./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c --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/weaver/popl20-commit-2.wvr.c -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 ec2334e7e9ec2636c6abf161aed91fff94fbff3709d38c7edad92256c3b5dc81 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:16:31,986 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:16:32,041 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 01:16:32,047 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:16:32,050 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:16:32,070 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:16:32,071 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:16:32,071 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:16:32,072 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:16:32,072 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:16:32,072 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:16:32,072 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:16:32,072 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:16:32,073 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:16:32,073 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:16:32,074 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:16:32,074 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:16:32,074 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 01:16:32,074 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:16:32,074 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 01:16:32,074 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:16:32,074 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:16:32,074 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:16:32,074 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:16:32,074 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 01:16:32,074 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:16:32,074 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:16:32,075 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:16:32,075 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:16:32,075 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:16:32,075 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:16:32,075 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:16:32,075 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:16:32,075 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:16:32,076 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:16:32,076 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:16:32,076 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:16:32,076 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:16:32,076 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:16:32,076 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:16:32,076 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:16:32,076 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:16:32,076 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:16:32,077 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 -> ec2334e7e9ec2636c6abf161aed91fff94fbff3709d38c7edad92256c3b5dc81 [2025-02-08 01:16:32,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:16:32,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:16:32,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:16:32,347 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:16:32,347 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:16:32,348 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2025-02-08 01:16:33,496 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f8669805a/2a0ceccf30a4452d896870117974e267/FLAGa3daf368f [2025-02-08 01:16:33,737 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:16:33,738 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2025-02-08 01:16:33,743 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f8669805a/2a0ceccf30a4452d896870117974e267/FLAGa3daf368f [2025-02-08 01:16:34,070 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f8669805a/2a0ceccf30a4452d896870117974e267 [2025-02-08 01:16:34,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:16:34,074 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:16:34,074 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:16:34,075 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:16:34,077 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:16:34,078 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:16:34" (1/1) ... [2025-02-08 01:16:34,080 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11ffc80c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:16:34, skipping insertion in model container [2025-02-08 01:16:34,080 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:16:34" (1/1) ... [2025-02-08 01:16:34,092 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:16:34,243 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/weaver/popl20-commit-2.wvr.c[5898,5911] [2025-02-08 01:16:34,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:16:34,262 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:16:34,287 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/weaver/popl20-commit-2.wvr.c[5898,5911] [2025-02-08 01:16:34,289 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:16:34,303 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:16:34,304 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:16:34 WrapperNode [2025-02-08 01:16:34,305 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:16:34,305 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:16:34,305 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:16:34,305 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:16:34,311 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:16:34" (1/1) ... [2025-02-08 01:16:34,324 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:16:34" (1/1) ... [2025-02-08 01:16:34,353 INFO L138 Inliner]: procedures = 25, calls = 73, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 445 [2025-02-08 01:16:34,354 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:16:34,355 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:16:34,355 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:16:34,356 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:16:34,363 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:16:34" (1/1) ... [2025-02-08 01:16:34,363 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:16:34" (1/1) ... [2025-02-08 01:16:34,366 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:16:34" (1/1) ... [2025-02-08 01:16:34,384 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2025-02-08 01:16:34,388 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:16:34" (1/1) ... [2025-02-08 01:16:34,389 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:16:34" (1/1) ... [2025-02-08 01:16:34,397 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:16:34" (1/1) ... [2025-02-08 01:16:34,398 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:16:34" (1/1) ... [2025-02-08 01:16:34,404 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:16:34" (1/1) ... [2025-02-08 01:16:34,406 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:16:34" (1/1) ... [2025-02-08 01:16:34,411 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:16:34,412 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:16:34,413 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:16:34,413 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:16:34,414 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:16:34" (1/1) ... [2025-02-08 01:16:34,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:16:34,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:16:34,445 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 01:16:34,447 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 01:16:34,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:16:34,469 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 01:16:34,469 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 01:16:34,469 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 01:16:34,469 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 01:16:34,469 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 01:16:34,469 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 01:16:34,469 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-08 01:16:34,469 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-08 01:16:34,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:16:34,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 01:16:34,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 01:16:34,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 01:16:34,470 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 01:16:34,470 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 01:16:34,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 01:16:34,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:16:34,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:16:34,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 01:16:34,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 01:16:34,473 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 01:16:34,562 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:16:34,564 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:16:35,047 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 01:16:35,047 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:16:35,384 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:16:35,385 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:16:35,385 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:16:35 BoogieIcfgContainer [2025-02-08 01:16:35,385 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:16:35,387 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:16:35,387 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:16:35,390 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:16:35,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:16:34" (1/3) ... [2025-02-08 01:16:35,391 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6e625a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:16:35, skipping insertion in model container [2025-02-08 01:16:35,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:16:34" (2/3) ... [2025-02-08 01:16:35,391 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6e625a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:16:35, skipping insertion in model container [2025-02-08 01:16:35,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:16:35" (3/3) ... [2025-02-08 01:16:35,392 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2025-02-08 01:16:35,403 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:16:35,405 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-commit-2.wvr.c that has 5 procedures, 53 locations, 1 initial locations, 8 loop locations, and 1 error locations. [2025-02-08 01:16:35,405 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 01:16:35,466 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-08 01:16:35,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 64 transitions, 156 flow [2025-02-08 01:16:35,538 INFO L124 PetriNetUnfolderBase]: 12/60 cut-off events. [2025-02-08 01:16:35,540 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-08 01:16:35,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 60 events. 12/60 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 122 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2025-02-08 01:16:35,546 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 64 transitions, 156 flow [2025-02-08 01:16:35,549 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 59 transitions, 142 flow [2025-02-08 01:16:35,557 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:16:35,566 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;@3e0bc579, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:16:35,566 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-02-08 01:16:35,606 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 01:16:35,606 INFO L124 PetriNetUnfolderBase]: 12/58 cut-off events. [2025-02-08 01:16:35,606 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-08 01:16:35,606 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:16:35,606 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:16:35,607 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 01:16:35,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:16:35,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1454968657, now seen corresponding path program 1 times [2025-02-08 01:16:35,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:16:35,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064778200] [2025-02-08 01:16:35,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:16:35,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:16:35,684 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-08 01:16:35,734 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 01:16:35,734 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:16:35,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:16:35,841 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 01:16:35,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:16:35,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064778200] [2025-02-08 01:16:35,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064778200] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:16:35,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:16:35,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 01:16:35,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052171407] [2025-02-08 01:16:35,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:16:35,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-08 01:16:35,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:16:35,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-08 01:16:35,876 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 01:16:35,877 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2025-02-08 01:16:35,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 142 flow. Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:16:35,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:16:35,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2025-02-08 01:16:35,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:16:38,795 INFO L124 PetriNetUnfolderBase]: 30762/39969 cut-off events. [2025-02-08 01:16:38,796 INFO L125 PetriNetUnfolderBase]: For 1579/1579 co-relation queries the response was YES. [2025-02-08 01:16:38,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81520 conditions, 39969 events. 30762/39969 cut-off events. For 1579/1579 co-relation queries the response was YES. Maximal size of possible extension queue 1339. Compared 206636 event pairs, 26232 based on Foata normal form. 0/35330 useless extension candidates. Maximal degree in co-relation 78021. Up to 39890 conditions per place. [2025-02-08 01:16:39,013 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 50 selfloop transitions, 0 changer transitions 0/55 dead transitions. [2025-02-08 01:16:39,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 55 transitions, 234 flow [2025-02-08 01:16:39,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-08 01:16:39,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-02-08 01:16:39,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 72 transitions. [2025-02-08 01:16:39,024 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2025-02-08 01:16:39,025 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 142 flow. Second operand 2 states and 72 transitions. [2025-02-08 01:16:39,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 55 transitions, 234 flow [2025-02-08 01:16:39,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 55 transitions, 218 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-02-08 01:16:39,045 INFO L231 Difference]: Finished difference. Result has 53 places, 55 transitions, 118 flow [2025-02-08 01:16:39,047 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=118, PETRI_PLACES=53, PETRI_TRANSITIONS=55} [2025-02-08 01:16:39,051 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, -7 predicate places. [2025-02-08 01:16:39,052 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 55 transitions, 118 flow [2025-02-08 01:16:39,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:16:39,053 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:16:39,053 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:16:39,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 01:16:39,054 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 01:16:39,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:16:39,055 INFO L85 PathProgramCache]: Analyzing trace with hash -659559929, now seen corresponding path program 1 times [2025-02-08 01:16:39,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:16:39,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356054048] [2025-02-08 01:16:39,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:16:39,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:16:39,075 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-08 01:16:39,117 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-08 01:16:39,117 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:16:39,117 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:16:39,316 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 01:16:39,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:16:39,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356054048] [2025-02-08 01:16:39,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356054048] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:16:39,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:16:39,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 01:16:39,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869480831] [2025-02-08 01:16:39,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:16:39,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 01:16:39,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:16:39,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 01:16:39,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 01:16:39,318 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2025-02-08 01:16:39,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 55 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 01:16:39,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:16:39,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2025-02-08 01:16:39,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:16:41,752 INFO L124 PetriNetUnfolderBase]: 37721/48970 cut-off events. [2025-02-08 01:16:41,753 INFO L125 PetriNetUnfolderBase]: For 472/472 co-relation queries the response was YES. [2025-02-08 01:16:41,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98669 conditions, 48970 events. 37721/48970 cut-off events. For 472/472 co-relation queries the response was YES. Maximal size of possible extension queue 1688. Compared 272064 event pairs, 8399 based on Foata normal form. 1/42926 useless extension candidates. Maximal degree in co-relation 98666. Up to 41703 conditions per place. [2025-02-08 01:16:41,975 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 76 selfloop transitions, 5 changer transitions 1/87 dead transitions. [2025-02-08 01:16:41,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 87 transitions, 353 flow [2025-02-08 01:16:41,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 01:16:41,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 01:16:41,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2025-02-08 01:16:41,979 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2025-02-08 01:16:41,979 INFO L175 Difference]: Start difference. First operand has 53 places, 55 transitions, 118 flow. Second operand 3 states and 110 transitions. [2025-02-08 01:16:41,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 87 transitions, 353 flow [2025-02-08 01:16:41,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 87 transitions, 353 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 01:16:41,983 INFO L231 Difference]: Finished difference. Result has 56 places, 59 transitions, 151 flow [2025-02-08 01:16:41,984 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=56, PETRI_TRANSITIONS=59} [2025-02-08 01:16:41,985 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, -4 predicate places. [2025-02-08 01:16:41,986 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 59 transitions, 151 flow [2025-02-08 01:16:41,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 01:16:41,987 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:16:41,987 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:16:41,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 01:16:41,987 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 01:16:41,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:16:41,987 INFO L85 PathProgramCache]: Analyzing trace with hash 570276834, now seen corresponding path program 1 times [2025-02-08 01:16:41,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:16:41,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038380157] [2025-02-08 01:16:41,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:16:41,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:16:42,004 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-08 01:16:42,027 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-08 01:16:42,027 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:16:42,027 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:16:42,368 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 01:16:42,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:16:42,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038380157] [2025-02-08 01:16:42,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038380157] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:16:42,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:16:42,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 01:16:42,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88081457] [2025-02-08 01:16:42,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:16:42,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 01:16:42,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:16:42,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 01:16:42,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 01:16:42,371 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2025-02-08 01:16:42,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 59 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:16:42,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:16:42,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2025-02-08 01:16:42,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:16:45,735 INFO L124 PetriNetUnfolderBase]: 45950/59977 cut-off events. [2025-02-08 01:16:45,735 INFO L125 PetriNetUnfolderBase]: For 5732/5732 co-relation queries the response was YES. [2025-02-08 01:16:45,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128599 conditions, 59977 events. 45950/59977 cut-off events. For 5732/5732 co-relation queries the response was YES. Maximal size of possible extension queue 1608. Compared 332324 event pairs, 17194 based on Foata normal form. 1090/53110 useless extension candidates. Maximal degree in co-relation 128594. Up to 37348 conditions per place. [2025-02-08 01:16:45,935 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 85 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2025-02-08 01:16:45,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 92 transitions, 403 flow [2025-02-08 01:16:45,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 01:16:45,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 01:16:45,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2025-02-08 01:16:45,936 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2025-02-08 01:16:45,936 INFO L175 Difference]: Start difference. First operand has 56 places, 59 transitions, 151 flow. Second operand 3 states and 112 transitions. [2025-02-08 01:16:45,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 92 transitions, 403 flow [2025-02-08 01:16:45,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 92 transitions, 399 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 01:16:45,939 INFO L231 Difference]: Finished difference. Result has 58 places, 59 transitions, 154 flow [2025-02-08 01:16:45,939 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=58, PETRI_TRANSITIONS=59} [2025-02-08 01:16:45,939 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, -2 predicate places. [2025-02-08 01:16:45,939 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 59 transitions, 154 flow [2025-02-08 01:16:45,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:16:45,940 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:16:45,940 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:16:45,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 01:16:45,940 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 01:16:45,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:16:45,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1281156226, now seen corresponding path program 1 times [2025-02-08 01:16:45,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:16:45,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253952154] [2025-02-08 01:16:45,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:16:45,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:16:45,954 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-08 01:16:45,961 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-08 01:16:45,962 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:16:45,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:16:46,056 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 01:16:46,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:16:46,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253952154] [2025-02-08 01:16:46,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253952154] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:16:46,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:16:46,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 01:16:46,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179707] [2025-02-08 01:16:46,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:16:46,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 01:16:46,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:16:46,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 01:16:46,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 01:16:46,059 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2025-02-08 01:16:46,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 59 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:16:46,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:16:46,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2025-02-08 01:16:46,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:16:48,742 INFO L124 PetriNetUnfolderBase]: 42343/55479 cut-off events. [2025-02-08 01:16:48,742 INFO L125 PetriNetUnfolderBase]: For 7456/7456 co-relation queries the response was YES. [2025-02-08 01:16:48,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120198 conditions, 55479 events. 42343/55479 cut-off events. For 7456/7456 co-relation queries the response was YES. Maximal size of possible extension queue 1388. Compared 304976 event pairs, 14804 based on Foata normal form. 914/48925 useless extension candidates. Maximal degree in co-relation 120192. Up to 37354 conditions per place. [2025-02-08 01:16:49,019 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 85 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2025-02-08 01:16:49,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 92 transitions, 409 flow [2025-02-08 01:16:49,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 01:16:49,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 01:16:49,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2025-02-08 01:16:49,022 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5885416666666666 [2025-02-08 01:16:49,022 INFO L175 Difference]: Start difference. First operand has 58 places, 59 transitions, 154 flow. Second operand 3 states and 113 transitions. [2025-02-08 01:16:49,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 92 transitions, 409 flow [2025-02-08 01:16:49,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 92 transitions, 407 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 01:16:49,034 INFO L231 Difference]: Finished difference. Result has 60 places, 59 transitions, 160 flow [2025-02-08 01:16:49,034 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=60, PETRI_TRANSITIONS=59} [2025-02-08 01:16:49,035 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 0 predicate places. [2025-02-08 01:16:49,035 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 59 transitions, 160 flow [2025-02-08 01:16:49,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:16:49,035 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:16:49,035 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:16:49,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 01:16:49,035 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 01:16:49,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:16:49,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1801630876, now seen corresponding path program 1 times [2025-02-08 01:16:49,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:16:49,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421576541] [2025-02-08 01:16:49,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:16:49,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:16:49,050 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-08 01:16:49,061 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-08 01:16:49,064 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:16:49,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:16:49,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:16:49,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:16:49,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421576541] [2025-02-08 01:16:49,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421576541] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:16:49,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:16:49,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 01:16:49,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240905371] [2025-02-08 01:16:49,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:16:49,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 01:16:49,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:16:49,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 01:16:49,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 01:16:49,161 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2025-02-08 01:16:49,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:16:49,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:16:49,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2025-02-08 01:16:49,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:16:52,176 INFO L124 PetriNetUnfolderBase]: 43382/56839 cut-off events. [2025-02-08 01:16:52,176 INFO L125 PetriNetUnfolderBase]: For 10077/10077 co-relation queries the response was YES. [2025-02-08 01:16:52,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125815 conditions, 56839 events. 43382/56839 cut-off events. For 10077/10077 co-relation queries the response was YES. Maximal size of possible extension queue 1288. Compared 305839 event pairs, 14565 based on Foata normal form. 695/50431 useless extension candidates. Maximal degree in co-relation 125808. Up to 37488 conditions per place. [2025-02-08 01:16:52,434 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 80 selfloop transitions, 2 changer transitions 6/93 dead transitions. [2025-02-08 01:16:52,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 93 transitions, 417 flow [2025-02-08 01:16:52,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 01:16:52,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 01:16:52,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2025-02-08 01:16:52,435 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2025-02-08 01:16:52,435 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 160 flow. Second operand 3 states and 116 transitions. [2025-02-08 01:16:52,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 93 transitions, 417 flow [2025-02-08 01:16:52,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 93 transitions, 415 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 01:16:52,444 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 166 flow [2025-02-08 01:16:52,444 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2025-02-08 01:16:52,445 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 2 predicate places. [2025-02-08 01:16:52,446 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 166 flow [2025-02-08 01:16:52,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:16:52,446 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:16:52,446 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:16:52,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 01:16:52,447 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 01:16:52,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:16:52,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1159560560, now seen corresponding path program 1 times [2025-02-08 01:16:52,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:16:52,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539623415] [2025-02-08 01:16:52,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:16:52,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:16:52,461 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-02-08 01:16:52,471 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-02-08 01:16:52,472 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:16:52,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:16:52,550 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 01:16:52,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:16:52,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539623415] [2025-02-08 01:16:52,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539623415] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:16:52,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:16:52,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 01:16:52,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971056169] [2025-02-08 01:16:52,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:16:52,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 01:16:52,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:16:52,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 01:16:52,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 01:16:52,552 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2025-02-08 01:16:52,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:16:52,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:16:52,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2025-02-08 01:16:52,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:16:54,950 INFO L124 PetriNetUnfolderBase]: 27815/36509 cut-off events. [2025-02-08 01:16:54,950 INFO L125 PetriNetUnfolderBase]: For 9053/9053 co-relation queries the response was YES. [2025-02-08 01:16:55,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81653 conditions, 36509 events. 27815/36509 cut-off events. For 9053/9053 co-relation queries the response was YES. Maximal size of possible extension queue 954. Compared 181981 event pairs, 12783 based on Foata normal form. 312/31781 useless extension candidates. Maximal degree in co-relation 81645. Up to 30323 conditions per place. [2025-02-08 01:16:55,085 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 66 selfloop transitions, 2 changer transitions 8/81 dead transitions. [2025-02-08 01:16:55,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 81 transitions, 366 flow [2025-02-08 01:16:55,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 01:16:55,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 01:16:55,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2025-02-08 01:16:55,086 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2025-02-08 01:16:55,086 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 166 flow. Second operand 3 states and 100 transitions. [2025-02-08 01:16:55,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 81 transitions, 366 flow [2025-02-08 01:16:55,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 81 transitions, 364 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 01:16:55,087 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 176 flow [2025-02-08 01:16:55,088 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2025-02-08 01:16:55,088 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 4 predicate places. [2025-02-08 01:16:55,088 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 176 flow [2025-02-08 01:16:55,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:16:55,088 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:16:55,088 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:16:55,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 01:16:55,089 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 01:16:55,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:16:55,089 INFO L85 PathProgramCache]: Analyzing trace with hash 2055045039, now seen corresponding path program 1 times [2025-02-08 01:16:55,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:16:55,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371706889] [2025-02-08 01:16:55,089 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:16:55,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:16:55,102 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-02-08 01:16:55,120 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-02-08 01:16:55,120 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:16:55,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:16:55,268 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 01:16:55,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:16:55,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371706889] [2025-02-08 01:16:55,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371706889] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:16:55,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:16:55,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 01:16:55,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566570840] [2025-02-08 01:16:55,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:16:55,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 01:16:55,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:16:55,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 01:16:55,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 01:16:55,271 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2025-02-08 01:16:55,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 01:16:55,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:16:55,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2025-02-08 01:16:55,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:16:57,452 INFO L124 PetriNetUnfolderBase]: 32229/42710 cut-off events. [2025-02-08 01:16:57,453 INFO L125 PetriNetUnfolderBase]: For 8865/8865 co-relation queries the response was YES. [2025-02-08 01:16:57,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95701 conditions, 42710 events. 32229/42710 cut-off events. For 8865/8865 co-relation queries the response was YES. Maximal size of possible extension queue 951. Compared 223446 event pairs, 28730 based on Foata normal form. 281/36686 useless extension candidates. Maximal degree in co-relation 95692. Up to 36456 conditions per place. [2025-02-08 01:16:57,626 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 54 selfloop transitions, 2 changer transitions 41/102 dead transitions. [2025-02-08 01:16:57,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 102 transitions, 462 flow [2025-02-08 01:16:57,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:16:57,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:16:57,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 138 transitions. [2025-02-08 01:16:57,627 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43125 [2025-02-08 01:16:57,627 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 176 flow. Second operand 5 states and 138 transitions. [2025-02-08 01:16:57,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 102 transitions, 462 flow [2025-02-08 01:16:57,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 102 transitions, 460 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 01:16:57,630 INFO L231 Difference]: Finished difference. Result has 70 places, 61 transitions, 200 flow [2025-02-08 01:16:57,630 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=200, PETRI_PLACES=70, PETRI_TRANSITIONS=61} [2025-02-08 01:16:57,631 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 10 predicate places. [2025-02-08 01:16:57,631 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 61 transitions, 200 flow [2025-02-08 01:16:57,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 01:16:57,631 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:16:57,631 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:16:57,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 01:16:57,631 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-08 01:16:57,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:16:57,632 INFO L85 PathProgramCache]: Analyzing trace with hash -224670261, now seen corresponding path program 1 times [2025-02-08 01:16:57,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:16:57,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759639950] [2025-02-08 01:16:57,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:16:57,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:16:57,649 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-02-08 01:16:57,675 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-02-08 01:16:57,676 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:16:57,676 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:16:57,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:16:57,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:16:57,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759639950] [2025-02-08 01:16:57,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759639950] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:16:57,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:16:57,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 01:16:57,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353760903] [2025-02-08 01:16:57,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:16:57,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 01:16:57,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:16:57,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 01:16:57,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 01:16:57,822 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2025-02-08 01:16:57,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 01:16:57,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:16:57,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2025-02-08 01:16:57,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:17:00,443 INFO L124 PetriNetUnfolderBase]: 33980/45155 cut-off events. [2025-02-08 01:17:00,443 INFO L125 PetriNetUnfolderBase]: For 9850/9850 co-relation queries the response was YES. [2025-02-08 01:17:00,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101585 conditions, 45155 events. 33980/45155 cut-off events. For 9850/9850 co-relation queries the response was YES. Maximal size of possible extension queue 942. Compared 238637 event pairs, 30389 based on Foata normal form. 98/38666 useless extension candidates. Maximal degree in co-relation 101573. Up to 36454 conditions per place. [2025-02-08 01:17:00,642 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 53 selfloop transitions, 4 changer transitions 47/109 dead transitions. [2025-02-08 01:17:00,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 109 transitions, 552 flow [2025-02-08 01:17:00,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:17:00,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:17:00,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2025-02-08 01:17:00,643 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.453125 [2025-02-08 01:17:00,643 INFO L175 Difference]: Start difference. First operand has 70 places, 61 transitions, 200 flow. Second operand 5 states and 145 transitions. [2025-02-08 01:17:00,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 109 transitions, 552 flow [2025-02-08 01:17:00,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 109 transitions, 512 flow, removed 19 selfloop flow, removed 3 redundant places. [2025-02-08 01:17:00,663 INFO L231 Difference]: Finished difference. Result has 72 places, 62 transitions, 212 flow [2025-02-08 01:17:00,664 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=212, PETRI_PLACES=72, PETRI_TRANSITIONS=62} [2025-02-08 01:17:00,664 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 12 predicate places. [2025-02-08 01:17:00,664 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 62 transitions, 212 flow [2025-02-08 01:17:00,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 01:17:00,664 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:17:00,665 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:17:00,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 01:17:00,665 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-08 01:17:00,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:17:00,665 INFO L85 PathProgramCache]: Analyzing trace with hash 669646129, now seen corresponding path program 1 times [2025-02-08 01:17:00,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:17:00,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041232080] [2025-02-08 01:17:00,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:17:00,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:17:00,676 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-02-08 01:17:00,691 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-02-08 01:17:00,691 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:17:00,691 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:17:00,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 01:17:00,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:17:00,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041232080] [2025-02-08 01:17:00,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041232080] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:17:00,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:17:00,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 01:17:00,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935052190] [2025-02-08 01:17:00,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:17:00,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 01:17:00,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:17:00,821 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 01:17:00,821 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 01:17:00,822 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2025-02-08 01:17:00,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 62 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:17:00,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:17:00,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2025-02-08 01:17:00,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand