./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix053.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed 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/mix053.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 998817f829569afa1d1e3eda89c2594d280c8ae81957c207a6b68804966cf3a6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 17:19:30,648 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 17:19:30,703 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 17:19:30,708 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 17:19:30,708 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 17:19:30,735 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 17:19:30,736 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 17:19:30,736 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 17:19:30,736 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 17:19:30,738 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 17:19:30,738 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 17:19:30,739 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 17:19:30,739 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 17:19:30,739 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 17:19:30,739 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 17:19:30,739 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 17:19:30,739 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 17:19:30,739 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 17:19:30,739 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 17:19:30,739 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 17:19:30,739 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 17:19:30,739 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 17:19:30,739 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 17:19:30,739 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 17:19:30,739 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 17:19:30,739 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 17:19:30,739 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 17:19:30,740 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 17:19:30,740 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 17:19:30,740 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 17:19:30,740 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 17:19:30,740 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 17:19:30,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:19:30,740 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 17:19:30,740 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 17:19:30,740 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 17:19:30,740 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 17:19:30,740 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 17:19:30,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 17:19:30,740 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 17:19:30,740 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 17:19:30,740 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 17:19:30,740 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 17:19:30,740 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 -> 998817f829569afa1d1e3eda89c2594d280c8ae81957c207a6b68804966cf3a6 [2025-03-08 17:19:30,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 17:19:30,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 17:19:30,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 17:19:30,971 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 17:19:30,972 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 17:19:30,973 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix053.opt.i [2025-03-08 17:19:32,077 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d336b0916/58dad890bad844b78827dc3e88ee1251/FLAG766133e9d [2025-03-08 17:19:32,403 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 17:19:32,403 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix053.opt.i [2025-03-08 17:19:32,416 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d336b0916/58dad890bad844b78827dc3e88ee1251/FLAG766133e9d [2025-03-08 17:19:32,433 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d336b0916/58dad890bad844b78827dc3e88ee1251 [2025-03-08 17:19:32,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 17:19:32,435 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 17:19:32,436 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 17:19:32,436 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 17:19:32,439 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 17:19:32,440 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:19:32" (1/1) ... [2025-03-08 17:19:32,440 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@122c5c91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:19:32, skipping insertion in model container [2025-03-08 17:19:32,440 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:19:32" (1/1) ... [2025-03-08 17:19:32,466 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 17:19:32,572 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/mix053.opt.i[944,957] [2025-03-08 17:19:32,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:19:32,701 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 17:19:32,712 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/mix053.opt.i[944,957] [2025-03-08 17:19:32,760 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:19:32,794 INFO L204 MainTranslator]: Completed translation [2025-03-08 17:19:32,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:19:32 WrapperNode [2025-03-08 17:19:32,795 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 17:19:32,796 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 17:19:32,796 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 17:19:32,796 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 17:19:32,801 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:19:32" (1/1) ... [2025-03-08 17:19:32,814 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:19:32" (1/1) ... [2025-03-08 17:19:32,833 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 126 [2025-03-08 17:19:32,833 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 17:19:32,834 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 17:19:32,834 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 17:19:32,834 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 17:19:32,840 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:19:32" (1/1) ... [2025-03-08 17:19:32,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:19:32" (1/1) ... [2025-03-08 17:19:32,842 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:19:32" (1/1) ... [2025-03-08 17:19:32,864 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]. [2025-03-08 17:19:32,865 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:19:32" (1/1) ... [2025-03-08 17:19:32,865 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:19:32" (1/1) ... [2025-03-08 17:19:32,870 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:19:32" (1/1) ... [2025-03-08 17:19:32,872 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:19:32" (1/1) ... [2025-03-08 17:19:32,873 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:19:32" (1/1) ... [2025-03-08 17:19:32,874 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:19:32" (1/1) ... [2025-03-08 17:19:32,877 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 17:19:32,877 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 17:19:32,877 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 17:19:32,877 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 17:19:32,878 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:19:32" (1/1) ... [2025-03-08 17:19:32,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:19:32,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:19:32,907 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) [2025-03-08 17:19:32,909 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 [2025-03-08 17:19:32,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-08 17:19:32,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 17:19:32,926 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-08 17:19:32,926 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-08 17:19:32,926 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-08 17:19:32,926 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-08 17:19:32,926 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-08 17:19:32,926 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-08 17:19:32,926 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-03-08 17:19:32,926 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-03-08 17:19:32,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 17:19:32,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-08 17:19:32,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 17:19:32,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 17:19:32,927 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-08 17:19:33,020 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 17:19:33,022 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 17:19:33,227 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-08 17:19:33,227 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 17:19:33,371 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 17:19:33,371 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 17:19:33,371 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:19:33 BoogieIcfgContainer [2025-03-08 17:19:33,371 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 17:19:33,373 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 17:19:33,374 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 17:19:33,377 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 17:19:33,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:19:32" (1/3) ... [2025-03-08 17:19:33,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30e7ea81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:19:33, skipping insertion in model container [2025-03-08 17:19:33,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:19:32" (2/3) ... [2025-03-08 17:19:33,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30e7ea81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:19:33, skipping insertion in model container [2025-03-08 17:19:33,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:19:33" (3/3) ... [2025-03-08 17:19:33,379 INFO L128 eAbstractionObserver]: Analyzing ICFG mix053.opt.i [2025-03-08 17:19:33,390 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 17:19:33,392 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix053.opt.i that has 5 procedures, 48 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-08 17:19:33,392 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-08 17:19:33,440 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-08 17:19:33,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 48 transitions, 112 flow [2025-03-08 17:19:33,521 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2025-03-08 17:19:33,523 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-08 17:19:33,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 90 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2025-03-08 17:19:33,526 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 48 transitions, 112 flow [2025-03-08 17:19:33,530 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 44 transitions, 100 flow [2025-03-08 17:19:33,538 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 17:19:33,550 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;@7cb36505, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 17:19:33,550 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-03-08 17:19:33,557 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-08 17:19:33,557 INFO L124 PetriNetUnfolderBase]: 0/24 cut-off events. [2025-03-08 17:19:33,557 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-08 17:19:33,557 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:19:33,558 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:19:33,558 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:19:33,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:19:33,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1825151417, now seen corresponding path program 1 times [2025-03-08 17:19:33,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:19:33,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702927463] [2025-03-08 17:19:33,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:19:33,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:19:33,631 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-08 17:19:33,670 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-08 17:19:33,674 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:19:33,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:19:33,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:19:33,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:19:33,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702927463] [2025-03-08 17:19:33,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702927463] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:19:33,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:19:33,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-08 17:19:33,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333675979] [2025-03-08 17:19:33,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:19:33,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 17:19:33,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:19:33,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 17:19:33,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 17:19:33,985 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2025-03-08 17:19:33,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 44 transitions, 100 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) [2025-03-08 17:19:33,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:19:33,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2025-03-08 17:19:33,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:19:36,832 INFO L124 PetriNetUnfolderBase]: 34475/46055 cut-off events. [2025-03-08 17:19:36,832 INFO L125 PetriNetUnfolderBase]: For 230/230 co-relation queries the response was YES. [2025-03-08 17:19:36,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91939 conditions, 46055 events. 34475/46055 cut-off events. For 230/230 co-relation queries the response was YES. Maximal size of possible extension queue 1454. Compared 264822 event pairs, 5315 based on Foata normal form. 1296/47100 useless extension candidates. Maximal degree in co-relation 91927. Up to 37801 conditions per place. [2025-03-08 17:19:37,213 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 53 selfloop transitions, 2 changer transitions 2/64 dead transitions. [2025-03-08 17:19:37,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 64 transitions, 254 flow [2025-03-08 17:19:37,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 17:19:37,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-08 17:19:37,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2025-03-08 17:19:37,223 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2025-03-08 17:19:37,224 INFO L175 Difference]: Start difference. First operand has 56 places, 44 transitions, 100 flow. Second operand 3 states and 93 transitions. [2025-03-08 17:19:37,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 64 transitions, 254 flow [2025-03-08 17:19:37,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 64 transitions, 250 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-08 17:19:37,231 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 94 flow [2025-03-08 17:19:37,233 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2025-03-08 17:19:37,235 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, -3 predicate places. [2025-03-08 17:19:37,235 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 94 flow [2025-03-08 17:19:37,235 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) [2025-03-08 17:19:37,236 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:19:37,236 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:19:37,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 17:19:37,236 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)] === [2025-03-08 17:19:37,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:19:37,237 INFO L85 PathProgramCache]: Analyzing trace with hash -166630298, now seen corresponding path program 1 times [2025-03-08 17:19:37,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:19:37,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879700197] [2025-03-08 17:19:37,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:19:37,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:19:37,251 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-08 17:19:37,280 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-08 17:19:37,280 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:19:37,280 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:19:37,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:19:37,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:19:37,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879700197] [2025-03-08 17:19:37,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879700197] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:19:37,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:19:37,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 17:19:37,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473295013] [2025-03-08 17:19:37,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:19:37,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:19:37,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:19:37,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:19:37,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:19:37,443 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2025-03-08 17:19:37,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2025-03-08 17:19:37,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:19:37,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2025-03-08 17:19:37,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:19:39,522 INFO L124 PetriNetUnfolderBase]: 28315/41075 cut-off events. [2025-03-08 17:19:39,522 INFO L125 PetriNetUnfolderBase]: For 1408/1408 co-relation queries the response was YES. [2025-03-08 17:19:39,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80925 conditions, 41075 events. 28315/41075 cut-off events. For 1408/1408 co-relation queries the response was YES. Maximal size of possible extension queue 1425. Compared 277792 event pairs, 3739 based on Foata normal form. 1296/41308 useless extension candidates. Maximal degree in co-relation 80915. Up to 21681 conditions per place. [2025-03-08 17:19:39,767 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 71 selfloop transitions, 6 changer transitions 1/85 dead transitions. [2025-03-08 17:19:39,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 85 transitions, 348 flow [2025-03-08 17:19:39,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 17:19:39,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-08 17:19:39,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2025-03-08 17:19:39,770 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2025-03-08 17:19:39,770 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 94 flow. Second operand 4 states and 124 transitions. [2025-03-08 17:19:39,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 85 transitions, 348 flow [2025-03-08 17:19:39,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 85 transitions, 340 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-08 17:19:39,780 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 132 flow [2025-03-08 17:19:39,781 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=132, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2025-03-08 17:19:39,781 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2025-03-08 17:19:39,781 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 132 flow [2025-03-08 17:19:39,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2025-03-08 17:19:39,782 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:19:39,782 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:19:39,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 17:19:39,783 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)] === [2025-03-08 17:19:39,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:19:39,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1945310879, now seen corresponding path program 1 times [2025-03-08 17:19:39,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:19:39,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674365636] [2025-03-08 17:19:39,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:19:39,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:19:39,796 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-08 17:19:39,817 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-08 17:19:39,820 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:19:39,821 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:19:39,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:19:39,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:19:39,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674365636] [2025-03-08 17:19:39,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674365636] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:19:39,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:19:39,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:19:39,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439448093] [2025-03-08 17:19:39,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:19:39,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:19:39,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:19:39,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:19:39,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:19:39,950 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2025-03-08 17:19:39,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 132 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:19:39,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:19:39,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2025-03-08 17:19:39,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:19:41,307 INFO L124 PetriNetUnfolderBase]: 18843/27251 cut-off events. [2025-03-08 17:19:41,308 INFO L125 PetriNetUnfolderBase]: For 5242/5242 co-relation queries the response was YES. [2025-03-08 17:19:41,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60867 conditions, 27251 events. 18843/27251 cut-off events. For 5242/5242 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 170067 event pairs, 2151 based on Foata normal form. 1040/27740 useless extension candidates. Maximal degree in co-relation 60855. Up to 10161 conditions per place. [2025-03-08 17:19:41,432 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 92 selfloop transitions, 10 changer transitions 1/110 dead transitions. [2025-03-08 17:19:41,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 110 transitions, 497 flow [2025-03-08 17:19:41,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 17:19:41,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-08 17:19:41,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2025-03-08 17:19:41,434 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-03-08 17:19:41,434 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 132 flow. Second operand 5 states and 160 transitions. [2025-03-08 17:19:41,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 110 transitions, 497 flow [2025-03-08 17:19:41,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 110 transitions, 486 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-08 17:19:41,445 INFO L231 Difference]: Finished difference. Result has 59 places, 49 transitions, 184 flow [2025-03-08 17:19:41,445 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=184, PETRI_PLACES=59, PETRI_TRANSITIONS=49} [2025-03-08 17:19:41,446 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2025-03-08 17:19:41,446 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 49 transitions, 184 flow [2025-03-08 17:19:41,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:19:41,446 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:19:41,446 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:19:41,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 17:19:41,446 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)] === [2025-03-08 17:19:41,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:19:41,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1712491332, now seen corresponding path program 1 times [2025-03-08 17:19:41,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:19:41,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587055474] [2025-03-08 17:19:41,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:19:41,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:19:41,453 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-08 17:19:41,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-08 17:19:41,464 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:19:41,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:19:41,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:19:41,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:19:41,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587055474] [2025-03-08 17:19:41,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587055474] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:19:41,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:19:41,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:19:41,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349429093] [2025-03-08 17:19:41,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:19:41,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:19:41,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:19:41,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:19:41,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:19:41,592 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2025-03-08 17:19:41,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 184 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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) [2025-03-08 17:19:41,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:19:41,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2025-03-08 17:19:41,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:19:42,432 INFO L124 PetriNetUnfolderBase]: 11675/16499 cut-off events. [2025-03-08 17:19:42,432 INFO L125 PetriNetUnfolderBase]: For 9946/9946 co-relation queries the response was YES. [2025-03-08 17:19:42,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40751 conditions, 16499 events. 11675/16499 cut-off events. For 9946/9946 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 90125 event pairs, 1839 based on Foata normal form. 528/16860 useless extension candidates. Maximal degree in co-relation 40737. Up to 4800 conditions per place. [2025-03-08 17:19:42,492 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 111 selfloop transitions, 14 changer transitions 1/133 dead transitions. [2025-03-08 17:19:42,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 133 transitions, 652 flow [2025-03-08 17:19:42,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 17:19:42,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 17:19:42,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2025-03-08 17:19:42,494 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6736111111111112 [2025-03-08 17:19:42,494 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 184 flow. Second operand 6 states and 194 transitions. [2025-03-08 17:19:42,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 133 transitions, 652 flow [2025-03-08 17:19:42,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 133 transitions, 622 flow, removed 5 selfloop flow, removed 4 redundant places. [2025-03-08 17:19:42,596 INFO L231 Difference]: Finished difference. Result has 62 places, 53 transitions, 234 flow [2025-03-08 17:19:42,596 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=234, PETRI_PLACES=62, PETRI_TRANSITIONS=53} [2025-03-08 17:19:42,597 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2025-03-08 17:19:42,597 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 53 transitions, 234 flow [2025-03-08 17:19:42,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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) [2025-03-08 17:19:42,597 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:19:42,597 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:19:42,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 17:19:42,597 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)] === [2025-03-08 17:19:42,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:19:42,598 INFO L85 PathProgramCache]: Analyzing trace with hash 598301411, now seen corresponding path program 1 times [2025-03-08 17:19:42,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:19:42,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987319089] [2025-03-08 17:19:42,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:19:42,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:19:42,608 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-08 17:19:42,630 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-08 17:19:42,630 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:19:42,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:19:42,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:19:42,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:19:42,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987319089] [2025-03-08 17:19:42,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987319089] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:19:42,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:19:42,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 17:19:42,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607159128] [2025-03-08 17:19:42,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:19:42,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 17:19:42,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:19:42,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 17:19:42,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-08 17:19:42,794 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2025-03-08 17:19:42,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 234 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 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) [2025-03-08 17:19:42,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:19:42,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2025-03-08 17:19:42,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:19:43,481 INFO L124 PetriNetUnfolderBase]: 9051/12467 cut-off events. [2025-03-08 17:19:43,481 INFO L125 PetriNetUnfolderBase]: For 9858/9858 co-relation queries the response was YES. [2025-03-08 17:19:43,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32144 conditions, 12467 events. 9051/12467 cut-off events. For 9858/9858 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 64027 event pairs, 1687 based on Foata normal form. 144/12572 useless extension candidates. Maximal degree in co-relation 32129. Up to 4608 conditions per place. [2025-03-08 17:19:43,531 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 96 selfloop transitions, 18 changer transitions 1/122 dead transitions. [2025-03-08 17:19:43,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 122 transitions, 618 flow [2025-03-08 17:19:43,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 17:19:43,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-08 17:19:43,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 194 transitions. [2025-03-08 17:19:43,533 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5773809523809523 [2025-03-08 17:19:43,533 INFO L175 Difference]: Start difference. First operand has 62 places, 53 transitions, 234 flow. Second operand 7 states and 194 transitions. [2025-03-08 17:19:43,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 122 transitions, 618 flow [2025-03-08 17:19:43,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 122 transitions, 572 flow, removed 9 selfloop flow, removed 5 redundant places. [2025-03-08 17:19:43,650 INFO L231 Difference]: Finished difference. Result has 65 places, 53 transitions, 244 flow [2025-03-08 17:19:43,650 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=244, PETRI_PLACES=65, PETRI_TRANSITIONS=53} [2025-03-08 17:19:43,650 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 9 predicate places. [2025-03-08 17:19:43,651 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 53 transitions, 244 flow [2025-03-08 17:19:43,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 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) [2025-03-08 17:19:43,651 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:19:43,651 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:19:43,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 17:19:43,651 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:19:43,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:19:43,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1819103244, now seen corresponding path program 1 times [2025-03-08 17:19:43,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:19:43,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203069577] [2025-03-08 17:19:43,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:19:43,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:19:43,660 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-08 17:19:43,720 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-08 17:19:43,720 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:19:43,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:19:43,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:19:43,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:19:43,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203069577] [2025-03-08 17:19:43,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203069577] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:19:43,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:19:43,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 17:19:43,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324670658] [2025-03-08 17:19:43,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:19:43,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:19:43,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:19:43,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:19:43,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:19:43,996 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2025-03-08 17:19:43,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 244 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 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) [2025-03-08 17:19:43,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:19:43,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2025-03-08 17:19:43,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:19:45,738 INFO L124 PetriNetUnfolderBase]: 18641/25711 cut-off events. [2025-03-08 17:19:45,739 INFO L125 PetriNetUnfolderBase]: For 21678/21678 co-relation queries the response was YES. [2025-03-08 17:19:45,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67081 conditions, 25711 events. 18641/25711 cut-off events. For 21678/21678 co-relation queries the response was YES. Maximal size of possible extension queue 900. Compared 147648 event pairs, 4313 based on Foata normal form. 32/25705 useless extension candidates. Maximal degree in co-relation 67065. Up to 10199 conditions per place. [2025-03-08 17:19:45,892 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 93 selfloop transitions, 8 changer transitions 45/152 dead transitions. [2025-03-08 17:19:45,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 152 transitions, 996 flow [2025-03-08 17:19:45,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 17:19:45,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-08 17:19:45,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2025-03-08 17:19:45,893 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-03-08 17:19:45,893 INFO L175 Difference]: Start difference. First operand has 65 places, 53 transitions, 244 flow. Second operand 8 states and 192 transitions. [2025-03-08 17:19:45,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 152 transitions, 996 flow [2025-03-08 17:19:46,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 152 transitions, 714 flow, removed 51 selfloop flow, removed 10 redundant places. [2025-03-08 17:19:46,309 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 199 flow [2025-03-08 17:19:46,309 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=199, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2025-03-08 17:19:46,309 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 12 predicate places. [2025-03-08 17:19:46,309 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 199 flow [2025-03-08 17:19:46,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 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) [2025-03-08 17:19:46,310 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:19:46,310 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:19:46,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 17:19:46,310 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:19:46,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:19:46,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1212961160, now seen corresponding path program 2 times [2025-03-08 17:19:46,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:19:46,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003186429] [2025-03-08 17:19:46,311 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:19:46,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:19:46,320 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 1 equivalence classes. [2025-03-08 17:19:46,362 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-08 17:19:46,362 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:19:46,362 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:19:46,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:19:46,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:19:46,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003186429] [2025-03-08 17:19:46,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003186429] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:19:46,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:19:46,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 17:19:46,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064349903] [2025-03-08 17:19:46,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:19:46,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:19:46,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:19:46,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:19:46,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:19:46,590 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2025-03-08 17:19:46,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 199 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 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) [2025-03-08 17:19:46,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:19:46,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2025-03-08 17:19:46,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:19:47,408 INFO L124 PetriNetUnfolderBase]: 12661/17594 cut-off events. [2025-03-08 17:19:47,409 INFO L125 PetriNetUnfolderBase]: For 5097/5097 co-relation queries the response was YES. [2025-03-08 17:19:47,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43827 conditions, 17594 events. 12661/17594 cut-off events. For 5097/5097 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 93213 event pairs, 2929 based on Foata normal form. 16/17610 useless extension candidates. Maximal degree in co-relation 43810. Up to 9676 conditions per place. [2025-03-08 17:19:47,513 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 85 selfloop transitions, 13 changer transitions 28/132 dead transitions. [2025-03-08 17:19:47,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 132 transitions, 689 flow [2025-03-08 17:19:47,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 17:19:47,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-08 17:19:47,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2025-03-08 17:19:47,514 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2025-03-08 17:19:47,514 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 199 flow. Second operand 7 states and 167 transitions. [2025-03-08 17:19:47,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 132 transitions, 689 flow [2025-03-08 17:19:47,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 132 transitions, 668 flow, removed 8 selfloop flow, removed 5 redundant places. [2025-03-08 17:19:47,519 INFO L231 Difference]: Finished difference. Result has 70 places, 66 transitions, 291 flow [2025-03-08 17:19:47,520 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=291, PETRI_PLACES=70, PETRI_TRANSITIONS=66} [2025-03-08 17:19:47,520 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2025-03-08 17:19:47,520 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 66 transitions, 291 flow [2025-03-08 17:19:47,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 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) [2025-03-08 17:19:47,520 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:19:47,520 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:19:47,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 17:19:47,521 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:19:47,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:19:47,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1225258260, now seen corresponding path program 3 times [2025-03-08 17:19:47,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:19:47,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088193889] [2025-03-08 17:19:47,521 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:19:47,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:19:47,529 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 36 statements into 1 equivalence classes. [2025-03-08 17:19:47,561 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-08 17:19:47,562 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-08 17:19:47,562 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:19:47,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:19:47,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:19:47,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088193889] [2025-03-08 17:19:47,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088193889] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:19:47,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:19:47,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 17:19:47,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544893634] [2025-03-08 17:19:47,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:19:47,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 17:19:47,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:19:47,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 17:19:47,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-08 17:19:47,754 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2025-03-08 17:19:47,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 66 transitions, 291 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 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) [2025-03-08 17:19:47,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:19:47,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2025-03-08 17:19:47,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:19:49,148 INFO L124 PetriNetUnfolderBase]: 18087/25108 cut-off events. [2025-03-08 17:19:49,148 INFO L125 PetriNetUnfolderBase]: For 19412/19412 co-relation queries the response was YES. [2025-03-08 17:19:49,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68329 conditions, 25108 events. 18087/25108 cut-off events. For 19412/19412 co-relation queries the response was YES. Maximal size of possible extension queue 812. Compared 139208 event pairs, 2687 based on Foata normal form. 16/25124 useless extension candidates. Maximal degree in co-relation 68310. Up to 11794 conditions per place. [2025-03-08 17:19:49,306 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 68 selfloop transitions, 10 changer transitions 86/170 dead transitions. [2025-03-08 17:19:49,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 170 transitions, 988 flow [2025-03-08 17:19:49,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 17:19:49,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-08 17:19:49,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2025-03-08 17:19:49,307 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5130208333333334 [2025-03-08 17:19:49,307 INFO L175 Difference]: Start difference. First operand has 70 places, 66 transitions, 291 flow. Second operand 8 states and 197 transitions. [2025-03-08 17:19:49,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 170 transitions, 988 flow [2025-03-08 17:19:49,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 170 transitions, 982 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-03-08 17:19:49,317 INFO L231 Difference]: Finished difference. Result has 77 places, 59 transitions, 274 flow [2025-03-08 17:19:49,318 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=274, PETRI_PLACES=77, PETRI_TRANSITIONS=59} [2025-03-08 17:19:49,318 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 21 predicate places. [2025-03-08 17:19:49,318 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 59 transitions, 274 flow [2025-03-08 17:19:49,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 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) [2025-03-08 17:19:49,318 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:19:49,319 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:19:49,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 17:19:49,319 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:19:49,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:19:49,319 INFO L85 PathProgramCache]: Analyzing trace with hash 627128164, now seen corresponding path program 4 times [2025-03-08 17:19:49,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:19:49,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322396922] [2025-03-08 17:19:49,319 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 17:19:49,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:19:49,328 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 36 statements into 2 equivalence classes. [2025-03-08 17:19:49,339 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-03-08 17:19:49,339 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 17:19:49,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:19:49,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:19:49,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:19:49,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322396922] [2025-03-08 17:19:49,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322396922] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:19:49,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:19:49,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:19:49,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395898549] [2025-03-08 17:19:49,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:19:49,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:19:49,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:19:49,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:19:49,464 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:19:49,467 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2025-03-08 17:19:49,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 59 transitions, 274 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2025-03-08 17:19:49,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:19:49,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2025-03-08 17:19:49,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:19:50,164 INFO L124 PetriNetUnfolderBase]: 9795/13826 cut-off events. [2025-03-08 17:19:50,164 INFO L125 PetriNetUnfolderBase]: For 15097/15097 co-relation queries the response was YES. [2025-03-08 17:19:50,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37667 conditions, 13826 events. 9795/13826 cut-off events. For 15097/15097 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 73280 event pairs, 4699 based on Foata normal form. 16/13842 useless extension candidates. Maximal degree in co-relation 37644. Up to 8058 conditions per place. [2025-03-08 17:19:50,248 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 61 selfloop transitions, 2 changer transitions 41/109 dead transitions. [2025-03-08 17:19:50,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 109 transitions, 658 flow [2025-03-08 17:19:50,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 17:19:50,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 17:19:50,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2025-03-08 17:19:50,250 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4548611111111111 [2025-03-08 17:19:50,250 INFO L175 Difference]: Start difference. First operand has 77 places, 59 transitions, 274 flow. Second operand 6 states and 131 transitions. [2025-03-08 17:19:50,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 109 transitions, 658 flow [2025-03-08 17:19:50,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 109 transitions, 594 flow, removed 5 selfloop flow, removed 10 redundant places. [2025-03-08 17:19:50,257 INFO L231 Difference]: Finished difference. Result has 73 places, 52 transitions, 202 flow [2025-03-08 17:19:50,257 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=202, PETRI_PLACES=73, PETRI_TRANSITIONS=52} [2025-03-08 17:19:50,258 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2025-03-08 17:19:50,258 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 52 transitions, 202 flow [2025-03-08 17:19:50,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2025-03-08 17:19:50,258 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:19:50,258 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:19:50,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 17:19:50,258 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:19:50,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:19:50,259 INFO L85 PathProgramCache]: Analyzing trace with hash -78249136, now seen corresponding path program 5 times [2025-03-08 17:19:50,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:19:50,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176038593] [2025-03-08 17:19:50,259 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 17:19:50,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:19:50,270 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 36 statements into 1 equivalence classes. [2025-03-08 17:19:50,310 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-08 17:19:50,311 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:19:50,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:19:50,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:19:50,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:19:50,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176038593] [2025-03-08 17:19:50,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176038593] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:19:50,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:19:50,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 17:19:50,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369328377] [2025-03-08 17:19:50,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:19:50,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 17:19:50,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:19:50,733 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 17:19:50,733 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-08 17:19:50,739 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2025-03-08 17:19:50,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 52 transitions, 202 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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) [2025-03-08 17:19:50,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:19:50,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2025-03-08 17:19:50,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:19:51,138 INFO L124 PetriNetUnfolderBase]: 3415/4854 cut-off events. [2025-03-08 17:19:51,138 INFO L125 PetriNetUnfolderBase]: For 3100/3100 co-relation queries the response was YES. [2025-03-08 17:19:51,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12128 conditions, 4854 events. 3415/4854 cut-off events. For 3100/3100 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 20994 event pairs, 572 based on Foata normal form. 16/4870 useless extension candidates. Maximal degree in co-relation 12106. Up to 2113 conditions per place. [2025-03-08 17:19:51,155 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 58 selfloop transitions, 8 changer transitions 64/135 dead transitions. [2025-03-08 17:19:51,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 135 transitions, 737 flow [2025-03-08 17:19:51,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 17:19:51,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-08 17:19:51,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2025-03-08 17:19:51,156 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41041666666666665 [2025-03-08 17:19:51,156 INFO L175 Difference]: Start difference. First operand has 73 places, 52 transitions, 202 flow. Second operand 10 states and 197 transitions. [2025-03-08 17:19:51,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 135 transitions, 737 flow [2025-03-08 17:19:51,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 135 transitions, 661 flow, removed 15 selfloop flow, removed 11 redundant places. [2025-03-08 17:19:51,160 INFO L231 Difference]: Finished difference. Result has 73 places, 52 transitions, 199 flow [2025-03-08 17:19:51,160 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=199, PETRI_PLACES=73, PETRI_TRANSITIONS=52} [2025-03-08 17:19:51,161 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2025-03-08 17:19:51,161 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 52 transitions, 199 flow [2025-03-08 17:19:51,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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) [2025-03-08 17:19:51,161 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:19:51,161 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:19:51,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 17:19:51,161 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:19:51,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:19:51,162 INFO L85 PathProgramCache]: Analyzing trace with hash -496386542, now seen corresponding path program 6 times [2025-03-08 17:19:51,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:19:51,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096808028] [2025-03-08 17:19:51,162 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 17:19:51,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:19:51,169 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 36 statements into 1 equivalence classes. [2025-03-08 17:19:51,190 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-08 17:19:51,190 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-08 17:19:51,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 17:19:51,191 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-08 17:19:51,194 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-08 17:19:51,222 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-08 17:19:51,225 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:19:51,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 17:19:51,250 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-08 17:19:51,250 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-08 17:19:51,251 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2025-03-08 17:19:51,252 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2025-03-08 17:19:51,252 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2025-03-08 17:19:51,252 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2025-03-08 17:19:51,252 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2025-03-08 17:19:51,252 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2025-03-08 17:19:51,252 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2025-03-08 17:19:51,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 17:19:51,253 INFO L422 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1] [2025-03-08 17:19:51,325 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-08 17:19:51,327 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-08 17:19:51,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.03 05:19:51 BasicIcfg [2025-03-08 17:19:51,333 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-08 17:19:51,333 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-08 17:19:51,333 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-08 17:19:51,333 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-08 17:19:51,334 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:19:33" (3/4) ... [2025-03-08 17:19:51,334 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-03-08 17:19:51,419 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 9. [2025-03-08 17:19:51,455 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-08 17:19:51,456 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-08 17:19:51,456 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-08 17:19:51,456 INFO L158 Benchmark]: Toolchain (without parser) took 19021.01ms. Allocated memory was 167.8MB in the beginning and 3.2GB in the end (delta: 3.0GB). Free memory was 122.0MB in the beginning and 1.7GB in the end (delta: -1.5GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2025-03-08 17:19:51,456 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 201.3MB. Free memory is still 116.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 17:19:51,457 INFO L158 Benchmark]: CACSL2BoogieTranslator took 359.36ms. Allocated memory is still 167.8MB. Free memory was 122.0MB in the beginning and 99.4MB in the end (delta: 22.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-08 17:19:51,457 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.39ms. Allocated memory is still 167.8MB. Free memory was 99.4MB in the beginning and 97.5MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 17:19:51,457 INFO L158 Benchmark]: Boogie Preprocessor took 43.03ms. Allocated memory is still 167.8MB. Free memory was 97.5MB in the beginning and 94.5MB in the end (delta: 3.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 17:19:51,458 INFO L158 Benchmark]: IcfgBuilder took 493.95ms. Allocated memory is still 167.8MB. Free memory was 94.5MB in the beginning and 44.2MB in the end (delta: 50.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2025-03-08 17:19:51,459 INFO L158 Benchmark]: TraceAbstraction took 17959.23ms. Allocated memory was 167.8MB in the beginning and 3.2GB in the end (delta: 3.0GB). Free memory was 44.2MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2025-03-08 17:19:51,459 INFO L158 Benchmark]: Witness Printer took 122.66ms. Allocated memory is still 3.2GB. Free memory was 1.7GB in the beginning and 1.7GB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-08 17:19:51,461 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 201.3MB. Free memory is still 116.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 359.36ms. Allocated memory is still 167.8MB. Free memory was 122.0MB in the beginning and 99.4MB in the end (delta: 22.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.39ms. Allocated memory is still 167.8MB. Free memory was 99.4MB in the beginning and 97.5MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 43.03ms. Allocated memory is still 167.8MB. Free memory was 97.5MB in the beginning and 94.5MB in the end (delta: 3.0MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 493.95ms. Allocated memory is still 167.8MB. Free memory was 94.5MB in the beginning and 44.2MB in the end (delta: 50.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * TraceAbstraction took 17959.23ms. Allocated memory was 167.8MB in the beginning and 3.2GB in the end (delta: 3.0GB). Free memory was 44.2MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. * Witness Printer took 122.66ms. Allocated memory is still 3.2GB. Free memory was 1.7GB in the beginning and 1.7GB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p2_EAX = 0; [L714] 0 int __unbuffered_p3_EAX = 0; [L716] 0 int a = 0; [L717] 0 _Bool main$tmp_guard0; [L718] 0 _Bool main$tmp_guard1; [L720] 0 int x = 0; [L722] 0 int y = 0; [L724] 0 int z = 0; [L725] 0 _Bool z$flush_delayed; [L726] 0 int z$mem_tmp; [L727] 0 _Bool z$r_buff0_thd0; [L728] 0 _Bool z$r_buff0_thd1; [L729] 0 _Bool z$r_buff0_thd2; [L730] 0 _Bool z$r_buff0_thd3; [L731] 0 _Bool z$r_buff0_thd4; [L732] 0 _Bool z$r_buff1_thd0; [L733] 0 _Bool z$r_buff1_thd1; [L734] 0 _Bool z$r_buff1_thd2; [L735] 0 _Bool z$r_buff1_thd3; [L736] 0 _Bool z$r_buff1_thd4; [L737] 0 _Bool z$read_delayed; [L738] 0 int *z$read_delayed_var; [L739] 0 int z$w_buff0; [L740] 0 _Bool z$w_buff0_used; [L741] 0 int z$w_buff1; [L742] 0 _Bool z$w_buff1_used; [L743] 0 _Bool weak$$choice0; [L744] 0 _Bool weak$$choice2; [L844] 0 pthread_t t1413; [L845] FCALL, FORK 0 pthread_create(&t1413, ((void *)0), P0, ((void *)0)) VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=0, main$tmp_guard0=0, main$tmp_guard1=0, t1413=-3, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L846] 0 pthread_t t1414; [L847] FCALL, FORK 0 pthread_create(&t1414, ((void *)0), P1, ((void *)0)) VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t1413=-3, t1414=-2, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L848] 0 pthread_t t1415; [L849] FCALL, FORK 0 pthread_create(&t1415, ((void *)0), P2, ((void *)0)) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t1413=-3, t1414=-2, t1415=-1, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L850] 0 pthread_t t1416; [L851] FCALL, FORK 0 pthread_create(&t1416, ((void *)0), P3, ((void *)0)) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t1413=-3, t1414=-2, t1415=-1, t1416=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L806] 4 z$w_buff1 = z$w_buff0 [L807] 4 z$w_buff0 = 1 [L808] 4 z$w_buff1_used = z$w_buff0_used [L809] 4 z$w_buff0_used = (_Bool)1 [L810] CALL 4 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L18] COND FALSE 4 !(!expression) [L810] RET 4 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L811] 4 z$r_buff1_thd0 = z$r_buff0_thd0 [L812] 4 z$r_buff1_thd1 = z$r_buff0_thd1 [L813] 4 z$r_buff1_thd2 = z$r_buff0_thd2 [L814] 4 z$r_buff1_thd3 = z$r_buff0_thd3 [L815] 4 z$r_buff1_thd4 = z$r_buff0_thd4 [L816] 4 z$r_buff0_thd4 = (_Bool)1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L819] 4 __unbuffered_p3_EAX = a VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L748] 1 a = 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L751] 1 x = 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L763] 2 x = 2 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L766] 2 y = 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L756] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=1, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L771] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L778] 3 y = 2 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L781] 3 weak$$choice0 = __VERIFIER_nondet_bool() [L782] 3 weak$$choice2 = __VERIFIER_nondet_bool() [L783] 3 z$flush_delayed = weak$$choice2 [L784] 3 z$mem_tmp = z [L785] 3 z = !z$w_buff0_used || !z$r_buff0_thd3 && !z$w_buff1_used || !z$r_buff0_thd3 && !z$r_buff1_thd3 ? z : (z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : z$w_buff1) [L786] 3 z$w_buff0 = weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd3 && !z$w_buff1_used || !z$r_buff0_thd3 && !z$r_buff1_thd3 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : z$w_buff0)) [L787] 3 z$w_buff1 = weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd3 && !z$w_buff1_used || !z$r_buff0_thd3 && !z$r_buff1_thd3 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff1 : z$w_buff1)) [L788] 3 z$w_buff0_used = weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd3 && !z$w_buff1_used || !z$r_buff0_thd3 && !z$r_buff1_thd3 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used)) [L789] 3 z$w_buff1_used = weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd3 && !z$w_buff1_used || !z$r_buff0_thd3 && !z$r_buff1_thd3 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : (_Bool)0)) [L790] 3 z$r_buff0_thd3 = weak$$choice2 ? z$r_buff0_thd3 : (!z$w_buff0_used || !z$r_buff0_thd3 && !z$w_buff1_used || !z$r_buff0_thd3 && !z$r_buff1_thd3 ? z$r_buff0_thd3 : (z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3)) [L791] 3 z$r_buff1_thd3 = weak$$choice2 ? z$r_buff1_thd3 : (!z$w_buff0_used || !z$r_buff0_thd3 && !z$w_buff1_used || !z$r_buff0_thd3 && !z$r_buff1_thd3 ? z$r_buff1_thd3 : (z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : (_Bool)0)) [L792] 3 __unbuffered_p2_EAX = z [L793] 3 z = z$flush_delayed ? z$mem_tmp : z [L794] 3 z$flush_delayed = (_Bool)0 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x=2, y=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L822] 4 z = z$w_buff0_used && z$r_buff0_thd4 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd4 ? z$w_buff1 : z) [L823] 4 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$w_buff0_used [L824] 4 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$w_buff1_used [L825] 4 z$r_buff0_thd4 = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$r_buff0_thd4 [L826] 4 z$r_buff1_thd4 = z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$r_buff1_thd4 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x=2, y=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=1] [L799] 3 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=3, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x=2, y=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=1] [L829] 4 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=4, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x=2, y=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=1] [L853] 0 main$tmp_guard0 = __unbuffered_cnt == 4 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=4, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1413=-3, t1414=-2, t1415=-1, t1416=0, weak$$choice0=1, weak$$choice2=1, x=2, y=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=1] [L855] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L855] RET 0 assume_abort_if_not(main$tmp_guard0) [L857] 0 z = z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L858] 0 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used [L859] 0 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$w_buff1_used [L860] 0 z$r_buff0_thd0 = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0 [L861] 0 z$r_buff1_thd0 = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$r_buff1_thd0 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=4, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1413=-3, t1414=-2, t1415=-1, t1416=0, weak$$choice0=1, weak$$choice2=1, x=2, y=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=1] [L864] 0 main$tmp_guard1 = !(x == 2 && y == 2 && __unbuffered_p2_EAX == 0 && __unbuffered_p3_EAX == 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=4, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1413=-3, t1414=-2, t1415=-1, t1416=0, weak$$choice0=1, weak$$choice2=1, x=2, y=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=1] [L866] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(expression)=0, __unbuffered_cnt=4, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x=2, y=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=1] [L18] 0 reach_error() VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(expression)=0, __unbuffered_cnt=4, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x=2, y=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=1] - UnprovableResult [Line: 18]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 851]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 849]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 845]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 847]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 81 locations, 77 edges, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 17.8s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 15.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 939 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 927 mSDsluCounter, 79 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 69 mSDsCounter, 46 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1938 IncrementalHoareTripleChecker+Invalid, 1984 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 46 mSolverCounterUnsat, 10 mSDtfsCounter, 1938 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=291occurred in iteration=7, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 320 NumberOfCodeBlocks, 320 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 274 ConstructedInterpolants, 0 QuantifiedInterpolants, 1343 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2025-03-08 17:19:51,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE