (996), 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 22:20:44,857 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 166.0) internal successors, (996), 6 states have internal predecessors, (996), 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 22:20:44,857 INFO L175 Difference]: Start difference. First operand has 60 places, 48 transitions, 498 flow. Second operand 5 states and 496 transitions. [2023-11-06 22:20:44,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 91 transitions, 1076 flow [2023-11-06 22:20:44,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 91 transitions, 1058 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-06 22:20:44,867 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 540 flow [2023-11-06 22:20:44,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=540, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2023-11-06 22:20:44,868 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 30 predicate places. [2023-11-06 22:20:44,868 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 540 flow [2023-11-06 22:20:44,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.2) internal successors, (461), 5 states have internal predecessors, (461), 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 22:20:44,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:44,870 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 22:20:44,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:20:44,870 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:20:44,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:44,871 INFO L85 PathProgramCache]: Analyzing trace with hash 6726608, now seen corresponding path program 1 times [2023-11-06 22:20:44,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:44,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802745058] [2023-11-06 22:20:44,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:44,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:45,076 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 22:20:45,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:45,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802745058] [2023-11-06 22:20:45,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802745058] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:45,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:45,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:20:45,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142283078] [2023-11-06 22:20:45,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:45,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:20:45,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:45,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:20:45,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:20:45,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 166 [2023-11-06 22:20:45,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 51 transitions, 540 flow. Second operand has 5 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 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 22:20:45,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:45,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 166 [2023-11-06 22:20:45,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:45,320 INFO L124 PetriNetUnfolderBase]: 561/992 cut-off events. [2023-11-06 22:20:45,320 INFO L125 PetriNetUnfolderBase]: For 5830/5830 co-relation queries the response was YES. [2023-11-06 22:20:45,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5530 conditions, 992 events. 561/992 cut-off events. For 5830/5830 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4738 event pairs, 62 based on Foata normal form. 6/998 useless extension candidates. Maximal degree in co-relation 5496. Up to 466 conditions per place. [2023-11-06 22:20:45,328 INFO L140 encePairwiseOnDemand]: 158/166 looper letters, 52 selfloop transitions, 15 changer transitions 65/132 dead transitions. [2023-11-06 22:20:45,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 132 transitions, 1460 flow [2023-11-06 22:20:45,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:20:45,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:20:45,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 565 transitions. [2023-11-06 22:20:45,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5672690763052208 [2023-11-06 22:20:45,332 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 565 transitions. [2023-11-06 22:20:45,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 565 transitions. [2023-11-06 22:20:45,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:45,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 565 transitions. [2023-11-06 22:20:45,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.16666666666667) internal successors, (565), 6 states have internal predecessors, (565), 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 22:20:45,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 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 22:20:45,339 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 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 22:20:45,340 INFO L175 Difference]: Start difference. First operand has 63 places, 51 transitions, 540 flow. Second operand 6 states and 565 transitions. [2023-11-06 22:20:45,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 132 transitions, 1460 flow [2023-11-06 22:20:45,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 132 transitions, 1262 flow, removed 41 selfloop flow, removed 5 redundant places. [2023-11-06 22:20:45,360 INFO L231 Difference]: Finished difference. Result has 65 places, 45 transitions, 449 flow [2023-11-06 22:20:45,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=449, PETRI_PLACES=65, PETRI_TRANSITIONS=45} [2023-11-06 22:20:45,361 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 32 predicate places. [2023-11-06 22:20:45,362 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 45 transitions, 449 flow [2023-11-06 22:20:45,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 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 22:20:45,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:45,362 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 22:20:45,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:20:45,363 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:20:45,364 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:45,364 INFO L85 PathProgramCache]: Analyzing trace with hash 375315014, now seen corresponding path program 2 times [2023-11-06 22:20:45,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:45,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595747975] [2023-11-06 22:20:45,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:45,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:45,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:45,536 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 22:20:45,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:45,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595747975] [2023-11-06 22:20:45,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595747975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:45,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:45,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:20:45,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818531691] [2023-11-06 22:20:45,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:45,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:20:45,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:45,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:20:45,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:20:45,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 166 [2023-11-06 22:20:45,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 45 transitions, 449 flow. Second operand has 6 states, 6 states have (on average 91.83333333333333) internal successors, (551), 6 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:45,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:45,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 166 [2023-11-06 22:20:45,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:45,683 INFO L124 PetriNetUnfolderBase]: 205/385 cut-off events. [2023-11-06 22:20:45,683 INFO L125 PetriNetUnfolderBase]: For 1701/1796 co-relation queries the response was YES. [2023-11-06 22:20:45,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1881 conditions, 385 events. 205/385 cut-off events. For 1701/1796 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1599 event pairs, 12 based on Foata normal form. 65/439 useless extension candidates. Maximal degree in co-relation 1851. Up to 122 conditions per place. [2023-11-06 22:20:45,686 INFO L140 encePairwiseOnDemand]: 160/166 looper letters, 21 selfloop transitions, 17 changer transitions 31/71 dead transitions. [2023-11-06 22:20:45,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 71 transitions, 851 flow [2023-11-06 22:20:45,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:20:45,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:20:45,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 582 transitions. [2023-11-06 22:20:45,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5843373493975904 [2023-11-06 22:20:45,690 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 582 transitions. [2023-11-06 22:20:45,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 582 transitions. [2023-11-06 22:20:45,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:45,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 582 transitions. [2023-11-06 22:20:45,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 97.0) internal successors, (582), 6 states have internal predecessors, (582), 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 22:20:45,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 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 22:20:45,696 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 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 22:20:45,696 INFO L175 Difference]: Start difference. First operand has 65 places, 45 transitions, 449 flow. Second operand 6 states and 582 transitions. [2023-11-06 22:20:45,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 71 transitions, 851 flow [2023-11-06 22:20:45,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 71 transitions, 717 flow, removed 9 selfloop flow, removed 10 redundant places. [2023-11-06 22:20:45,708 INFO L231 Difference]: Finished difference. Result has 59 places, 32 transitions, 262 flow [2023-11-06 22:20:45,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=262, PETRI_PLACES=59, PETRI_TRANSITIONS=32} [2023-11-06 22:20:45,709 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 26 predicate places. [2023-11-06 22:20:45,709 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 32 transitions, 262 flow [2023-11-06 22:20:45,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.83333333333333) internal successors, (551), 6 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:45,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:45,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:45,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:20:45,710 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:20:45,711 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:45,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1686952315, now seen corresponding path program 1 times [2023-11-06 22:20:45,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:45,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103324775] [2023-11-06 22:20:45,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:45,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:45,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:45,901 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 22:20:45,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:45,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103324775] [2023-11-06 22:20:45,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103324775] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:45,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:45,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:20:45,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070308202] [2023-11-06 22:20:45,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:45,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:20:45,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:45,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:20:45,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:20:45,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 166 [2023-11-06 22:20:45,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 32 transitions, 262 flow. Second operand has 5 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 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 22:20:45,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:45,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 166 [2023-11-06 22:20:45,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:45,968 INFO L124 PetriNetUnfolderBase]: 44/94 cut-off events. [2023-11-06 22:20:45,968 INFO L125 PetriNetUnfolderBase]: For 478/478 co-relation queries the response was YES. [2023-11-06 22:20:45,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 94 events. 44/94 cut-off events. For 478/478 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 184 event pairs, 14 based on Foata normal form. 1/95 useless extension candidates. Maximal degree in co-relation 485. Up to 57 conditions per place. [2023-11-06 22:20:45,969 INFO L140 encePairwiseOnDemand]: 163/166 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2023-11-06 22:20:45,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 35 transitions, 358 flow [2023-11-06 22:20:45,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:20:45,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:20:45,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 358 transitions. [2023-11-06 22:20:45,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5391566265060241 [2023-11-06 22:20:45,972 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 358 transitions. [2023-11-06 22:20:45,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 358 transitions. [2023-11-06 22:20:45,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:45,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 358 transitions. [2023-11-06 22:20:45,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:45,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 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 22:20:45,976 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 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 22:20:45,976 INFO L175 Difference]: Start difference. First operand has 59 places, 32 transitions, 262 flow. Second operand 4 states and 358 transitions. [2023-11-06 22:20:45,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 35 transitions, 358 flow [2023-11-06 22:20:45,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 35 transitions, 240 flow, removed 16 selfloop flow, removed 20 redundant places. [2023-11-06 22:20:45,979 INFO L231 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2023-11-06 22:20:45,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2023-11-06 22:20:45,980 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2023-11-06 22:20:45,980 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2023-11-06 22:20:45,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 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 22:20:45,983 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-11-06 22:20:45,984 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-11-06 22:20:45,984 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-06 22:20:45,984 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-11-06 22:20:45,984 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-11-06 22:20:45,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:20:45,985 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:45,989 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:20:45,989 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:20:45,993 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:20:45 BasicIcfg [2023-11-06 22:20:45,993 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:20:45,994 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:20:45,994 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:20:45,994 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:20:45,995 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:20:34" (3/4) ... [2023-11-06 22:20:45,997 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:20:46,002 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-06 22:20:46,002 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-06 22:20:46,002 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-06 22:20:46,002 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2023-11-06 22:20:46,010 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-11-06 22:20:46,010 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 22:20:46,010 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:20:46,010 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:20:46,075 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2ab7cb-6cc7-4332-a688-8456461f8156/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:20:46,076 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2ab7cb-6cc7-4332-a688-8456461f8156/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:20:46,076 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:20:46,076 INFO L158 Benchmark]: Toolchain (without parser) took 12791.29ms. Allocated memory was 155.2MB in the beginning and 270.5MB in the end (delta: 115.3MB). Free memory was 118.3MB in the beginning and 195.2MB in the end (delta: -76.9MB). Peak memory consumption was 42.3MB. Max. memory is 16.1GB. [2023-11-06 22:20:46,077 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 104.9MB. Free memory was 52.1MB in the beginning and 51.9MB in the end (delta: 144.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:20:46,077 INFO L158 Benchmark]: CACSL2BoogieTranslator took 667.25ms. Allocated memory is still 155.2MB. Free memory was 117.9MB in the beginning and 97.3MB in the end (delta: 20.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-06 22:20:46,078 INFO L158 Benchmark]: Boogie Procedure Inliner took 87.01ms. Allocated memory is still 155.2MB. Free memory was 97.3MB in the beginning and 95.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:20:46,078 INFO L158 Benchmark]: Boogie Preprocessor took 64.28ms. Allocated memory is still 155.2MB. Free memory was 95.1MB in the beginning and 93.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:20:46,078 INFO L158 Benchmark]: RCFGBuilder took 573.18ms. Allocated memory is still 155.2MB. Free memory was 93.5MB in the beginning and 126.1MB in the end (delta: -32.6MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. [2023-11-06 22:20:46,079 INFO L158 Benchmark]: TraceAbstraction took 11309.84ms. Allocated memory was 155.2MB in the beginning and 270.5MB in the end (delta: 115.3MB). Free memory was 125.4MB in the beginning and 198.3MB in the end (delta: -72.9MB). Peak memory consumption was 41.0MB. Max. memory is 16.1GB. [2023-11-06 22:20:46,079 INFO L158 Benchmark]: Witness Printer took 81.88ms. Allocated memory is still 270.5MB. Free memory was 198.3MB in the beginning and 195.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 22:20:46,083 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 104.9MB. Free memory was 52.1MB in the beginning and 51.9MB in the end (delta: 144.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 667.25ms. Allocated memory is still 155.2MB. Free memory was 117.9MB in the beginning and 97.3MB in the end (delta: 20.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 87.01ms. Allocated memory is still 155.2MB. Free memory was 97.3MB in the beginning and 95.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.28ms. Allocated memory is still 155.2MB. Free memory was 95.1MB in the beginning and 93.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 573.18ms. Allocated memory is still 155.2MB. Free memory was 93.5MB in the beginning and 126.1MB in the end (delta: -32.6MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. * TraceAbstraction took 11309.84ms. Allocated memory was 155.2MB in the beginning and 270.5MB in the end (delta: 115.3MB). Free memory was 125.4MB in the beginning and 198.3MB in the end (delta: -72.9MB). Peak memory consumption was 41.0MB. Max. memory is 16.1GB. * Witness Printer took 81.88ms. Allocated memory is still 270.5MB. Free memory was 198.3MB in the beginning and 195.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 92 PlacesBefore, 33 PlacesAfterwards, 80 TransitionsBefore, 21 TransitionsAfterwards, 1586 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 65 TotalNumberOfCompositions, 2771 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1417, independent: 1336, independent conditional: 0, independent unconditional: 1336, dependent: 81, dependent conditional: 0, dependent unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 829, independent: 800, independent conditional: 0, independent unconditional: 800, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1417, independent: 536, independent conditional: 0, independent unconditional: 536, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 829, unknown conditional: 0, unknown unconditional: 829] , Statistics on independence cache: Total cache size (in pairs): 46, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 130 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 11.2s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 447 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 302 mSDsluCounter, 100 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 99 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 842 IncrementalHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 99 mSolverCounterUnsat, 74 mSDtfsCounter, 842 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=540occurred in iteration=11, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 199 NumberOfCodeBlocks, 199 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 185 ConstructedInterpolants, 0 QuantifiedInterpolants, 843 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 22:20:46,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2ab7cb-6cc7-4332-a688-8456461f8156/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE