./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91daab0b-f695-4635-8153-dc2a37ffdabe/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91daab0b-f695-4635-8153-dc2a37ffdabe/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_91daab0b-f695-4635-8153-dc2a37ffdabe/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91daab0b-f695-4635-8153-dc2a37ffdabe/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91daab0b-f695-4635-8153-dc2a37ffdabe/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_91daab0b-f695-4635-8153-dc2a37ffdabe/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 5fedede1a0cf545b0a275694256164e3eb4f49b22c80042adac647157728b27d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:07:54,751 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:07:54,877 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91daab0b-f695-4635-8153-dc2a37ffdabe/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:07:54,886 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:07:54,887 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:07:54,935 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:07:54,936 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:07:54,937 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:07:54,938 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:07:54,943 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:07:54,945 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:07:54,945 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:07:54,946 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:07:54,948 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:07:54,948 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:07:54,949 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:07:54,949 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:07:54,950 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:07:54,950 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:07:54,951 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:07:54,951 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:07:54,952 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:07:54,952 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:07:54,953 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:07:54,953 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:07:54,954 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:07:54,955 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:07:54,955 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:07:54,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:07:54,956 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:07:54,958 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:07:54,958 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:07:54,958 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:07:54,958 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:07:54,959 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:07:54,959 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:07:54,959 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:07:54,959 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:07:54,960 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:07:54,960 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_91daab0b-f695-4635-8153-dc2a37ffdabe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91daab0b-f695-4635-8153-dc2a37ffdabe/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fedede1a0cf545b0a275694256164e3eb4f49b22c80042adac647157728b27d [2023-11-06 22:07:55,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:07:55,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:07:55,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:07:55,323 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:07:55,323 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:07:55,325 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91daab0b-f695-4635-8153-dc2a37ffdabe/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2023-11-06 22:07:58,557 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:07:58,782 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:07:58,783 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91daab0b-f695-4635-8153-dc2a37ffdabe/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2023-11-06 22:07:58,799 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91daab0b-f695-4635-8153-dc2a37ffdabe/bin/uautomizer-verify-WvqO1wxjHP/data/2d7b1d25f/2a60521d999e41eab565dfe1ec44f7c7/FLAGcfe723428 [2023-11-06 22:07:58,816 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91daab0b-f695-4635-8153-dc2a37ffdabe/bin/uautomizer-verify-WvqO1wxjHP/data/2d7b1d25f/2a60521d999e41eab565dfe1ec44f7c7 [2023-11-06 22:07:58,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:07:58,821 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:07:58,822 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:07:58,823 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:07:58,828 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:07:58,829 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:07:58" (1/1) ... [2023-11-06 22:07:58,831 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bbaf274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:58, skipping insertion in model container [2023-11-06 22:07:58,831 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:07:58" (1/1) ... [2023-11-06 22:07:58,867 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:07:59,147 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_91daab0b-f695-4635-8153-dc2a37ffdabe/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c[4085,4098] [2023-11-06 22:07:59,164 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:07:59,181 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:07:59,233 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_91daab0b-f695-4635-8153-dc2a37ffdabe/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c[4085,4098] [2023-11-06 22:07:59,246 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:07:59,262 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:07:59,264 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:07:59,273 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:07:59,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:59 WrapperNode [2023-11-06 22:07:59,274 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:07:59,276 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:07:59,276 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:07:59,277 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:07:59,286 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:59" (1/1) ... [2023-11-06 22:07:59,310 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:59" (1/1) ... [2023-11-06 22:07:59,365 INFO L138 Inliner]: procedures = 25, calls = 63, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 330 [2023-11-06 22:07:59,369 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:07:59,370 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:07:59,371 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:07:59,371 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:07:59,382 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:59" (1/1) ... [2023-11-06 22:07:59,382 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:59" (1/1) ... [2023-11-06 22:07:59,396 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:59" (1/1) ... [2023-11-06 22:07:59,402 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:59" (1/1) ... [2023-11-06 22:07:59,413 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:59" (1/1) ... [2023-11-06 22:07:59,437 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:59" (1/1) ... [2023-11-06 22:07:59,439 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:59" (1/1) ... [2023-11-06 22:07:59,442 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:59" (1/1) ... [2023-11-06 22:07:59,445 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:07:59,446 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:07:59,447 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:07:59,447 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:07:59,459 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:59" (1/1) ... [2023-11-06 22:07:59,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:07:59,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91daab0b-f695-4635-8153-dc2a37ffdabe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:59,496 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91daab0b-f695-4635-8153-dc2a37ffdabe/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:59,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91daab0b-f695-4635-8153-dc2a37ffdabe/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:07:59,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:07:59,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:07:59,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:07:59,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:07:59,554 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:07:59,554 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:07:59,554 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:07:59,555 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:07:59,555 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:07:59,555 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:07:59,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:07:59,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:07:59,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:07:59,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:07:59,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:07:59,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:07:59,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:07:59,560 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 22:07:59,705 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:07:59,707 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:08:00,261 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:08:00,448 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:08:00,448 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-06 22:08:00,451 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:08:00 BoogieIcfgContainer [2023-11-06 22:08:00,451 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:08:00,455 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:08:00,455 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:08:00,458 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:08:00,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:07:58" (1/3) ... [2023-11-06 22:08:00,460 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ff792c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:08:00, skipping insertion in model container [2023-11-06 22:08:00,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:59" (2/3) ... [2023-11-06 22:08:00,460 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ff792c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:08:00, skipping insertion in model container [2023-11-06 22:08:00,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:08:00" (3/3) ... [2023-11-06 22:08:00,462 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2023-11-06 22:08:00,471 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:08:00,505 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:08:00,505 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:08:00,505 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:08:00,655 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:08:00,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 274 places, 289 transitions, 599 flow [2023-11-06 22:08:00,919 INFO L124 PetriNetUnfolderBase]: 25/286 cut-off events. [2023-11-06 22:08:00,920 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:08:00,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 286 events. 25/286 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 213 event pairs, 0 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 246. Up to 3 conditions per place. [2023-11-06 22:08:00,929 INFO L82 GeneralOperation]: Start removeDead. Operand has 274 places, 289 transitions, 599 flow [2023-11-06 22:08:00,937 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 260 places, 275 transitions, 568 flow [2023-11-06 22:08:00,941 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:08:00,957 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 260 places, 275 transitions, 568 flow [2023-11-06 22:08:00,961 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 260 places, 275 transitions, 568 flow [2023-11-06 22:08:00,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 275 transitions, 568 flow [2023-11-06 22:08:01,052 INFO L124 PetriNetUnfolderBase]: 25/275 cut-off events. [2023-11-06 22:08:01,052 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:08:01,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 275 events. 25/275 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 212 event pairs, 0 based on Foata normal form. 0/250 useless extension candidates. Maximal degree in co-relation 246. Up to 3 conditions per place. [2023-11-06 22:08:01,061 INFO L119 LiptonReduction]: Number of co-enabled transitions 2976 [2023-11-06 22:08:12,035 INFO L134 LiptonReduction]: Checked pairs total: 5631 [2023-11-06 22:08:12,035 INFO L136 LiptonReduction]: Total number of compositions: 300 [2023-11-06 22:08:12,051 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:08:12,058 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;@5a304c97, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:08:12,059 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-06 22:08:12,067 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:08:12,068 INFO L124 PetriNetUnfolderBase]: 10/36 cut-off events. [2023-11-06 22:08:12,068 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:08:12,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:12,069 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 22:08:12,070 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:08:12,075 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:12,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1191806564, now seen corresponding path program 1 times [2023-11-06 22:08:12,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:12,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389516128] [2023-11-06 22:08:12,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:12,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:12,481 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 22:08:12,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:12,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389516128] [2023-11-06 22:08:12,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389516128] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:12,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:12,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:08:12,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454455905] [2023-11-06 22:08:12,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:12,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:08:12,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:12,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:08:12,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:08:12,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 589 [2023-11-06 22:08:12,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 92 flow. Second operand has 2 states, 2 states have (on average 269.0) internal successors, (538), 2 states have internal predecessors, (538), 0 states have call successors, (0), 0 states 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 22:08:12,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:12,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 589 [2023-11-06 22:08:12,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:12,805 INFO L124 PetriNetUnfolderBase]: 748/1046 cut-off events. [2023-11-06 22:08:12,806 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-11-06 22:08:12,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2180 conditions, 1046 events. 748/1046 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3209 event pairs, 493 based on Foata normal form. 0/791 useless extension candidates. Maximal degree in co-relation 1908. Up to 1047 conditions per place. [2023-11-06 22:08:12,821 INFO L140 encePairwiseOnDemand]: 587/589 looper letters, 35 selfloop transitions, 0 changer transitions 0/35 dead transitions. [2023-11-06 22:08:12,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 35 transitions, 158 flow [2023-11-06 22:08:12,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:08:12,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:08:12,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 553 transitions. [2023-11-06 22:08:12,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4694397283531409 [2023-11-06 22:08:12,853 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 553 transitions. [2023-11-06 22:08:12,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 553 transitions. [2023-11-06 22:08:12,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:12,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 553 transitions. [2023-11-06 22:08:12,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 276.5) internal successors, (553), 2 states have internal predecessors, (553), 0 states have call successors, (0), 0 states 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 22:08:12,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 589.0) internal successors, (1767), 3 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states 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 22:08:12,885 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 589.0) internal successors, (1767), 3 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states 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 22:08:12,887 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 92 flow. Second operand 2 states and 553 transitions. [2023-11-06 22:08:12,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 35 transitions, 158 flow [2023-11-06 22:08:12,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 35 transitions, 146 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 22:08:12,896 INFO L231 Difference]: Finished difference. Result has 32 places, 35 transitions, 76 flow [2023-11-06 22:08:12,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=76, PETRI_PLACES=32, PETRI_TRANSITIONS=35} [2023-11-06 22:08:12,903 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -5 predicate places. [2023-11-06 22:08:12,903 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 35 transitions, 76 flow [2023-11-06 22:08:12,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 269.0) internal successors, (538), 2 states have internal predecessors, (538), 0 states have call successors, (0), 0 states 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 22:08:12,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:12,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:08:12,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:08:12,906 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:08:12,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:12,909 INFO L85 PathProgramCache]: Analyzing trace with hash -2125914170, now seen corresponding path program 1 times [2023-11-06 22:08:12,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:12,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469095946] [2023-11-06 22:08:12,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:12,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:13,097 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 22:08:13,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:13,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469095946] [2023-11-06 22:08:13,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469095946] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:13,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:13,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:08:13,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220774216] [2023-11-06 22:08:13,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:13,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:13,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:13,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:13,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:13,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 589 [2023-11-06 22:08:13,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 35 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states 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 22:08:13,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:13,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 589 [2023-11-06 22:08:13,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:13,499 INFO L124 PetriNetUnfolderBase]: 1394/1943 cut-off events. [2023-11-06 22:08:13,499 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 22:08:13,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3945 conditions, 1943 events. 1394/1943 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7012 event pairs, 493 based on Foata normal form. 1/1455 useless extension candidates. Maximal degree in co-relation 3942. Up to 1003 conditions per place. [2023-11-06 22:08:13,514 INFO L140 encePairwiseOnDemand]: 586/589 looper letters, 52 selfloop transitions, 2 changer transitions 6/60 dead transitions. [2023-11-06 22:08:13,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 60 transitions, 251 flow [2023-11-06 22:08:13,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:13,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:08:13,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 829 transitions. [2023-11-06 22:08:13,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46915676287492925 [2023-11-06 22:08:13,520 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 829 transitions. [2023-11-06 22:08:13,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 829 transitions. [2023-11-06 22:08:13,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:13,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 829 transitions. [2023-11-06 22:08:13,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 276.3333333333333) internal successors, (829), 3 states have internal predecessors, (829), 0 states have call successors, (0), 0 states 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 22:08:13,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 589.0) internal successors, (2356), 4 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states 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 22:08:13,536 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 589.0) internal successors, (2356), 4 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states 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 22:08:13,537 INFO L175 Difference]: Start difference. First operand has 32 places, 35 transitions, 76 flow. Second operand 3 states and 829 transitions. [2023-11-06 22:08:13,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 60 transitions, 251 flow [2023-11-06 22:08:13,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 60 transitions, 251 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:08:13,541 INFO L231 Difference]: Finished difference. Result has 35 places, 36 transitions, 88 flow [2023-11-06 22:08:13,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=35, PETRI_TRANSITIONS=36} [2023-11-06 22:08:13,547 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2023-11-06 22:08:13,547 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 36 transitions, 88 flow [2023-11-06 22:08:13,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states 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 22:08:13,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:13,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:08:13,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:08:13,549 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:08:13,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:13,552 INFO L85 PathProgramCache]: Analyzing trace with hash 926582231, now seen corresponding path program 1 times [2023-11-06 22:08:13,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:13,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505185262] [2023-11-06 22:08:13,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:13,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:13,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:13,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:13,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:13,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505185262] [2023-11-06 22:08:13,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505185262] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:13,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:13,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:08:13,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058986742] [2023-11-06 22:08:13,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:13,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:13,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:13,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:13,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:13,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 589 [2023-11-06 22:08:13,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 36 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states 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 22:08:13,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:13,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 589 [2023-11-06 22:08:13,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:14,215 INFO L124 PetriNetUnfolderBase]: 1788/2493 cut-off events. [2023-11-06 22:08:14,215 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2023-11-06 22:08:14,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5263 conditions, 2493 events. 1788/2493 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 9447 event pairs, 455 based on Foata normal form. 90/1944 useless extension candidates. Maximal degree in co-relation 5258. Up to 1884 conditions per place. [2023-11-06 22:08:14,233 INFO L140 encePairwiseOnDemand]: 585/589 looper letters, 51 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2023-11-06 22:08:14,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 54 transitions, 239 flow [2023-11-06 22:08:14,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:14,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:08:14,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 815 transitions. [2023-11-06 22:08:14,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46123372948500285 [2023-11-06 22:08:14,238 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 815 transitions. [2023-11-06 22:08:14,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 815 transitions. [2023-11-06 22:08:14,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:14,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 815 transitions. [2023-11-06 22:08:14,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 271.6666666666667) internal successors, (815), 3 states have internal predecessors, (815), 0 states have call successors, (0), 0 states 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 22:08:14,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 589.0) internal successors, (2356), 4 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states 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 22:08:14,250 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 589.0) internal successors, (2356), 4 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states 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 22:08:14,250 INFO L175 Difference]: Start difference. First operand has 35 places, 36 transitions, 88 flow. Second operand 3 states and 815 transitions. [2023-11-06 22:08:14,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 54 transitions, 239 flow [2023-11-06 22:08:14,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 54 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:08:14,255 INFO L231 Difference]: Finished difference. Result has 37 places, 38 transitions, 105 flow [2023-11-06 22:08:14,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=37, PETRI_TRANSITIONS=38} [2023-11-06 22:08:14,257 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2023-11-06 22:08:14,261 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 38 transitions, 105 flow [2023-11-06 22:08:14,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states 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 22:08:14,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:14,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:08:14,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:08:14,263 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:08:14,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:14,264 INFO L85 PathProgramCache]: Analyzing trace with hash -243327421, now seen corresponding path program 2 times [2023-11-06 22:08:14,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:14,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104701916] [2023-11-06 22:08:14,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:14,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:14,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:14,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:14,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104701916] [2023-11-06 22:08:14,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104701916] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:14,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:14,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:08:14,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513340208] [2023-11-06 22:08:14,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:14,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:14,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:14,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:14,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:14,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 589 [2023-11-06 22:08:14,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 38 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states 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 22:08:14,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:14,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 589 [2023-11-06 22:08:14,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:14,793 INFO L124 PetriNetUnfolderBase]: 1784/2505 cut-off events. [2023-11-06 22:08:14,793 INFO L125 PetriNetUnfolderBase]: For 418/418 co-relation queries the response was YES. [2023-11-06 22:08:14,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5741 conditions, 2505 events. 1784/2505 cut-off events. For 418/418 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 9171 event pairs, 567 based on Foata normal form. 108/2094 useless extension candidates. Maximal degree in co-relation 5735. Up to 1456 conditions per place. [2023-11-06 22:08:14,812 INFO L140 encePairwiseOnDemand]: 585/589 looper letters, 52 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2023-11-06 22:08:14,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 55 transitions, 261 flow [2023-11-06 22:08:14,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:14,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:08:14,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 814 transitions. [2023-11-06 22:08:14,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46066779852857953 [2023-11-06 22:08:14,816 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 814 transitions. [2023-11-06 22:08:14,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 814 transitions. [2023-11-06 22:08:14,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:14,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 814 transitions. [2023-11-06 22:08:14,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 271.3333333333333) internal successors, (814), 3 states have internal predecessors, (814), 0 states have call successors, (0), 0 states 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 22:08:14,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 589.0) internal successors, (2356), 4 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states 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 22:08:14,828 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 589.0) internal successors, (2356), 4 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states 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 22:08:14,828 INFO L175 Difference]: Start difference. First operand has 37 places, 38 transitions, 105 flow. Second operand 3 states and 814 transitions. [2023-11-06 22:08:14,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 55 transitions, 261 flow [2023-11-06 22:08:14,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 55 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:08:14,831 INFO L231 Difference]: Finished difference. Result has 39 places, 40 transitions, 121 flow [2023-11-06 22:08:14,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=39, PETRI_TRANSITIONS=40} [2023-11-06 22:08:14,832 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places. [2023-11-06 22:08:14,833 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 40 transitions, 121 flow [2023-11-06 22:08:14,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states 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 22:08:14,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:14,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:08:14,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:08:14,834 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:08:14,835 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:14,835 INFO L85 PathProgramCache]: Analyzing trace with hash -420886995, now seen corresponding path program 3 times [2023-11-06 22:08:14,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:14,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178500430] [2023-11-06 22:08:14,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:14,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:14,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:14,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:14,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178500430] [2023-11-06 22:08:14,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178500430] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:14,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:14,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:08:14,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80243541] [2023-11-06 22:08:14,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:14,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:14,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:14,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:14,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:14,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 589 [2023-11-06 22:08:14,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 40 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states 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 22:08:14,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:14,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 589 [2023-11-06 22:08:14,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:15,343 INFO L124 PetriNetUnfolderBase]: 2022/2857 cut-off events. [2023-11-06 22:08:15,344 INFO L125 PetriNetUnfolderBase]: For 531/531 co-relation queries the response was YES. [2023-11-06 22:08:15,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7106 conditions, 2857 events. 2022/2857 cut-off events. For 531/531 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 11764 event pairs, 437 based on Foata normal form. 128/2422 useless extension candidates. Maximal degree in co-relation 7099. Up to 1842 conditions per place. [2023-11-06 22:08:15,368 INFO L140 encePairwiseOnDemand]: 586/589 looper letters, 52 selfloop transitions, 3 changer transitions 1/56 dead transitions. [2023-11-06 22:08:15,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 56 transitions, 281 flow [2023-11-06 22:08:15,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:15,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:08:15,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 809 transitions. [2023-11-06 22:08:15,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4578381437464629 [2023-11-06 22:08:15,372 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 809 transitions. [2023-11-06 22:08:15,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 809 transitions. [2023-11-06 22:08:15,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:15,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 809 transitions. [2023-11-06 22:08:15,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 269.6666666666667) internal successors, (809), 3 states have internal predecessors, (809), 0 states have call successors, (0), 0 states 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 22:08:15,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 589.0) internal successors, (2356), 4 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states 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 22:08:15,383 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 589.0) internal successors, (2356), 4 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states 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 22:08:15,383 INFO L175 Difference]: Start difference. First operand has 39 places, 40 transitions, 121 flow. Second operand 3 states and 809 transitions. [2023-11-06 22:08:15,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 56 transitions, 281 flow [2023-11-06 22:08:15,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 56 transitions, 276 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:08:15,386 INFO L231 Difference]: Finished difference. Result has 42 places, 40 transitions, 132 flow [2023-11-06 22:08:15,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=42, PETRI_TRANSITIONS=40} [2023-11-06 22:08:15,387 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 5 predicate places. [2023-11-06 22:08:15,388 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 40 transitions, 132 flow [2023-11-06 22:08:15,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states 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 22:08:15,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:15,389 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:08:15,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:08:15,389 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:08:15,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:15,390 INFO L85 PathProgramCache]: Analyzing trace with hash -2022001797, now seen corresponding path program 1 times [2023-11-06 22:08:15,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:15,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349969732] [2023-11-06 22:08:15,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:15,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:15,488 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:15,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:15,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349969732] [2023-11-06 22:08:15,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349969732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:15,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:15,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:08:15,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703411600] [2023-11-06 22:08:15,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:15,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:15,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:15,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:15,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:15,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 589 [2023-11-06 22:08:15,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 258.0) internal successors, (774), 3 states have internal predecessors, (774), 0 states have call successors, (0), 0 states 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 22:08:15,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:15,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 589 [2023-11-06 22:08:15,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:16,170 INFO L124 PetriNetUnfolderBase]: 2934/4139 cut-off events. [2023-11-06 22:08:16,170 INFO L125 PetriNetUnfolderBase]: For 1876/1876 co-relation queries the response was YES. [2023-11-06 22:08:16,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10831 conditions, 4139 events. 2934/4139 cut-off events. For 1876/1876 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 17676 event pairs, 1018 based on Foata normal form. 0/3320 useless extension candidates. Maximal degree in co-relation 10823. Up to 2620 conditions per place. [2023-11-06 22:08:16,194 INFO L140 encePairwiseOnDemand]: 584/589 looper letters, 50 selfloop transitions, 4 changer transitions 6/60 dead transitions. [2023-11-06 22:08:16,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 60 transitions, 312 flow [2023-11-06 22:08:16,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:16,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:08:16,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 797 transitions. [2023-11-06 22:08:16,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4510469722693831 [2023-11-06 22:08:16,198 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 797 transitions. [2023-11-06 22:08:16,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 797 transitions. [2023-11-06 22:08:16,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:16,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 797 transitions. [2023-11-06 22:08:16,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.6666666666667) internal successors, (797), 3 states have internal predecessors, (797), 0 states have call successors, (0), 0 states 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 22:08:16,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 589.0) internal successors, (2356), 4 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states 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 22:08:16,209 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 589.0) internal successors, (2356), 4 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states 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 22:08:16,209 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 132 flow. Second operand 3 states and 797 transitions. [2023-11-06 22:08:16,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 60 transitions, 312 flow [2023-11-06 22:08:16,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 60 transitions, 306 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:08:16,214 INFO L231 Difference]: Finished difference. Result has 44 places, 44 transitions, 160 flow [2023-11-06 22:08:16,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=44, PETRI_TRANSITIONS=44} [2023-11-06 22:08:16,215 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2023-11-06 22:08:16,215 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 44 transitions, 160 flow [2023-11-06 22:08:16,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.0) internal successors, (774), 3 states have internal predecessors, (774), 0 states have call successors, (0), 0 states 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 22:08:16,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:16,216 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:08:16,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:08:16,217 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:08:16,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:16,217 INFO L85 PathProgramCache]: Analyzing trace with hash -64379749, now seen corresponding path program 2 times [2023-11-06 22:08:16,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:16,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235533375] [2023-11-06 22:08:16,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:16,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:16,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:08:16,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:16,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235533375] [2023-11-06 22:08:16,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235533375] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:16,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:16,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:08:16,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950606386] [2023-11-06 22:08:16,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:16,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:08:16,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:16,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:08:16,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:08:16,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 589 [2023-11-06 22:08:16,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 44 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 245.5) internal successors, (982), 4 states have internal predecessors, (982), 0 states have call successors, (0), 0 states 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 22:08:16,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:16,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 589 [2023-11-06 22:08:16,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:17,102 INFO L124 PetriNetUnfolderBase]: 2963/4200 cut-off events. [2023-11-06 22:08:17,102 INFO L125 PetriNetUnfolderBase]: For 2171/2171 co-relation queries the response was YES. [2023-11-06 22:08:17,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11834 conditions, 4200 events. 2963/4200 cut-off events. For 2171/2171 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 17208 event pairs, 1769 based on Foata normal form. 14/3518 useless extension candidates. Maximal degree in co-relation 11825. Up to 4140 conditions per place. [2023-11-06 22:08:17,130 INFO L140 encePairwiseOnDemand]: 585/589 looper letters, 43 selfloop transitions, 2 changer transitions 14/59 dead transitions. [2023-11-06 22:08:17,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 59 transitions, 315 flow [2023-11-06 22:08:17,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:08:17,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:08:17,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1003 transitions. [2023-11-06 22:08:17,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4257215619694397 [2023-11-06 22:08:17,136 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1003 transitions. [2023-11-06 22:08:17,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1003 transitions. [2023-11-06 22:08:17,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:17,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1003 transitions. [2023-11-06 22:08:17,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 250.75) internal successors, (1003), 4 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states 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 22:08:17,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 589.0) internal successors, (2945), 5 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states 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 22:08:17,182 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 589.0) internal successors, (2945), 5 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states 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 22:08:17,182 INFO L175 Difference]: Start difference. First operand has 44 places, 44 transitions, 160 flow. Second operand 4 states and 1003 transitions. [2023-11-06 22:08:17,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 59 transitions, 315 flow [2023-11-06 22:08:17,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 59 transitions, 307 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:08:17,192 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 166 flow [2023-11-06 22:08:17,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2023-11-06 22:08:17,193 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2023-11-06 22:08:17,194 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 166 flow [2023-11-06 22:08:17,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 245.5) internal successors, (982), 4 states have internal predecessors, (982), 0 states have call successors, (0), 0 states 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 22:08:17,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:17,196 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:08:17,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:08:17,196 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:08:17,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:17,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1924498719, now seen corresponding path program 1 times [2023-11-06 22:08:17,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:17,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506907234] [2023-11-06 22:08:17,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:17,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:17,433 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 22:08:17,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:17,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506907234] [2023-11-06 22:08:17,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506907234] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:17,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:17,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:08:17,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697652824] [2023-11-06 22:08:17,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:17,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:08:17,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:17,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:08:17,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:08:17,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 589 [2023-11-06 22:08:17,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 245.5) internal successors, (982), 4 states have internal predecessors, (982), 0 states have call successors, (0), 0 states 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 22:08:17,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:17,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 589 [2023-11-06 22:08:17,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:18,366 INFO L124 PetriNetUnfolderBase]: 4046/5849 cut-off events. [2023-11-06 22:08:18,367 INFO L125 PetriNetUnfolderBase]: For 2738/2738 co-relation queries the response was YES. [2023-11-06 22:08:18,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16184 conditions, 5849 events. 4046/5849 cut-off events. For 2738/2738 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 26550 event pairs, 2507 based on Foata normal form. 116/4944 useless extension candidates. Maximal degree in co-relation 16173. Up to 4141 conditions per place. [2023-11-06 22:08:18,409 INFO L140 encePairwiseOnDemand]: 584/589 looper letters, 44 selfloop transitions, 2 changer transitions 29/75 dead transitions. [2023-11-06 22:08:18,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 75 transitions, 422 flow [2023-11-06 22:08:18,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:08:18,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:08:18,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1012 transitions. [2023-11-06 22:08:18,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4295415959252971 [2023-11-06 22:08:18,415 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1012 transitions. [2023-11-06 22:08:18,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1012 transitions. [2023-11-06 22:08:18,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:18,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1012 transitions. [2023-11-06 22:08:18,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states 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 22:08:18,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 589.0) internal successors, (2945), 5 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states 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 22:08:18,429 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 589.0) internal successors, (2945), 5 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states 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 22:08:18,429 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 166 flow. Second operand 4 states and 1012 transitions. [2023-11-06 22:08:18,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 75 transitions, 422 flow [2023-11-06 22:08:18,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 75 transitions, 414 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-06 22:08:18,437 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 176 flow [2023-11-06 22:08:18,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2023-11-06 22:08:18,440 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 12 predicate places. [2023-11-06 22:08:18,441 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 176 flow [2023-11-06 22:08:18,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 245.5) internal successors, (982), 4 states have internal predecessors, (982), 0 states have call successors, (0), 0 states 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 22:08:18,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:18,442 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:08:18,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:08:18,442 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:08:18,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:18,443 INFO L85 PathProgramCache]: Analyzing trace with hash -544286584, now seen corresponding path program 1 times [2023-11-06 22:08:18,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:18,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138677348] [2023-11-06 22:08:18,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:18,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:18,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:18,689 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:08:18,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:18,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138677348] [2023-11-06 22:08:18,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138677348] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:18,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:18,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:08:18,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530248501] [2023-11-06 22:08:18,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:18,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:08:18,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:18,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:08:18,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:08:18,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 589 [2023-11-06 22:08:18,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states 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 22:08:18,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:18,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 589 [2023-11-06 22:08:18,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:19,632 INFO L124 PetriNetUnfolderBase]: 4082/5845 cut-off events. [2023-11-06 22:08:19,632 INFO L125 PetriNetUnfolderBase]: For 2676/2676 co-relation queries the response was YES. [2023-11-06 22:08:19,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16471 conditions, 5845 events. 4082/5845 cut-off events. For 2676/2676 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 26137 event pairs, 2492 based on Foata normal form. 176/4892 useless extension candidates. Maximal degree in co-relation 16459. Up to 4142 conditions per place. [2023-11-06 22:08:19,662 INFO L140 encePairwiseOnDemand]: 583/589 looper letters, 45 selfloop transitions, 2 changer transitions 32/79 dead transitions. [2023-11-06 22:08:19,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 79 transitions, 455 flow [2023-11-06 22:08:19,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:08:19,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:08:19,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1015 transitions. [2023-11-06 22:08:19,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43081494057724956 [2023-11-06 22:08:19,667 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1015 transitions. [2023-11-06 22:08:19,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1015 transitions. [2023-11-06 22:08:19,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:19,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1015 transitions. [2023-11-06 22:08:19,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 253.75) internal successors, (1015), 4 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states 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 22:08:19,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 589.0) internal successors, (2945), 5 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states 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 22:08:19,678 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 589.0) internal successors, (2945), 5 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states 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 22:08:19,679 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 176 flow. Second operand 4 states and 1015 transitions. [2023-11-06 22:08:19,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 79 transitions, 455 flow [2023-11-06 22:08:19,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 79 transitions, 443 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-06 22:08:19,684 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 186 flow [2023-11-06 22:08:19,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2023-11-06 22:08:19,685 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 14 predicate places. [2023-11-06 22:08:19,685 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 186 flow [2023-11-06 22:08:19,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states 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 22:08:19,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:19,686 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:08:19,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:08:19,687 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:08:19,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:19,687 INFO L85 PathProgramCache]: Analyzing trace with hash 617212454, now seen corresponding path program 1 times [2023-11-06 22:08:19,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:19,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594628175] [2023-11-06 22:08:19,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:19,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:20,038 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:08:20,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:20,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594628175] [2023-11-06 22:08:20,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594628175] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:08:20,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632583273] [2023-11-06 22:08:20,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:20,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:20,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91daab0b-f695-4635-8153-dc2a37ffdabe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:08:20,044 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91daab0b-f695-4635-8153-dc2a37ffdabe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:08:20,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91daab0b-f695-4635-8153-dc2a37ffdabe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:08:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:20,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:08:20,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:08:20,554 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:08:20,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:08:20,656 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:08:20,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632583273] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:08:20,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:08:20,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 22:08:20,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116839237] [2023-11-06 22:08:20,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:08:20,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:08:20,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:20,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:08:20,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:08:21,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 589 [2023-11-06 22:08:21,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 186 flow. Second operand has 13 states, 13 states have (on average 233.84615384615384) internal successors, (3040), 13 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states 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 22:08:21,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:21,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 589 [2023-11-06 22:08:21,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:22,190 INFO L124 PetriNetUnfolderBase]: 3465/4996 cut-off events. [2023-11-06 22:08:22,191 INFO L125 PetriNetUnfolderBase]: For 2412/2412 co-relation queries the response was YES. [2023-11-06 22:08:22,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14090 conditions, 4996 events. 3465/4996 cut-off events. For 2412/2412 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 21811 event pairs, 1835 based on Foata normal form. 198/4250 useless extension candidates. Maximal degree in co-relation 14077. Up to 4142 conditions per place. [2023-11-06 22:08:22,220 INFO L140 encePairwiseOnDemand]: 583/589 looper letters, 45 selfloop transitions, 3 changer transitions 50/98 dead transitions. [2023-11-06 22:08:22,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 98 transitions, 567 flow [2023-11-06 22:08:22,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:08:22,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:08:22,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1690 transitions. [2023-11-06 22:08:22,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40989570700945915 [2023-11-06 22:08:22,232 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1690 transitions. [2023-11-06 22:08:22,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1690 transitions. [2023-11-06 22:08:22,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:22,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1690 transitions. [2023-11-06 22:08:22,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 241.42857142857142) internal successors, (1690), 7 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states 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 22:08:22,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 589.0) internal successors, (4712), 8 states have internal predecessors, (4712), 0 states have call successors, (0), 0 states 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 22:08:22,250 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 589.0) internal successors, (4712), 8 states have internal predecessors, (4712), 0 states have call successors, (0), 0 states 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 22:08:22,251 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 186 flow. Second operand 7 states and 1690 transitions. [2023-11-06 22:08:22,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 98 transitions, 567 flow [2023-11-06 22:08:22,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 98 transitions, 559 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 22:08:22,260 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 206 flow [2023-11-06 22:08:22,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=206, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2023-11-06 22:08:22,262 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 22 predicate places. [2023-11-06 22:08:22,262 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 206 flow [2023-11-06 22:08:22,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 233.84615384615384) internal successors, (3040), 13 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states 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 22:08:22,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:22,281 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:08:22,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91daab0b-f695-4635-8153-dc2a37ffdabe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:08:22,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91daab0b-f695-4635-8153-dc2a37ffdabe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:22,488 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:08:22,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:22,489 INFO L85 PathProgramCache]: Analyzing trace with hash 2003242788, now seen corresponding path program 2 times [2023-11-06 22:08:22,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:22,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282759653] [2023-11-06 22:08:22,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:22,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:22,841 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 22:08:22,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:22,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282759653] [2023-11-06 22:08:22,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282759653] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:08:22,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418225037] [2023-11-06 22:08:22,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:08:22,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:22,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91daab0b-f695-4635-8153-dc2a37ffdabe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:08:22,845 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91daab0b-f695-4635-8153-dc2a37ffdabe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:08:22,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91daab0b-f695-4635-8153-dc2a37ffdabe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:08:23,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:08:23,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:08:23,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:08:23,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:08:23,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:23,262 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2023-11-06 22:08:23,267 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 22:08:23,268 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:08:23,328 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 28 [2023-11-06 22:08:23,359 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 22:08:23,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418225037] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:08:23,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:08:23,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-06 22:08:23,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515872396] [2023-11-06 22:08:23,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:08:23,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:08:23,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:23,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:08:23,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=75, Unknown=3, NotChecked=0, Total=110 [2023-11-06 22:08:23,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 589 [2023-11-06 22:08:23,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 206 flow. Second operand has 11 states, 11 states have (on average 229.27272727272728) internal successors, (2522), 11 states have internal predecessors, (2522), 0 states have call successors, (0), 0 states 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 22:08:23,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:23,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 589 [2023-11-06 22:08:23,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:24,715 INFO L124 PetriNetUnfolderBase]: 3734/5255 cut-off events. [2023-11-06 22:08:24,715 INFO L125 PetriNetUnfolderBase]: For 3168/3168 co-relation queries the response was YES. [2023-11-06 22:08:24,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15245 conditions, 5255 events. 3734/5255 cut-off events. For 3168/3168 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 23235 event pairs, 1278 based on Foata normal form. 0/4214 useless extension candidates. Maximal degree in co-relation 15228. Up to 2680 conditions per place. [2023-11-06 22:08:24,765 INFO L140 encePairwiseOnDemand]: 583/589 looper letters, 44 selfloop transitions, 5 changer transitions 17/66 dead transitions. [2023-11-06 22:08:24,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 66 transitions, 404 flow [2023-11-06 22:08:24,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:08:24,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:08:24,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1173 transitions. [2023-11-06 22:08:24,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39830220713073006 [2023-11-06 22:08:24,773 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1173 transitions. [2023-11-06 22:08:24,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1173 transitions. [2023-11-06 22:08:24,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:24,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1173 transitions. [2023-11-06 22:08:24,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 234.6) internal successors, (1173), 5 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states 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 22:08:24,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 589.0) internal successors, (3534), 6 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states 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 22:08:24,788 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 589.0) internal successors, (3534), 6 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states 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 22:08:24,788 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 206 flow. Second operand 5 states and 1173 transitions. [2023-11-06 22:08:24,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 66 transitions, 404 flow [2023-11-06 22:08:24,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 66 transitions, 388 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-11-06 22:08:24,799 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 197 flow [2023-11-06 22:08:24,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=197, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2023-11-06 22:08:24,800 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 19 predicate places. [2023-11-06 22:08:24,801 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 197 flow [2023-11-06 22:08:24,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 229.27272727272728) internal successors, (2522), 11 states have internal predecessors, (2522), 0 states have call successors, (0), 0 states 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 22:08:24,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:24,802 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:08:24,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91daab0b-f695-4635-8153-dc2a37ffdabe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:08:25,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91daab0b-f695-4635-8153-dc2a37ffdabe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:25,013 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:08:25,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:25,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1265357854, now seen corresponding path program 3 times [2023-11-06 22:08:25,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:25,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652133540] [2023-11-06 22:08:25,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:25,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:25,326 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 22:08:25,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:25,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652133540] [2023-11-06 22:08:25,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652133540] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:25,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:25,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:08:25,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063130035] [2023-11-06 22:08:25,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:25,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:08:25,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:25,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:08:25,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:08:25,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 589 [2023-11-06 22:08:25,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 242.6) internal successors, (1213), 5 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states 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 22:08:25,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:25,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 589 [2023-11-06 22:08:25,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:26,093 INFO L124 PetriNetUnfolderBase]: 2728/3863 cut-off events. [2023-11-06 22:08:26,093 INFO L125 PetriNetUnfolderBase]: For 2748/2748 co-relation queries the response was YES. [2023-11-06 22:08:26,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11346 conditions, 3863 events. 2728/3863 cut-off events. For 2748/2748 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 16623 event pairs, 878 based on Foata normal form. 20/3204 useless extension candidates. Maximal degree in co-relation 11331. Up to 2227 conditions per place. [2023-11-06 22:08:26,116 INFO L140 encePairwiseOnDemand]: 583/589 looper letters, 50 selfloop transitions, 5 changer transitions 8/63 dead transitions. [2023-11-06 22:08:26,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 63 transitions, 392 flow [2023-11-06 22:08:26,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:08:26,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:08:26,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1230 transitions. [2023-11-06 22:08:26,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41765704584040747 [2023-11-06 22:08:26,123 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1230 transitions. [2023-11-06 22:08:26,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1230 transitions. [2023-11-06 22:08:26,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:26,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1230 transitions. [2023-11-06 22:08:26,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 246.0) internal successors, (1230), 5 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states 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 22:08:26,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 589.0) internal successors, (3534), 6 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states 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 22:08:26,135 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 589.0) internal successors, (3534), 6 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states 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 22:08:26,135 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 197 flow. Second operand 5 states and 1230 transitions. [2023-11-06 22:08:26,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 63 transitions, 392 flow [2023-11-06 22:08:26,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 63 transitions, 377 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-06 22:08:26,142 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 201 flow [2023-11-06 22:08:26,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=201, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2023-11-06 22:08:26,143 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 20 predicate places. [2023-11-06 22:08:26,144 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 201 flow [2023-11-06 22:08:26,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 242.6) internal successors, (1213), 5 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states 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 22:08:26,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:26,144 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:08:26,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:08:26,145 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:08:26,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:26,145 INFO L85 PathProgramCache]: Analyzing trace with hash -2115165598, now seen corresponding path program 4 times [2023-11-06 22:08:26,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:26,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974779729] [2023-11-06 22:08:26,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:26,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:26,639 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 22:08:26,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:26,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974779729] [2023-11-06 22:08:26,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974779729] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:08:26,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673466881] [2023-11-06 22:08:26,640 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:08:26,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:26,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91daab0b-f695-4635-8153-dc2a37ffdabe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:08:26,642 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91daab0b-f695-4635-8153-dc2a37ffdabe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:08:26,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91daab0b-f695-4635-8153-dc2a37ffdabe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:08:26,828 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:08:26,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:08:26,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:08:26,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:08:26,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:26,950 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2023-11-06 22:08:27,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:27,004 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2023-11-06 22:08:27,019 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 22:08:27,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:08:27,094 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_348 (Array Int Int)) (v_ArrVal_349 (Array Int Int))) (not (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_348) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_349) c_~q1~0.base) (+ (* c_~q1_back~0 4) c_~q1~0.offset)) 2))) is different from false [2023-11-06 22:08:27,107 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 142 [2023-11-06 22:08:27,173 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 22:08:27,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673466881] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:08:27,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:08:27,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 12 [2023-11-06 22:08:27,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839348996] [2023-11-06 22:08:27,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:08:27,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:08:27,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:27,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:08:27,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=4, NotChecked=20, Total=156 [2023-11-06 22:08:27,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 589 [2023-11-06 22:08:27,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 201 flow. Second operand has 13 states, 13 states have (on average 225.46153846153845) internal successors, (2931), 13 states have internal predecessors, (2931), 0 states have call successors, (0), 0 states 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 22:08:27,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:27,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 589 [2023-11-06 22:08:27,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:27,679 INFO L124 PetriNetUnfolderBase]: 1712/2424 cut-off events. [2023-11-06 22:08:27,679 INFO L125 PetriNetUnfolderBase]: For 2270/2270 co-relation queries the response was YES. [2023-11-06 22:08:27,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7146 conditions, 2424 events. 1712/2424 cut-off events. For 2270/2270 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 8986 event pairs, 1026 based on Foata normal form. 104/2061 useless extension candidates. Maximal degree in co-relation 7131. Up to 2404 conditions per place. [2023-11-06 22:08:27,688 INFO L140 encePairwiseOnDemand]: 584/589 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2023-11-06 22:08:27,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 42 transitions, 284 flow [2023-11-06 22:08:27,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:08:27,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:08:27,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1138 transitions. [2023-11-06 22:08:27,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3864176570458404 [2023-11-06 22:08:27,695 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1138 transitions. [2023-11-06 22:08:27,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1138 transitions. [2023-11-06 22:08:27,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:27,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1138 transitions. [2023-11-06 22:08:27,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 227.6) internal successors, (1138), 5 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states 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 22:08:27,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 589.0) internal successors, (3534), 6 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states 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 22:08:27,706 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 589.0) internal successors, (3534), 6 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states 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 22:08:27,706 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 201 flow. Second operand 5 states and 1138 transitions. [2023-11-06 22:08:27,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 42 transitions, 284 flow [2023-11-06 22:08:27,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 42 transitions, 261 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-06 22:08:27,709 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2023-11-06 22:08:27,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2023-11-06 22:08:27,710 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 13 predicate places. [2023-11-06 22:08:27,711 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2023-11-06 22:08:27,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 225.46153846153845) internal successors, (2931), 13 states have internal predecessors, (2931), 0 states have call successors, (0), 0 states 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 22:08:27,714 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-06 22:08:27,715 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-06 22:08:27,715 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-06 22:08:27,715 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-06 22:08:27,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91daab0b-f695-4635-8153-dc2a37ffdabe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:08:27,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91daab0b-f695-4635-8153-dc2a37ffdabe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:08:27,922 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 2, 1, 1, 1, 1] [2023-11-06 22:08:27,925 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:08:27,926 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:08:27,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:08:27 BasicIcfg [2023-11-06 22:08:27,929 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:08:27,930 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:08:27,930 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:08:27,930 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:08:27,931 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:08:00" (3/4) ... [2023-11-06 22:08:27,932 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:08:27,936 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 22:08:27,936 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 22:08:27,936 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-06 22:08:27,949 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2023-11-06 22:08:27,950 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 22:08:27,950 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:08:27,951 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:08:28,040 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91daab0b-f695-4635-8153-dc2a37ffdabe/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:08:28,041 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91daab0b-f695-4635-8153-dc2a37ffdabe/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:08:28,041 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:08:28,042 INFO L158 Benchmark]: Toolchain (without parser) took 29220.76ms. Allocated memory was 167.8MB in the beginning and 956.3MB in the end (delta: 788.5MB). Free memory was 125.8MB in the beginning and 344.1MB in the end (delta: -218.3MB). Peak memory consumption was 571.8MB. Max. memory is 16.1GB. [2023-11-06 22:08:28,042 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 167.8MB. Free memory is still 114.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:08:28,042 INFO L158 Benchmark]: CACSL2BoogieTranslator took 452.06ms. Allocated memory is still 167.8MB. Free memory was 125.8MB in the beginning and 112.6MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 22:08:28,043 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.04ms. Allocated memory is still 167.8MB. Free memory was 112.6MB in the beginning and 109.8MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 22:08:28,043 INFO L158 Benchmark]: Boogie Preprocessor took 75.35ms. Allocated memory is still 167.8MB. Free memory was 109.8MB in the beginning and 107.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:08:28,044 INFO L158 Benchmark]: RCFGBuilder took 1005.19ms. Allocated memory is still 167.8MB. Free memory was 107.7MB in the beginning and 63.6MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2023-11-06 22:08:28,044 INFO L158 Benchmark]: TraceAbstraction took 27474.71ms. Allocated memory was 167.8MB in the beginning and 956.3MB in the end (delta: 788.5MB). Free memory was 63.6MB in the beginning and 349.3MB in the end (delta: -285.7MB). Peak memory consumption was 504.6MB. Max. memory is 16.1GB. [2023-11-06 22:08:28,044 INFO L158 Benchmark]: Witness Printer took 111.24ms. Allocated memory is still 956.3MB. Free memory was 349.3MB in the beginning and 344.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 22:08:28,047 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 167.8MB. Free memory is still 114.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 452.06ms. Allocated memory is still 167.8MB. Free memory was 125.8MB in the beginning and 112.6MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.04ms. Allocated memory is still 167.8MB. Free memory was 112.6MB in the beginning and 109.8MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 75.35ms. Allocated memory is still 167.8MB. Free memory was 109.8MB in the beginning and 107.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1005.19ms. Allocated memory is still 167.8MB. Free memory was 107.7MB in the beginning and 63.6MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * TraceAbstraction took 27474.71ms. Allocated memory was 167.8MB in the beginning and 956.3MB in the end (delta: 788.5MB). Free memory was 63.6MB in the beginning and 349.3MB in the end (delta: -285.7MB). Peak memory consumption was 504.6MB. Max. memory is 16.1GB. * Witness Printer took 111.24ms. Allocated memory is still 956.3MB. Free memory was 349.3MB in the beginning and 344.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.1s, 260 PlacesBefore, 37 PlacesAfterwards, 275 TransitionsBefore, 37 TransitionsAfterwards, 2976 CoEnabledTransitionPairs, 8 FixpointIterations, 180 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 43 TrivialYvCompositions, 16 ConcurrentYvCompositions, 15 ChoiceCompositions, 300 TotalNumberOfCompositions, 5631 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3934, independent: 3791, independent conditional: 0, independent unconditional: 3791, dependent: 143, dependent conditional: 0, dependent unconditional: 143, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1764, independent: 1733, independent conditional: 0, independent unconditional: 1733, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3934, independent: 2058, independent conditional: 0, independent unconditional: 2058, dependent: 112, dependent conditional: 0, dependent unconditional: 112, unknown: 1764, unknown conditional: 0, unknown unconditional: 1764] , Statistics on independence cache: Total cache size (in pairs): 153, Positive cache size: 141, Positive conditional cache size: 0, Positive unconditional cache size: 141, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 156]: 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 7 procedures, 312 locations, 4 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: 27.2s, OverallIterations: 13, TraceHistogramMax: 2, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 10.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 11.3s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 1200 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 835 mSDsluCounter, 530 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 54 IncrementalHoareTripleChecker+Unchecked, 387 mSDsCounter, 76 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2844 IncrementalHoareTripleChecker+Invalid, 2980 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 76 mSolverCounterUnsat, 143 mSDtfsCounter, 2844 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 250 GetRequests, 199 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=206occurred in iteration=10, InterpolantAutomatonStates: 51, 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: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 486 NumberOfCodeBlocks, 486 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 568 ConstructedInterpolants, 10 QuantifiedInterpolants, 2144 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1071 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 19 InterpolantComputations, 10 PerfectInterpolantSequences, 90/106 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 22:08:28,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91daab0b-f695-4635-8153-dc2a37ffdabe/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