./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --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 55711f117aca8cc6da45707674eed41f8615ce4fb09ace088988b9afc0dc0851 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:04:43,116 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:04:43,164 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 01:04:43,169 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:04:43,169 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:04:43,183 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:04:43,183 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:04:43,183 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:04:43,184 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:04:43,184 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:04:43,184 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:04:43,184 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:04:43,184 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:04:43,184 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:04:43,184 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:04:43,184 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:04:43,185 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:04:43,185 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 01:04:43,185 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:04:43,185 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 01:04:43,185 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:04:43,185 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:04:43,185 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:04:43,185 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:04:43,185 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 01:04:43,185 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:04:43,185 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:04:43,186 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:04:43,186 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:04:43,186 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:04:43,186 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:04:43,186 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:04:43,186 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:04:43,186 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:04:43,186 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:04:43,186 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:04:43,186 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:04:43,187 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:04:43,187 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:04:43,187 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:04:43,187 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:04:43,187 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:04:43,187 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:04:43,187 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 -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux 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 -> 55711f117aca8cc6da45707674eed41f8615ce4fb09ace088988b9afc0dc0851 [2025-02-08 01:04:43,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:04:43,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:04:43,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:04:43,456 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:04:43,456 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:04:43,458 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-02-08 01:04:44,733 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/279562732/ecda8f7f752741a1b742a37a1776ca27/FLAGcef3a36d7 [2025-02-08 01:04:44,972 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:04:44,973 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-02-08 01:04:44,985 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/279562732/ecda8f7f752741a1b742a37a1776ca27/FLAGcef3a36d7 [2025-02-08 01:04:44,997 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/279562732/ecda8f7f752741a1b742a37a1776ca27 [2025-02-08 01:04:44,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:04:44,999 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:04:45,000 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:04:45,000 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:04:45,003 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:04:45,004 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:04:44" (1/1) ... [2025-02-08 01:04:45,005 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cf0269b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:45, skipping insertion in model container [2025-02-08 01:04:45,005 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:04:44" (1/1) ... [2025-02-08 01:04:45,040 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:04:45,151 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2025-02-08 01:04:45,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:04:45,271 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:04:45,282 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2025-02-08 01:04:45,319 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:04:45,359 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:04:45,364 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:45 WrapperNode [2025-02-08 01:04:45,364 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:04:45,365 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:04:45,365 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:04:45,365 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:04:45,373 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:45" (1/1) ... [2025-02-08 01:04:45,392 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:45" (1/1) ... [2025-02-08 01:04:45,416 INFO L138 Inliner]: procedures = 176, calls = 46, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2025-02-08 01:04:45,421 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:04:45,421 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:04:45,421 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:04:45,421 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:04:45,435 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:45" (1/1) ... [2025-02-08 01:04:45,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:45" (1/1) ... [2025-02-08 01:04:45,436 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:45" (1/1) ... [2025-02-08 01:04:45,460 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]. [2025-02-08 01:04:45,461 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:45" (1/1) ... [2025-02-08 01:04:45,465 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:45" (1/1) ... [2025-02-08 01:04:45,468 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:45" (1/1) ... [2025-02-08 01:04:45,469 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:45" (1/1) ... [2025-02-08 01:04:45,474 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:45" (1/1) ... [2025-02-08 01:04:45,475 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:45" (1/1) ... [2025-02-08 01:04:45,480 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:04:45,480 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:04:45,481 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:04:45,481 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:04:45,481 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:45" (1/1) ... [2025-02-08 01:04:45,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:04:45,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:04:45,525 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 01:04:45,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 01:04:45,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 01:04:45,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:04:45,559 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-02-08 01:04:45,559 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-02-08 01:04:45,559 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-02-08 01:04:45,559 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-02-08 01:04:45,559 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-02-08 01:04:45,559 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-02-08 01:04:45,559 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-02-08 01:04:45,559 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-02-08 01:04:45,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:04:45,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 01:04:45,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:04:45,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:04:45,561 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 01:04:45,669 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:04:45,671 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:04:45,856 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 01:04:45,857 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:04:45,949 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:04:45,949 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:04:45,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:04:45 BoogieIcfgContainer [2025-02-08 01:04:45,950 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:04:45,951 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:04:45,952 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:04:45,956 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:04:45,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:04:44" (1/3) ... [2025-02-08 01:04:45,957 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65cb6744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:04:45, skipping insertion in model container [2025-02-08 01:04:45,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:45" (2/3) ... [2025-02-08 01:04:45,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65cb6744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:04:45, skipping insertion in model container [2025-02-08 01:04:45,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:04:45" (3/3) ... [2025-02-08 01:04:45,959 INFO L128 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-02-08 01:04:45,971 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:04:45,973 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i that has 5 procedures, 45 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-02-08 01:04:45,974 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 01:04:46,027 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 01:04:46,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 45 transitions, 106 flow [2025-02-08 01:04:46,086 INFO L124 PetriNetUnfolderBase]: 1/41 cut-off events. [2025-02-08 01:04:46,088 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 01:04:46,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 41 events. 1/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 76 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2025-02-08 01:04:46,091 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 45 transitions, 106 flow [2025-02-08 01:04:46,098 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 38 transitions, 88 flow [2025-02-08 01:04:46,103 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:04:46,115 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;@69fc9787, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:04:46,115 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-02-08 01:04:46,132 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 01:04:46,132 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2025-02-08 01:04:46,133 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 01:04:46,133 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:04:46,133 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:04:46,134 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)] === [2025-02-08 01:04:46,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:04:46,138 INFO L85 PathProgramCache]: Analyzing trace with hash -405513981, now seen corresponding path program 1 times [2025-02-08 01:04:46,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:04:46,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717075754] [2025-02-08 01:04:46,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:04:46,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:04:46,224 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 01:04:46,263 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:04:46,263 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:04:46,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:04:46,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:04:46,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:04:46,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717075754] [2025-02-08 01:04:46,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717075754] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:04:46,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:04:46,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 01:04:46,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818545584] [2025-02-08 01:04:46,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:04:46,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:04:46,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:04:46,684 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:04:46,684 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:04:46,691 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2025-02-08 01:04:46,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-02-08 01:04:46,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:04:46,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2025-02-08 01:04:46,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:04:50,212 INFO L124 PetriNetUnfolderBase]: 52674/71108 cut-off events. [2025-02-08 01:04:50,212 INFO L125 PetriNetUnfolderBase]: For 319/319 co-relation queries the response was YES. [2025-02-08 01:04:50,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142020 conditions, 71108 events. 52674/71108 cut-off events. For 319/319 co-relation queries the response was YES. Maximal size of possible extension queue 2115. Compared 436563 event pairs, 16139 based on Foata normal form. 1676/72701 useless extension candidates. Maximal degree in co-relation 142008. Up to 31940 conditions per place. [2025-02-08 01:04:50,650 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 56 selfloop transitions, 7 changer transitions 75/143 dead transitions. [2025-02-08 01:04:50,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 143 transitions, 583 flow [2025-02-08 01:04:50,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:04:50,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:04:50,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 203 transitions. [2025-02-08 01:04:50,668 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2025-02-08 01:04:50,669 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 88 flow. Second operand 7 states and 203 transitions. [2025-02-08 01:04:50,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 143 transitions, 583 flow [2025-02-08 01:04:50,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 143 transitions, 576 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 01:04:50,688 INFO L231 Difference]: Finished difference. Result has 59 places, 44 transitions, 170 flow [2025-02-08 01:04:50,691 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=170, PETRI_PLACES=59, PETRI_TRANSITIONS=44} [2025-02-08 01:04:50,696 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 8 predicate places. [2025-02-08 01:04:50,697 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 44 transitions, 170 flow [2025-02-08 01:04:50,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-02-08 01:04:50,698 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:04:50,698 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:04:50,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 01:04:50,699 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)] === [2025-02-08 01:04:50,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:04:50,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1954990340, now seen corresponding path program 1 times [2025-02-08 01:04:50,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:04:50,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658584159] [2025-02-08 01:04:50,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:04:50,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:04:50,710 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 01:04:50,726 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 01:04:50,727 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:04:50,728 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:04:50,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:04:50,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:04:50,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658584159] [2025-02-08 01:04:50,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658584159] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:04:50,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:04:50,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:04:50,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341333885] [2025-02-08 01:04:50,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:04:50,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:04:50,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:04:50,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:04:50,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:04:50,958 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2025-02-08 01:04:50,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 44 transitions, 170 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2025-02-08 01:04:50,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:04:50,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2025-02-08 01:04:50,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:04:54,412 INFO L124 PetriNetUnfolderBase]: 49367/66811 cut-off events. [2025-02-08 01:04:54,412 INFO L125 PetriNetUnfolderBase]: For 64522/64522 co-relation queries the response was YES. [2025-02-08 01:04:54,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181653 conditions, 66811 events. 49367/66811 cut-off events. For 64522/64522 co-relation queries the response was YES. Maximal size of possible extension queue 1955. Compared 409145 event pairs, 4798 based on Foata normal form. 1634/68386 useless extension candidates. Maximal degree in co-relation 181637. Up to 26979 conditions per place. [2025-02-08 01:04:54,906 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 73 selfloop transitions, 8 changer transitions 106/192 dead transitions. [2025-02-08 01:04:54,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 192 transitions, 1080 flow [2025-02-08 01:04:54,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 01:04:54,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 01:04:54,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 270 transitions. [2025-02-08 01:04:54,914 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6 [2025-02-08 01:04:54,914 INFO L175 Difference]: Start difference. First operand has 59 places, 44 transitions, 170 flow. Second operand 10 states and 270 transitions. [2025-02-08 01:04:54,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 192 transitions, 1080 flow [2025-02-08 01:04:55,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 192 transitions, 1022 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 01:04:55,175 INFO L231 Difference]: Finished difference. Result has 71 places, 48 transitions, 242 flow [2025-02-08 01:04:55,176 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=242, PETRI_PLACES=71, PETRI_TRANSITIONS=48} [2025-02-08 01:04:55,176 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 20 predicate places. [2025-02-08 01:04:55,176 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 48 transitions, 242 flow [2025-02-08 01:04:55,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2025-02-08 01:04:55,176 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:04:55,176 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:04:55,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 01:04:55,177 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)] === [2025-02-08 01:04:55,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:04:55,177 INFO L85 PathProgramCache]: Analyzing trace with hash -763446454, now seen corresponding path program 1 times [2025-02-08 01:04:55,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:04:55,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062181559] [2025-02-08 01:04:55,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:04:55,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:04:55,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 01:04:55,188 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 01:04:55,188 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:04:55,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:04:55,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:04:55,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:04:55,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062181559] [2025-02-08 01:04:55,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062181559] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:04:55,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:04:55,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:04:55,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703703350] [2025-02-08 01:04:55,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:04:55,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:04:55,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:04:55,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:04:55,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:04:55,334 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2025-02-08 01:04:55,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 48 transitions, 242 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2025-02-08 01:04:55,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:04:55,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2025-02-08 01:04:55,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:04:59,118 INFO L124 PetriNetUnfolderBase]: 47002/63636 cut-off events. [2025-02-08 01:04:59,118 INFO L125 PetriNetUnfolderBase]: For 150317/150329 co-relation queries the response was YES. [2025-02-08 01:04:59,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193296 conditions, 63636 events. 47002/63636 cut-off events. For 150317/150329 co-relation queries the response was YES. Maximal size of possible extension queue 1804. Compared 385528 event pairs, 9155 based on Foata normal form. 1430/65059 useless extension candidates. Maximal degree in co-relation 193271. Up to 27929 conditions per place. [2025-02-08 01:04:59,494 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 79 selfloop transitions, 16 changer transitions 102/202 dead transitions. [2025-02-08 01:04:59,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 202 transitions, 1330 flow [2025-02-08 01:04:59,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 01:04:59,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 01:04:59,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 270 transitions. [2025-02-08 01:04:59,496 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6 [2025-02-08 01:04:59,496 INFO L175 Difference]: Start difference. First operand has 71 places, 48 transitions, 242 flow. Second operand 10 states and 270 transitions. [2025-02-08 01:04:59,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 202 transitions, 1330 flow [2025-02-08 01:05:00,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 202 transitions, 1283 flow, removed 21 selfloop flow, removed 3 redundant places. [2025-02-08 01:05:00,079 INFO L231 Difference]: Finished difference. Result has 80 places, 59 transitions, 432 flow [2025-02-08 01:05:00,079 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=432, PETRI_PLACES=80, PETRI_TRANSITIONS=59} [2025-02-08 01:05:00,080 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 29 predicate places. [2025-02-08 01:05:00,080 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 59 transitions, 432 flow [2025-02-08 01:05:00,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2025-02-08 01:05:00,080 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:05:00,081 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] [2025-02-08 01:05:00,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 01:05:00,081 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)] === [2025-02-08 01:05:00,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:05:00,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1584004837, now seen corresponding path program 1 times [2025-02-08 01:05:00,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:05:00,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132919648] [2025-02-08 01:05:00,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:05:00,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:05:00,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 01:05:00,097 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:05:00,097 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:05:00,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:05:00,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:05:00,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:05:00,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132919648] [2025-02-08 01:05:00,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132919648] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:05:00,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:05:00,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:05:00,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645001119] [2025-02-08 01:05:00,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:05:00,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:05:00,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:05:00,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:05:00,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:05:00,187 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2025-02-08 01:05:00,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 59 transitions, 432 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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) [2025-02-08 01:05:00,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:05:00,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2025-02-08 01:05:00,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:05:03,735 INFO L124 PetriNetUnfolderBase]: 43345/58650 cut-off events. [2025-02-08 01:05:03,736 INFO L125 PetriNetUnfolderBase]: For 193980/193980 co-relation queries the response was YES. [2025-02-08 01:05:03,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193829 conditions, 58650 events. 43345/58650 cut-off events. For 193980/193980 co-relation queries the response was YES. Maximal size of possible extension queue 1526. Compared 348699 event pairs, 10152 based on Foata normal form. 1080/59716 useless extension candidates. Maximal degree in co-relation 193796. Up to 24762 conditions per place. [2025-02-08 01:05:04,144 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 87 selfloop transitions, 18 changer transitions 92/202 dead transitions. [2025-02-08 01:05:04,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 202 transitions, 1451 flow [2025-02-08 01:05:04,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 01:05:04,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 01:05:04,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 266 transitions. [2025-02-08 01:05:04,146 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5911111111111111 [2025-02-08 01:05:04,146 INFO L175 Difference]: Start difference. First operand has 80 places, 59 transitions, 432 flow. Second operand 10 states and 266 transitions. [2025-02-08 01:05:04,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 202 transitions, 1451 flow [2025-02-08 01:05:05,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 202 transitions, 1391 flow, removed 30 selfloop flow, removed 4 redundant places. [2025-02-08 01:05:05,373 INFO L231 Difference]: Finished difference. Result has 88 places, 64 transitions, 560 flow [2025-02-08 01:05:05,373 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=560, PETRI_PLACES=88, PETRI_TRANSITIONS=64} [2025-02-08 01:05:05,373 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 37 predicate places. [2025-02-08 01:05:05,373 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 64 transitions, 560 flow [2025-02-08 01:05:05,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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) [2025-02-08 01:05:05,374 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:05:05,374 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] [2025-02-08 01:05:05,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 01:05:05,374 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)] === [2025-02-08 01:05:05,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:05:05,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1156792575, now seen corresponding path program 1 times [2025-02-08 01:05:05,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:05:05,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332200271] [2025-02-08 01:05:05,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:05:05,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:05:05,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 01:05:05,385 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 01:05:05,385 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:05:05,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:05:05,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:05:05,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:05:05,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332200271] [2025-02-08 01:05:05,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332200271] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:05:05,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:05:05,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 01:05:05,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844288684] [2025-02-08 01:05:05,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:05:05,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:05:05,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:05:05,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:05:05,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:05:05,477 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2025-02-08 01:05:05,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 64 transitions, 560 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:05:05,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:05:05,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2025-02-08 01:05:05,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:05:10,315 INFO L124 PetriNetUnfolderBase]: 60306/81653 cut-off events. [2025-02-08 01:05:10,316 INFO L125 PetriNetUnfolderBase]: For 338402/338402 co-relation queries the response was YES. [2025-02-08 01:05:10,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272237 conditions, 81653 events. 60306/81653 cut-off events. For 338402/338402 co-relation queries the response was YES. Maximal size of possible extension queue 2130. Compared 503502 event pairs, 13506 based on Foata normal form. 1540/83164 useless extension candidates. Maximal degree in co-relation 272197. Up to 31721 conditions per place. [2025-02-08 01:05:10,955 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 85 selfloop transitions, 25 changer transitions 93/208 dead transitions. [2025-02-08 01:05:10,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 208 transitions, 1589 flow [2025-02-08 01:05:10,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 01:05:10,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 01:05:10,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 271 transitions. [2025-02-08 01:05:10,964 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6022222222222222 [2025-02-08 01:05:10,964 INFO L175 Difference]: Start difference. First operand has 88 places, 64 transitions, 560 flow. Second operand 10 states and 271 transitions. [2025-02-08 01:05:10,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 208 transitions, 1589 flow [2025-02-08 01:05:13,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 208 transitions, 1504 flow, removed 40 selfloop flow, removed 7 redundant places. [2025-02-08 01:05:13,902 INFO L231 Difference]: Finished difference. Result has 93 places, 65 transitions, 665 flow [2025-02-08 01:05:13,902 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=665, PETRI_PLACES=93, PETRI_TRANSITIONS=65} [2025-02-08 01:05:13,903 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 42 predicate places. [2025-02-08 01:05:13,903 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 65 transitions, 665 flow [2025-02-08 01:05:13,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:05:13,903 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:05:13,903 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] [2025-02-08 01:05:13,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 01:05:13,903 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)] === [2025-02-08 01:05:13,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:05:13,904 INFO L85 PathProgramCache]: Analyzing trace with hash 380056456, now seen corresponding path program 1 times [2025-02-08 01:05:13,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:05:13,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393914616] [2025-02-08 01:05:13,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:05:13,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:05:13,909 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 01:05:13,914 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 01:05:13,914 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:05:13,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:05:14,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:05:14,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:05:14,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393914616] [2025-02-08 01:05:14,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393914616] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:05:14,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:05:14,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:05:14,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925952181] [2025-02-08 01:05:14,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:05:14,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:05:14,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:05:14,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:05:14,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:05:14,064 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2025-02-08 01:05:14,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 65 transitions, 665 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:05:14,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:05:14,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2025-02-08 01:05:14,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:05:18,758 INFO L124 PetriNetUnfolderBase]: 55465/75621 cut-off events. [2025-02-08 01:05:18,759 INFO L125 PetriNetUnfolderBase]: For 412658/412658 co-relation queries the response was YES. [2025-02-08 01:05:19,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260172 conditions, 75621 events. 55465/75621 cut-off events. For 412658/412658 co-relation queries the response was YES. Maximal size of possible extension queue 1961. Compared 465465 event pairs, 3632 based on Foata normal form. 1540/77109 useless extension candidates. Maximal degree in co-relation 260128. Up to 32886 conditions per place. [2025-02-08 01:05:19,333 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 78 selfloop transitions, 31 changer transitions 89/203 dead transitions. [2025-02-08 01:05:19,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 203 transitions, 2040 flow [2025-02-08 01:05:19,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 01:05:19,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 01:05:19,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 250 transitions. [2025-02-08 01:05:19,334 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2025-02-08 01:05:19,334 INFO L175 Difference]: Start difference. First operand has 93 places, 65 transitions, 665 flow. Second operand 10 states and 250 transitions. [2025-02-08 01:05:19,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 203 transitions, 2040 flow [2025-02-08 01:05:20,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 203 transitions, 1988 flow, removed 26 selfloop flow, removed 7 redundant places. [2025-02-08 01:05:20,557 INFO L231 Difference]: Finished difference. Result has 98 places, 78 transitions, 1024 flow [2025-02-08 01:05:20,557 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1024, PETRI_PLACES=98, PETRI_TRANSITIONS=78} [2025-02-08 01:05:20,558 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 47 predicate places. [2025-02-08 01:05:20,558 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 78 transitions, 1024 flow [2025-02-08 01:05:20,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:05:20,558 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:05:20,558 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] [2025-02-08 01:05:20,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 01:05:20,558 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)] === [2025-02-08 01:05:20,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:05:20,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1918461599, now seen corresponding path program 1 times [2025-02-08 01:05:20,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:05:20,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567623275] [2025-02-08 01:05:20,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:05:20,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:05:20,564 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-08 01:05:20,568 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 01:05:20,568 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:05:20,569 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:05:20,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:05:20,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:05:20,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567623275] [2025-02-08 01:05:20,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567623275] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:05:20,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:05:20,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:05:20,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892492914] [2025-02-08 01:05:20,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:05:20,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:05:20,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:05:20,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:05:20,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:05:20,671 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2025-02-08 01:05:20,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 78 transitions, 1024 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2025-02-08 01:05:20,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:05:20,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2025-02-08 01:05:20,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand