./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix046.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 735b3cc8 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/mix046.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 f69f777f524a62a415fc7cacc9442c44e05883e29c36815b4e0d58199826b331 --- Real Ultimate output --- This is Ultimate 0.3.0-?-735b3cc-m [2025-03-14 00:51:06,513 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-14 00:51:06,568 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-14 00:51:06,572 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-14 00:51:06,574 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-14 00:51:06,592 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-14 00:51:06,593 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-14 00:51:06,593 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-14 00:51:06,593 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-14 00:51:06,593 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-14 00:51:06,593 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-14 00:51:06,593 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-14 00:51:06,593 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-14 00:51:06,593 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-14 00:51:06,594 INFO L153 SettingsManager]: * Use SBE=true [2025-03-14 00:51:06,594 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-14 00:51:06,594 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-14 00:51:06,594 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-14 00:51:06,594 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-14 00:51:06,594 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-14 00:51:06,594 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-14 00:51:06,594 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-14 00:51:06,594 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-14 00:51:06,594 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-14 00:51:06,594 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-14 00:51:06,594 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-14 00:51:06,594 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-14 00:51:06,594 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-14 00:51:06,594 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-14 00:51:06,594 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-14 00:51:06,594 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-14 00:51:06,594 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-14 00:51:06,594 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 00:51:06,595 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-14 00:51:06,595 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-14 00:51:06,595 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-14 00:51:06,595 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-14 00:51:06,595 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-14 00:51:06,595 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-14 00:51:06,595 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-14 00:51:06,595 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-14 00:51:06,595 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-14 00:51:06,595 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-14 00:51:06,595 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/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 -> f69f777f524a62a415fc7cacc9442c44e05883e29c36815b4e0d58199826b331 [2025-03-14 00:51:06,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-14 00:51:06,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-14 00:51:06,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-14 00:51:06,836 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-14 00:51:06,837 INFO L274 PluginConnector]: CDTParser initialized [2025-03-14 00:51:06,838 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix046.opt.i [2025-03-14 00:51:07,990 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/426cca67b/ea76385ccbf84257b8240eef0fa71623/FLAG4294479c8 [2025-03-14 00:51:08,279 INFO L384 CDTParser]: Found 1 translation units. [2025-03-14 00:51:08,280 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix046.opt.i [2025-03-14 00:51:08,295 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/426cca67b/ea76385ccbf84257b8240eef0fa71623/FLAG4294479c8 [2025-03-14 00:51:08,311 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/426cca67b/ea76385ccbf84257b8240eef0fa71623 [2025-03-14 00:51:08,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-14 00:51:08,315 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-14 00:51:08,317 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-14 00:51:08,317 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-14 00:51:08,320 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-14 00:51:08,321 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 12:51:08" (1/1) ... [2025-03-14 00:51:08,322 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bb4e94f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:51:08, skipping insertion in model container [2025-03-14 00:51:08,323 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 12:51:08" (1/1) ... [2025-03-14 00:51:08,355 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-14 00:51:08,477 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix046.opt.i[944,957] [2025-03-14 00:51:08,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 00:51:08,602 INFO L200 MainTranslator]: Completed pre-run [2025-03-14 00:51:08,609 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix046.opt.i[944,957] [2025-03-14 00:51:08,670 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 00:51:08,701 INFO L204 MainTranslator]: Completed translation [2025-03-14 00:51:08,702 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:51:08 WrapperNode [2025-03-14 00:51:08,702 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-14 00:51:08,703 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-14 00:51:08,704 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-14 00:51:08,704 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-14 00:51:08,709 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:51:08" (1/1) ... [2025-03-14 00:51:08,724 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:51:08" (1/1) ... [2025-03-14 00:51:08,752 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 153 [2025-03-14 00:51:08,752 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-14 00:51:08,753 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-14 00:51:08,753 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-14 00:51:08,753 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-14 00:51:08,762 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:51:08" (1/1) ... [2025-03-14 00:51:08,762 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:51:08" (1/1) ... [2025-03-14 00:51:08,764 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:51:08" (1/1) ... [2025-03-14 00:51:08,785 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]. [2025-03-14 00:51:08,785 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:51:08" (1/1) ... [2025-03-14 00:51:08,785 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:51:08" (1/1) ... [2025-03-14 00:51:08,792 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:51:08" (1/1) ... [2025-03-14 00:51:08,796 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:51:08" (1/1) ... [2025-03-14 00:51:08,798 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:51:08" (1/1) ... [2025-03-14 00:51:08,802 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:51:08" (1/1) ... [2025-03-14 00:51:08,804 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-14 00:51:08,805 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-14 00:51:08,805 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-14 00:51:08,806 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-14 00:51:08,806 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:51:08" (1/1) ... [2025-03-14 00:51:08,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 00:51:08,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 00:51:08,830 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-14 00:51:08,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-14 00:51:08,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-14 00:51:08,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-14 00:51:08,851 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-14 00:51:08,851 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-14 00:51:08,851 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-14 00:51:08,851 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-14 00:51:08,852 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-14 00:51:08,852 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-14 00:51:08,852 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-03-14 00:51:08,852 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-03-14 00:51:08,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-14 00:51:08,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-14 00:51:08,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-14 00:51:08,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-14 00:51:08,853 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-14 00:51:08,958 INFO L256 CfgBuilder]: Building ICFG [2025-03-14 00:51:08,960 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-14 00:51:09,246 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-14 00:51:09,247 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-14 00:51:09,248 INFO L318 CfgBuilder]: Performing block encoding [2025-03-14 00:51:09,473 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-14 00:51:09,474 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 12:51:09 BoogieIcfgContainer [2025-03-14 00:51:09,474 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-14 00:51:09,475 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-14 00:51:09,476 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-14 00:51:09,479 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-14 00:51:09,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.03 12:51:08" (1/3) ... [2025-03-14 00:51:09,480 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49629031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 12:51:09, skipping insertion in model container [2025-03-14 00:51:09,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:51:08" (2/3) ... [2025-03-14 00:51:09,481 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49629031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 12:51:09, skipping insertion in model container [2025-03-14 00:51:09,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 12:51:09" (3/3) ... [2025-03-14 00:51:09,483 INFO L128 eAbstractionObserver]: Analyzing ICFG mix046.opt.i [2025-03-14 00:51:09,492 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-14 00:51:09,494 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix046.opt.i that has 5 procedures, 50 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-14 00:51:09,495 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-14 00:51:09,540 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 00:51:09,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2025-03-14 00:51:09,598 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2025-03-14 00:51:09,602 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 00:51:09,607 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 99 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. [2025-03-14 00:51:09,607 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2025-03-14 00:51:09,610 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2025-03-14 00:51:09,619 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 00:51:09,630 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;@2f6e80c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 00:51:09,630 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-03-14 00:51:09,641 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 00:51:09,645 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2025-03-14 00:51:09,646 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 00:51:09,646 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:51:09,646 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:51:09,647 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-14 00:51:09,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:51:09,654 INFO L85 PathProgramCache]: Analyzing trace with hash -909325538, now seen corresponding path program 1 times [2025-03-14 00:51:09,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:51:09,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980414334] [2025-03-14 00:51:09,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:51:09,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:51:09,731 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-14 00:51:09,768 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-14 00:51:09,770 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:51:09,770 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:51:10,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:51:10,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:51:10,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980414334] [2025-03-14 00:51:10,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980414334] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:51:10,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:51:10,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-14 00:51:10,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711212123] [2025-03-14 00:51:10,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:51:10,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 00:51:10,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:51:10,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 00:51:10,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 00:51:10,124 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2025-03-14 00:51:10,125 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) [2025-03-14 00:51:10,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:51:10,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2025-03-14 00:51:10,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:51:13,688 INFO L124 PetriNetUnfolderBase]: 46139/61167 cut-off events. [2025-03-14 00:51:13,688 INFO L125 PetriNetUnfolderBase]: For 236/236 co-relation queries the response was YES. [2025-03-14 00:51:13,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122171 conditions, 61167 events. 46139/61167 cut-off events. For 236/236 co-relation queries the response was YES. Maximal size of possible extension queue 1751. Compared 353327 event pairs, 5315 based on Foata normal form. 1728/62643 useless extension candidates. Maximal degree in co-relation 122159. Up to 52921 conditions per place. [2025-03-14 00:51:14,028 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 55 selfloop transitions, 2 changer transitions 2/66 dead transitions. [2025-03-14 00:51:14,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 66 transitions, 262 flow [2025-03-14 00:51:14,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 00:51:14,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 00:51:14,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2025-03-14 00:51:14,042 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2025-03-14 00:51:14,043 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 95 transitions. [2025-03-14 00:51:14,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 66 transitions, 262 flow [2025-03-14 00:51:14,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 66 transitions, 258 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-14 00:51:14,051 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2025-03-14 00:51:14,052 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} [2025-03-14 00:51:14,054 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2025-03-14 00:51:14,054 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2025-03-14 00:51:14,055 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) [2025-03-14 00:51:14,055 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:51:14,055 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:51:14,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-14 00:51:14,055 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)] === [2025-03-14 00:51:14,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:51:14,056 INFO L85 PathProgramCache]: Analyzing trace with hash -295297183, now seen corresponding path program 1 times [2025-03-14 00:51:14,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:51:14,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361156632] [2025-03-14 00:51:14,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:51:14,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:51:14,075 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-14 00:51:14,124 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-14 00:51:14,124 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:51:14,124 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:51:14,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:51:14,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:51:14,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361156632] [2025-03-14 00:51:14,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361156632] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:51:14,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:51:14,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 00:51:14,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062618462] [2025-03-14 00:51:14,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:51:14,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-14 00:51:14,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:51:14,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-14 00:51:14,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-14 00:51:14,659 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-03-14 00:51:14,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2025-03-14 00:51:14,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:51:14,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-03-14 00:51:14,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:51:20,293 INFO L124 PetriNetUnfolderBase]: 85667/114087 cut-off events. [2025-03-14 00:51:20,293 INFO L125 PetriNetUnfolderBase]: For 1728/1728 co-relation queries the response was YES. [2025-03-14 00:51:20,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229305 conditions, 114087 events. 85667/114087 cut-off events. For 1728/1728 co-relation queries the response was YES. Maximal size of possible extension queue 2988. Compared 700392 event pairs, 13415 based on Foata normal form. 0/112251 useless extension candidates. Maximal degree in co-relation 229295. Up to 41617 conditions per place. [2025-03-14 00:51:20,805 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 70 selfloop transitions, 9 changer transitions 154/238 dead transitions. [2025-03-14 00:51:20,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 238 transitions, 958 flow [2025-03-14 00:51:20,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-14 00:51:20,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-14 00:51:20,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 344 transitions. [2025-03-14 00:51:20,811 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5733333333333334 [2025-03-14 00:51:20,812 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 12 states and 344 transitions. [2025-03-14 00:51:20,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 238 transitions, 958 flow [2025-03-14 00:51:20,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 238 transitions, 950 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-14 00:51:20,829 INFO L231 Difference]: Finished difference. Result has 74 places, 49 transitions, 208 flow [2025-03-14 00:51:20,829 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=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=208, PETRI_PLACES=74, PETRI_TRANSITIONS=49} [2025-03-14 00:51:20,830 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 16 predicate places. [2025-03-14 00:51:20,830 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 49 transitions, 208 flow [2025-03-14 00:51:20,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2025-03-14 00:51:20,830 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:51:20,830 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:51:20,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-14 00:51:20,831 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)] === [2025-03-14 00:51:20,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:51:20,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1596789858, now seen corresponding path program 1 times [2025-03-14 00:51:20,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:51:20,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747527826] [2025-03-14 00:51:20,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:51:20,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:51:20,845 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-14 00:51:20,864 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-14 00:51:20,865 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:51:20,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:51:21,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:51:21,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:51:21,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747527826] [2025-03-14 00:51:21,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747527826] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:51:21,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:51:21,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 00:51:21,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484053719] [2025-03-14 00:51:21,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:51:21,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-14 00:51:21,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:51:21,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-14 00:51:21,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-14 00:51:21,422 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-03-14 00:51:21,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 49 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 00:51:21,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:51:21,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-03-14 00:51:21,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:51:27,239 INFO L124 PetriNetUnfolderBase]: 72167/96839 cut-off events. [2025-03-14 00:51:27,240 INFO L125 PetriNetUnfolderBase]: For 143469/143469 co-relation queries the response was YES. [2025-03-14 00:51:27,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285272 conditions, 96839 events. 72167/96839 cut-off events. For 143469/143469 co-relation queries the response was YES. Maximal size of possible extension queue 2380. Compared 601460 event pairs, 7327 based on Foata normal form. 1792/98624 useless extension candidates. Maximal degree in co-relation 285251. Up to 55533 conditions per place. [2025-03-14 00:51:27,920 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 78 selfloop transitions, 18 changer transitions 100/201 dead transitions. [2025-03-14 00:51:27,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 201 transitions, 1226 flow [2025-03-14 00:51:27,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-14 00:51:27,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-14 00:51:27,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 283 transitions. [2025-03-14 00:51:27,923 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.566 [2025-03-14 00:51:27,923 INFO L175 Difference]: Start difference. First operand has 74 places, 49 transitions, 208 flow. Second operand 10 states and 283 transitions. [2025-03-14 00:51:27,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 201 transitions, 1226 flow [2025-03-14 00:51:30,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 201 transitions, 1130 flow, removed 46 selfloop flow, removed 5 redundant places. [2025-03-14 00:51:30,873 INFO L231 Difference]: Finished difference. Result has 77 places, 58 transitions, 325 flow [2025-03-14 00:51:30,873 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=325, PETRI_PLACES=77, PETRI_TRANSITIONS=58} [2025-03-14 00:51:30,874 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 19 predicate places. [2025-03-14 00:51:30,875 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 58 transitions, 325 flow [2025-03-14 00:51:30,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 00:51:30,875 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:51:30,875 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:51:30,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-14 00:51:30,875 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)] === [2025-03-14 00:51:30,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:51:30,876 INFO L85 PathProgramCache]: Analyzing trace with hash -273275001, now seen corresponding path program 1 times [2025-03-14 00:51:30,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:51:30,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121421814] [2025-03-14 00:51:30,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:51:30,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:51:30,886 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-14 00:51:30,918 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 00:51:30,919 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:51:30,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:51:31,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:51:31,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:51:31,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121421814] [2025-03-14 00:51:31,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121421814] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:51:31,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:51:31,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-14 00:51:31,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922923650] [2025-03-14 00:51:31,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:51:31,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-14 00:51:31,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:51:31,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-14 00:51:31,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-14 00:51:31,614 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-03-14 00:51:31,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 58 transitions, 325 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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) [2025-03-14 00:51:31,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:51:31,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-03-14 00:51:31,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:51:38,451 INFO L124 PetriNetUnfolderBase]: 76667/103290 cut-off events. [2025-03-14 00:51:38,452 INFO L125 PetriNetUnfolderBase]: For 193497/193497 co-relation queries the response was YES. [2025-03-14 00:51:38,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334274 conditions, 103290 events. 76667/103290 cut-off events. For 193497/193497 co-relation queries the response was YES. Maximal size of possible extension queue 2476. Compared 638131 event pairs, 18007 based on Foata normal form. 1620/104895 useless extension candidates. Maximal degree in co-relation 334248. Up to 72985 conditions per place. [2025-03-14 00:51:39,274 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 123 selfloop transitions, 17 changer transitions 119/264 dead transitions. [2025-03-14 00:51:39,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 264 transitions, 2010 flow [2025-03-14 00:51:39,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-14 00:51:39,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-14 00:51:39,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 294 transitions. [2025-03-14 00:51:39,275 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5345454545454545 [2025-03-14 00:51:39,275 INFO L175 Difference]: Start difference. First operand has 77 places, 58 transitions, 325 flow. Second operand 11 states and 294 transitions. [2025-03-14 00:51:39,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 264 transitions, 2010 flow [2025-03-14 00:51:45,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 264 transitions, 1952 flow, removed 29 selfloop flow, removed 8 redundant places. [2025-03-14 00:51:45,455 INFO L231 Difference]: Finished difference. Result has 82 places, 74 transitions, 521 flow [2025-03-14 00:51:45,455 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=521, PETRI_PLACES=82, PETRI_TRANSITIONS=74} [2025-03-14 00:51:45,456 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 24 predicate places. [2025-03-14 00:51:45,456 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 74 transitions, 521 flow [2025-03-14 00:51:45,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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) [2025-03-14 00:51:45,456 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:51:45,456 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:51:45,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-14 00:51:45,456 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-14 00:51:45,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:51:45,457 INFO L85 PathProgramCache]: Analyzing trace with hash -135253211, now seen corresponding path program 2 times [2025-03-14 00:51:45,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:51:45,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9845641] [2025-03-14 00:51:45,457 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 00:51:45,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:51:45,464 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 1 equivalence classes. [2025-03-14 00:51:45,485 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-14 00:51:45,485 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 00:51:45,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:51:46,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:51:46,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:51:46,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9845641] [2025-03-14 00:51:46,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9845641] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:51:46,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:51:46,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-14 00:51:46,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632747275] [2025-03-14 00:51:46,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:51:46,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-14 00:51:46,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:51:46,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-14 00:51:46,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-14 00:51:46,120 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-03-14 00:51:46,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 74 transitions, 521 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 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) [2025-03-14 00:51:46,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:51:46,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-03-14 00:51:46,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand