./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC --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 74892b4fb04a6fe0e809c110df08d9da57c5c90ea65da5b04a32432686fc90f8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:13:56,862 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:13:56,983 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 01:13:56,996 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:13:56,996 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:13:57,045 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:13:57,045 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:13:57,046 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:13:57,046 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:13:57,046 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:13:57,046 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:13:57,046 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:13:57,047 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:13:57,047 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:13:57,047 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:13:57,047 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:13:57,049 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:13:57,049 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:13:57,050 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:13:57,050 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:13:57,050 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:13:57,050 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:13:57,051 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:13:57,051 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:13:57,051 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:13:57,052 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:13:57,052 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:13:57,052 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:13:57,052 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:13:57,052 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:13:57,052 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:13:57,053 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:13:57,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:13:57,054 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:13:57,054 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:13:57,054 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:13:57,054 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:13:57,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:13:57,055 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:13:57,055 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:13:57,055 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:13:57,055 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:13:57,055 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:13:57,055 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:13:57,056 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:13:57,056 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:13:57,056 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:13:57,056 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:13:57,056 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC 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 -> 74892b4fb04a6fe0e809c110df08d9da57c5c90ea65da5b04a32432686fc90f8 [2024-11-24 01:13:57,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:13:57,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:13:57,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:13:57,467 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:13:57,468 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:13:57,471 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-11-24 01:14:01,120 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC/data/b4000ec8a/7111a1a5d61a41179ebe0486e57dc44f/FLAG4c2df4a90 [2024-11-24 01:14:01,481 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:14:01,487 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-11-24 01:14:01,511 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC/data/b4000ec8a/7111a1a5d61a41179ebe0486e57dc44f/FLAG4c2df4a90 [2024-11-24 01:14:01,719 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC/data/b4000ec8a/7111a1a5d61a41179ebe0486e57dc44f [2024-11-24 01:14:01,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:14:01,724 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:14:01,726 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:14:01,726 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:14:01,732 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:14:01,733 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:14:01" (1/1) ... [2024-11-24 01:14:01,734 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8fe8ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:14:01, skipping insertion in model container [2024-11-24 01:14:01,734 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:14:01" (1/1) ... [2024-11-24 01:14:01,755 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:14:01,984 WARN L250 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_38bed445-7450-4ef5-8bd1-24e1c6857c26/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c[2247,2260] [2024-11-24 01:14:01,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:14:02,010 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:14:02,034 WARN L250 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_38bed445-7450-4ef5-8bd1-24e1c6857c26/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c[2247,2260] [2024-11-24 01:14:02,035 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:14:02,054 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:14:02,055 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:14:02 WrapperNode [2024-11-24 01:14:02,055 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:14:02,056 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:14:02,057 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:14:02,057 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:14:02,065 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:14:02" (1/1) ... [2024-11-24 01:14:02,074 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:14:02" (1/1) ... [2024-11-24 01:14:02,104 INFO L138 Inliner]: procedures = 20, calls = 13, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 97 [2024-11-24 01:14:02,106 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:14:02,106 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:14:02,107 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:14:02,107 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:14:02,120 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:14:02" (1/1) ... [2024-11-24 01:14:02,120 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:14:02" (1/1) ... [2024-11-24 01:14:02,123 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:14:02" (1/1) ... [2024-11-24 01:14:02,150 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-24 01:14:02,151 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:14:02" (1/1) ... [2024-11-24 01:14:02,151 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:14:02" (1/1) ... [2024-11-24 01:14:02,161 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:14:02" (1/1) ... [2024-11-24 01:14:02,166 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:14:02" (1/1) ... [2024-11-24 01:14:02,174 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:14:02" (1/1) ... [2024-11-24 01:14:02,176 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:14:02" (1/1) ... [2024-11-24 01:14:02,177 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:14:02" (1/1) ... [2024-11-24 01:14:02,183 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:14:02,184 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:14:02,185 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:14:02,188 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:14:02,189 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:14:02" (1/1) ... [2024-11-24 01:14:02,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:14:02,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:14:02,235 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:14:02,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:14:02,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:14:02,279 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-24 01:14:02,279 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-24 01:14:02,279 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-24 01:14:02,280 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-24 01:14:02,280 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-24 01:14:02,280 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-24 01:14:02,280 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-24 01:14:02,280 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-24 01:14:02,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:14:02,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:14:02,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:14:02,283 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-24 01:14:02,436 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:14:02,438 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:14:02,744 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-24 01:14:02,745 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:14:02,912 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:14:02,912 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-24 01:14:02,912 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:14:02 BoogieIcfgContainer [2024-11-24 01:14:02,913 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:14:02,915 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:14:02,916 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:14:02,922 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:14:02,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:14:01" (1/3) ... [2024-11-24 01:14:02,923 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40c9e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:14:02, skipping insertion in model container [2024-11-24 01:14:02,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:14:02" (2/3) ... [2024-11-24 01:14:02,923 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40c9e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:14:02, skipping insertion in model container [2024-11-24 01:14:02,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:14:02" (3/3) ... [2024-11-24 01:14:02,924 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-difference-det.wvr.c [2024-11-24 01:14:02,944 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:14:02,946 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-difference-det.wvr.c that has 5 procedures, 37 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-24 01:14:02,946 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-24 01:14:03,048 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-24 01:14:03,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 40 transitions, 108 flow [2024-11-24 01:14:03,144 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2024-11-24 01:14:03,147 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-24 01:14:03,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 36 events. 4/36 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-24 01:14:03,152 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 40 transitions, 108 flow [2024-11-24 01:14:03,157 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 35 transitions, 94 flow [2024-11-24 01:14:03,168 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:14:03,183 INFO L333 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, 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;@6614fdc6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:14:03,183 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-24 01:14:03,210 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-24 01:14:03,210 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-11-24 01:14:03,210 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-24 01:14:03,211 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:14:03,212 INFO L206 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] [2024-11-24 01:14:03,212 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-24 01:14:03,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:14:03,223 INFO L85 PathProgramCache]: Analyzing trace with hash -404565410, now seen corresponding path program 1 times [2024-11-24 01:14:03,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:14:03,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493528854] [2024-11-24 01:14:03,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:14:03,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:14:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:14:03,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:14:03,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:14:03,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493528854] [2024-11-24 01:14:03,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493528854] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:14:03,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:14:03,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:14:03,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975108973] [2024-11-24 01:14:03,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:14:03,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:14:03,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:14:03,830 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:14:03,830 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:14:03,832 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-24 01:14:03,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:14:03,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:14:03,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-24 01:14:03,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:14:05,009 INFO L124 PetriNetUnfolderBase]: 4206/5690 cut-off events. [2024-11-24 01:14:05,011 INFO L125 PetriNetUnfolderBase]: For 455/455 co-relation queries the response was YES. [2024-11-24 01:14:05,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11678 conditions, 5690 events. 4206/5690 cut-off events. For 455/455 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 24119 event pairs, 1080 based on Foata normal form. 1/5300 useless extension candidates. Maximal degree in co-relation 10315. Up to 4714 conditions per place. [2024-11-24 01:14:05,079 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 48 selfloop transitions, 3 changer transitions 2/56 dead transitions. [2024-11-24 01:14:05,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 263 flow [2024-11-24 01:14:05,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:14:05,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 01:14:05,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-11-24 01:14:05,102 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6416666666666667 [2024-11-24 01:14:05,105 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 94 flow. Second operand 3 states and 77 transitions. [2024-11-24 01:14:05,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 263 flow [2024-11-24 01:14:05,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 56 transitions, 233 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-24 01:14:05,136 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 101 flow [2024-11-24 01:14:05,140 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2024-11-24 01:14:05,145 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, -5 predicate places. [2024-11-24 01:14:05,145 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 101 flow [2024-11-24 01:14:05,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:14:05,146 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:14:05,146 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:14:05,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 01:14:05,150 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-24 01:14:05,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:14:05,151 INFO L85 PathProgramCache]: Analyzing trace with hash 991363082, now seen corresponding path program 1 times [2024-11-24 01:14:05,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:14:05,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120623924] [2024-11-24 01:14:05,152 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:14:05,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:14:05,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:14:05,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:14:05,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:14:05,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120623924] [2024-11-24 01:14:05,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120623924] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:14:05,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:14:05,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:14:05,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270539588] [2024-11-24 01:14:05,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:14:05,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:14:05,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:14:05,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:14:05,434 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:14:05,440 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-24 01:14:05,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:14:05,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:14:05,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-24 01:14:05,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:14:07,031 INFO L124 PetriNetUnfolderBase]: 8890/11757 cut-off events. [2024-11-24 01:14:07,031 INFO L125 PetriNetUnfolderBase]: For 1495/1520 co-relation queries the response was YES. [2024-11-24 01:14:07,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26035 conditions, 11757 events. 8890/11757 cut-off events. For 1495/1520 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 55479 event pairs, 2934 based on Foata normal form. 0/11130 useless extension candidates. Maximal degree in co-relation 3736. Up to 6812 conditions per place. [2024-11-24 01:14:07,120 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 89 selfloop transitions, 9 changer transitions 1/101 dead transitions. [2024-11-24 01:14:07,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 101 transitions, 464 flow [2024-11-24 01:14:07,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:14:07,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-24 01:14:07,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-11-24 01:14:07,123 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-24 01:14:07,124 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 101 flow. Second operand 5 states and 125 transitions. [2024-11-24 01:14:07,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 101 transitions, 464 flow [2024-11-24 01:14:07,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 101 transitions, 457 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 01:14:07,129 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 156 flow [2024-11-24 01:14:07,132 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=156, PETRI_PLACES=45, PETRI_TRANSITIONS=45} [2024-11-24 01:14:07,133 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2024-11-24 01:14:07,133 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 156 flow [2024-11-24 01:14:07,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:14:07,134 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:14:07,134 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:14:07,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:14:07,135 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-24 01:14:07,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:14:07,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1785009648, now seen corresponding path program 2 times [2024-11-24 01:14:07,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:14:07,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351212845] [2024-11-24 01:14:07,137 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:14:07,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:14:07,179 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:14:07,180 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:14:07,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:14:07,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:14:07,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351212845] [2024-11-24 01:14:07,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351212845] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:14:07,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458740422] [2024-11-24 01:14:07,339 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:14:07,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:14:07,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:14:07,344 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:14:07,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:14:07,479 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:14:07,480 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:14:07,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:14:07,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:14:07,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:14:07,610 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:14:07,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:14:07,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458740422] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:14:07,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:14:07,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-24 01:14:07,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566899119] [2024-11-24 01:14:07,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:14:07,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 01:14:07,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:14:07,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 01:14:07,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:14:07,732 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2024-11-24 01:14:07,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 156 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:14:07,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:14:07,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2024-11-24 01:14:07,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:14:10,878 INFO L124 PetriNetUnfolderBase]: 15902/20779 cut-off events. [2024-11-24 01:14:10,878 INFO L125 PetriNetUnfolderBase]: For 6679/6679 co-relation queries the response was YES. [2024-11-24 01:14:10,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53356 conditions, 20779 events. 15902/20779 cut-off events. For 6679/6679 co-relation queries the response was YES. Maximal size of possible extension queue 705. Compared 100595 event pairs, 1195 based on Foata normal form. 354/21133 useless extension candidates. Maximal degree in co-relation 27004. Up to 3779 conditions per place. [2024-11-24 01:14:11,005 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 245 selfloop transitions, 35 changer transitions 1/282 dead transitions. [2024-11-24 01:14:11,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 282 transitions, 1380 flow [2024-11-24 01:14:11,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 01:14:11,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-24 01:14:11,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 338 transitions. [2024-11-24 01:14:11,013 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6035714285714285 [2024-11-24 01:14:11,013 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 156 flow. Second operand 14 states and 338 transitions. [2024-11-24 01:14:11,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 282 transitions, 1380 flow [2024-11-24 01:14:11,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 282 transitions, 1380 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-24 01:14:11,036 INFO L231 Difference]: Finished difference. Result has 64 places, 73 transitions, 389 flow [2024-11-24 01:14:11,037 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=389, PETRI_PLACES=64, PETRI_TRANSITIONS=73} [2024-11-24 01:14:11,039 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 20 predicate places. [2024-11-24 01:14:11,039 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 73 transitions, 389 flow [2024-11-24 01:14:11,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:14:11,040 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:14:11,040 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:14:11,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 01:14:11,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-24 01:14:11,241 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-24 01:14:11,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:14:11,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1614519468, now seen corresponding path program 3 times [2024-11-24 01:14:11,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:14:11,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075135625] [2024-11-24 01:14:11,243 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:14:11,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:14:11,279 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-24 01:14:11,279 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:14:11,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:14:11,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:14:11,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075135625] [2024-11-24 01:14:11,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075135625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:14:11,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:14:11,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:14:11,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799403170] [2024-11-24 01:14:11,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:14:11,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:14:11,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:14:11,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:14:11,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:14:11,443 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-24 01:14:11,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 73 transitions, 389 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:14:11,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:14:11,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-24 01:14:11,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:14:14,131 INFO L124 PetriNetUnfolderBase]: 19677/26113 cut-off events. [2024-11-24 01:14:14,131 INFO L125 PetriNetUnfolderBase]: For 36116/36187 co-relation queries the response was YES. [2024-11-24 01:14:14,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79954 conditions, 26113 events. 19677/26113 cut-off events. For 36116/36187 co-relation queries the response was YES. Maximal size of possible extension queue 944. Compared 134087 event pairs, 7064 based on Foata normal form. 77/26098 useless extension candidates. Maximal degree in co-relation 61847. Up to 13128 conditions per place. [2024-11-24 01:14:14,379 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 108 selfloop transitions, 17 changer transitions 10/144 dead transitions. [2024-11-24 01:14:14,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 144 transitions, 963 flow [2024-11-24 01:14:14,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:14:14,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-24 01:14:14,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-11-24 01:14:14,381 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.59 [2024-11-24 01:14:14,381 INFO L175 Difference]: Start difference. First operand has 64 places, 73 transitions, 389 flow. Second operand 5 states and 118 transitions. [2024-11-24 01:14:14,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 144 transitions, 963 flow [2024-11-24 01:14:14,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 144 transitions, 916 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-11-24 01:14:14,962 INFO L231 Difference]: Finished difference. Result has 70 places, 79 transitions, 466 flow [2024-11-24 01:14:14,962 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=466, PETRI_PLACES=70, PETRI_TRANSITIONS=79} [2024-11-24 01:14:14,963 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 26 predicate places. [2024-11-24 01:14:14,964 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 79 transitions, 466 flow [2024-11-24 01:14:14,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:14:14,964 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:14:14,964 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:14:14,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 01:14:14,965 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-24 01:14:14,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:14:14,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1001958362, now seen corresponding path program 1 times [2024-11-24 01:14:14,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:14:14,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290798165] [2024-11-24 01:14:14,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:14:14,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:14:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:14:15,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:14:15,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:14:15,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290798165] [2024-11-24 01:14:15,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290798165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:14:15,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:14:15,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:14:15,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95345471] [2024-11-24 01:14:15,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:14:15,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:14:15,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:14:15,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:14:15,211 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:14:15,219 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-24 01:14:15,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 79 transitions, 466 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:14:15,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:14:15,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-24 01:14:15,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:14:17,109 INFO L124 PetriNetUnfolderBase]: 18297/24105 cut-off events. [2024-11-24 01:14:17,109 INFO L125 PetriNetUnfolderBase]: For 35529/35625 co-relation queries the response was YES. [2024-11-24 01:14:17,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74977 conditions, 24105 events. 18297/24105 cut-off events. For 35529/35625 co-relation queries the response was YES. Maximal size of possible extension queue 870. Compared 121461 event pairs, 5968 based on Foata normal form. 36/24138 useless extension candidates. Maximal degree in co-relation 68459. Up to 13326 conditions per place. [2024-11-24 01:14:17,250 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 109 selfloop transitions, 12 changer transitions 16/141 dead transitions. [2024-11-24 01:14:17,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 141 transitions, 959 flow [2024-11-24 01:14:17,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:14:17,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-24 01:14:17,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-11-24 01:14:17,252 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.63 [2024-11-24 01:14:17,252 INFO L175 Difference]: Start difference. First operand has 70 places, 79 transitions, 466 flow. Second operand 5 states and 126 transitions. [2024-11-24 01:14:17,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 141 transitions, 959 flow [2024-11-24 01:14:17,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 141 transitions, 916 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-11-24 01:14:17,601 INFO L231 Difference]: Finished difference. Result has 73 places, 79 transitions, 471 flow [2024-11-24 01:14:17,602 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=471, PETRI_PLACES=73, PETRI_TRANSITIONS=79} [2024-11-24 01:14:17,603 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 29 predicate places. [2024-11-24 01:14:17,603 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 79 transitions, 471 flow [2024-11-24 01:14:17,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:14:17,603 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:14:17,603 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:14:17,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:14:17,604 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-24 01:14:17,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:14:17,605 INFO L85 PathProgramCache]: Analyzing trace with hash 149959816, now seen corresponding path program 2 times [2024-11-24 01:14:17,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:14:17,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484292641] [2024-11-24 01:14:17,605 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:14:17,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:14:17,621 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 01:14:17,621 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:14:17,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:14:17,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:14:17,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484292641] [2024-11-24 01:14:17,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484292641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:14:17,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:14:17,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:14:17,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949550812] [2024-11-24 01:14:17,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:14:17,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:14:17,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:14:17,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:14:17,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:14:17,873 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-24 01:14:17,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 79 transitions, 471 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:14:17,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:14:17,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-24 01:14:17,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:14:20,358 INFO L124 PetriNetUnfolderBase]: 21054/27824 cut-off events. [2024-11-24 01:14:20,358 INFO L125 PetriNetUnfolderBase]: For 42224/42224 co-relation queries the response was YES. [2024-11-24 01:14:20,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85479 conditions, 27824 events. 21054/27824 cut-off events. For 42224/42224 co-relation queries the response was YES. Maximal size of possible extension queue 978. Compared 143153 event pairs, 2376 based on Foata normal form. 324/28143 useless extension candidates. Maximal degree in co-relation 74472. Up to 10234 conditions per place. [2024-11-24 01:14:20,485 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 159 selfloop transitions, 33 changer transitions 1/197 dead transitions. [2024-11-24 01:14:20,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 197 transitions, 1323 flow [2024-11-24 01:14:20,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:14:20,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-24 01:14:20,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-11-24 01:14:20,486 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6321428571428571 [2024-11-24 01:14:20,486 INFO L175 Difference]: Start difference. First operand has 73 places, 79 transitions, 471 flow. Second operand 7 states and 177 transitions. [2024-11-24 01:14:20,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 197 transitions, 1323 flow [2024-11-24 01:14:20,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 197 transitions, 1274 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-24 01:14:20,823 INFO L231 Difference]: Finished difference. Result has 79 places, 91 transitions, 653 flow [2024-11-24 01:14:20,823 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=653, PETRI_PLACES=79, PETRI_TRANSITIONS=91} [2024-11-24 01:14:20,824 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 35 predicate places. [2024-11-24 01:14:20,824 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 91 transitions, 653 flow [2024-11-24 01:14:20,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:14:20,824 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:14:20,825 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:14:20,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 01:14:20,825 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-24 01:14:20,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:14:20,825 INFO L85 PathProgramCache]: Analyzing trace with hash 129131734, now seen corresponding path program 4 times [2024-11-24 01:14:20,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:14:20,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051292612] [2024-11-24 01:14:20,826 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 01:14:20,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:14:20,841 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 01:14:20,841 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:14:20,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:14:20,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:14:20,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051292612] [2024-11-24 01:14:20,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051292612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:14:20,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:14:20,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:14:20,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963414309] [2024-11-24 01:14:20,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:14:20,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:14:20,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:14:20,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:14:20,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:14:20,910 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2024-11-24 01:14:20,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 91 transitions, 653 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:14:20,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:14:20,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2024-11-24 01:14:20,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:14:24,305 INFO L124 PetriNetUnfolderBase]: 27494/35793 cut-off events. [2024-11-24 01:14:24,306 INFO L125 PetriNetUnfolderBase]: For 78042/78042 co-relation queries the response was YES. [2024-11-24 01:14:24,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116336 conditions, 35793 events. 27494/35793 cut-off events. For 78042/78042 co-relation queries the response was YES. Maximal size of possible extension queue 1148. Compared 179044 event pairs, 3997 based on Foata normal form. 354/36147 useless extension candidates. Maximal degree in co-relation 110940. Up to 9539 conditions per place. [2024-11-24 01:14:24,484 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 139 selfloop transitions, 51 changer transitions 1/192 dead transitions. [2024-11-24 01:14:24,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 192 transitions, 1389 flow [2024-11-24 01:14:24,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:14:24,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-24 01:14:24,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-11-24 01:14:24,485 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5928571428571429 [2024-11-24 01:14:24,486 INFO L175 Difference]: Start difference. First operand has 79 places, 91 transitions, 653 flow. Second operand 7 states and 166 transitions. [2024-11-24 01:14:24,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 192 transitions, 1389 flow [2024-11-24 01:14:24,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 192 transitions, 1346 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-11-24 01:14:24,880 INFO L231 Difference]: Finished difference. Result has 88 places, 101 transitions, 889 flow [2024-11-24 01:14:24,880 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=889, PETRI_PLACES=88, PETRI_TRANSITIONS=101} [2024-11-24 01:14:24,881 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 44 predicate places. [2024-11-24 01:14:24,881 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 101 transitions, 889 flow [2024-11-24 01:14:24,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:14:24,881 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:14:24,881 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:14:24,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 01:14:24,881 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-24 01:14:24,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:14:24,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1680767130, now seen corresponding path program 5 times [2024-11-24 01:14:24,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:14:24,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959106469] [2024-11-24 01:14:24,882 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 01:14:24,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:14:24,898 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:14:24,898 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:14:24,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:14:24,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:14:24,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959106469] [2024-11-24 01:14:24,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959106469] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:14:24,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732302081] [2024-11-24 01:14:24,979 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 01:14:24,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:14:24,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:14:24,982 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:14:24,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:14:25,083 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:14:25,084 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:14:25,086 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:14:25,088 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:14:25,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:14:25,153 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:14:25,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:14:25,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732302081] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:14:25,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:14:25,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-24 01:14:25,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409725249] [2024-11-24 01:14:25,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:14:25,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 01:14:25,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:14:25,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 01:14:25,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:14:25,205 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2024-11-24 01:14:25,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 101 transitions, 889 flow. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 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) [2024-11-24 01:14:25,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:14:25,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2024-11-24 01:14:25,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:14:28,728 INFO L124 PetriNetUnfolderBase]: 27097/35372 cut-off events. [2024-11-24 01:14:28,728 INFO L125 PetriNetUnfolderBase]: For 107830/107830 co-relation queries the response was YES. [2024-11-24 01:14:28,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123875 conditions, 35372 events. 27097/35372 cut-off events. For 107830/107830 co-relation queries the response was YES. Maximal size of possible extension queue 1127. Compared 176060 event pairs, 6753 based on Foata normal form. 354/35726 useless extension candidates. Maximal degree in co-relation 112793. Up to 11513 conditions per place. [2024-11-24 01:14:29,157 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 148 selfloop transitions, 47 changer transitions 1/197 dead transitions. [2024-11-24 01:14:29,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 197 transitions, 1668 flow [2024-11-24 01:14:29,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:14:29,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-24 01:14:29,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-11-24 01:14:29,158 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5964285714285714 [2024-11-24 01:14:29,158 INFO L175 Difference]: Start difference. First operand has 88 places, 101 transitions, 889 flow. Second operand 7 states and 167 transitions. [2024-11-24 01:14:29,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 197 transitions, 1668 flow [2024-11-24 01:14:30,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 197 transitions, 1652 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-24 01:14:30,316 INFO L231 Difference]: Finished difference. Result has 94 places, 107 transitions, 1088 flow [2024-11-24 01:14:30,317 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1088, PETRI_PLACES=94, PETRI_TRANSITIONS=107} [2024-11-24 01:14:30,317 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 50 predicate places. [2024-11-24 01:14:30,318 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 107 transitions, 1088 flow [2024-11-24 01:14:30,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 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) [2024-11-24 01:14:30,318 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:14:30,318 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:14:30,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 01:14:30,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:14:30,523 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-24 01:14:30,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:14:30,523 INFO L85 PathProgramCache]: Analyzing trace with hash 895924580, now seen corresponding path program 3 times [2024-11-24 01:14:30,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:14:30,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250159237] [2024-11-24 01:14:30,524 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:14:30,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:14:30,539 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-24 01:14:30,539 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:14:30,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:14:30,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:14:30,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250159237] [2024-11-24 01:14:30,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250159237] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:14:30,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308256743] [2024-11-24 01:14:30,636 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:14:30,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:14:30,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:14:30,640 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:14:30,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 01:14:30,729 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-24 01:14:30,730 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:14:30,731 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:14:30,732 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:14:30,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:14:30,796 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:14:30,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:14:30,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308256743] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:14:30,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:14:30,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-24 01:14:30,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628006720] [2024-11-24 01:14:30,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:14:30,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:14:30,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:14:30,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:14:30,851 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:14:30,860 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2024-11-24 01:14:30,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 107 transitions, 1088 flow. Second operand has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:14:30,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:14:30,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2024-11-24 01:14:30,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:14:35,053 INFO L124 PetriNetUnfolderBase]: 29104/37955 cut-off events. [2024-11-24 01:14:35,054 INFO L125 PetriNetUnfolderBase]: For 131257/131257 co-relation queries the response was YES. [2024-11-24 01:14:35,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139202 conditions, 37955 events. 29104/37955 cut-off events. For 131257/131257 co-relation queries the response was YES. Maximal size of possible extension queue 1232. Compared 195162 event pairs, 6364 based on Foata normal form. 324/38279 useless extension candidates. Maximal degree in co-relation 128135. Up to 14721 conditions per place. [2024-11-24 01:14:35,366 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 191 selfloop transitions, 34 changer transitions 0/226 dead transitions. [2024-11-24 01:14:35,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 226 transitions, 2015 flow [2024-11-24 01:14:35,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:14:35,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-24 01:14:35,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-11-24 01:14:35,368 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.615625 [2024-11-24 01:14:35,368 INFO L175 Difference]: Start difference. First operand has 94 places, 107 transitions, 1088 flow. Second operand 8 states and 197 transitions. [2024-11-24 01:14:35,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 226 transitions, 2015 flow [2024-11-24 01:14:36,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 226 transitions, 1836 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-11-24 01:14:36,185 INFO L231 Difference]: Finished difference. Result has 95 places, 111 transitions, 1061 flow [2024-11-24 01:14:36,185 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1061, PETRI_PLACES=95, PETRI_TRANSITIONS=111} [2024-11-24 01:14:36,185 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 51 predicate places. [2024-11-24 01:14:36,186 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 111 transitions, 1061 flow [2024-11-24 01:14:36,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:14:36,186 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:14:36,186 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:14:36,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 01:14:36,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:14:36,387 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-24 01:14:36,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:14:36,387 INFO L85 PathProgramCache]: Analyzing trace with hash -735439858, now seen corresponding path program 4 times [2024-11-24 01:14:36,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:14:36,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068893210] [2024-11-24 01:14:36,388 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 01:14:36,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:14:36,410 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 01:14:36,410 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:14:36,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:14:36,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:14:36,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068893210] [2024-11-24 01:14:36,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068893210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:14:36,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:14:36,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:14:36,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288665018] [2024-11-24 01:14:36,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:14:36,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:14:36,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:14:36,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:14:36,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:14:36,477 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2024-11-24 01:14:36,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 111 transitions, 1061 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:14:36,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:14:36,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2024-11-24 01:14:36,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:14:40,135 INFO L124 PetriNetUnfolderBase]: 29137/38024 cut-off events. [2024-11-24 01:14:40,136 INFO L125 PetriNetUnfolderBase]: For 120098/120098 co-relation queries the response was YES. [2024-11-24 01:14:40,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138834 conditions, 38024 events. 29137/38024 cut-off events. For 120098/120098 co-relation queries the response was YES. Maximal size of possible extension queue 1238. Compared 193486 event pairs, 10444 based on Foata normal form. 36/38060 useless extension candidates. Maximal degree in co-relation 116618. Up to 23125 conditions per place. [2024-11-24 01:14:40,379 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 130 selfloop transitions, 22 changer transitions 10/163 dead transitions. [2024-11-24 01:14:40,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 163 transitions, 1562 flow [2024-11-24 01:14:40,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:14:40,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-24 01:14:40,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-11-24 01:14:40,380 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.58 [2024-11-24 01:14:40,380 INFO L175 Difference]: Start difference. First operand has 95 places, 111 transitions, 1061 flow. Second operand 5 states and 116 transitions. [2024-11-24 01:14:40,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 163 transitions, 1562 flow [2024-11-24 01:14:41,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 163 transitions, 1473 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-11-24 01:14:41,061 INFO L231 Difference]: Finished difference. Result has 96 places, 110 transitions, 1012 flow [2024-11-24 01:14:41,061 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1012, PETRI_PLACES=96, PETRI_TRANSITIONS=110} [2024-11-24 01:14:41,062 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 52 predicate places. [2024-11-24 01:14:41,062 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 110 transitions, 1012 flow [2024-11-24 01:14:41,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:14:41,062 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:14:41,062 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:14:41,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 01:14:41,063 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-24 01:14:41,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:14:41,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1895752778, now seen corresponding path program 5 times [2024-11-24 01:14:41,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:14:41,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82948610] [2024-11-24 01:14:41,064 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 01:14:41,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:14:41,088 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:14:41,089 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:14:41,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:14:41,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:14:41,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82948610] [2024-11-24 01:14:41,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82948610] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:14:41,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344954366] [2024-11-24 01:14:41,317 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 01:14:41,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:14:41,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:14:41,321 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:14:41,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 01:14:41,749 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:14:41,750 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:14:41,751 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:14:41,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:14:41,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:14:41,834 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:14:41,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:14:41,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344954366] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:14:41,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:14:41,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-24 01:14:41,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207147331] [2024-11-24 01:14:41,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:14:41,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:14:41,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:14:41,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:14:41,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:14:41,909 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2024-11-24 01:14:41,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 110 transitions, 1012 flow. Second operand has 11 states, 11 states have (on average 9.0) internal successors, (99), 11 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:14:41,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:14:41,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2024-11-24 01:14:41,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:14:45,532 INFO L124 PetriNetUnfolderBase]: 28165/36998 cut-off events. [2024-11-24 01:14:45,532 INFO L125 PetriNetUnfolderBase]: For 106903/106903 co-relation queries the response was YES. [2024-11-24 01:14:45,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129990 conditions, 36998 events. 28165/36998 cut-off events. For 106903/106903 co-relation queries the response was YES. Maximal size of possible extension queue 1206. Compared 189425 event pairs, 2628 based on Foata normal form. 813/37811 useless extension candidates. Maximal degree in co-relation 103113. Up to 7810 conditions per place. [2024-11-24 01:14:45,718 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 270 selfloop transitions, 74 changer transitions 1/346 dead transitions. [2024-11-24 01:14:45,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 346 transitions, 2685 flow [2024-11-24 01:14:45,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 01:14:45,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-24 01:14:45,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 333 transitions. [2024-11-24 01:14:45,720 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.555 [2024-11-24 01:14:45,721 INFO L175 Difference]: Start difference. First operand has 96 places, 110 transitions, 1012 flow. Second operand 15 states and 333 transitions. [2024-11-24 01:14:45,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 346 transitions, 2685 flow [2024-11-24 01:14:46,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 346 transitions, 2519 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-11-24 01:14:46,605 INFO L231 Difference]: Finished difference. Result has 112 places, 150 transitions, 1459 flow [2024-11-24 01:14:46,605 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1459, PETRI_PLACES=112, PETRI_TRANSITIONS=150} [2024-11-24 01:14:46,606 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 68 predicate places. [2024-11-24 01:14:46,606 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 150 transitions, 1459 flow [2024-11-24 01:14:46,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.0) internal successors, (99), 11 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:14:46,607 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:14:46,607 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:14:46,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 01:14:46,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-24 01:14:46,808 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-24 01:14:46,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:14:46,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1673061980, now seen corresponding path program 6 times [2024-11-24 01:14:46,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:14:46,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587095856] [2024-11-24 01:14:46,808 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 01:14:46,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:14:46,822 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-24 01:14:46,823 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:14:46,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:14:46,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:14:46,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587095856] [2024-11-24 01:14:46,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587095856] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:14:46,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:14:46,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:14:46,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011819400] [2024-11-24 01:14:46,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:14:46,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:14:46,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:14:46,915 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:14:46,915 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:14:46,923 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-24 01:14:46,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 150 transitions, 1459 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:14:46,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:14:46,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-24 01:14:46,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:14:50,446 INFO L124 PetriNetUnfolderBase]: 24410/32643 cut-off events. [2024-11-24 01:14:50,447 INFO L125 PetriNetUnfolderBase]: For 130878/131057 co-relation queries the response was YES. [2024-11-24 01:14:50,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129607 conditions, 32643 events. 24410/32643 cut-off events. For 130878/131057 co-relation queries the response was YES. Maximal size of possible extension queue 1242. Compared 177356 event pairs, 8671 based on Foata normal form. 24/32459 useless extension candidates. Maximal degree in co-relation 112460. Up to 19880 conditions per place. [2024-11-24 01:14:50,662 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 136 selfloop transitions, 29 changer transitions 8/195 dead transitions. [2024-11-24 01:14:50,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 195 transitions, 1984 flow [2024-11-24 01:14:51,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:14:51,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-24 01:14:51,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-11-24 01:14:51,104 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.565 [2024-11-24 01:14:51,104 INFO L175 Difference]: Start difference. First operand has 112 places, 150 transitions, 1459 flow. Second operand 5 states and 113 transitions. [2024-11-24 01:14:51,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 195 transitions, 1984 flow [2024-11-24 01:14:52,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 195 transitions, 1932 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-11-24 01:14:52,223 INFO L231 Difference]: Finished difference. Result has 116 places, 150 transitions, 1489 flow [2024-11-24 01:14:52,223 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1411, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1489, PETRI_PLACES=116, PETRI_TRANSITIONS=150} [2024-11-24 01:14:52,224 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 72 predicate places. [2024-11-24 01:14:52,224 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 150 transitions, 1489 flow [2024-11-24 01:14:52,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:14:52,224 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:14:52,224 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:14:52,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 01:14:52,224 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-24 01:14:52,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:14:52,225 INFO L85 PathProgramCache]: Analyzing trace with hash -2016105090, now seen corresponding path program 6 times [2024-11-24 01:14:52,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:14:52,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644798479] [2024-11-24 01:14:52,225 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 01:14:52,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:14:52,237 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-24 01:14:52,238 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:14:52,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:14:52,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:14:52,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644798479] [2024-11-24 01:14:52,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644798479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:14:52,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:14:52,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:14:52,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805957640] [2024-11-24 01:14:52,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:14:52,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:14:52,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:14:52,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:14:52,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:14:52,313 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-24 01:14:52,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 150 transitions, 1489 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:14:52,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:14:52,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-24 01:14:52,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:14:55,406 INFO L124 PetriNetUnfolderBase]: 23262/30932 cut-off events. [2024-11-24 01:14:55,406 INFO L125 PetriNetUnfolderBase]: For 128148/128301 co-relation queries the response was YES. [2024-11-24 01:14:55,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123726 conditions, 30932 events. 23262/30932 cut-off events. For 128148/128301 co-relation queries the response was YES. Maximal size of possible extension queue 1113. Compared 163011 event pairs, 8692 based on Foata normal form. 70/30941 useless extension candidates. Maximal degree in co-relation 104508. Up to 18777 conditions per place. [2024-11-24 01:14:55,649 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 134 selfloop transitions, 28 changer transitions 10/192 dead transitions. [2024-11-24 01:14:55,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 192 transitions, 1965 flow [2024-11-24 01:14:55,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:14:55,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-24 01:14:55,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-11-24 01:14:55,651 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.57 [2024-11-24 01:14:55,651 INFO L175 Difference]: Start difference. First operand has 116 places, 150 transitions, 1489 flow. Second operand 5 states and 114 transitions. [2024-11-24 01:14:55,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 192 transitions, 1965 flow [2024-11-24 01:14:56,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 192 transitions, 1940 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-24 01:14:56,709 INFO L231 Difference]: Finished difference. Result has 117 places, 149 transitions, 1501 flow [2024-11-24 01:14:56,709 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1464, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1501, PETRI_PLACES=117, PETRI_TRANSITIONS=149} [2024-11-24 01:14:56,710 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 73 predicate places. [2024-11-24 01:14:56,710 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 149 transitions, 1501 flow [2024-11-24 01:14:56,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:14:56,710 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:14:56,710 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:14:56,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 01:14:56,711 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-24 01:14:56,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:14:56,711 INFO L85 PathProgramCache]: Analyzing trace with hash 426409730, now seen corresponding path program 1 times [2024-11-24 01:14:56,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:14:56,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208812498] [2024-11-24 01:14:56,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:14:56,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:14:56,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:14:56,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:14:56,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:14:56,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208812498] [2024-11-24 01:14:56,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208812498] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:14:56,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517426464] [2024-11-24 01:14:56,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:14:56,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:14:56,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:14:56,958 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:14:56,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38bed445-7450-4ef5-8bd1-24e1c6857c26/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 01:14:57,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:14:57,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-24 01:14:57,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:14:57,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:14:57,269 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:14:57,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:14:57,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517426464] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:14:57,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:14:57,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 6 [2024-11-24 01:14:57,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129248421] [2024-11-24 01:14:57,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:14:57,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:14:57,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:14:57,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:14:57,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:14:57,342 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-24 01:14:57,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 149 transitions, 1501 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:14:57,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:14:57,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-24 01:14:57,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:15:04,342 INFO L124 PetriNetUnfolderBase]: 45802/62162 cut-off events. [2024-11-24 01:15:04,343 INFO L125 PetriNetUnfolderBase]: For 310360/311085 co-relation queries the response was YES. [2024-11-24 01:15:04,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243621 conditions, 62162 events. 45802/62162 cut-off events. For 310360/311085 co-relation queries the response was YES. Maximal size of possible extension queue 1913. Compared 367356 event pairs, 5742 based on Foata normal form. 1392/63213 useless extension candidates. Maximal degree in co-relation 211159. Up to 26786 conditions per place. [2024-11-24 01:15:04,964 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 343 selfloop transitions, 29 changer transitions 4/417 dead transitions. [2024-11-24 01:15:04,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 417 transitions, 4460 flow [2024-11-24 01:15:04,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:15:04,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-24 01:15:04,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 209 transitions. [2024-11-24 01:15:04,967 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7464285714285714 [2024-11-24 01:15:04,967 INFO L175 Difference]: Start difference. First operand has 117 places, 149 transitions, 1501 flow. Second operand 7 states and 209 transitions. [2024-11-24 01:15:04,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 417 transitions, 4460 flow