./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i --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_077664fa-16a5-4546-93c1-e7a0e3c939c1/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_077664fa-16a5-4546-93c1-e7a0e3c939c1/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_077664fa-16a5-4546-93c1-e7a0e3c939c1/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_077664fa-16a5-4546-93c1-e7a0e3c939c1/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_077664fa-16a5-4546-93c1-e7a0e3c939c1/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_077664fa-16a5-4546-93c1-e7a0e3c939c1/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 5bf99dd5722e6551de991a345b21615b777cf7cef3d452afb8b79773fd45d3d8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:37:38,518 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:37:38,595 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_077664fa-16a5-4546-93c1-e7a0e3c939c1/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:37:38,602 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:37:38,602 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:37:38,656 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:37:38,658 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:37:38,658 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:37:38,659 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:37:38,659 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:37:38,660 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:37:38,661 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:37:38,661 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:37:38,662 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:37:38,662 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:37:38,663 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:37:38,663 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:37:38,663 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:37:38,663 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:37:38,663 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:37:38,664 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:37:38,664 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:37:38,664 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:37:38,664 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:37:38,664 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:37:38,664 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:37:38,665 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:37:38,665 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:37:38,665 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:37:38,665 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:37:38,665 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:37:38,665 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:37:38,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:37:38,667 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:37:38,667 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:37:38,667 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:37:38,667 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:37:38,667 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:37:38,668 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:37:38,668 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:37:38,668 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:37:38,668 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:37:38,668 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:37:38,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:37:38,669 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:37:38,669 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:37:38,669 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:37:38,669 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:37:38,669 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_077664fa-16a5-4546-93c1-e7a0e3c939c1/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 -> 5bf99dd5722e6551de991a345b21615b777cf7cef3d452afb8b79773fd45d3d8 [2024-11-24 00:37:39,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:37:39,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:37:39,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:37:39,095 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:37:39,095 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:37:39,097 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_077664fa-16a5-4546-93c1-e7a0e3c939c1/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2024-11-24 00:37:42,876 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_077664fa-16a5-4546-93c1-e7a0e3c939c1/bin/uautomizer-verify-LYvppIcaGC/data/bd82eea9c/ca3ef1432e354fa591a1a6ac02c1fe27/FLAG60f5b4241 [2024-11-24 00:37:43,335 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:37:43,336 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_077664fa-16a5-4546-93c1-e7a0e3c939c1/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2024-11-24 00:37:43,356 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_077664fa-16a5-4546-93c1-e7a0e3c939c1/bin/uautomizer-verify-LYvppIcaGC/data/bd82eea9c/ca3ef1432e354fa591a1a6ac02c1fe27/FLAG60f5b4241 [2024-11-24 00:37:43,377 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_077664fa-16a5-4546-93c1-e7a0e3c939c1/bin/uautomizer-verify-LYvppIcaGC/data/bd82eea9c/ca3ef1432e354fa591a1a6ac02c1fe27 [2024-11-24 00:37:43,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:37:43,382 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:37:43,383 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:37:43,383 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:37:43,389 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:37:43,391 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:37:43" (1/1) ... [2024-11-24 00:37:43,392 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1470fa6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:37:43, skipping insertion in model container [2024-11-24 00:37:43,392 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:37:43" (1/1) ... [2024-11-24 00:37:43,433 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:37:43,784 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_077664fa-16a5-4546-93c1-e7a0e3c939c1/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i[30869,30882] [2024-11-24 00:37:43,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:37:43,805 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:37:43,848 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_077664fa-16a5-4546-93c1-e7a0e3c939c1/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i[30869,30882] [2024-11-24 00:37:43,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:37:43,886 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:37:43,886 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:37:43 WrapperNode [2024-11-24 00:37:43,887 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:37:43,888 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:37:43,888 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:37:43,888 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:37:43,895 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:37:43" (1/1) ... [2024-11-24 00:37:43,907 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:37:43" (1/1) ... [2024-11-24 00:37:43,927 INFO L138 Inliner]: procedures = 172, calls = 36, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 164 [2024-11-24 00:37:43,927 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:37:43,928 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:37:43,928 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:37:43,928 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:37:43,937 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:37:43" (1/1) ... [2024-11-24 00:37:43,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:37:43" (1/1) ... [2024-11-24 00:37:43,940 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:37:43" (1/1) ... [2024-11-24 00:37:43,960 INFO L175 MemorySlicer]: Split 16 memory accesses to 4 slices as follows [2, 5, 3, 6]. 38 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0, 0]. The 5 writes are split as follows [0, 1, 2, 2]. [2024-11-24 00:37:43,961 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:37:43" (1/1) ... [2024-11-24 00:37:43,961 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:37:43" (1/1) ... [2024-11-24 00:37:43,974 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:37:43" (1/1) ... [2024-11-24 00:37:43,975 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:37:43" (1/1) ... [2024-11-24 00:37:43,982 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:37:43" (1/1) ... [2024-11-24 00:37:43,983 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:37:43" (1/1) ... [2024-11-24 00:37:43,987 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:37:43" (1/1) ... [2024-11-24 00:37:43,990 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:37:43,994 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:37:43,994 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:37:43,994 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:37:43,998 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:37:43" (1/1) ... [2024-11-24 00:37:44,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:37:44,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_077664fa-16a5-4546-93c1-e7a0e3c939c1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:37:44,033 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_077664fa-16a5-4546-93c1-e7a0e3c939c1/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:37:44,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_077664fa-16a5-4546-93c1-e7a0e3c939c1/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:37:44,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 00:37:44,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 00:37:44,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-24 00:37:44,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-24 00:37:44,064 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-24 00:37:44,064 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-24 00:37:44,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 00:37:44,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 00:37:44,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-24 00:37:44,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-24 00:37:44,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-24 00:37:44,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:37:44,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-24 00:37:44,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-24 00:37:44,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:37:44,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 00:37:44,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-24 00:37:44,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-24 00:37:44,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-24 00:37:44,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:37:44,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:37:44,068 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 00:37:44,250 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:37:44,252 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:37:44,645 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-24 00:37:44,645 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:37:45,185 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:37:45,185 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-24 00:37:45,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:37:45 BoogieIcfgContainer [2024-11-24 00:37:45,188 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:37:45,190 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:37:45,191 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:37:45,198 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:37:45,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:37:43" (1/3) ... [2024-11-24 00:37:45,199 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66f9ba11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:37:45, skipping insertion in model container [2024-11-24 00:37:45,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:37:43" (2/3) ... [2024-11-24 00:37:45,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66f9ba11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:37:45, skipping insertion in model container [2024-11-24 00:37:45,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:37:45" (3/3) ... [2024-11-24 00:37:45,202 INFO L128 eAbstractionObserver]: Analyzing ICFG 36_stack_cas_p0_vs_concur.i [2024-11-24 00:37:45,223 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:37:45,225 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 36_stack_cas_p0_vs_concur.i that has 2 procedures, 19 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-24 00:37:45,225 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-24 00:37:45,296 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-24 00:37:45,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 22 places, 23 transitions, 50 flow [2024-11-24 00:37:45,379 INFO L124 PetriNetUnfolderBase]: 4/25 cut-off events. [2024-11-24 00:37:45,383 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 00:37:45,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 25 events. 4/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 27 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 20. Up to 2 conditions per place. [2024-11-24 00:37:45,387 INFO L82 GeneralOperation]: Start removeDead. Operand has 22 places, 23 transitions, 50 flow [2024-11-24 00:37:45,390 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 23 transitions, 50 flow [2024-11-24 00:37:45,405 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:37:45,420 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;@1dc1324c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:37:45,420 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-24 00:37:45,432 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-24 00:37:45,432 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-24 00:37:45,432 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 00:37:45,433 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:37:45,433 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-24 00:37:45,434 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:37:45,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:37:45,439 INFO L85 PathProgramCache]: Analyzing trace with hash -46789093, now seen corresponding path program 1 times [2024-11-24 00:37:45,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:37:45,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028807998] [2024-11-24 00:37:45,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:37:45,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:37:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:37:46,240 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 00:37:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:37:46,320 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-24 00:37:46,322 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-24 00:37:46,324 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2024-11-24 00:37:46,326 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2024-11-24 00:37:46,327 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2024-11-24 00:37:46,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:37:46,331 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-11-24 00:37:46,334 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-24 00:37:46,335 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-24 00:37:46,380 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-24 00:37:46,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 41 transitions, 92 flow [2024-11-24 00:37:46,410 INFO L124 PetriNetUnfolderBase]: 8/46 cut-off events. [2024-11-24 00:37:46,410 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-24 00:37:46,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 46 events. 8/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 89 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 37. Up to 3 conditions per place. [2024-11-24 00:37:46,414 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 41 transitions, 92 flow [2024-11-24 00:37:46,415 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 41 transitions, 92 flow [2024-11-24 00:37:46,416 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:37:46,421 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;@1dc1324c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:37:46,421 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-24 00:37:46,445 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-24 00:37:46,445 INFO L124 PetriNetUnfolderBase]: 1/23 cut-off events. [2024-11-24 00:37:46,445 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-24 00:37:46,445 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:37:46,445 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-24 00:37:46,446 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-24 00:37:46,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:37:46,446 INFO L85 PathProgramCache]: Analyzing trace with hash 469582406, now seen corresponding path program 1 times [2024-11-24 00:37:46,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:37:46,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557139686] [2024-11-24 00:37:46,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:37:46,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:37:46,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:37:46,871 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 00:37:46,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:37:46,937 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-24 00:37:46,937 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-24 00:37:46,937 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-24 00:37:46,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-11-24 00:37:46,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-11-24 00:37:46,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-11-24 00:37:46,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:37:46,938 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-11-24 00:37:46,943 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-24 00:37:46,943 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-24 00:37:47,012 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-24 00:37:47,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 59 transitions, 136 flow [2024-11-24 00:37:47,051 INFO L124 PetriNetUnfolderBase]: 12/67 cut-off events. [2024-11-24 00:37:47,051 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-24 00:37:47,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 67 events. 12/67 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 163 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 54. Up to 4 conditions per place. [2024-11-24 00:37:47,052 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 59 transitions, 136 flow [2024-11-24 00:37:47,054 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 59 transitions, 136 flow [2024-11-24 00:37:47,055 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:37:47,056 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;@1dc1324c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:37:47,056 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-24 00:37:47,070 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-24 00:37:47,070 INFO L124 PetriNetUnfolderBase]: 3/39 cut-off events. [2024-11-24 00:37:47,070 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-24 00:37:47,070 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:37:47,071 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:37:47,071 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-24 00:37:47,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:37:47,071 INFO L85 PathProgramCache]: Analyzing trace with hash 2097353627, now seen corresponding path program 1 times [2024-11-24 00:37:47,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:37:47,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253796020] [2024-11-24 00:37:47,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:37:47,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:37:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:37:47,435 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 00:37:47,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:37:47,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253796020] [2024-11-24 00:37:47,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253796020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:37:47,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:37:47,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:37:47,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261968156] [2024-11-24 00:37:47,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:37:47,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:37:47,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:37:47,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:37:47,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:37:47,488 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 59 [2024-11-24 00:37:47,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 59 transitions, 136 flow. Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 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 00:37:47,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:37:47,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 59 [2024-11-24 00:37:47,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:37:51,079 INFO L124 PetriNetUnfolderBase]: 16061/21735 cut-off events. [2024-11-24 00:37:51,079 INFO L125 PetriNetUnfolderBase]: For 944/944 co-relation queries the response was YES. [2024-11-24 00:37:51,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44056 conditions, 21735 events. 16061/21735 cut-off events. For 944/944 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 104450 event pairs, 13319 based on Foata normal form. 0/18973 useless extension candidates. Maximal degree in co-relation 25121. Up to 21703 conditions per place. [2024-11-24 00:37:51,273 INFO L140 encePairwiseOnDemand]: 49/59 looper letters, 42 selfloop transitions, 0 changer transitions 0/46 dead transitions. [2024-11-24 00:37:51,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 46 transitions, 194 flow [2024-11-24 00:37:51,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:37:51,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-24 00:37:51,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 60 transitions. [2024-11-24 00:37:51,293 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5084745762711864 [2024-11-24 00:37:51,295 INFO L175 Difference]: Start difference. First operand has 54 places, 59 transitions, 136 flow. Second operand 2 states and 60 transitions. [2024-11-24 00:37:51,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 46 transitions, 194 flow [2024-11-24 00:37:51,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 192 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-24 00:37:51,311 INFO L231 Difference]: Finished difference. Result has 48 places, 46 transitions, 108 flow [2024-11-24 00:37:51,315 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=108, PETRI_PLACES=48, PETRI_TRANSITIONS=46} [2024-11-24 00:37:51,319 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -6 predicate places. [2024-11-24 00:37:51,320 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 46 transitions, 108 flow [2024-11-24 00:37:51,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 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 00:37:51,320 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:37:51,320 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-24 00:37:51,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:37:51,321 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-24 00:37:51,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:37:51,324 INFO L85 PathProgramCache]: Analyzing trace with hash -90928806, now seen corresponding path program 1 times [2024-11-24 00:37:51,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:37:51,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041410866] [2024-11-24 00:37:51,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:37:51,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:37:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:37:51,982 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 00:37:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:37:52,021 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-24 00:37:52,021 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-24 00:37:52,021 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-24 00:37:52,022 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-24 00:37:52,022 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-11-24 00:37:52,022 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-24 00:37:52,022 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-24 00:37:52,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:37:52,022 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-24 00:37:52,023 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-24 00:37:52,023 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-24 00:37:52,101 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-24 00:37:52,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 77 transitions, 182 flow [2024-11-24 00:37:52,127 INFO L124 PetriNetUnfolderBase]: 16/88 cut-off events. [2024-11-24 00:37:52,127 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-24 00:37:52,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 88 events. 16/88 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 229 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 79. Up to 5 conditions per place. [2024-11-24 00:37:52,129 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 77 transitions, 182 flow [2024-11-24 00:37:52,131 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 77 transitions, 182 flow [2024-11-24 00:37:52,135 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:37:52,136 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;@1dc1324c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:37:52,136 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-24 00:37:52,152 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-24 00:37:52,152 INFO L124 PetriNetUnfolderBase]: 3/39 cut-off events. [2024-11-24 00:37:52,152 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-24 00:37:52,153 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:37:52,153 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:37:52,153 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-24 00:37:52,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:37:52,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1744645977, now seen corresponding path program 1 times [2024-11-24 00:37:52,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:37:52,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914269448] [2024-11-24 00:37:52,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:37:52,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:37:52,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:37:52,827 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 00:37:52,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:37:52,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914269448] [2024-11-24 00:37:52,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914269448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:37:52,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:37:52,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:37:52,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446738301] [2024-11-24 00:37:52,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:37:52,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:37:52,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:37:52,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:37:52,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:37:52,830 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 77 [2024-11-24 00:37:52,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 77 transitions, 182 flow. Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 00:37:52,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:37:52,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 77 [2024-11-24 00:37:52,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:38:26,894 INFO L124 PetriNetUnfolderBase]: 266291/334313 cut-off events. [2024-11-24 00:38:26,894 INFO L125 PetriNetUnfolderBase]: For 19044/19044 co-relation queries the response was YES. [2024-11-24 00:38:27,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 677633 conditions, 334313 events. 266291/334313 cut-off events. For 19044/19044 co-relation queries the response was YES. Maximal size of possible extension queue 4626. Compared 1806937 event pairs, 222087 based on Foata normal form. 0/289943 useless extension candidates. Maximal degree in co-relation 163645. Up to 334061 conditions per place. [2024-11-24 00:38:28,636 INFO L140 encePairwiseOnDemand]: 64/77 looper letters, 55 selfloop transitions, 0 changer transitions 0/60 dead transitions. [2024-11-24 00:38:28,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 60 transitions, 258 flow [2024-11-24 00:38:28,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:38:28,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-24 00:38:28,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 78 transitions. [2024-11-24 00:38:28,638 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5064935064935064 [2024-11-24 00:38:28,638 INFO L175 Difference]: Start difference. First operand has 70 places, 77 transitions, 182 flow. Second operand 2 states and 78 transitions. [2024-11-24 00:38:28,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 60 transitions, 258 flow [2024-11-24 00:38:28,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 60 transitions, 252 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-24 00:38:28,682 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 142 flow [2024-11-24 00:38:28,683 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=142, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2024-11-24 00:38:28,684 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, -8 predicate places. [2024-11-24 00:38:28,684 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 142 flow [2024-11-24 00:38:28,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 00:38:28,685 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:38:28,685 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:38:28,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 00:38:28,685 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-24 00:38:28,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:38:28,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1140663386, now seen corresponding path program 1 times [2024-11-24 00:38:28,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:38:28,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084942599] [2024-11-24 00:38:28,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:38:28,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:38:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:38:29,472 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 00:38:29,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:38:29,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084942599] [2024-11-24 00:38:29,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084942599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:38:29,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:38:29,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:38:29,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102791211] [2024-11-24 00:38:29,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:38:29,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:38:29,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:38:29,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:38:29,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:38:29,476 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 77 [2024-11-24 00:38:29,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 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 00:38:29,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:38:29,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 77 [2024-11-24 00:38:29,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand