./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c --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_769017b4-a841-4a7f-9dea-7658593c5b07/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769017b4-a841-4a7f-9dea-7658593c5b07/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_769017b4-a841-4a7f-9dea-7658593c5b07/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769017b4-a841-4a7f-9dea-7658593c5b07/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769017b4-a841-4a7f-9dea-7658593c5b07/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_769017b4-a841-4a7f-9dea-7658593c5b07/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 514e162b13bdcbe99106b4f79e5a61b8afdae9b478788e06b35106cd952df62f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:23:45,832 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:23:45,964 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769017b4-a841-4a7f-9dea-7658593c5b07/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:23:45,970 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:23:45,971 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:23:46,002 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:23:46,003 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:23:46,003 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:23:46,004 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:23:46,005 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:23:46,006 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:23:46,007 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:23:46,008 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:23:46,008 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:23:46,009 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:23:46,010 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:23:46,010 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:23:46,011 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:23:46,012 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:23:46,012 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:23:46,013 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:23:46,016 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:23:46,016 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:23:46,017 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:23:46,017 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:23:46,018 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:23:46,018 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:23:46,019 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:23:46,023 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:23:46,023 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:23:46,024 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:23:46,024 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:23:46,025 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:23:46,025 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:23:46,026 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:23:46,026 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:23:46,026 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:23:46,027 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:23:46,027 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:23:46,028 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_769017b4-a841-4a7f-9dea-7658593c5b07/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769017b4-a841-4a7f-9dea-7658593c5b07/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 514e162b13bdcbe99106b4f79e5a61b8afdae9b478788e06b35106cd952df62f [2023-11-06 22:23:46,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:23:46,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:23:46,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:23:46,408 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:23:46,408 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:23:46,410 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769017b4-a841-4a7f-9dea-7658593c5b07/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2023-11-06 22:23:49,622 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:23:49,861 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:23:49,861 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769017b4-a841-4a7f-9dea-7658593c5b07/sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2023-11-06 22:23:49,870 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769017b4-a841-4a7f-9dea-7658593c5b07/bin/uautomizer-verify-WvqO1wxjHP/data/7e87c8185/929ced75486341cf98b9fc142be71aa8/FLAG05b7a1038 [2023-11-06 22:23:49,885 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769017b4-a841-4a7f-9dea-7658593c5b07/bin/uautomizer-verify-WvqO1wxjHP/data/7e87c8185/929ced75486341cf98b9fc142be71aa8 [2023-11-06 22:23:49,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:23:49,889 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:23:49,891 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:23:49,891 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:23:49,897 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:23:49,898 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:23:49" (1/1) ... [2023-11-06 22:23:49,899 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@351a646d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:49, skipping insertion in model container [2023-11-06 22:23:49,899 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:23:49" (1/1) ... [2023-11-06 22:23:49,928 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:23:50,156 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_769017b4-a841-4a7f-9dea-7658593c5b07/sv-benchmarks/c/weaver/chl-node-symm.wvr.c[3305,3318] [2023-11-06 22:23:50,176 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:23:50,222 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:23:50,295 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_769017b4-a841-4a7f-9dea-7658593c5b07/sv-benchmarks/c/weaver/chl-node-symm.wvr.c[3305,3318] [2023-11-06 22:23:50,305 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:23:50,333 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:23:50,333 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:50 WrapperNode [2023-11-06 22:23:50,334 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:23:50,335 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:23:50,335 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:23:50,336 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:23:50,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:50" (1/1) ... [2023-11-06 22:23:50,359 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:50" (1/1) ... [2023-11-06 22:23:50,403 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 297 [2023-11-06 22:23:50,404 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:23:50,405 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:23:50,405 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:23:50,405 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:23:50,418 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:50" (1/1) ... [2023-11-06 22:23:50,418 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:50" (1/1) ... [2023-11-06 22:23:50,425 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:50" (1/1) ... [2023-11-06 22:23:50,426 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:50" (1/1) ... [2023-11-06 22:23:50,442 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:50" (1/1) ... [2023-11-06 22:23:50,448 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:50" (1/1) ... [2023-11-06 22:23:50,452 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:50" (1/1) ... [2023-11-06 22:23:50,455 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:50" (1/1) ... [2023-11-06 22:23:50,461 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:23:50,462 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:23:50,462 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:23:50,462 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:23:50,463 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:50" (1/1) ... [2023-11-06 22:23:50,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:23:50,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769017b4-a841-4a7f-9dea-7658593c5b07/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:23:50,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769017b4-a841-4a7f-9dea-7658593c5b07/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:23:50,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769017b4-a841-4a7f-9dea-7658593c5b07/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:23:50,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:23:50,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:23:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:23:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:23:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:23:50,581 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:23:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:23:50,582 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:23:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:23:50,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:23:50,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:23:50,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:23:50,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:23:50,586 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 22:23:50,750 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:23:50,752 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:23:51,430 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:23:51,448 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:23:51,448 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 22:23:51,452 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:23:51 BoogieIcfgContainer [2023-11-06 22:23:51,452 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:23:51,456 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:23:51,456 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:23:51,460 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:23:51,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:23:49" (1/3) ... [2023-11-06 22:23:51,462 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d6d8726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:23:51, skipping insertion in model container [2023-11-06 22:23:51,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:23:50" (2/3) ... [2023-11-06 22:23:51,463 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d6d8726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:23:51, skipping insertion in model container [2023-11-06 22:23:51,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:23:51" (3/3) ... [2023-11-06 22:23:51,465 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2023-11-06 22:23:51,476 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:23:51,488 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:23:51,488 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:23:51,488 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:23:51,644 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 22:23:51,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 365 places, 386 transitions, 786 flow [2023-11-06 22:23:51,937 INFO L124 PetriNetUnfolderBase]: 28/384 cut-off events. [2023-11-06 22:23:51,938 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:23:51,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 393 conditions, 384 events. 28/384 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 371 event pairs, 0 based on Foata normal form. 0/355 useless extension candidates. Maximal degree in co-relation 305. Up to 2 conditions per place. [2023-11-06 22:23:51,957 INFO L82 GeneralOperation]: Start removeDead. Operand has 365 places, 386 transitions, 786 flow [2023-11-06 22:23:51,966 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 354 places, 375 transitions, 762 flow [2023-11-06 22:23:51,970 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:23:51,980 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 354 places, 375 transitions, 762 flow [2023-11-06 22:23:51,983 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 354 places, 375 transitions, 762 flow [2023-11-06 22:23:51,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 354 places, 375 transitions, 762 flow [2023-11-06 22:23:52,146 INFO L124 PetriNetUnfolderBase]: 28/375 cut-off events. [2023-11-06 22:23:52,147 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:23:52,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 375 events. 28/375 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 369 event pairs, 0 based on Foata normal form. 0/347 useless extension candidates. Maximal degree in co-relation 305. Up to 2 conditions per place. [2023-11-06 22:23:52,162 INFO L119 LiptonReduction]: Number of co-enabled transitions 7452 [2023-11-06 22:24:08,935 INFO L134 LiptonReduction]: Checked pairs total: 7973 [2023-11-06 22:24:08,936 INFO L136 LiptonReduction]: Total number of compositions: 441 [2023-11-06 22:24:08,953 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:24:08,961 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;@5a3801f7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:24:08,961 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-06 22:24:08,968 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:24:08,969 INFO L124 PetriNetUnfolderBase]: 6/25 cut-off events. [2023-11-06 22:24:08,969 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:24:08,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:08,970 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 22:24:08,970 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:24:08,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:08,976 INFO L85 PathProgramCache]: Analyzing trace with hash -652768710, now seen corresponding path program 1 times [2023-11-06 22:24:08,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:08,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806656855] [2023-11-06 22:24:08,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:08,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:09,447 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 22:24:09,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:09,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806656855] [2023-11-06 22:24:09,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806656855] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:09,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:09,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:24:09,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056354006] [2023-11-06 22:24:09,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:09,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:24:09,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:09,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:24:09,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:24:09,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 354 out of 827 [2023-11-06 22:24:09,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 26 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 360.0) internal successors, (1080), 3 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states 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 22:24:09,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:09,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 354 of 827 [2023-11-06 22:24:09,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:09,660 INFO L124 PetriNetUnfolderBase]: 61/120 cut-off events. [2023-11-06 22:24:09,660 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-06 22:24:09,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 120 events. 61/120 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 284 event pairs, 33 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 220. Up to 91 conditions per place. [2023-11-06 22:24:09,663 INFO L140 encePairwiseOnDemand]: 823/827 looper letters, 28 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2023-11-06 22:24:09,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 31 transitions, 139 flow [2023-11-06 22:24:09,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:24:09,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:24:09,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1094 transitions. [2023-11-06 22:24:09,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44095122934300685 [2023-11-06 22:24:09,689 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1094 transitions. [2023-11-06 22:24:09,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1094 transitions. [2023-11-06 22:24:09,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:09,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1094 transitions. [2023-11-06 22:24:09,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 364.6666666666667) internal successors, (1094), 3 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:09,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 827.0) internal successors, (3308), 4 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states 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 22:24:09,722 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 827.0) internal successors, (3308), 4 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states 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 22:24:09,724 INFO L175 Difference]: Start difference. First operand has 27 places, 26 transitions, 64 flow. Second operand 3 states and 1094 transitions. [2023-11-06 22:24:09,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 31 transitions, 139 flow [2023-11-06 22:24:09,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 31 transitions, 129 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:24:09,732 INFO L231 Difference]: Finished difference. Result has 27 places, 27 transitions, 74 flow [2023-11-06 22:24:09,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=27, PETRI_TRANSITIONS=27} [2023-11-06 22:24:09,740 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2023-11-06 22:24:09,740 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 27 transitions, 74 flow [2023-11-06 22:24:09,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 360.0) internal successors, (1080), 3 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states 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 22:24:09,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:09,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:09,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:24:09,743 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:24:09,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:09,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1681328317, now seen corresponding path program 1 times [2023-11-06 22:24:09,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:09,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88740631] [2023-11-06 22:24:09,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:09,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:09,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:10,051 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 22:24:10,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:10,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88740631] [2023-11-06 22:24:10,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88740631] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:10,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:10,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:24:10,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760472266] [2023-11-06 22:24:10,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:10,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:24:10,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:10,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:24:10,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:24:10,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 349 out of 827 [2023-11-06 22:24:10,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 27 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 355.3333333333333) internal successors, (1066), 3 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states 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 22:24:10,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:10,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 349 of 827 [2023-11-06 22:24:10,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:10,235 INFO L124 PetriNetUnfolderBase]: 61/121 cut-off events. [2023-11-06 22:24:10,235 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-11-06 22:24:10,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 121 events. 61/121 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 281 event pairs, 45 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 154. Up to 121 conditions per place. [2023-11-06 22:24:10,237 INFO L140 encePairwiseOnDemand]: 824/827 looper letters, 26 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-11-06 22:24:10,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 28 transitions, 132 flow [2023-11-06 22:24:10,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:24:10,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:24:10,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1075 transitions. [2023-11-06 22:24:10,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4332930270052398 [2023-11-06 22:24:10,242 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1075 transitions. [2023-11-06 22:24:10,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1075 transitions. [2023-11-06 22:24:10,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:10,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1075 transitions. [2023-11-06 22:24:10,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 358.3333333333333) internal successors, (1075), 3 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states 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 22:24:10,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 827.0) internal successors, (3308), 4 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states 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 22:24:10,258 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 827.0) internal successors, (3308), 4 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states 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 22:24:10,258 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 74 flow. Second operand 3 states and 1075 transitions. [2023-11-06 22:24:10,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 28 transitions, 132 flow [2023-11-06 22:24:10,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 28 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:24:10,261 INFO L231 Difference]: Finished difference. Result has 28 places, 28 transitions, 80 flow [2023-11-06 22:24:10,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=28, PETRI_TRANSITIONS=28} [2023-11-06 22:24:10,262 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-11-06 22:24:10,263 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 28 transitions, 80 flow [2023-11-06 22:24:10,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 355.3333333333333) internal successors, (1066), 3 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states 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 22:24:10,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:10,264 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 22:24:10,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:24:10,265 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:24:10,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:10,266 INFO L85 PathProgramCache]: Analyzing trace with hash 81557418, now seen corresponding path program 1 times [2023-11-06 22:24:10,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:10,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483444777] [2023-11-06 22:24:10,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:10,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:10,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:24:10,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:10,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483444777] [2023-11-06 22:24:10,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483444777] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:10,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:10,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:24:10,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870530716] [2023-11-06 22:24:10,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:10,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:24:10,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:10,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:24:10,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:24:10,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 347 out of 827 [2023-11-06 22:24:10,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 28 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states 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 22:24:10,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:10,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 347 of 827 [2023-11-06 22:24:10,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:10,627 INFO L124 PetriNetUnfolderBase]: 61/122 cut-off events. [2023-11-06 22:24:10,627 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:24:10,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 122 events. 61/122 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 281 event pairs, 45 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 281. Up to 120 conditions per place. [2023-11-06 22:24:10,629 INFO L140 encePairwiseOnDemand]: 822/827 looper letters, 25 selfloop transitions, 4 changer transitions 0/29 dead transitions. [2023-11-06 22:24:10,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 140 flow [2023-11-06 22:24:10,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:24:10,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:24:10,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1417 transitions. [2023-11-06 22:24:10,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4283555018137848 [2023-11-06 22:24:10,636 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1417 transitions. [2023-11-06 22:24:10,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1417 transitions. [2023-11-06 22:24:10,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:10,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1417 transitions. [2023-11-06 22:24:10,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 354.25) internal successors, (1417), 4 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states 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 22:24:10,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states 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 22:24:10,655 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states 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 22:24:10,655 INFO L175 Difference]: Start difference. First operand has 28 places, 28 transitions, 80 flow. Second operand 4 states and 1417 transitions. [2023-11-06 22:24:10,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 140 flow [2023-11-06 22:24:10,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 136 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:24:10,658 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 94 flow [2023-11-06 22:24:10,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2023-11-06 22:24:10,659 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2023-11-06 22:24:10,659 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 94 flow [2023-11-06 22:24:10,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states 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 22:24:10,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:10,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:10,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:24:10,662 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:24:10,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:10,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1710153654, now seen corresponding path program 1 times [2023-11-06 22:24:10,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:10,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289491443] [2023-11-06 22:24:10,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:10,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:10,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:24:10,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:10,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289491443] [2023-11-06 22:24:10,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289491443] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:10,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:10,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:24:10,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033143457] [2023-11-06 22:24:10,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:10,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:24:10,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:10,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:24:10,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:24:10,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 347 out of 827 [2023-11-06 22:24:10,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 352.25) internal successors, (1409), 4 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states 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 22:24:10,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:10,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 347 of 827 [2023-11-06 22:24:10,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:10,992 INFO L124 PetriNetUnfolderBase]: 61/123 cut-off events. [2023-11-06 22:24:10,992 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:24:10,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 123 events. 61/123 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 281 event pairs, 45 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 281. Up to 122 conditions per place. [2023-11-06 22:24:10,993 INFO L140 encePairwiseOnDemand]: 823/827 looper letters, 27 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2023-11-06 22:24:10,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 30 transitions, 156 flow [2023-11-06 22:24:10,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:24:10,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:24:10,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1416 transitions. [2023-11-06 22:24:10,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280532043530834 [2023-11-06 22:24:10,999 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1416 transitions. [2023-11-06 22:24:11,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1416 transitions. [2023-11-06 22:24:11,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:11,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1416 transitions. [2023-11-06 22:24:11,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states 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 22:24:11,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states 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 22:24:11,018 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states 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 22:24:11,019 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 94 flow. Second operand 4 states and 1416 transitions. [2023-11-06 22:24:11,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 30 transitions, 156 flow [2023-11-06 22:24:11,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 30 transitions, 155 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:24:11,021 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 107 flow [2023-11-06 22:24:11,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=107, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2023-11-06 22:24:11,022 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-11-06 22:24:11,022 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 107 flow [2023-11-06 22:24:11,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 352.25) internal successors, (1409), 4 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states 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 22:24:11,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:11,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:11,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:24:11,025 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:24:11,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:11,025 INFO L85 PathProgramCache]: Analyzing trace with hash 224237504, now seen corresponding path program 1 times [2023-11-06 22:24:11,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:11,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481959054] [2023-11-06 22:24:11,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:11,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:11,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:11,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:24:11,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:11,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481959054] [2023-11-06 22:24:11,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481959054] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:11,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:11,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:24:11,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554659487] [2023-11-06 22:24:11,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:11,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:24:11,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:11,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:24:11,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:24:11,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 347 out of 827 [2023-11-06 22:24:11,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 107 flow. Second operand has 4 states, 4 states have (on average 352.5) internal successors, (1410), 4 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states 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 22:24:11,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:11,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 347 of 827 [2023-11-06 22:24:11,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:11,391 INFO L124 PetriNetUnfolderBase]: 61/124 cut-off events. [2023-11-06 22:24:11,392 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 22:24:11,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 124 events. 61/124 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 280 event pairs, 45 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 288. Up to 123 conditions per place. [2023-11-06 22:24:11,393 INFO L140 encePairwiseOnDemand]: 823/827 looper letters, 28 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2023-11-06 22:24:11,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 171 flow [2023-11-06 22:24:11,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:24:11,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:24:11,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1416 transitions. [2023-11-06 22:24:11,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280532043530834 [2023-11-06 22:24:11,399 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1416 transitions. [2023-11-06 22:24:11,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1416 transitions. [2023-11-06 22:24:11,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:11,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1416 transitions. [2023-11-06 22:24:11,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states 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 22:24:11,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states 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 22:24:11,418 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states 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 22:24:11,418 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 107 flow. Second operand 4 states and 1416 transitions. [2023-11-06 22:24:11,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 171 flow [2023-11-06 22:24:11,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 31 transitions, 165 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-06 22:24:11,421 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 115 flow [2023-11-06 22:24:11,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=115, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-11-06 22:24:11,422 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-11-06 22:24:11,422 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 115 flow [2023-11-06 22:24:11,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 352.5) internal successors, (1410), 4 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states 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 22:24:11,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:11,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:11,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:24:11,424 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:24:11,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:11,425 INFO L85 PathProgramCache]: Analyzing trace with hash 821561634, now seen corresponding path program 1 times [2023-11-06 22:24:11,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:11,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653802501] [2023-11-06 22:24:11,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:11,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:11,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:12,820 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:24:12,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:12,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653802501] [2023-11-06 22:24:12,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653802501] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:12,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:12,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:24:12,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654627347] [2023-11-06 22:24:12,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:12,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:24:12,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:12,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:24:12,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:24:13,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 339 out of 827 [2023-11-06 22:24:13,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 115 flow. Second operand has 5 states, 5 states have (on average 343.6) internal successors, (1718), 5 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states 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 22:24:13,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:13,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 339 of 827 [2023-11-06 22:24:13,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:13,403 INFO L124 PetriNetUnfolderBase]: 61/131 cut-off events. [2023-11-06 22:24:13,403 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-06 22:24:13,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 131 events. 61/131 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 342 event pairs, 21 based on Foata normal form. 1/125 useless extension candidates. Maximal degree in co-relation 307. Up to 77 conditions per place. [2023-11-06 22:24:13,404 INFO L140 encePairwiseOnDemand]: 823/827 looper letters, 39 selfloop transitions, 1 changer transitions 9/49 dead transitions. [2023-11-06 22:24:13,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 49 transitions, 264 flow [2023-11-06 22:24:13,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:24:13,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:24:13,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1739 transitions. [2023-11-06 22:24:13,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42055622732769044 [2023-11-06 22:24:13,416 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1739 transitions. [2023-11-06 22:24:13,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1739 transitions. [2023-11-06 22:24:13,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:13,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1739 transitions. [2023-11-06 22:24:13,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 347.8) internal successors, (1739), 5 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states 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 22:24:13,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 827.0) internal successors, (4962), 6 states have internal predecessors, (4962), 0 states have call successors, (0), 0 states 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 22:24:13,438 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 827.0) internal successors, (4962), 6 states have internal predecessors, (4962), 0 states have call successors, (0), 0 states 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 22:24:13,439 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 115 flow. Second operand 5 states and 1739 transitions. [2023-11-06 22:24:13,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 49 transitions, 264 flow [2023-11-06 22:24:13,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 49 transitions, 258 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-06 22:24:13,444 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 120 flow [2023-11-06 22:24:13,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=120, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2023-11-06 22:24:13,449 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2023-11-06 22:24:13,449 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 120 flow [2023-11-06 22:24:13,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 343.6) internal successors, (1718), 5 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states 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 22:24:13,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:13,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:13,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:24:13,452 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:24:13,452 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:13,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1094523046, now seen corresponding path program 2 times [2023-11-06 22:24:13,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:13,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590216222] [2023-11-06 22:24:13,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:13,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:13,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:14,472 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:24:14,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:14,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590216222] [2023-11-06 22:24:14,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590216222] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:14,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:14,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:24:14,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325153453] [2023-11-06 22:24:14,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:14,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:24:14,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:14,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:24:14,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:24:14,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 339 out of 827 [2023-11-06 22:24:14,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 343.6) internal successors, (1718), 5 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states 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 22:24:14,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:14,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 339 of 827 [2023-11-06 22:24:14,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:14,912 INFO L124 PetriNetUnfolderBase]: 63/148 cut-off events. [2023-11-06 22:24:14,912 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2023-11-06 22:24:14,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 148 events. 63/148 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 417 event pairs, 40 based on Foata normal form. 1/148 useless extension candidates. Maximal degree in co-relation 394. Up to 113 conditions per place. [2023-11-06 22:24:14,914 INFO L140 encePairwiseOnDemand]: 822/827 looper letters, 37 selfloop transitions, 5 changer transitions 6/48 dead transitions. [2023-11-06 22:24:14,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 268 flow [2023-11-06 22:24:14,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:24:14,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:24:14,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1739 transitions. [2023-11-06 22:24:14,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42055622732769044 [2023-11-06 22:24:14,922 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1739 transitions. [2023-11-06 22:24:14,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1739 transitions. [2023-11-06 22:24:14,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:14,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1739 transitions. [2023-11-06 22:24:14,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 347.8) internal successors, (1739), 5 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states 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 22:24:14,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 827.0) internal successors, (4962), 6 states have internal predecessors, (4962), 0 states have call successors, (0), 0 states 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 22:24:14,942 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 827.0) internal successors, (4962), 6 states have internal predecessors, (4962), 0 states have call successors, (0), 0 states 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 22:24:14,942 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 120 flow. Second operand 5 states and 1739 transitions. [2023-11-06 22:24:14,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 268 flow [2023-11-06 22:24:14,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 48 transitions, 257 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-06 22:24:14,946 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 147 flow [2023-11-06 22:24:14,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=147, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2023-11-06 22:24:14,947 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2023-11-06 22:24:14,948 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 147 flow [2023-11-06 22:24:14,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 343.6) internal successors, (1718), 5 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states 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 22:24:14,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:14,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:14,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:24:14,960 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:24:14,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:14,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1664175016, now seen corresponding path program 3 times [2023-11-06 22:24:14,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:14,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786001483] [2023-11-06 22:24:14,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:14,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:15,972 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:24:15,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:15,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786001483] [2023-11-06 22:24:15,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786001483] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:15,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:15,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:24:15,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203199683] [2023-11-06 22:24:15,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:15,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:24:15,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:15,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:24:15,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:24:16,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 339 out of 827 [2023-11-06 22:24:16,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 147 flow. Second operand has 5 states, 5 states have (on average 343.6) internal successors, (1718), 5 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states 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 22:24:16,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:16,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 339 of 827 [2023-11-06 22:24:16,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:16,428 INFO L124 PetriNetUnfolderBase]: 60/139 cut-off events. [2023-11-06 22:24:16,428 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2023-11-06 22:24:16,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 139 events. 60/139 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 378 event pairs, 42 based on Foata normal form. 1/139 useless extension candidates. Maximal degree in co-relation 419. Up to 121 conditions per place. [2023-11-06 22:24:16,430 INFO L140 encePairwiseOnDemand]: 822/827 looper letters, 30 selfloop transitions, 4 changer transitions 9/43 dead transitions. [2023-11-06 22:24:16,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 43 transitions, 264 flow [2023-11-06 22:24:16,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:24:16,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:24:16,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1733 transitions. [2023-11-06 22:24:16,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4191051995163241 [2023-11-06 22:24:16,438 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1733 transitions. [2023-11-06 22:24:16,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1733 transitions. [2023-11-06 22:24:16,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:16,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1733 transitions. [2023-11-06 22:24:16,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 346.6) internal successors, (1733), 5 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states 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 22:24:16,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 827.0) internal successors, (4962), 6 states have internal predecessors, (4962), 0 states have call successors, (0), 0 states 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 22:24:16,453 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 827.0) internal successors, (4962), 6 states have internal predecessors, (4962), 0 states have call successors, (0), 0 states 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 22:24:16,454 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 147 flow. Second operand 5 states and 1733 transitions. [2023-11-06 22:24:16,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 43 transitions, 264 flow [2023-11-06 22:24:16,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 262 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:24:16,457 INFO L231 Difference]: Finished difference. Result has 47 places, 34 transitions, 161 flow [2023-11-06 22:24:16,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=161, PETRI_PLACES=47, PETRI_TRANSITIONS=34} [2023-11-06 22:24:16,461 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 20 predicate places. [2023-11-06 22:24:16,462 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 34 transitions, 161 flow [2023-11-06 22:24:16,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 343.6) internal successors, (1718), 5 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states 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 22:24:16,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:16,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:16,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:24:16,464 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:24:16,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:16,464 INFO L85 PathProgramCache]: Analyzing trace with hash -869529183, now seen corresponding path program 1 times [2023-11-06 22:24:16,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:16,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743270590] [2023-11-06 22:24:16,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:16,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:17,669 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:24:17,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:17,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743270590] [2023-11-06 22:24:17,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743270590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:17,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:17,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:24:17,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793782272] [2023-11-06 22:24:17,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:17,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:24:17,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:17,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:24:17,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:24:18,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 827 [2023-11-06 22:24:18,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 161 flow. Second operand has 9 states, 9 states have (on average 327.55555555555554) internal successors, (2948), 9 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states 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 22:24:18,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:18,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 827 [2023-11-06 22:24:18,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:18,590 INFO L124 PetriNetUnfolderBase]: 89/219 cut-off events. [2023-11-06 22:24:18,590 INFO L125 PetriNetUnfolderBase]: For 411/411 co-relation queries the response was YES. [2023-11-06 22:24:18,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 720 conditions, 219 events. 89/219 cut-off events. For 411/411 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 883 event pairs, 17 based on Foata normal form. 1/219 useless extension candidates. Maximal degree in co-relation 697. Up to 97 conditions per place. [2023-11-06 22:24:18,592 INFO L140 encePairwiseOnDemand]: 819/827 looper letters, 46 selfloop transitions, 8 changer transitions 12/66 dead transitions. [2023-11-06 22:24:18,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 66 transitions, 422 flow [2023-11-06 22:24:18,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:24:18,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:24:18,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2658 transitions. [2023-11-06 22:24:18,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017533252720677 [2023-11-06 22:24:18,603 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2658 transitions. [2023-11-06 22:24:18,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2658 transitions. [2023-11-06 22:24:18,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:18,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2658 transitions. [2023-11-06 22:24:18,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 332.25) internal successors, (2658), 8 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states 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 22:24:18,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 827.0) internal successors, (7443), 9 states have internal predecessors, (7443), 0 states have call successors, (0), 0 states 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 22:24:18,627 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 827.0) internal successors, (7443), 9 states have internal predecessors, (7443), 0 states have call successors, (0), 0 states 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 22:24:18,628 INFO L175 Difference]: Start difference. First operand has 47 places, 34 transitions, 161 flow. Second operand 8 states and 2658 transitions. [2023-11-06 22:24:18,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 66 transitions, 422 flow [2023-11-06 22:24:18,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 66 transitions, 402 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-06 22:24:18,632 INFO L231 Difference]: Finished difference. Result has 52 places, 36 transitions, 193 flow [2023-11-06 22:24:18,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=193, PETRI_PLACES=52, PETRI_TRANSITIONS=36} [2023-11-06 22:24:18,633 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 25 predicate places. [2023-11-06 22:24:18,633 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 36 transitions, 193 flow [2023-11-06 22:24:18,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 327.55555555555554) internal successors, (2948), 9 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states 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 22:24:18,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:18,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:18,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:24:18,635 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:24:18,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:18,636 INFO L85 PathProgramCache]: Analyzing trace with hash 320527285, now seen corresponding path program 2 times [2023-11-06 22:24:18,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:18,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898889572] [2023-11-06 22:24:18,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:18,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:19,809 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:24:19,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:19,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898889572] [2023-11-06 22:24:19,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898889572] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:19,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:19,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:24:19,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545974297] [2023-11-06 22:24:19,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:19,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:24:19,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:19,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:24:19,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:24:20,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 827 [2023-11-06 22:24:20,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 36 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 338.8333333333333) internal successors, (2033), 6 states have internal predecessors, (2033), 0 states have call successors, (0), 0 states 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 22:24:20,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:20,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 827 [2023-11-06 22:24:20,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:20,831 INFO L124 PetriNetUnfolderBase]: 92/232 cut-off events. [2023-11-06 22:24:20,831 INFO L125 PetriNetUnfolderBase]: For 536/536 co-relation queries the response was YES. [2023-11-06 22:24:20,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 815 conditions, 232 events. 92/232 cut-off events. For 536/536 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 966 event pairs, 30 based on Foata normal form. 1/232 useless extension candidates. Maximal degree in co-relation 790. Up to 126 conditions per place. [2023-11-06 22:24:20,834 INFO L140 encePairwiseOnDemand]: 822/827 looper letters, 42 selfloop transitions, 2 changer transitions 13/57 dead transitions. [2023-11-06 22:24:20,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 57 transitions, 376 flow [2023-11-06 22:24:20,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:24:20,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:24:20,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2058 transitions. [2023-11-06 22:24:20,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147521160822249 [2023-11-06 22:24:20,843 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2058 transitions. [2023-11-06 22:24:20,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2058 transitions. [2023-11-06 22:24:20,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:20,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2058 transitions. [2023-11-06 22:24:20,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 343.0) internal successors, (2058), 6 states have internal predecessors, (2058), 0 states have call successors, (0), 0 states 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 22:24:20,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 827.0) internal successors, (5789), 7 states have internal predecessors, (5789), 0 states have call successors, (0), 0 states 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 22:24:20,863 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 827.0) internal successors, (5789), 7 states have internal predecessors, (5789), 0 states have call successors, (0), 0 states 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 22:24:20,863 INFO L175 Difference]: Start difference. First operand has 52 places, 36 transitions, 193 flow. Second operand 6 states and 2058 transitions. [2023-11-06 22:24:20,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 57 transitions, 376 flow [2023-11-06 22:24:20,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 57 transitions, 360 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-06 22:24:20,867 INFO L231 Difference]: Finished difference. Result has 55 places, 36 transitions, 195 flow [2023-11-06 22:24:20,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=195, PETRI_PLACES=55, PETRI_TRANSITIONS=36} [2023-11-06 22:24:20,868 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 28 predicate places. [2023-11-06 22:24:20,869 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 36 transitions, 195 flow [2023-11-06 22:24:20,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 338.8333333333333) internal successors, (2033), 6 states have internal predecessors, (2033), 0 states have call successors, (0), 0 states 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 22:24:20,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:20,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:20,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:24:20,870 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:24:20,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:20,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1400625687, now seen corresponding path program 3 times [2023-11-06 22:24:20,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:20,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375195746] [2023-11-06 22:24:20,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:20,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:20,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:21,991 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:24:21,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:21,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375195746] [2023-11-06 22:24:21,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375195746] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:21,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:21,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:24:21,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588158671] [2023-11-06 22:24:21,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:21,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:24:21,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:21,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:24:21,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:24:22,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 827 [2023-11-06 22:24:22,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 36 transitions, 195 flow. Second operand has 9 states, 9 states have (on average 327.55555555555554) internal successors, (2948), 9 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states 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 22:24:22,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:22,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 827 [2023-11-06 22:24:22,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:23,132 INFO L124 PetriNetUnfolderBase]: 86/210 cut-off events. [2023-11-06 22:24:23,133 INFO L125 PetriNetUnfolderBase]: For 874/874 co-relation queries the response was YES. [2023-11-06 22:24:23,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 801 conditions, 210 events. 86/210 cut-off events. For 874/874 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 827 event pairs, 19 based on Foata normal form. 1/210 useless extension candidates. Maximal degree in co-relation 776. Up to 95 conditions per place. [2023-11-06 22:24:23,135 INFO L140 encePairwiseOnDemand]: 819/827 looper letters, 39 selfloop transitions, 9 changer transitions 15/63 dead transitions. [2023-11-06 22:24:23,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 63 transitions, 448 flow [2023-11-06 22:24:23,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:24:23,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:24:23,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2655 transitions. [2023-11-06 22:24:23,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4012998790810157 [2023-11-06 22:24:23,146 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2655 transitions. [2023-11-06 22:24:23,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2655 transitions. [2023-11-06 22:24:23,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:23,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2655 transitions. [2023-11-06 22:24:23,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 331.875) internal successors, (2655), 8 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states 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 22:24:23,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 827.0) internal successors, (7443), 9 states have internal predecessors, (7443), 0 states have call successors, (0), 0 states 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 22:24:23,169 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 827.0) internal successors, (7443), 9 states have internal predecessors, (7443), 0 states have call successors, (0), 0 states 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 22:24:23,169 INFO L175 Difference]: Start difference. First operand has 55 places, 36 transitions, 195 flow. Second operand 8 states and 2655 transitions. [2023-11-06 22:24:23,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 63 transitions, 448 flow [2023-11-06 22:24:23,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 63 transitions, 434 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-06 22:24:23,174 INFO L231 Difference]: Finished difference. Result has 57 places, 37 transitions, 212 flow [2023-11-06 22:24:23,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=212, PETRI_PLACES=57, PETRI_TRANSITIONS=37} [2023-11-06 22:24:23,175 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 30 predicate places. [2023-11-06 22:24:23,175 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 37 transitions, 212 flow [2023-11-06 22:24:23,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 327.55555555555554) internal successors, (2948), 9 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states 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 22:24:23,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:23,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:23,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:24:23,177 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:24:23,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:23,178 INFO L85 PathProgramCache]: Analyzing trace with hash 158640941, now seen corresponding path program 4 times [2023-11-06 22:24:23,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:23,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661052575] [2023-11-06 22:24:23,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:23,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:24,017 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:24:24,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:24,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661052575] [2023-11-06 22:24:24,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661052575] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:24,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:24,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:24:24,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324758308] [2023-11-06 22:24:24,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:24,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:24:24,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:24,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:24:24,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:24:24,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 827 [2023-11-06 22:24:24,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 37 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 338.8333333333333) internal successors, (2033), 6 states have internal predecessors, (2033), 0 states have call successors, (0), 0 states 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 22:24:24,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:24,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 827 [2023-11-06 22:24:24,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:24,809 INFO L124 PetriNetUnfolderBase]: 95/249 cut-off events. [2023-11-06 22:24:24,809 INFO L125 PetriNetUnfolderBase]: For 600/600 co-relation queries the response was YES. [2023-11-06 22:24:24,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 912 conditions, 249 events. 95/249 cut-off events. For 600/600 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1120 event pairs, 33 based on Foata normal form. 1/249 useless extension candidates. Maximal degree in co-relation 888. Up to 173 conditions per place. [2023-11-06 22:24:24,825 INFO L140 encePairwiseOnDemand]: 821/827 looper letters, 35 selfloop transitions, 6 changer transitions 21/62 dead transitions. [2023-11-06 22:24:24,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 62 transitions, 455 flow [2023-11-06 22:24:24,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:24:24,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:24:24,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2061 transitions. [2023-11-06 22:24:24,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153567110036276 [2023-11-06 22:24:24,836 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2061 transitions. [2023-11-06 22:24:24,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2061 transitions. [2023-11-06 22:24:24,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:24,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2061 transitions. [2023-11-06 22:24:24,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 343.5) internal successors, (2061), 6 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states 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 22:24:24,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 827.0) internal successors, (5789), 7 states have internal predecessors, (5789), 0 states have call successors, (0), 0 states 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 22:24:24,861 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 827.0) internal successors, (5789), 7 states have internal predecessors, (5789), 0 states have call successors, (0), 0 states 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 22:24:24,861 INFO L175 Difference]: Start difference. First operand has 57 places, 37 transitions, 212 flow. Second operand 6 states and 2061 transitions. [2023-11-06 22:24:24,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 62 transitions, 455 flow [2023-11-06 22:24:24,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 62 transitions, 423 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-11-06 22:24:24,869 INFO L231 Difference]: Finished difference. Result has 57 places, 37 transitions, 214 flow [2023-11-06 22:24:24,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=57, PETRI_TRANSITIONS=37} [2023-11-06 22:24:24,870 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 30 predicate places. [2023-11-06 22:24:24,870 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 37 transitions, 214 flow [2023-11-06 22:24:24,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 338.8333333333333) internal successors, (2033), 6 states have internal predecessors, (2033), 0 states have call successors, (0), 0 states 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 22:24:24,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:24,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:24,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:24:24,872 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:24:24,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:24,872 INFO L85 PathProgramCache]: Analyzing trace with hash 399739941, now seen corresponding path program 5 times [2023-11-06 22:24:24,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:24,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916554363] [2023-11-06 22:24:24,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:24,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:24,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:26,041 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:24:26,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:26,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916554363] [2023-11-06 22:24:26,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916554363] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:26,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:26,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:24:26,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98763426] [2023-11-06 22:24:26,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:26,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:24:26,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:26,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:24:26,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:24:26,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 827 [2023-11-06 22:24:26,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 37 transitions, 214 flow. Second operand has 9 states, 9 states have (on average 327.55555555555554) internal successors, (2948), 9 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states 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 22:24:26,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:26,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 827 [2023-11-06 22:24:26,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:27,007 INFO L124 PetriNetUnfolderBase]: 69/174 cut-off events. [2023-11-06 22:24:27,007 INFO L125 PetriNetUnfolderBase]: For 592/592 co-relation queries the response was YES. [2023-11-06 22:24:27,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 678 conditions, 174 events. 69/174 cut-off events. For 592/592 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 632 event pairs, 29 based on Foata normal form. 1/174 useless extension candidates. Maximal degree in co-relation 655. Up to 105 conditions per place. [2023-11-06 22:24:27,009 INFO L140 encePairwiseOnDemand]: 820/827 looper letters, 39 selfloop transitions, 4 changer transitions 12/55 dead transitions. [2023-11-06 22:24:27,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 55 transitions, 387 flow [2023-11-06 22:24:27,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:24:27,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:24:27,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2645 transitions. [2023-11-06 22:24:27,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3997883917775091 [2023-11-06 22:24:27,021 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2645 transitions. [2023-11-06 22:24:27,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2645 transitions. [2023-11-06 22:24:27,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:27,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2645 transitions. [2023-11-06 22:24:27,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 330.625) internal successors, (2645), 8 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states 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 22:24:27,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 827.0) internal successors, (7443), 9 states have internal predecessors, (7443), 0 states have call successors, (0), 0 states 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 22:24:27,042 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 827.0) internal successors, (7443), 9 states have internal predecessors, (7443), 0 states have call successors, (0), 0 states 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 22:24:27,042 INFO L175 Difference]: Start difference. First operand has 57 places, 37 transitions, 214 flow. Second operand 8 states and 2645 transitions. [2023-11-06 22:24:27,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 55 transitions, 387 flow [2023-11-06 22:24:27,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 55 transitions, 354 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-11-06 22:24:27,047 INFO L231 Difference]: Finished difference. Result has 57 places, 36 transitions, 194 flow [2023-11-06 22:24:27,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=194, PETRI_PLACES=57, PETRI_TRANSITIONS=36} [2023-11-06 22:24:27,049 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 30 predicate places. [2023-11-06 22:24:27,049 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 36 transitions, 194 flow [2023-11-06 22:24:27,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 327.55555555555554) internal successors, (2948), 9 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states 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 22:24:27,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:27,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:27,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:24:27,051 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:24:27,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:27,052 INFO L85 PathProgramCache]: Analyzing trace with hash -309661090, now seen corresponding path program 4 times [2023-11-06 22:24:27,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:27,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520313958] [2023-11-06 22:24:27,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:27,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:27,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:27,826 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:24:27,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:27,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520313958] [2023-11-06 22:24:27,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520313958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:27,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:27,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:24:27,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000135638] [2023-11-06 22:24:27,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:27,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:24:27,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:27,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:24:27,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:24:28,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 827 [2023-11-06 22:24:28,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 36 transitions, 194 flow. Second operand has 8 states, 8 states have (on average 331.875) internal successors, (2655), 8 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states 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 22:24:28,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:28,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 827 [2023-11-06 22:24:28,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:28,524 INFO L124 PetriNetUnfolderBase]: 47/125 cut-off events. [2023-11-06 22:24:28,524 INFO L125 PetriNetUnfolderBase]: For 489/489 co-relation queries the response was YES. [2023-11-06 22:24:28,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 125 events. 47/125 cut-off events. For 489/489 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 369 event pairs, 23 based on Foata normal form. 1/125 useless extension candidates. Maximal degree in co-relation 478. Up to 76 conditions per place. [2023-11-06 22:24:28,525 INFO L140 encePairwiseOnDemand]: 820/827 looper letters, 37 selfloop transitions, 7 changer transitions 6/50 dead transitions. [2023-11-06 22:24:28,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 50 transitions, 354 flow [2023-11-06 22:24:28,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:24:28,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:24:28,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2346 transitions. [2023-11-06 22:24:28,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4052513387458974 [2023-11-06 22:24:28,537 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2346 transitions. [2023-11-06 22:24:28,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2346 transitions. [2023-11-06 22:24:28,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:28,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2346 transitions. [2023-11-06 22:24:28,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 335.14285714285717) internal successors, (2346), 7 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states 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 22:24:28,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 827.0) internal successors, (6616), 8 states have internal predecessors, (6616), 0 states have call successors, (0), 0 states 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 22:24:28,556 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 827.0) internal successors, (6616), 8 states have internal predecessors, (6616), 0 states have call successors, (0), 0 states 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 22:24:28,557 INFO L175 Difference]: Start difference. First operand has 57 places, 36 transitions, 194 flow. Second operand 7 states and 2346 transitions. [2023-11-06 22:24:28,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 50 transitions, 354 flow [2023-11-06 22:24:28,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 50 transitions, 318 flow, removed 7 selfloop flow, removed 9 redundant places. [2023-11-06 22:24:28,560 INFO L231 Difference]: Finished difference. Result has 54 places, 36 transitions, 189 flow [2023-11-06 22:24:28,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=189, PETRI_PLACES=54, PETRI_TRANSITIONS=36} [2023-11-06 22:24:28,561 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 27 predicate places. [2023-11-06 22:24:28,562 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 36 transitions, 189 flow [2023-11-06 22:24:28,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 331.875) internal successors, (2655), 8 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states 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 22:24:28,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:28,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:28,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:24:28,563 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:24:28,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:28,564 INFO L85 PathProgramCache]: Analyzing trace with hash 2035909244, now seen corresponding path program 5 times [2023-11-06 22:24:28,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:28,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456740635] [2023-11-06 22:24:28,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:28,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:29,407 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:24:29,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:29,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456740635] [2023-11-06 22:24:29,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456740635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:29,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:29,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:24:29,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389569777] [2023-11-06 22:24:29,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:29,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:24:29,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:29,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:24:29,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:24:30,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 827 [2023-11-06 22:24:30,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 36 transitions, 189 flow. Second operand has 9 states, 9 states have (on average 331.55555555555554) internal successors, (2984), 9 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states 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 22:24:30,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:30,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 827 [2023-11-06 22:24:30,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:30,390 INFO L124 PetriNetUnfolderBase]: 46/129 cut-off events. [2023-11-06 22:24:30,390 INFO L125 PetriNetUnfolderBase]: For 358/358 co-relation queries the response was YES. [2023-11-06 22:24:30,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 517 conditions, 129 events. 46/129 cut-off events. For 358/358 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 404 event pairs, 27 based on Foata normal form. 1/129 useless extension candidates. Maximal degree in co-relation 495. Up to 72 conditions per place. [2023-11-06 22:24:30,392 INFO L140 encePairwiseOnDemand]: 821/827 looper letters, 37 selfloop transitions, 5 changer transitions 8/50 dead transitions. [2023-11-06 22:24:30,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 50 transitions, 345 flow [2023-11-06 22:24:30,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:24:30,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:24:30,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2346 transitions. [2023-11-06 22:24:30,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4052513387458974 [2023-11-06 22:24:30,401 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2346 transitions. [2023-11-06 22:24:30,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2346 transitions. [2023-11-06 22:24:30,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:30,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2346 transitions. [2023-11-06 22:24:30,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 335.14285714285717) internal successors, (2346), 7 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states 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 22:24:30,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 827.0) internal successors, (6616), 8 states have internal predecessors, (6616), 0 states have call successors, (0), 0 states 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 22:24:30,423 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 827.0) internal successors, (6616), 8 states have internal predecessors, (6616), 0 states have call successors, (0), 0 states 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 22:24:30,424 INFO L175 Difference]: Start difference. First operand has 54 places, 36 transitions, 189 flow. Second operand 7 states and 2346 transitions. [2023-11-06 22:24:30,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 50 transitions, 345 flow [2023-11-06 22:24:30,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 50 transitions, 319 flow, removed 5 selfloop flow, removed 7 redundant places. [2023-11-06 22:24:30,428 INFO L231 Difference]: Finished difference. Result has 54 places, 34 transitions, 169 flow [2023-11-06 22:24:30,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=169, PETRI_PLACES=54, PETRI_TRANSITIONS=34} [2023-11-06 22:24:30,429 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 27 predicate places. [2023-11-06 22:24:30,430 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 34 transitions, 169 flow [2023-11-06 22:24:30,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 331.55555555555554) internal successors, (2984), 9 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states 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 22:24:30,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:30,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:30,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:24:30,432 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:24:30,432 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:30,433 INFO L85 PathProgramCache]: Analyzing trace with hash 259990880, now seen corresponding path program 6 times [2023-11-06 22:24:30,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:30,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809308904] [2023-11-06 22:24:30,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:30,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:30,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:31,339 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:24:31,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:31,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809308904] [2023-11-06 22:24:31,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809308904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:31,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:31,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:24:31,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179496561] [2023-11-06 22:24:31,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:31,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:24:31,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:31,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:24:31,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:24:31,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 827 [2023-11-06 22:24:31,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 34 transitions, 169 flow. Second operand has 8 states, 8 states have (on average 331.875) internal successors, (2655), 8 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states 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 22:24:31,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:31,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 827 [2023-11-06 22:24:31,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:32,112 INFO L124 PetriNetUnfolderBase]: 41/107 cut-off events. [2023-11-06 22:24:32,112 INFO L125 PetriNetUnfolderBase]: For 331/331 co-relation queries the response was YES. [2023-11-06 22:24:32,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 107 events. 41/107 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 271 event pairs, 26 based on Foata normal form. 1/107 useless extension candidates. Maximal degree in co-relation 402. Up to 82 conditions per place. [2023-11-06 22:24:32,114 INFO L140 encePairwiseOnDemand]: 821/827 looper letters, 27 selfloop transitions, 2 changer transitions 14/43 dead transitions. [2023-11-06 22:24:32,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 43 transitions, 294 flow [2023-11-06 22:24:32,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:24:32,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:24:32,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2340 transitions. [2023-11-06 22:24:32,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4042148903092071 [2023-11-06 22:24:32,122 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2340 transitions. [2023-11-06 22:24:32,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2340 transitions. [2023-11-06 22:24:32,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:32,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2340 transitions. [2023-11-06 22:24:32,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 334.2857142857143) internal successors, (2340), 7 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states 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 22:24:32,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 827.0) internal successors, (6616), 8 states have internal predecessors, (6616), 0 states have call successors, (0), 0 states 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 22:24:32,145 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 827.0) internal successors, (6616), 8 states have internal predecessors, (6616), 0 states have call successors, (0), 0 states 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 22:24:32,145 INFO L175 Difference]: Start difference. First operand has 54 places, 34 transitions, 169 flow. Second operand 7 states and 2340 transitions. [2023-11-06 22:24:32,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 43 transitions, 294 flow [2023-11-06 22:24:32,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 43 transitions, 278 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-06 22:24:32,148 INFO L231 Difference]: Finished difference. Result has 55 places, 29 transitions, 124 flow [2023-11-06 22:24:32,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=124, PETRI_PLACES=55, PETRI_TRANSITIONS=29} [2023-11-06 22:24:32,149 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 28 predicate places. [2023-11-06 22:24:32,149 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 29 transitions, 124 flow [2023-11-06 22:24:32,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 331.875) internal successors, (2655), 8 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states 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 22:24:32,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:32,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:32,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:24:32,151 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:24:32,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:32,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1344584751, now seen corresponding path program 6 times [2023-11-06 22:24:32,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:32,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528390043] [2023-11-06 22:24:32,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:32,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:32,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:33,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:24:33,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:33,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528390043] [2023-11-06 22:24:33,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528390043] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:33,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:33,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:24:33,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415119998] [2023-11-06 22:24:33,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:33,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:24:33,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:33,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:24:33,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:24:33,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 827 [2023-11-06 22:24:33,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 29 transitions, 124 flow. Second operand has 10 states, 10 states have (on average 327.3) internal successors, (3273), 10 states have internal predecessors, (3273), 0 states have call successors, (0), 0 states 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 22:24:33,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:33,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 827 [2023-11-06 22:24:33,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:34,248 INFO L124 PetriNetUnfolderBase]: 24/70 cut-off events. [2023-11-06 22:24:34,248 INFO L125 PetriNetUnfolderBase]: For 109/109 co-relation queries the response was YES. [2023-11-06 22:24:34,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 70 events. 24/70 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 128 event pairs, 8 based on Foata normal form. 1/70 useless extension candidates. Maximal degree in co-relation 244. Up to 27 conditions per place. [2023-11-06 22:24:34,249 INFO L140 encePairwiseOnDemand]: 820/827 looper letters, 27 selfloop transitions, 5 changer transitions 7/39 dead transitions. [2023-11-06 22:24:34,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 39 transitions, 229 flow [2023-11-06 22:24:34,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:24:34,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:24:34,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2634 transitions. [2023-11-06 22:24:34,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3981257557436518 [2023-11-06 22:24:34,261 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2634 transitions. [2023-11-06 22:24:34,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2634 transitions. [2023-11-06 22:24:34,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:34,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2634 transitions. [2023-11-06 22:24:34,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 329.25) internal successors, (2634), 8 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states 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 22:24:34,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 827.0) internal successors, (7443), 9 states have internal predecessors, (7443), 0 states have call successors, (0), 0 states 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 22:24:34,283 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 827.0) internal successors, (7443), 9 states have internal predecessors, (7443), 0 states have call successors, (0), 0 states 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 22:24:34,284 INFO L175 Difference]: Start difference. First operand has 55 places, 29 transitions, 124 flow. Second operand 8 states and 2634 transitions. [2023-11-06 22:24:34,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 39 transitions, 229 flow [2023-11-06 22:24:34,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 39 transitions, 209 flow, removed 8 selfloop flow, removed 9 redundant places. [2023-11-06 22:24:34,286 INFO L231 Difference]: Finished difference. Result has 48 places, 29 transitions, 121 flow [2023-11-06 22:24:34,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=121, PETRI_PLACES=48, PETRI_TRANSITIONS=29} [2023-11-06 22:24:34,287 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 21 predicate places. [2023-11-06 22:24:34,287 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 29 transitions, 121 flow [2023-11-06 22:24:34,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 327.3) internal successors, (3273), 10 states have internal predecessors, (3273), 0 states have call successors, (0), 0 states 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 22:24:34,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:34,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:34,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 22:24:34,289 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:24:34,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:34,290 INFO L85 PathProgramCache]: Analyzing trace with hash -973786507, now seen corresponding path program 7 times [2023-11-06 22:24:34,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:34,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184344433] [2023-11-06 22:24:34,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:34,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:34,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:35,419 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:24:35,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:35,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184344433] [2023-11-06 22:24:35,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184344433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:35,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:35,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:24:35,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594088406] [2023-11-06 22:24:35,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:35,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:24:35,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:35,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:24:35,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:24:36,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 827 [2023-11-06 22:24:36,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 29 transitions, 121 flow. Second operand has 10 states, 10 states have (on average 327.3) internal successors, (3273), 10 states have internal predecessors, (3273), 0 states have call successors, (0), 0 states 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 22:24:36,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:36,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 827 [2023-11-06 22:24:36,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:36,638 INFO L124 PetriNetUnfolderBase]: 23/63 cut-off events. [2023-11-06 22:24:36,638 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-06 22:24:36,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 63 events. 23/63 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 97 event pairs, 13 based on Foata normal form. 1/63 useless extension candidates. Maximal degree in co-relation 204. Up to 31 conditions per place. [2023-11-06 22:24:36,639 INFO L140 encePairwiseOnDemand]: 820/827 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2023-11-06 22:24:36,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 34 transitions, 205 flow [2023-11-06 22:24:36,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:24:36,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:24:36,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2630 transitions. [2023-11-06 22:24:36,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3975211608222491 [2023-11-06 22:24:36,650 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2630 transitions. [2023-11-06 22:24:36,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2630 transitions. [2023-11-06 22:24:36,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:36,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2630 transitions. [2023-11-06 22:24:36,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 328.75) internal successors, (2630), 8 states have internal predecessors, (2630), 0 states have call successors, (0), 0 states 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 22:24:36,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 827.0) internal successors, (7443), 9 states have internal predecessors, (7443), 0 states have call successors, (0), 0 states 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 22:24:36,668 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 827.0) internal successors, (7443), 9 states have internal predecessors, (7443), 0 states have call successors, (0), 0 states 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 22:24:36,668 INFO L175 Difference]: Start difference. First operand has 48 places, 29 transitions, 121 flow. Second operand 8 states and 2630 transitions. [2023-11-06 22:24:36,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 34 transitions, 205 flow [2023-11-06 22:24:36,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 34 transitions, 195 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 22:24:36,670 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2023-11-06 22:24:36,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2023-11-06 22:24:36,671 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 21 predicate places. [2023-11-06 22:24:36,671 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2023-11-06 22:24:36,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 327.3) internal successors, (3273), 10 states have internal predecessors, (3273), 0 states have call successors, (0), 0 states 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 22:24:36,675 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-06 22:24:36,675 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-06 22:24:36,676 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-06 22:24:36,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 22:24:36,676 INFO L445 BasicCegarLoop]: Path program histogram: [7, 6, 1, 1, 1, 1, 1] [2023-11-06 22:24:36,680 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:24:36,680 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:24:36,684 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:24:36 BasicIcfg [2023-11-06 22:24:36,684 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:24:36,685 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:24:36,685 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:24:36,685 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:24:36,685 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:23:51" (3/4) ... [2023-11-06 22:24:36,687 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:24:36,692 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 22:24:36,692 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 22:24:36,709 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2023-11-06 22:24:36,710 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 22:24:36,710 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:24:36,711 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:24:36,821 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769017b4-a841-4a7f-9dea-7658593c5b07/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:24:36,821 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769017b4-a841-4a7f-9dea-7658593c5b07/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:24:36,821 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:24:36,822 INFO L158 Benchmark]: Toolchain (without parser) took 46932.85ms. Allocated memory was 163.6MB in the beginning and 497.0MB in the end (delta: 333.4MB). Free memory was 127.6MB in the beginning and 291.5MB in the end (delta: -163.9MB). Peak memory consumption was 170.6MB. Max. memory is 16.1GB. [2023-11-06 22:24:36,823 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 119.5MB. Free memory is still 90.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:24:36,823 INFO L158 Benchmark]: CACSL2BoogieTranslator took 443.23ms. Allocated memory is still 163.6MB. Free memory was 126.6MB in the beginning and 132.1MB in the end (delta: -5.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:24:36,823 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.77ms. Allocated memory is still 163.6MB. Free memory was 132.1MB in the beginning and 129.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:24:36,824 INFO L158 Benchmark]: Boogie Preprocessor took 56.33ms. Allocated memory is still 163.6MB. Free memory was 129.0MB in the beginning and 126.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:24:36,824 INFO L158 Benchmark]: RCFGBuilder took 990.30ms. Allocated memory is still 163.6MB. Free memory was 126.9MB in the beginning and 99.6MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-06 22:24:36,824 INFO L158 Benchmark]: TraceAbstraction took 45228.28ms. Allocated memory was 163.6MB in the beginning and 497.0MB in the end (delta: 333.4MB). Free memory was 99.6MB in the beginning and 296.8MB in the end (delta: -197.2MB). Peak memory consumption was 138.4MB. Max. memory is 16.1GB. [2023-11-06 22:24:36,825 INFO L158 Benchmark]: Witness Printer took 136.87ms. Allocated memory is still 497.0MB. Free memory was 296.8MB in the beginning and 291.5MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-06 22:24:36,827 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 119.5MB. Free memory is still 90.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 443.23ms. Allocated memory is still 163.6MB. Free memory was 126.6MB in the beginning and 132.1MB in the end (delta: -5.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.77ms. Allocated memory is still 163.6MB. Free memory was 132.1MB in the beginning and 129.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.33ms. Allocated memory is still 163.6MB. Free memory was 129.0MB in the beginning and 126.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 990.30ms. Allocated memory is still 163.6MB. Free memory was 126.9MB in the beginning and 99.6MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 45228.28ms. Allocated memory was 163.6MB in the beginning and 497.0MB in the end (delta: 333.4MB). Free memory was 99.6MB in the beginning and 296.8MB in the end (delta: -197.2MB). Peak memory consumption was 138.4MB. Max. memory is 16.1GB. * Witness Printer took 136.87ms. Allocated memory is still 497.0MB. Free memory was 296.8MB in the beginning and 291.5MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 17.0s, 354 PlacesBefore, 27 PlacesAfterwards, 375 TransitionsBefore, 26 TransitionsAfterwards, 7452 CoEnabledTransitionPairs, 9 FixpointIterations, 226 TrivialSequentialCompositions, 102 ConcurrentSequentialCompositions, 56 TrivialYvCompositions, 35 ConcurrentYvCompositions, 22 ChoiceCompositions, 441 TotalNumberOfCompositions, 7973 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6810, independent: 6707, independent conditional: 0, independent unconditional: 6707, dependent: 103, dependent conditional: 0, dependent unconditional: 103, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4351, independent: 4330, independent conditional: 0, independent unconditional: 4330, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6810, independent: 2377, independent conditional: 0, independent unconditional: 2377, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 4351, unknown conditional: 0, unknown unconditional: 4351] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 27, Positive conditional cache size: 0, Positive unconditional cache size: 27, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 93]: 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 5 procedures, 463 locations, 3 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: 45.0s, OverallIterations: 18, TraceHistogramMax: 1, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 12.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 17.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4654 SdHoareTripleChecker+Valid, 9.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3360 mSDsluCounter, 5644 SdHoareTripleChecker+Invalid, 8.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5058 mSDsCounter, 66 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10257 IncrementalHoareTripleChecker+Invalid, 10323 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 66 mSolverCounterUnsat, 586 mSDtfsCounter, 10257 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=214occurred in iteration=12, InterpolantAutomatonStates: 106, 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, 0.7s SatisfiabilityAnalysisTime, 13.6s InterpolantComputationTime, 399 NumberOfCodeBlocks, 399 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 381 ConstructedInterpolants, 0 QuantifiedInterpolants, 4727 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 58/58 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 22:24:36,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769017b4-a841-4a7f-9dea-7658593c5b07/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE