./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/rfi003_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_adff5039-79f8-4f2b-9e1b-ff911bdc16e4/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adff5039-79f8-4f2b-9e1b-ff911bdc16e4/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adff5039-79f8-4f2b-9e1b-ff911bdc16e4/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adff5039-79f8-4f2b-9e1b-ff911bdc16e4/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/rfi003_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adff5039-79f8-4f2b-9e1b-ff911bdc16e4/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adff5039-79f8-4f2b-9e1b-ff911bdc16e4/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 503cbc793fb2369a7e5308c15a611fe38888f935ec98bb5d473194a0a60e31e4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:23:16,152 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:23:16,213 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adff5039-79f8-4f2b-9e1b-ff911bdc16e4/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 04:23:16,218 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:23:16,219 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:23:16,240 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:23:16,240 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:23:16,241 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:23:16,242 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:23:16,242 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:23:16,243 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:23:16,243 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:23:16,244 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:23:16,244 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:23:16,245 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:23:16,245 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:23:16,246 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:23:16,246 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:23:16,247 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:23:16,247 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:23:16,248 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:23:16,248 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:23:16,249 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:23:16,249 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:23:16,249 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:23:16,250 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:23:16,250 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:23:16,251 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:23:16,251 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:23:16,251 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:23:16,252 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:23:16,252 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:23:16,252 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:23:16,252 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:23:16,253 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:23:16,253 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:23:16,253 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:23:16,253 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:23:16,253 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:23:16,253 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:23:16,254 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:23:16,254 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:23:16,254 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_adff5039-79f8-4f2b-9e1b-ff911bdc16e4/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adff5039-79f8-4f2b-9e1b-ff911bdc16e4/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503cbc793fb2369a7e5308c15a611fe38888f935ec98bb5d473194a0a60e31e4 [2023-11-29 04:23:16,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:23:16,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:23:16,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:23:16,503 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:23:16,503 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:23:16,505 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adff5039-79f8-4f2b-9e1b-ff911bdc16e4/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread-wmm/rfi003_tso.i [2023-11-29 04:23:19,257 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:23:19,502 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:23:19,503 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adff5039-79f8-4f2b-9e1b-ff911bdc16e4/sv-benchmarks/c/pthread-wmm/rfi003_tso.i [2023-11-29 04:23:19,521 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adff5039-79f8-4f2b-9e1b-ff911bdc16e4/bin/uautomizer-verify-BQ2R08f2Ya/data/f0be765b5/94cc92321c15422fac1ca655cbfc6b5d/FLAGf35047b74 [2023-11-29 04:23:19,537 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adff5039-79f8-4f2b-9e1b-ff911bdc16e4/bin/uautomizer-verify-BQ2R08f2Ya/data/f0be765b5/94cc92321c15422fac1ca655cbfc6b5d [2023-11-29 04:23:19,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:23:19,541 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:23:19,543 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:23:19,543 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:23:19,548 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:23:19,549 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:23:19" (1/1) ... [2023-11-29 04:23:19,550 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@306f3565 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:23:19, skipping insertion in model container [2023-11-29 04:23:19,550 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:23:19" (1/1) ... [2023-11-29 04:23:19,600 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:23:19,742 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_adff5039-79f8-4f2b-9e1b-ff911bdc16e4/sv-benchmarks/c/pthread-wmm/rfi003_tso.i[944,957] [2023-11-29 04:23:19,945 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:23:19,957 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:23:19,969 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_adff5039-79f8-4f2b-9e1b-ff911bdc16e4/sv-benchmarks/c/pthread-wmm/rfi003_tso.i[944,957] [2023-11-29 04:23:20,022 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:23:20,054 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:23:20,055 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:23:20,062 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:23:20,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:23:20 WrapperNode [2023-11-29 04:23:20,063 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:23:20,064 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:23:20,064 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:23:20,064 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:23:20,072 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:23:20" (1/1) ... [2023-11-29 04:23:20,090 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:23:20" (1/1) ... [2023-11-29 04:23:20,138 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 170 [2023-11-29 04:23:20,138 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:23:20,139 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:23:20,139 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:23:20,139 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:23:20,151 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:23:20" (1/1) ... [2023-11-29 04:23:20,151 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:23:20" (1/1) ... [2023-11-29 04:23:20,155 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:23:20" (1/1) ... [2023-11-29 04:23:20,173 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-11-29 04:23:20,173 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:23:20" (1/1) ... [2023-11-29 04:23:20,174 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:23:20" (1/1) ... [2023-11-29 04:23:20,183 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:23:20" (1/1) ... [2023-11-29 04:23:20,185 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:23:20" (1/1) ... [2023-11-29 04:23:20,188 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:23:20" (1/1) ... [2023-11-29 04:23:20,190 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:23:20" (1/1) ... [2023-11-29 04:23:20,194 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:23:20,195 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:23:20,196 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:23:20,196 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:23:20,197 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:23:20" (1/1) ... [2023-11-29 04:23:20,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:23:20,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adff5039-79f8-4f2b-9e1b-ff911bdc16e4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:23:20,226 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adff5039-79f8-4f2b-9e1b-ff911bdc16e4/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:23:20,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adff5039-79f8-4f2b-9e1b-ff911bdc16e4/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:23:20,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 04:23:20,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 04:23:20,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 04:23:20,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 04:23:20,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:23:20,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 04:23:20,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:23:20,270 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-29 04:23:20,270 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-29 04:23:20,270 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-29 04:23:20,270 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-29 04:23:20,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:23:20,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 04:23:20,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 04:23:20,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 04:23:20,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:23:20,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:23:20,272 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 04:23:20,400 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:23:20,401 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:23:20,722 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:23:20,920 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:23:20,920 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 04:23:20,921 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:23:20 BoogieIcfgContainer [2023-11-29 04:23:20,921 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:23:20,923 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:23:20,923 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:23:20,926 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:23:20,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:23:19" (1/3) ... [2023-11-29 04:23:20,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@692a9ddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:23:20, skipping insertion in model container [2023-11-29 04:23:20,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:23:20" (2/3) ... [2023-11-29 04:23:20,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@692a9ddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:23:20, skipping insertion in model container [2023-11-29 04:23:20,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:23:20" (3/3) ... [2023-11-29 04:23:20,929 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi003_tso.i [2023-11-29 04:23:20,939 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 04:23:20,949 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:23:20,949 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 04:23:20,950 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 04:23:20,996 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 04:23:21,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 33 transitions, 74 flow [2023-11-29 04:23:21,057 INFO L124 PetriNetUnfolderBase]: 1/31 cut-off events. [2023-11-29 04:23:21,057 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 04:23:21,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 31 events. 1/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2023-11-29 04:23:21,060 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 33 transitions, 74 flow [2023-11-29 04:23:21,064 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 31 transitions, 68 flow [2023-11-29 04:23:21,074 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:23:21,081 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4ab57d7f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:23:21,081 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-29 04:23:21,088 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 04:23:21,088 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-11-29 04:23:21,088 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 04:23:21,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:23:21,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:23:21,089 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:23:21,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:23:21,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1935163090, now seen corresponding path program 1 times [2023-11-29 04:23:21,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:23:21,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690454024] [2023-11-29 04:23:21,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:23:21,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:23:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:23:21,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:23:21,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:23:21,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690454024] [2023-11-29 04:23:21,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690454024] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:23:21,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:23:21,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 04:23:21,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112660560] [2023-11-29 04:23:21,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:23:21,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:23:21,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:23:21,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:23:21,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:23:21,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 33 [2023-11-29 04:23:21,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:21,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:23:21,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 33 [2023-11-29 04:23:21,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:23:21,769 INFO L124 PetriNetUnfolderBase]: 249/482 cut-off events. [2023-11-29 04:23:21,769 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 04:23:21,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 922 conditions, 482 events. 249/482 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2417 event pairs, 24 based on Foata normal form. 24/495 useless extension candidates. Maximal degree in co-relation 912. Up to 366 conditions per place. [2023-11-29 04:23:21,775 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 23 selfloop transitions, 2 changer transitions 2/38 dead transitions. [2023-11-29 04:23:21,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 38 transitions, 136 flow [2023-11-29 04:23:21,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:23:21,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:23:21,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2023-11-29 04:23:21,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.696969696969697 [2023-11-29 04:23:21,786 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 69 transitions. [2023-11-29 04:23:21,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 69 transitions. [2023-11-29 04:23:21,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:23:21,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 69 transitions. [2023-11-29 04:23:21,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:21,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:21,794 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:21,795 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 68 flow. Second operand 3 states and 69 transitions. [2023-11-29 04:23:21,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 38 transitions, 136 flow [2023-11-29 04:23:21,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 38 transitions, 134 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:23:21,800 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 64 flow [2023-11-29 04:23:21,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2023-11-29 04:23:21,805 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2023-11-29 04:23:21,805 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 64 flow [2023-11-29 04:23:21,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:21,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:23:21,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:23:21,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 04:23:21,806 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:23:21,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:23:21,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1972624974, now seen corresponding path program 1 times [2023-11-29 04:23:21,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:23:21,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816642212] [2023-11-29 04:23:21,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:23:21,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:23:21,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:23:22,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:23:22,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:23:22,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816642212] [2023-11-29 04:23:22,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816642212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:23:22,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:23:22,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:23:22,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106017208] [2023-11-29 04:23:22,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:23:22,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:23:22,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:23:22,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:23:22,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:23:22,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2023-11-29 04:23:22,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 64 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:22,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:23:22,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2023-11-29 04:23:22,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:23:23,108 INFO L124 PetriNetUnfolderBase]: 485/901 cut-off events. [2023-11-29 04:23:23,108 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-11-29 04:23:23,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1783 conditions, 901 events. 485/901 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4677 event pairs, 137 based on Foata normal form. 0/876 useless extension candidates. Maximal degree in co-relation 1773. Up to 322 conditions per place. [2023-11-29 04:23:23,116 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 26 selfloop transitions, 2 changer transitions 43/78 dead transitions. [2023-11-29 04:23:23,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 78 transitions, 310 flow [2023-11-29 04:23:23,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 04:23:23,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 04:23:23,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2023-11-29 04:23:23,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5492424242424242 [2023-11-29 04:23:23,119 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 145 transitions. [2023-11-29 04:23:23,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 145 transitions. [2023-11-29 04:23:23,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:23:23,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 145 transitions. [2023-11-29 04:23:23,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:23,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:23,124 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:23,124 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 64 flow. Second operand 8 states and 145 transitions. [2023-11-29 04:23:23,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 78 transitions, 310 flow [2023-11-29 04:23:23,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 78 transitions, 302 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:23:23,128 INFO L231 Difference]: Finished difference. Result has 45 places, 27 transitions, 74 flow [2023-11-29 04:23:23,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=74, PETRI_PLACES=45, PETRI_TRANSITIONS=27} [2023-11-29 04:23:23,129 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 8 predicate places. [2023-11-29 04:23:23,129 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 27 transitions, 74 flow [2023-11-29 04:23:23,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:23,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:23:23,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:23:23,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 04:23:23,130 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:23:23,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:23:23,131 INFO L85 PathProgramCache]: Analyzing trace with hash 432873488, now seen corresponding path program 1 times [2023-11-29 04:23:23,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:23:23,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42784642] [2023-11-29 04:23:23,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:23:23,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:23:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:23:23,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:23:23,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:23:23,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42784642] [2023-11-29 04:23:23,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42784642] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:23:23,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:23:23,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 04:23:23,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592135873] [2023-11-29 04:23:23,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:23:23,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:23:23,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:23:23,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:23:23,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:23:23,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2023-11-29 04:23:23,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 27 transitions, 74 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:23,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:23:23,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2023-11-29 04:23:23,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:23:24,261 INFO L124 PetriNetUnfolderBase]: 277/551 cut-off events. [2023-11-29 04:23:24,262 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2023-11-29 04:23:24,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1210 conditions, 551 events. 277/551 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2694 event pairs, 143 based on Foata normal form. 15/565 useless extension candidates. Maximal degree in co-relation 1195. Up to 387 conditions per place. [2023-11-29 04:23:24,266 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 31 selfloop transitions, 8 changer transitions 19/66 dead transitions. [2023-11-29 04:23:24,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 66 transitions, 283 flow [2023-11-29 04:23:24,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:23:24,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 04:23:24,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2023-11-29 04:23:24,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5050505050505051 [2023-11-29 04:23:24,269 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 150 transitions. [2023-11-29 04:23:24,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 150 transitions. [2023-11-29 04:23:24,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:23:24,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 150 transitions. [2023-11-29 04:23:24,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:24,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:24,273 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:24,273 INFO L175 Difference]: Start difference. First operand has 45 places, 27 transitions, 74 flow. Second operand 9 states and 150 transitions. [2023-11-29 04:23:24,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 66 transitions, 283 flow [2023-11-29 04:23:24,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 66 transitions, 261 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-29 04:23:24,278 INFO L231 Difference]: Finished difference. Result has 48 places, 34 transitions, 123 flow [2023-11-29 04:23:24,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=123, PETRI_PLACES=48, PETRI_TRANSITIONS=34} [2023-11-29 04:23:24,280 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2023-11-29 04:23:24,280 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 34 transitions, 123 flow [2023-11-29 04:23:24,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:24,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:23:24,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:23:24,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 04:23:24,281 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:23:24,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:23:24,282 INFO L85 PathProgramCache]: Analyzing trace with hash 955123378, now seen corresponding path program 2 times [2023-11-29 04:23:24,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:23:24,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472780602] [2023-11-29 04:23:24,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:23:24,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:23:24,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:23:25,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:23:25,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:23:25,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472780602] [2023-11-29 04:23:25,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472780602] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:23:25,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:23:25,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 04:23:25,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553514515] [2023-11-29 04:23:25,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:23:25,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:23:25,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:23:25,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:23:25,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:23:25,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2023-11-29 04:23:25,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 34 transitions, 123 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:25,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:23:25,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2023-11-29 04:23:25,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:23:25,529 INFO L124 PetriNetUnfolderBase]: 262/518 cut-off events. [2023-11-29 04:23:25,529 INFO L125 PetriNetUnfolderBase]: For 229/232 co-relation queries the response was YES. [2023-11-29 04:23:25,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1304 conditions, 518 events. 262/518 cut-off events. For 229/232 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2469 event pairs, 137 based on Foata normal form. 17/534 useless extension candidates. Maximal degree in co-relation 1286. Up to 357 conditions per place. [2023-11-29 04:23:25,534 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 31 selfloop transitions, 12 changer transitions 19/70 dead transitions. [2023-11-29 04:23:25,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 70 transitions, 352 flow [2023-11-29 04:23:25,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:23:25,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 04:23:25,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2023-11-29 04:23:25,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5016835016835017 [2023-11-29 04:23:25,536 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 149 transitions. [2023-11-29 04:23:25,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 149 transitions. [2023-11-29 04:23:25,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:23:25,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 149 transitions. [2023-11-29 04:23:25,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 16.555555555555557) internal successors, (149), 9 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:25,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:25,540 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:25,540 INFO L175 Difference]: Start difference. First operand has 48 places, 34 transitions, 123 flow. Second operand 9 states and 149 transitions. [2023-11-29 04:23:25,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 70 transitions, 352 flow [2023-11-29 04:23:25,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 70 transitions, 336 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-11-29 04:23:25,545 INFO L231 Difference]: Finished difference. Result has 55 places, 38 transitions, 186 flow [2023-11-29 04:23:25,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=186, PETRI_PLACES=55, PETRI_TRANSITIONS=38} [2023-11-29 04:23:25,546 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 18 predicate places. [2023-11-29 04:23:25,546 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 38 transitions, 186 flow [2023-11-29 04:23:25,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:25,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:23:25,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:23:25,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 04:23:25,547 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:23:25,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:23:25,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1061557939, now seen corresponding path program 1 times [2023-11-29 04:23:25,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:23:25,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416710834] [2023-11-29 04:23:25,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:23:25,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:23:25,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:23:26,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:23:26,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:23:26,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416710834] [2023-11-29 04:23:26,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416710834] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:23:26,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:23:26,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:23:26,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223957027] [2023-11-29 04:23:26,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:23:26,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:23:26,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:23:26,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:23:26,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:23:26,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2023-11-29 04:23:26,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 38 transitions, 186 flow. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:26,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:23:26,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2023-11-29 04:23:26,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:23:26,592 INFO L124 PetriNetUnfolderBase]: 426/767 cut-off events. [2023-11-29 04:23:26,593 INFO L125 PetriNetUnfolderBase]: For 422/430 co-relation queries the response was YES. [2023-11-29 04:23:26,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2091 conditions, 767 events. 426/767 cut-off events. For 422/430 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3594 event pairs, 30 based on Foata normal form. 46/811 useless extension candidates. Maximal degree in co-relation 2068. Up to 457 conditions per place. [2023-11-29 04:23:26,599 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 44 selfloop transitions, 6 changer transitions 2/57 dead transitions. [2023-11-29 04:23:26,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 57 transitions, 335 flow [2023-11-29 04:23:26,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:23:26,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:23:26,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2023-11-29 04:23:26,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2023-11-29 04:23:26,601 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 85 transitions. [2023-11-29 04:23:26,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 85 transitions. [2023-11-29 04:23:26,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:23:26,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 85 transitions. [2023-11-29 04:23:26,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:26,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:26,603 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:26,603 INFO L175 Difference]: Start difference. First operand has 55 places, 38 transitions, 186 flow. Second operand 5 states and 85 transitions. [2023-11-29 04:23:26,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 57 transitions, 335 flow [2023-11-29 04:23:26,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 57 transitions, 275 flow, removed 10 selfloop flow, removed 12 redundant places. [2023-11-29 04:23:26,610 INFO L231 Difference]: Finished difference. Result has 46 places, 34 transitions, 140 flow [2023-11-29 04:23:26,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=140, PETRI_PLACES=46, PETRI_TRANSITIONS=34} [2023-11-29 04:23:26,611 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 9 predicate places. [2023-11-29 04:23:26,611 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 34 transitions, 140 flow [2023-11-29 04:23:26,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:26,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:23:26,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:23:26,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 04:23:26,612 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:23:26,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:23:26,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1736777427, now seen corresponding path program 2 times [2023-11-29 04:23:26,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:23:26,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630245483] [2023-11-29 04:23:26,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:23:26,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:23:26,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:23:26,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:23:26,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:23:26,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630245483] [2023-11-29 04:23:26,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630245483] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:23:26,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:23:26,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:23:26,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529311749] [2023-11-29 04:23:26,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:23:26,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:23:26,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:23:26,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:23:26,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:23:26,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2023-11-29 04:23:26,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 34 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:26,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:23:26,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2023-11-29 04:23:26,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:23:26,964 INFO L124 PetriNetUnfolderBase]: 258/518 cut-off events. [2023-11-29 04:23:26,964 INFO L125 PetriNetUnfolderBase]: For 406/416 co-relation queries the response was YES. [2023-11-29 04:23:26,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1373 conditions, 518 events. 258/518 cut-off events. For 406/416 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2261 event pairs, 64 based on Foata normal form. 39/550 useless extension candidates. Maximal degree in co-relation 1355. Up to 220 conditions per place. [2023-11-29 04:23:26,968 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 40 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2023-11-29 04:23:26,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 54 transitions, 285 flow [2023-11-29 04:23:26,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:23:26,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:23:26,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2023-11-29 04:23:26,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2023-11-29 04:23:26,970 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 84 transitions. [2023-11-29 04:23:26,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 84 transitions. [2023-11-29 04:23:26,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:23:26,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 84 transitions. [2023-11-29 04:23:26,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:26,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:26,971 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:26,971 INFO L175 Difference]: Start difference. First operand has 46 places, 34 transitions, 140 flow. Second operand 4 states and 84 transitions. [2023-11-29 04:23:26,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 54 transitions, 285 flow [2023-11-29 04:23:26,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 54 transitions, 265 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-29 04:23:26,975 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 153 flow [2023-11-29 04:23:26,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2023-11-29 04:23:26,976 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2023-11-29 04:23:26,976 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 153 flow [2023-11-29 04:23:26,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:26,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:23:26,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:23:26,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 04:23:26,977 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:23:26,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:23:26,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1340916788, now seen corresponding path program 1 times [2023-11-29 04:23:26,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:23:26,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017625553] [2023-11-29 04:23:26,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:23:26,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:23:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:23:27,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:23:27,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:23:27,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017625553] [2023-11-29 04:23:27,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017625553] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:23:27,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:23:27,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 04:23:27,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192816568] [2023-11-29 04:23:27,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:23:27,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:23:27,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:23:27,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:23:27,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:23:28,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2023-11-29 04:23:28,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 153 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:28,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:23:28,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2023-11-29 04:23:28,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:23:28,441 INFO L124 PetriNetUnfolderBase]: 321/682 cut-off events. [2023-11-29 04:23:28,442 INFO L125 PetriNetUnfolderBase]: For 460/470 co-relation queries the response was YES. [2023-11-29 04:23:28,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1790 conditions, 682 events. 321/682 cut-off events. For 460/470 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3615 event pairs, 60 based on Foata normal form. 13/668 useless extension candidates. Maximal degree in co-relation 1772. Up to 292 conditions per place. [2023-11-29 04:23:28,446 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 40 selfloop transitions, 20 changer transitions 11/83 dead transitions. [2023-11-29 04:23:28,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 83 transitions, 454 flow [2023-11-29 04:23:28,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:23:28,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 04:23:28,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2023-11-29 04:23:28,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5353535353535354 [2023-11-29 04:23:28,448 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 159 transitions. [2023-11-29 04:23:28,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 159 transitions. [2023-11-29 04:23:28,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:23:28,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 159 transitions. [2023-11-29 04:23:28,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:28,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:28,451 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:28,451 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 153 flow. Second operand 9 states and 159 transitions. [2023-11-29 04:23:28,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 83 transitions, 454 flow [2023-11-29 04:23:28,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 83 transitions, 452 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:23:28,456 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 291 flow [2023-11-29 04:23:28,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=291, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2023-11-29 04:23:28,457 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 23 predicate places. [2023-11-29 04:23:28,457 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 291 flow [2023-11-29 04:23:28,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:28,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:23:28,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:23:28,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 04:23:28,458 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:23:28,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:23:28,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1192647220, now seen corresponding path program 2 times [2023-11-29 04:23:28,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:23:28,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693723738] [2023-11-29 04:23:28,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:23:28,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:23:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:23:28,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:23:28,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:23:28,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693723738] [2023-11-29 04:23:28,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693723738] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:23:28,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:23:28,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:23:28,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967607621] [2023-11-29 04:23:28,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:23:28,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:23:28,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:23:28,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:23:28,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:23:28,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2023-11-29 04:23:28,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 291 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:28,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:23:28,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2023-11-29 04:23:28,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:23:28,791 INFO L124 PetriNetUnfolderBase]: 303/605 cut-off events. [2023-11-29 04:23:28,791 INFO L125 PetriNetUnfolderBase]: For 1189/1199 co-relation queries the response was YES. [2023-11-29 04:23:28,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2073 conditions, 605 events. 303/605 cut-off events. For 1189/1199 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2815 event pairs, 71 based on Foata normal form. 41/637 useless extension candidates. Maximal degree in co-relation 2048. Up to 257 conditions per place. [2023-11-29 04:23:28,795 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 39 selfloop transitions, 6 changer transitions 8/64 dead transitions. [2023-11-29 04:23:28,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 64 transitions, 445 flow [2023-11-29 04:23:28,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:23:28,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:23:28,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 90 transitions. [2023-11-29 04:23:28,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2023-11-29 04:23:28,797 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 90 transitions. [2023-11-29 04:23:28,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 90 transitions. [2023-11-29 04:23:28,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:23:28,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 90 transitions. [2023-11-29 04:23:28,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:28,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:28,799 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:28,799 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 291 flow. Second operand 5 states and 90 transitions. [2023-11-29 04:23:28,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 64 transitions, 445 flow [2023-11-29 04:23:28,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 64 transitions, 404 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-11-29 04:23:28,804 INFO L231 Difference]: Finished difference. Result has 58 places, 45 transitions, 231 flow [2023-11-29 04:23:28,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=231, PETRI_PLACES=58, PETRI_TRANSITIONS=45} [2023-11-29 04:23:28,805 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 21 predicate places. [2023-11-29 04:23:28,806 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 231 flow [2023-11-29 04:23:28,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:28,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:23:28,806 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] [2023-11-29 04:23:28,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 04:23:28,807 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:23:28,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:23:28,807 INFO L85 PathProgramCache]: Analyzing trace with hash 2106900524, now seen corresponding path program 1 times [2023-11-29 04:23:28,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:23:28,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687509659] [2023-11-29 04:23:28,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:23:28,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:23:28,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:23:30,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:23:30,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:23:30,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687509659] [2023-11-29 04:23:30,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687509659] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:23:30,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:23:30,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 04:23:30,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262939927] [2023-11-29 04:23:30,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:23:30,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 04:23:30,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:23:30,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 04:23:30,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:23:30,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2023-11-29 04:23:30,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 231 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:30,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:23:30,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2023-11-29 04:23:30,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:23:30,443 INFO L124 PetriNetUnfolderBase]: 215/490 cut-off events. [2023-11-29 04:23:30,443 INFO L125 PetriNetUnfolderBase]: For 812/843 co-relation queries the response was YES. [2023-11-29 04:23:30,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1533 conditions, 490 events. 215/490 cut-off events. For 812/843 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2479 event pairs, 54 based on Foata normal form. 9/463 useless extension candidates. Maximal degree in co-relation 1510. Up to 144 conditions per place. [2023-11-29 04:23:30,447 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 27 selfloop transitions, 16 changer transitions 18/72 dead transitions. [2023-11-29 04:23:30,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 72 transitions, 453 flow [2023-11-29 04:23:30,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:23:30,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:23:30,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2023-11-29 04:23:30,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2023-11-29 04:23:30,449 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 160 transitions. [2023-11-29 04:23:30,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 160 transitions. [2023-11-29 04:23:30,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:23:30,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 160 transitions. [2023-11-29 04:23:30,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 16.0) internal successors, (160), 10 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:30,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 33.0) internal successors, (363), 11 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:30,452 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 33.0) internal successors, (363), 11 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:30,452 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 231 flow. Second operand 10 states and 160 transitions. [2023-11-29 04:23:30,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 72 transitions, 453 flow [2023-11-29 04:23:30,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 72 transitions, 415 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-11-29 04:23:30,457 INFO L231 Difference]: Finished difference. Result has 65 places, 44 transitions, 245 flow [2023-11-29 04:23:30,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=245, PETRI_PLACES=65, PETRI_TRANSITIONS=44} [2023-11-29 04:23:30,458 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 28 predicate places. [2023-11-29 04:23:30,459 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 44 transitions, 245 flow [2023-11-29 04:23:30,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:30,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:23:30,459 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] [2023-11-29 04:23:30,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 04:23:30,460 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:23:30,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:23:30,460 INFO L85 PathProgramCache]: Analyzing trace with hash 59949676, now seen corresponding path program 2 times [2023-11-29 04:23:30,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:23:30,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082185496] [2023-11-29 04:23:30,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:23:30,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:23:30,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:23:30,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:23:30,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:23:30,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082185496] [2023-11-29 04:23:30,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082185496] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:23:30,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:23:30,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:23:30,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23205083] [2023-11-29 04:23:30,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:23:30,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:23:30,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:23:30,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:23:30,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:23:30,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2023-11-29 04:23:30,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 44 transitions, 245 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:30,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:23:30,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2023-11-29 04:23:30,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:23:30,923 INFO L124 PetriNetUnfolderBase]: 305/684 cut-off events. [2023-11-29 04:23:30,923 INFO L125 PetriNetUnfolderBase]: For 620/646 co-relation queries the response was YES. [2023-11-29 04:23:30,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2109 conditions, 684 events. 305/684 cut-off events. For 620/646 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3816 event pairs, 91 based on Foata normal form. 11/635 useless extension candidates. Maximal degree in co-relation 2085. Up to 302 conditions per place. [2023-11-29 04:23:30,926 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 23 selfloop transitions, 1 changer transitions 36/70 dead transitions. [2023-11-29 04:23:30,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 70 transitions, 493 flow [2023-11-29 04:23:30,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:23:30,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:23:30,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions. [2023-11-29 04:23:30,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797979797979798 [2023-11-29 04:23:30,928 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 95 transitions. [2023-11-29 04:23:30,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 95 transitions. [2023-11-29 04:23:30,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:23:30,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 95 transitions. [2023-11-29 04:23:30,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:30,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:30,929 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:30,929 INFO L175 Difference]: Start difference. First operand has 65 places, 44 transitions, 245 flow. Second operand 6 states and 95 transitions. [2023-11-29 04:23:30,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 70 transitions, 493 flow [2023-11-29 04:23:30,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 70 transitions, 438 flow, removed 7 selfloop flow, removed 9 redundant places. [2023-11-29 04:23:30,933 INFO L231 Difference]: Finished difference. Result has 63 places, 33 transitions, 152 flow [2023-11-29 04:23:30,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=152, PETRI_PLACES=63, PETRI_TRANSITIONS=33} [2023-11-29 04:23:30,934 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 26 predicate places. [2023-11-29 04:23:30,935 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 33 transitions, 152 flow [2023-11-29 04:23:30,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:30,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:23:30,935 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] [2023-11-29 04:23:30,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 04:23:30,936 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:23:30,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:23:30,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1013281586, now seen corresponding path program 3 times [2023-11-29 04:23:30,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:23:30,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657965237] [2023-11-29 04:23:30,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:23:30,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:23:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:23:32,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:23:32,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:23:32,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657965237] [2023-11-29 04:23:32,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657965237] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:23:32,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:23:32,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 04:23:32,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87456599] [2023-11-29 04:23:32,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:23:32,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 04:23:32,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:23:32,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 04:23:32,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:23:32,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2023-11-29 04:23:32,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 33 transitions, 152 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:32,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:23:32,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2023-11-29 04:23:32,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:23:32,757 INFO L124 PetriNetUnfolderBase]: 61/165 cut-off events. [2023-11-29 04:23:32,758 INFO L125 PetriNetUnfolderBase]: For 103/111 co-relation queries the response was YES. [2023-11-29 04:23:32,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 165 events. 61/165 cut-off events. For 103/111 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 541 event pairs, 10 based on Foata normal form. 7/161 useless extension candidates. Maximal degree in co-relation 468. Up to 57 conditions per place. [2023-11-29 04:23:32,758 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 0 selfloop transitions, 0 changer transitions 41/41 dead transitions. [2023-11-29 04:23:32,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 41 transitions, 230 flow [2023-11-29 04:23:32,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 04:23:32,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 04:23:32,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2023-11-29 04:23:32,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4128787878787879 [2023-11-29 04:23:32,760 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 109 transitions. [2023-11-29 04:23:32,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 109 transitions. [2023-11-29 04:23:32,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:23:32,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 109 transitions. [2023-11-29 04:23:32,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:32,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:32,762 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:32,762 INFO L175 Difference]: Start difference. First operand has 63 places, 33 transitions, 152 flow. Second operand 8 states and 109 transitions. [2023-11-29 04:23:32,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 41 transitions, 230 flow [2023-11-29 04:23:32,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 41 transitions, 207 flow, removed 9 selfloop flow, removed 8 redundant places. [2023-11-29 04:23:32,764 INFO L231 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2023-11-29 04:23:32,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0} [2023-11-29 04:23:32,764 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 16 predicate places. [2023-11-29 04:23:32,765 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow [2023-11-29 04:23:32,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:32,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-11-29 04:23:32,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-29 04:23:32,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-29 04:23:32,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-11-29 04:23:32,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-11-29 04:23:32,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 04:23:32,769 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 1, 1] [2023-11-29 04:23:32,774 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 04:23:32,774 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 04:23:32,778 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 04:23:32 BasicIcfg [2023-11-29 04:23:32,778 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 04:23:32,778 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 04:23:32,778 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 04:23:32,779 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 04:23:32,779 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:23:20" (3/4) ... [2023-11-29 04:23:32,780 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 04:23:32,782 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-29 04:23:32,782 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-29 04:23:32,788 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 77 nodes and edges [2023-11-29 04:23:32,788 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-29 04:23:32,789 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-29 04:23:32,789 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-29 04:23:32,865 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adff5039-79f8-4f2b-9e1b-ff911bdc16e4/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 04:23:32,865 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adff5039-79f8-4f2b-9e1b-ff911bdc16e4/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 04:23:32,866 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 04:23:32,866 INFO L158 Benchmark]: Toolchain (without parser) took 13325.42ms. Allocated memory was 148.9MB in the beginning and 377.5MB in the end (delta: 228.6MB). Free memory was 106.6MB in the beginning and 155.8MB in the end (delta: -49.2MB). Peak memory consumption was 180.2MB. Max. memory is 16.1GB. [2023-11-29 04:23:32,867 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 107.0MB. Free memory was 56.7MB in the beginning and 56.6MB in the end (delta: 134.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:23:32,867 INFO L158 Benchmark]: CACSL2BoogieTranslator took 520.88ms. Allocated memory is still 148.9MB. Free memory was 106.2MB in the beginning and 80.3MB in the end (delta: 25.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-29 04:23:32,868 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.08ms. Allocated memory is still 148.9MB. Free memory was 80.3MB in the beginning and 121.2MB in the end (delta: -40.9MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2023-11-29 04:23:32,868 INFO L158 Benchmark]: Boogie Preprocessor took 55.85ms. Allocated memory is still 148.9MB. Free memory was 121.2MB in the beginning and 117.1MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 04:23:32,869 INFO L158 Benchmark]: RCFGBuilder took 725.60ms. Allocated memory is still 148.9MB. Free memory was 117.1MB in the beginning and 110.1MB in the end (delta: 7.1MB). Peak memory consumption was 55.7MB. Max. memory is 16.1GB. [2023-11-29 04:23:32,869 INFO L158 Benchmark]: TraceAbstraction took 11854.89ms. Allocated memory was 148.9MB in the beginning and 377.5MB in the end (delta: 228.6MB). Free memory was 109.2MB in the beginning and 161.0MB in the end (delta: -51.8MB). Peak memory consumption was 177.5MB. Max. memory is 16.1GB. [2023-11-29 04:23:32,869 INFO L158 Benchmark]: Witness Printer took 87.48ms. Allocated memory is still 377.5MB. Free memory was 161.0MB in the beginning and 155.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 04:23:32,871 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 107.0MB. Free memory was 56.7MB in the beginning and 56.6MB in the end (delta: 134.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 520.88ms. Allocated memory is still 148.9MB. Free memory was 106.2MB in the beginning and 80.3MB in the end (delta: 25.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.08ms. Allocated memory is still 148.9MB. Free memory was 80.3MB in the beginning and 121.2MB in the end (delta: -40.9MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.85ms. Allocated memory is still 148.9MB. Free memory was 121.2MB in the beginning and 117.1MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 725.60ms. Allocated memory is still 148.9MB. Free memory was 117.1MB in the beginning and 110.1MB in the end (delta: 7.1MB). Peak memory consumption was 55.7MB. Max. memory is 16.1GB. * TraceAbstraction took 11854.89ms. Allocated memory was 148.9MB in the beginning and 377.5MB in the end (delta: 228.6MB). Free memory was 109.2MB in the beginning and 161.0MB in the end (delta: -51.8MB). Peak memory consumption was 177.5MB. Max. memory is 16.1GB. * Witness Printer took 87.48ms. Allocated memory is still 377.5MB. Free memory was 161.0MB in the beginning and 155.8MB 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: - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 53 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 11.7s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 373 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 366 mSDsluCounter, 194 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 162 mSDsCounter, 74 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1467 IncrementalHoareTripleChecker+Invalid, 1541 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 74 mSolverCounterUnsat, 32 mSDtfsCounter, 1467 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=291occurred in iteration=7, InterpolantAutomatonStates: 76, 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: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 208 NumberOfCodeBlocks, 208 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 197 ConstructedInterpolants, 0 QuantifiedInterpolants, 2104 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 04:23:32,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adff5039-79f8-4f2b-9e1b-ff911bdc16e4/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE