./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix014.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/mix014.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 615dc0a4278e77a094a63ed4629507c6f8d1cda73abba57cd69e8912d83fe5fd --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 00:59:06,476 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 00:59:06,521 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 00:59:06,527 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 00:59:06,527 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 00:59:06,540 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 00:59:06,540 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 00:59:06,541 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 00:59:06,541 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 00:59:06,541 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 00:59:06,541 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 00:59:06,541 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 00:59:06,541 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 00:59:06,541 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 00:59:06,541 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 00:59:06,541 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 00:59:06,541 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 00:59:06,541 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 00:59:06,541 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 00:59:06,542 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 00:59:06,542 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 00:59:06,542 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 00:59:06,542 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 00:59:06,542 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 00:59:06,542 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 00:59:06,542 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 00:59:06,542 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 00:59:06,542 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 00:59:06,542 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 00:59:06,542 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 00:59:06,542 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 00:59:06,542 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 00:59:06,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 00:59:06,542 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 00:59:06,542 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 00:59:06,542 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 00:59:06,542 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 00:59:06,542 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 00:59:06,543 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 00:59:06,543 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 00:59:06,543 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 00:59:06,543 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 00:59:06,543 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 00:59:06,543 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 -> 615dc0a4278e77a094a63ed4629507c6f8d1cda73abba57cd69e8912d83fe5fd [2025-02-08 00:59:06,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 00:59:06,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 00:59:06,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 00:59:06,761 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 00:59:06,762 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 00:59:06,762 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix014.opt.i [2025-02-08 00:59:07,811 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/94f3a20f6/6d2bb69f097444a1bb840ec5379ca19f/FLAG509fcab60 [2025-02-08 00:59:08,168 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 00:59:08,169 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix014.opt.i [2025-02-08 00:59:08,177 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/94f3a20f6/6d2bb69f097444a1bb840ec5379ca19f/FLAG509fcab60 [2025-02-08 00:59:08,205 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/94f3a20f6/6d2bb69f097444a1bb840ec5379ca19f [2025-02-08 00:59:08,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 00:59:08,211 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 00:59:08,213 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 00:59:08,213 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 00:59:08,218 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 00:59:08,220 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 12:59:08" (1/1) ... [2025-02-08 00:59:08,222 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58710a40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:59:08, skipping insertion in model container [2025-02-08 00:59:08,222 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 12:59:08" (1/1) ... [2025-02-08 00:59:08,257 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 00:59:08,342 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/mix014.opt.i[944,957] [2025-02-08 00:59:08,447 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 00:59:08,453 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 00:59:08,463 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/mix014.opt.i[944,957] [2025-02-08 00:59:08,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 00:59:08,526 INFO L204 MainTranslator]: Completed translation [2025-02-08 00:59:08,526 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:59:08 WrapperNode [2025-02-08 00:59:08,526 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 00:59:08,527 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 00:59:08,527 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 00:59:08,528 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 00:59:08,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:59:08" (1/1) ... [2025-02-08 00:59:08,540 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:59:08" (1/1) ... [2025-02-08 00:59:08,556 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 151 [2025-02-08 00:59:08,556 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 00:59:08,557 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 00:59:08,557 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 00:59:08,557 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 00:59:08,562 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:59:08" (1/1) ... [2025-02-08 00:59:08,562 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:59:08" (1/1) ... [2025-02-08 00:59:08,565 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:59:08" (1/1) ... [2025-02-08 00:59:08,573 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 00:59:08,574 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:59:08" (1/1) ... [2025-02-08 00:59:08,574 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:59:08" (1/1) ... [2025-02-08 00:59:08,579 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:59:08" (1/1) ... [2025-02-08 00:59:08,579 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:59:08" (1/1) ... [2025-02-08 00:59:08,581 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:59:08" (1/1) ... [2025-02-08 00:59:08,581 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:59:08" (1/1) ... [2025-02-08 00:59:08,583 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 00:59:08,584 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 00:59:08,584 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 00:59:08,584 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 00:59:08,584 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:59:08" (1/1) ... [2025-02-08 00:59:08,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 00:59:08,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 00:59:08,611 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 00:59:08,613 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 00:59:08,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 00:59:08,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 00:59:08,628 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-02-08 00:59:08,628 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-02-08 00:59:08,628 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-02-08 00:59:08,628 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-02-08 00:59:08,628 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-02-08 00:59:08,629 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-02-08 00:59:08,629 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-02-08 00:59:08,629 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-02-08 00:59:08,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 00:59:08,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 00:59:08,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 00:59:08,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 00:59:08,630 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 00:59:08,713 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 00:59:08,714 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 00:59:08,941 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 00:59:08,941 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 00:59:09,145 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 00:59:09,145 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 00:59:09,146 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 12:59:09 BoogieIcfgContainer [2025-02-08 00:59:09,146 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 00:59:09,148 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 00:59:09,148 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 00:59:09,151 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 00:59:09,151 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 12:59:08" (1/3) ... [2025-02-08 00:59:09,152 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@462df69e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 12:59:09, skipping insertion in model container [2025-02-08 00:59:09,152 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:59:08" (2/3) ... [2025-02-08 00:59:09,153 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@462df69e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 12:59:09, skipping insertion in model container [2025-02-08 00:59:09,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 12:59:09" (3/3) ... [2025-02-08 00:59:09,154 INFO L128 eAbstractionObserver]: Analyzing ICFG mix014.opt.i [2025-02-08 00:59:09,167 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 00:59:09,168 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix014.opt.i that has 5 procedures, 50 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-02-08 00:59:09,168 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 00:59:09,222 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 00:59:09,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2025-02-08 00:59:09,273 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2025-02-08 00:59:09,275 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 00:59:09,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 101 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2025-02-08 00:59:09,278 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2025-02-08 00:59:09,280 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2025-02-08 00:59:09,285 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 00:59:09,292 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;@15eba003, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 00:59:09,292 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-02-08 00:59:09,302 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 00:59:09,303 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2025-02-08 00:59:09,303 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 00:59:09,303 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 00:59:09,303 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 00:59:09,304 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-08 00:59:09,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 00:59:09,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1914724953, now seen corresponding path program 1 times [2025-02-08 00:59:09,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 00:59:09,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043957779] [2025-02-08 00:59:09,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 00:59:09,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 00:59:09,366 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 00:59:09,397 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 00:59:09,398 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 00:59:09,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:59:09,771 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 00:59:09,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 00:59:09,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043957779] [2025-02-08 00:59:09,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043957779] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 00:59:09,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 00:59:09,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 00:59:09,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510205734] [2025-02-08 00:59:09,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 00:59:09,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 00:59:09,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 00:59:09,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 00:59:09,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 00:59:09,797 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2025-02-08 00:59:09,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 00:59:09,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 00:59:09,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2025-02-08 00:59:09,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 00:59:14,327 INFO L124 PetriNetUnfolderBase]: 47373/62901 cut-off events. [2025-02-08 00:59:14,328 INFO L125 PetriNetUnfolderBase]: For 262/262 co-relation queries the response was YES. [2025-02-08 00:59:14,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125595 conditions, 62901 events. 47373/62901 cut-off events. For 262/262 co-relation queries the response was YES. Maximal size of possible extension queue 1840. Compared 365611 event pairs, 6261 based on Foata normal form. 1764/64338 useless extension candidates. Maximal degree in co-relation 125583. Up to 53209 conditions per place. [2025-02-08 00:59:14,755 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 56 selfloop transitions, 2 changer transitions 2/67 dead transitions. [2025-02-08 00:59:14,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 67 transitions, 266 flow [2025-02-08 00:59:14,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 00:59:14,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 00:59:14,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2025-02-08 00:59:14,764 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.64 [2025-02-08 00:59:14,765 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 96 transitions. [2025-02-08 00:59:14,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 67 transitions, 266 flow [2025-02-08 00:59:14,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 67 transitions, 262 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 00:59:14,776 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2025-02-08 00:59:14,778 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2025-02-08 00:59:14,780 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2025-02-08 00:59:14,780 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2025-02-08 00:59:14,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 00:59:14,781 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 00:59:14,781 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 00:59:14,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 00:59:14,781 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-08 00:59:14,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 00:59:14,782 INFO L85 PathProgramCache]: Analyzing trace with hash -539111042, now seen corresponding path program 1 times [2025-02-08 00:59:14,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 00:59:14,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844398811] [2025-02-08 00:59:14,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 00:59:14,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 00:59:14,795 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 00:59:14,843 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 00:59:14,843 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 00:59:14,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:59:15,054 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 00:59:15,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 00:59:15,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844398811] [2025-02-08 00:59:15,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844398811] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 00:59:15,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 00:59:15,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 00:59:15,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055531659] [2025-02-08 00:59:15,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 00:59:15,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 00:59:15,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 00:59:15,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 00:59:15,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 00:59:15,059 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-02-08 00:59:15,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 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 00:59:15,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 00:59:15,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-02-08 00:59:15,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 00:59:23,598 INFO L124 PetriNetUnfolderBase]: 113469/151345 cut-off events. [2025-02-08 00:59:23,599 INFO L125 PetriNetUnfolderBase]: For 4896/4896 co-relation queries the response was YES. [2025-02-08 00:59:23,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306645 conditions, 151345 events. 113469/151345 cut-off events. For 4896/4896 co-relation queries the response was YES. Maximal size of possible extension queue 4302. Compared 986330 event pairs, 34855 based on Foata normal form. 0/148265 useless extension candidates. Maximal degree in co-relation 306635. Up to 67133 conditions per place. [2025-02-08 00:59:24,330 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 61 selfloop transitions, 8 changer transitions 137/211 dead transitions. [2025-02-08 00:59:24,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 211 transitions, 864 flow [2025-02-08 00:59:24,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 00:59:24,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-08 00:59:24,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 289 transitions. [2025-02-08 00:59:24,332 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6422222222222222 [2025-02-08 00:59:24,332 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 9 states and 289 transitions. [2025-02-08 00:59:24,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 211 transitions, 864 flow [2025-02-08 00:59:24,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 211 transitions, 846 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 00:59:24,581 INFO L231 Difference]: Finished difference. Result has 68 places, 49 transitions, 204 flow [2025-02-08 00:59:24,582 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=204, PETRI_PLACES=68, PETRI_TRANSITIONS=49} [2025-02-08 00:59:24,582 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2025-02-08 00:59:24,582 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 49 transitions, 204 flow [2025-02-08 00:59:24,582 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 00:59:24,582 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 00:59:24,582 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 00:59:24,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 00:59:24,583 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-08 00:59:24,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 00:59:24,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1541242369, now seen corresponding path program 1 times [2025-02-08 00:59:24,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 00:59:24,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667360550] [2025-02-08 00:59:24,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 00:59:24,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 00:59:24,596 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 00:59:24,613 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 00:59:24,614 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 00:59:24,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:59:24,824 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 00:59:24,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 00:59:24,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667360550] [2025-02-08 00:59:24,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667360550] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 00:59:24,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 00:59:24,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 00:59:24,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775004568] [2025-02-08 00:59:24,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 00:59:24,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 00:59:24,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 00:59:24,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 00:59:24,826 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 00:59:24,829 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-02-08 00:59:24,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 49 transitions, 204 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 00:59:24,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 00:59:24,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-02-08 00:59:24,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 00:59:32,578 INFO L124 PetriNetUnfolderBase]: 84493/113301 cut-off events. [2025-02-08 00:59:32,578 INFO L125 PetriNetUnfolderBase]: For 130706/130708 co-relation queries the response was YES. [2025-02-08 00:59:33,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320861 conditions, 113301 events. 84493/113301 cut-off events. For 130706/130708 co-relation queries the response was YES. Maximal size of possible extension queue 3073. Compared 712441 event pairs, 15417 based on Foata normal form. 2800/116020 useless extension candidates. Maximal degree in co-relation 320843. Up to 48049 conditions per place. [2025-02-08 00:59:33,470 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 78 selfloop transitions, 9 changer transitions 126/218 dead transitions. [2025-02-08 00:59:33,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 218 transitions, 1298 flow [2025-02-08 00:59:33,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 00:59:33,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 00:59:33,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 290 transitions. [2025-02-08 00:59:33,474 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.58 [2025-02-08 00:59:33,474 INFO L175 Difference]: Start difference. First operand has 68 places, 49 transitions, 204 flow. Second operand 10 states and 290 transitions. [2025-02-08 00:59:33,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 218 transitions, 1298 flow [2025-02-08 00:59:35,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 218 transitions, 1148 flow, removed 38 selfloop flow, removed 4 redundant places. [2025-02-08 00:59:35,157 INFO L231 Difference]: Finished difference. Result has 75 places, 54 transitions, 270 flow [2025-02-08 00:59:35,157 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=270, PETRI_PLACES=75, PETRI_TRANSITIONS=54} [2025-02-08 00:59:35,162 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 17 predicate places. [2025-02-08 00:59:35,162 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 54 transitions, 270 flow [2025-02-08 00:59:35,162 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 00:59:35,162 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 00:59:35,162 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 00:59:35,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 00:59:35,162 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-08 00:59:35,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 00:59:35,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1578490956, now seen corresponding path program 1 times [2025-02-08 00:59:35,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 00:59:35,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84829061] [2025-02-08 00:59:35,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 00:59:35,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 00:59:35,180 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 00:59:35,203 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 00:59:35,206 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 00:59:35,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:59:35,413 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 00:59:35,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 00:59:35,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84829061] [2025-02-08 00:59:35,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84829061] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 00:59:35,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 00:59:35,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 00:59:35,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533091645] [2025-02-08 00:59:35,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 00:59:35,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 00:59:35,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 00:59:35,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 00:59:35,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 00:59:35,417 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-02-08 00:59:35,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 54 transitions, 270 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 00:59:35,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 00:59:35,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-02-08 00:59:35,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand