./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 735b3cc8 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.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 10dd65d363f3d099295f575f6743961c3e6b480300728ce34fc95b90972dc72c --- Real Ultimate output --- This is Ultimate 0.3.0-?-735b3cc-m [2025-03-14 00:54:12,598 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-14 00:54:12,654 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-14 00:54:12,658 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-14 00:54:12,658 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-14 00:54:12,678 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-14 00:54:12,679 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-14 00:54:12,679 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-14 00:54:12,679 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-14 00:54:12,680 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-14 00:54:12,680 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-14 00:54:12,680 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-14 00:54:12,680 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-14 00:54:12,681 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-14 00:54:12,681 INFO L153 SettingsManager]: * Use SBE=true [2025-03-14 00:54:12,681 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-14 00:54:12,681 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-14 00:54:12,681 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-14 00:54:12,681 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-14 00:54:12,681 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-14 00:54:12,681 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-14 00:54:12,681 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-14 00:54:12,681 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-14 00:54:12,681 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-14 00:54:12,681 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-14 00:54:12,681 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-14 00:54:12,681 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-14 00:54:12,681 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-14 00:54:12,681 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-14 00:54:12,681 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-14 00:54:12,681 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-14 00:54:12,681 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-14 00:54:12,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 00:54:12,681 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-14 00:54:12,682 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-14 00:54:12,682 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-14 00:54:12,682 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-14 00:54:12,682 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-14 00:54:12,682 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-14 00:54:12,682 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-14 00:54:12,682 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-14 00:54:12,682 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-14 00:54:12,682 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-14 00:54:12,682 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 -> 10dd65d363f3d099295f575f6743961c3e6b480300728ce34fc95b90972dc72c [2025-03-14 00:54:12,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-14 00:54:12,914 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-14 00:54:12,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-14 00:54:12,916 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-14 00:54:12,917 INFO L274 PluginConnector]: CDTParser initialized [2025-03-14 00:54:12,917 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-03-14 00:54:14,062 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9811b43c/7847297c47c1484f9be68b445a8c38d9/FLAG3e0e1fe31 [2025-03-14 00:54:14,351 INFO L384 CDTParser]: Found 1 translation units. [2025-03-14 00:54:14,351 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-03-14 00:54:14,362 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9811b43c/7847297c47c1484f9be68b445a8c38d9/FLAG3e0e1fe31 [2025-03-14 00:54:14,647 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9811b43c/7847297c47c1484f9be68b445a8c38d9 [2025-03-14 00:54:14,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-14 00:54:14,653 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-14 00:54:14,654 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-14 00:54:14,654 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-14 00:54:14,657 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-14 00:54:14,658 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 12:54:14" (1/1) ... [2025-03-14 00:54:14,658 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54492a23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:54:14, skipping insertion in model container [2025-03-14 00:54:14,658 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 12:54:14" (1/1) ... [2025-03-14 00:54:14,681 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-14 00:54:14,807 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/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2025-03-14 00:54:14,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 00:54:14,895 INFO L200 MainTranslator]: Completed pre-run [2025-03-14 00:54:14,904 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/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2025-03-14 00:54:14,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 00:54:14,965 INFO L204 MainTranslator]: Completed translation [2025-03-14 00:54:14,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:54:14 WrapperNode [2025-03-14 00:54:14,966 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-14 00:54:14,967 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-14 00:54:14,967 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-14 00:54:14,967 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-14 00:54:14,971 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:54:14" (1/1) ... [2025-03-14 00:54:14,983 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:54:14" (1/1) ... [2025-03-14 00:54:14,997 INFO L138 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2025-03-14 00:54:14,997 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-14 00:54:14,998 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-14 00:54:14,998 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-14 00:54:14,998 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-14 00:54:15,003 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:54:14" (1/1) ... [2025-03-14 00:54:15,003 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:54:14" (1/1) ... [2025-03-14 00:54:15,005 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:54:14" (1/1) ... [2025-03-14 00:54:15,012 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-14 00:54:15,012 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:54:14" (1/1) ... [2025-03-14 00:54:15,012 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:54:14" (1/1) ... [2025-03-14 00:54:15,015 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:54:14" (1/1) ... [2025-03-14 00:54:15,015 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:54:14" (1/1) ... [2025-03-14 00:54:15,016 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:54:14" (1/1) ... [2025-03-14 00:54:15,016 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:54:14" (1/1) ... [2025-03-14 00:54:15,018 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-14 00:54:15,022 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-14 00:54:15,022 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-14 00:54:15,022 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-14 00:54:15,023 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:54:14" (1/1) ... [2025-03-14 00:54:15,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 00:54:15,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 00:54:15,046 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-14 00:54:15,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-14 00:54:15,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-14 00:54:15,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-14 00:54:15,066 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-14 00:54:15,066 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-14 00:54:15,066 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-14 00:54:15,066 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-14 00:54:15,066 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-14 00:54:15,066 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-14 00:54:15,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-14 00:54:15,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-14 00:54:15,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-14 00:54:15,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-14 00:54:15,067 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-14 00:54:15,170 INFO L256 CfgBuilder]: Building ICFG [2025-03-14 00:54:15,172 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-14 00:54:15,302 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-14 00:54:15,303 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-14 00:54:15,303 INFO L318 CfgBuilder]: Performing block encoding [2025-03-14 00:54:15,385 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-14 00:54:15,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 12:54:15 BoogieIcfgContainer [2025-03-14 00:54:15,386 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-14 00:54:15,388 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-14 00:54:15,388 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-14 00:54:15,392 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-14 00:54:15,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.03 12:54:14" (1/3) ... [2025-03-14 00:54:15,393 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a7b7d6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 12:54:15, skipping insertion in model container [2025-03-14 00:54:15,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:54:14" (2/3) ... [2025-03-14 00:54:15,393 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a7b7d6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 12:54:15, skipping insertion in model container [2025-03-14 00:54:15,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 12:54:15" (3/3) ... [2025-03-14 00:54:15,395 INFO L128 eAbstractionObserver]: Analyzing ICFG safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-03-14 00:54:15,406 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-14 00:54:15,407 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i that has 4 procedures, 38 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-14 00:54:15,407 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-14 00:54:15,446 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 00:54:15,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 38 transitions, 88 flow [2025-03-14 00:54:15,505 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2025-03-14 00:54:15,507 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 00:54:15,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2025-03-14 00:54:15,510 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 38 transitions, 88 flow [2025-03-14 00:54:15,514 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2025-03-14 00:54:15,519 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 00:54:15,530 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;@61990f20, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 00:54:15,530 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-14 00:54:15,538 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 00:54:15,538 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2025-03-14 00:54:15,538 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 00:54:15,539 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:54:15,539 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:54:15,539 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 00:54:15,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:54:15,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1021351222, now seen corresponding path program 1 times [2025-03-14 00:54:15,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:54:15,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844885236] [2025-03-14 00:54:15,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:54:15,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:54:15,613 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-14 00:54:15,640 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-14 00:54:15,641 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:54:15,641 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:54:15,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:54:15,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:54:15,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844885236] [2025-03-14 00:54:15,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844885236] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:54:15,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:54:15,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-14 00:54:15,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83570966] [2025-03-14 00:54:15,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:54:15,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-14 00:54:15,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:54:15,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-14 00:54:15,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-14 00:54:15,896 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2025-03-14 00:54:15,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 00:54:15,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:54:15,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2025-03-14 00:54:15,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:54:16,314 INFO L124 PetriNetUnfolderBase]: 3053/4829 cut-off events. [2025-03-14 00:54:16,315 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2025-03-14 00:54:16,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9438 conditions, 4829 events. 3053/4829 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 27634 event pairs, 504 based on Foata normal form. 210/5024 useless extension candidates. Maximal degree in co-relation 9427. Up to 2466 conditions per place. [2025-03-14 00:54:16,353 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 54 selfloop transitions, 5 changer transitions 1/65 dead transitions. [2025-03-14 00:54:16,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 65 transitions, 265 flow [2025-03-14 00:54:16,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-14 00:54:16,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-14 00:54:16,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2025-03-14 00:54:16,368 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6447368421052632 [2025-03-14 00:54:16,370 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 4 states and 98 transitions. [2025-03-14 00:54:16,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 65 transitions, 265 flow [2025-03-14 00:54:16,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 65 transitions, 260 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-14 00:54:16,382 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 104 flow [2025-03-14 00:54:16,384 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2025-03-14 00:54:16,386 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2025-03-14 00:54:16,388 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 104 flow [2025-03-14 00:54:16,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 00:54:16,389 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:54:16,389 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:54:16,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-14 00:54:16,390 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 00:54:16,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:54:16,390 INFO L85 PathProgramCache]: Analyzing trace with hash -225780594, now seen corresponding path program 1 times [2025-03-14 00:54:16,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:54:16,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952728584] [2025-03-14 00:54:16,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:54:16,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:54:16,402 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-14 00:54:16,435 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-14 00:54:16,436 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:54:16,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:54:16,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:54:16,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:54:16,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952728584] [2025-03-14 00:54:16,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952728584] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:54:16,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:54:16,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-14 00:54:16,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576243153] [2025-03-14 00:54:16,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:54:16,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 00:54:16,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:54:16,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 00:54:16,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-14 00:54:16,561 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2025-03-14 00:54:16,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 00:54:16,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:54:16,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2025-03-14 00:54:16,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:54:16,858 INFO L124 PetriNetUnfolderBase]: 1792/2850 cut-off events. [2025-03-14 00:54:16,859 INFO L125 PetriNetUnfolderBase]: For 642/642 co-relation queries the response was YES. [2025-03-14 00:54:16,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6553 conditions, 2850 events. 1792/2850 cut-off events. For 642/642 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 14168 event pairs, 318 based on Foata normal form. 150/2985 useless extension candidates. Maximal degree in co-relation 6541. Up to 939 conditions per place. [2025-03-14 00:54:16,869 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 69 selfloop transitions, 8 changer transitions 1/83 dead transitions. [2025-03-14 00:54:16,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 83 transitions, 377 flow [2025-03-14 00:54:16,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 00:54:16,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 00:54:16,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2025-03-14 00:54:16,871 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6578947368421053 [2025-03-14 00:54:16,871 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 104 flow. Second operand 5 states and 125 transitions. [2025-03-14 00:54:16,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 83 transitions, 377 flow [2025-03-14 00:54:16,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 83 transitions, 367 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-14 00:54:16,877 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 144 flow [2025-03-14 00:54:16,877 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=144, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2025-03-14 00:54:16,878 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2025-03-14 00:54:16,878 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 144 flow [2025-03-14 00:54:16,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 00:54:16,878 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:54:16,878 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:54:16,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-14 00:54:16,878 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 00:54:16,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:54:16,879 INFO L85 PathProgramCache]: Analyzing trace with hash 367126770, now seen corresponding path program 1 times [2025-03-14 00:54:16,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:54:16,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473566513] [2025-03-14 00:54:16,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:54:16,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:54:16,887 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-14 00:54:16,893 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-14 00:54:16,893 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:54:16,893 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:54:17,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:54:17,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:54:17,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473566513] [2025-03-14 00:54:17,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473566513] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:54:17,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:54:17,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 00:54:17,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439743896] [2025-03-14 00:54:17,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:54:17,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-14 00:54:17,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:54:17,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-14 00:54:17,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-14 00:54:17,002 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2025-03-14 00:54:17,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 144 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 00:54:17,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:54:17,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2025-03-14 00:54:17,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:54:17,211 INFO L124 PetriNetUnfolderBase]: 1125/1753 cut-off events. [2025-03-14 00:54:17,211 INFO L125 PetriNetUnfolderBase]: For 1132/1132 co-relation queries the response was YES. [2025-03-14 00:54:17,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4429 conditions, 1753 events. 1125/1753 cut-off events. For 1132/1132 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7740 event pairs, 283 based on Foata normal form. 56/1794 useless extension candidates. Maximal degree in co-relation 4415. Up to 658 conditions per place. [2025-03-14 00:54:17,223 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 58 selfloop transitions, 11 changer transitions 1/75 dead transitions. [2025-03-14 00:54:17,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 75 transitions, 368 flow [2025-03-14 00:54:17,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-14 00:54:17,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-14 00:54:17,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2025-03-14 00:54:17,224 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5526315789473685 [2025-03-14 00:54:17,225 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 144 flow. Second operand 6 states and 126 transitions. [2025-03-14 00:54:17,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 75 transitions, 368 flow [2025-03-14 00:54:17,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 75 transitions, 343 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-03-14 00:54:17,233 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 158 flow [2025-03-14 00:54:17,233 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=158, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2025-03-14 00:54:17,234 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2025-03-14 00:54:17,234 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 158 flow [2025-03-14 00:54:17,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 00:54:17,235 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:54:17,235 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] [2025-03-14 00:54:17,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-14 00:54:17,236 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 00:54:17,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:54:17,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1421633017, now seen corresponding path program 1 times [2025-03-14 00:54:17,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:54:17,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096236764] [2025-03-14 00:54:17,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:54:17,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:54:17,247 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-14 00:54:17,260 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-14 00:54:17,264 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:54:17,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:54:17,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:54:17,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:54:17,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096236764] [2025-03-14 00:54:17,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096236764] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:54:17,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:54:17,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-14 00:54:17,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070939388] [2025-03-14 00:54:17,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:54:17,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-14 00:54:17,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:54:17,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-14 00:54:17,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-14 00:54:17,390 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2025-03-14 00:54:17,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 158 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 00:54:17,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:54:17,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2025-03-14 00:54:17,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:54:17,695 INFO L124 PetriNetUnfolderBase]: 1549/2394 cut-off events. [2025-03-14 00:54:17,695 INFO L125 PetriNetUnfolderBase]: For 1905/1905 co-relation queries the response was YES. [2025-03-14 00:54:17,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6179 conditions, 2394 events. 1549/2394 cut-off events. For 1905/1905 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 11195 event pairs, 242 based on Foata normal form. 8/2399 useless extension candidates. Maximal degree in co-relation 6164. Up to 1310 conditions per place. [2025-03-14 00:54:17,705 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 61 selfloop transitions, 7 changer transitions 23/95 dead transitions. [2025-03-14 00:54:17,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 95 transitions, 564 flow [2025-03-14 00:54:17,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-14 00:54:17,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-14 00:54:17,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2025-03-14 00:54:17,708 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5037593984962406 [2025-03-14 00:54:17,708 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 158 flow. Second operand 7 states and 134 transitions. [2025-03-14 00:54:17,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 95 transitions, 564 flow [2025-03-14 00:54:17,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 95 transitions, 435 flow, removed 20 selfloop flow, removed 8 redundant places. [2025-03-14 00:54:17,719 INFO L231 Difference]: Finished difference. Result has 53 places, 42 transitions, 142 flow [2025-03-14 00:54:17,719 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=142, PETRI_PLACES=53, PETRI_TRANSITIONS=42} [2025-03-14 00:54:17,720 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2025-03-14 00:54:17,720 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 42 transitions, 142 flow [2025-03-14 00:54:17,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 00:54:17,720 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:54:17,720 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] [2025-03-14 00:54:17,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-14 00:54:17,721 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 00:54:17,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:54:17,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1354261723, now seen corresponding path program 2 times [2025-03-14 00:54:17,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:54:17,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039749321] [2025-03-14 00:54:17,722 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 00:54:17,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:54:17,730 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 1 equivalence classes. [2025-03-14 00:54:17,740 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-14 00:54:17,740 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 00:54:17,740 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:54:17,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:54:17,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:54:17,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039749321] [2025-03-14 00:54:17,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039749321] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:54:17,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:54:17,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-14 00:54:17,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384854688] [2025-03-14 00:54:17,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:54:17,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-14 00:54:17,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:54:17,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-14 00:54:17,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-14 00:54:17,868 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2025-03-14 00:54:17,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 42 transitions, 142 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 00:54:17,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:54:17,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2025-03-14 00:54:17,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:54:18,158 INFO L124 PetriNetUnfolderBase]: 1833/2862 cut-off events. [2025-03-14 00:54:18,158 INFO L125 PetriNetUnfolderBase]: For 707/707 co-relation queries the response was YES. [2025-03-14 00:54:18,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6773 conditions, 2862 events. 1833/2862 cut-off events. For 707/707 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 13941 event pairs, 268 based on Foata normal form. 8/2867 useless extension candidates. Maximal degree in co-relation 6758. Up to 1320 conditions per place. [2025-03-14 00:54:18,169 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 46 selfloop transitions, 3 changer transitions 48/101 dead transitions. [2025-03-14 00:54:18,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 101 transitions, 501 flow [2025-03-14 00:54:18,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-14 00:54:18,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-14 00:54:18,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2025-03-14 00:54:18,174 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2025-03-14 00:54:18,174 INFO L175 Difference]: Start difference. First operand has 53 places, 42 transitions, 142 flow. Second operand 8 states and 148 transitions. [2025-03-14 00:54:18,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 101 transitions, 501 flow [2025-03-14 00:54:18,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 101 transitions, 495 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-03-14 00:54:18,178 INFO L231 Difference]: Finished difference. Result has 59 places, 38 transitions, 127 flow [2025-03-14 00:54:18,179 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=127, PETRI_PLACES=59, PETRI_TRANSITIONS=38} [2025-03-14 00:54:18,180 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2025-03-14 00:54:18,181 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 38 transitions, 127 flow [2025-03-14 00:54:18,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 00:54:18,181 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:54:18,181 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] [2025-03-14 00:54:18,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-14 00:54:18,181 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 00:54:18,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:54:18,184 INFO L85 PathProgramCache]: Analyzing trace with hash 587190599, now seen corresponding path program 3 times [2025-03-14 00:54:18,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:54:18,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044308156] [2025-03-14 00:54:18,184 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 00:54:18,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:54:18,191 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 1 equivalence classes. [2025-03-14 00:54:18,201 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-14 00:54:18,202 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-14 00:54:18,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:54:18,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:54:18,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:54:18,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044308156] [2025-03-14 00:54:18,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044308156] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:54:18,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:54:18,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-14 00:54:18,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003682959] [2025-03-14 00:54:18,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:54:18,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-14 00:54:18,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:54:18,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-14 00:54:18,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-14 00:54:18,341 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2025-03-14 00:54:18,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 38 transitions, 127 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 00:54:18,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:54:18,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2025-03-14 00:54:18,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:54:18,590 INFO L124 PetriNetUnfolderBase]: 1035/1667 cut-off events. [2025-03-14 00:54:18,590 INFO L125 PetriNetUnfolderBase]: For 440/440 co-relation queries the response was YES. [2025-03-14 00:54:18,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3891 conditions, 1667 events. 1035/1667 cut-off events. For 440/440 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7253 event pairs, 236 based on Foata normal form. 8/1674 useless extension candidates. Maximal degree in co-relation 3873. Up to 924 conditions per place. [2025-03-14 00:54:18,596 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 41 selfloop transitions, 3 changer transitions 35/83 dead transitions. [2025-03-14 00:54:18,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 83 transitions, 423 flow [2025-03-14 00:54:18,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-14 00:54:18,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-14 00:54:18,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2025-03-14 00:54:18,597 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45864661654135336 [2025-03-14 00:54:18,597 INFO L175 Difference]: Start difference. First operand has 59 places, 38 transitions, 127 flow. Second operand 7 states and 122 transitions. [2025-03-14 00:54:18,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 83 transitions, 423 flow [2025-03-14 00:54:18,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 83 transitions, 394 flow, removed 9 selfloop flow, removed 7 redundant places. [2025-03-14 00:54:18,599 INFO L231 Difference]: Finished difference. Result has 57 places, 38 transitions, 125 flow [2025-03-14 00:54:18,600 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=125, PETRI_PLACES=57, PETRI_TRANSITIONS=38} [2025-03-14 00:54:18,600 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 15 predicate places. [2025-03-14 00:54:18,600 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 38 transitions, 125 flow [2025-03-14 00:54:18,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 00:54:18,600 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:54:18,600 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] [2025-03-14 00:54:18,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-14 00:54:18,601 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 00:54:18,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:54:18,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1187622241, now seen corresponding path program 4 times [2025-03-14 00:54:18,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:54:18,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327336901] [2025-03-14 00:54:18,601 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 00:54:18,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:54:18,607 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 29 statements into 2 equivalence classes. [2025-03-14 00:54:18,612 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-03-14 00:54:18,612 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-14 00:54:18,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:54:18,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:54:18,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:54:18,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327336901] [2025-03-14 00:54:18,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327336901] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:54:18,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:54:18,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-14 00:54:18,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468836100] [2025-03-14 00:54:18,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:54:18,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-14 00:54:18,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:54:18,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-14 00:54:18,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-14 00:54:18,724 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2025-03-14 00:54:18,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 38 transitions, 125 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 00:54:18,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:54:18,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2025-03-14 00:54:18,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:54:18,855 INFO L124 PetriNetUnfolderBase]: 647/1047 cut-off events. [2025-03-14 00:54:18,855 INFO L125 PetriNetUnfolderBase]: For 433/433 co-relation queries the response was YES. [2025-03-14 00:54:18,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2508 conditions, 1047 events. 647/1047 cut-off events. For 433/433 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4277 event pairs, 95 based on Foata normal form. 8/1054 useless extension candidates. Maximal degree in co-relation 2499. Up to 856 conditions per place. [2025-03-14 00:54:18,858 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 0 selfloop transitions, 0 changer transitions 54/54 dead transitions. [2025-03-14 00:54:18,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 54 transitions, 271 flow [2025-03-14 00:54:18,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-14 00:54:18,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-14 00:54:18,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2025-03-14 00:54:18,859 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37719298245614036 [2025-03-14 00:54:18,859 INFO L175 Difference]: Start difference. First operand has 57 places, 38 transitions, 125 flow. Second operand 6 states and 86 transitions. [2025-03-14 00:54:18,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 54 transitions, 271 flow [2025-03-14 00:54:18,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 54 transitions, 265 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-03-14 00:54:18,860 INFO L231 Difference]: Finished difference. Result has 54 places, 0 transitions, 0 flow [2025-03-14 00:54:18,860 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=54, PETRI_TRANSITIONS=0} [2025-03-14 00:54:18,860 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2025-03-14 00:54:18,861 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 0 transitions, 0 flow [2025-03-14 00:54:18,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 00:54:18,863 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-03-14 00:54:18,863 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-03-14 00:54:18,863 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-03-14 00:54:18,863 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-03-14 00:54:18,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-14 00:54:18,863 INFO L422 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2025-03-14 00:54:18,866 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-14 00:54:18,866 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-14 00:54:18,869 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.03 12:54:18 BasicIcfg [2025-03-14 00:54:18,870 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-14 00:54:18,870 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-14 00:54:18,870 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-14 00:54:18,870 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-14 00:54:18,871 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 12:54:15" (3/4) ... [2025-03-14 00:54:18,872 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-14 00:54:18,875 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P0 [2025-03-14 00:54:18,875 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P1 [2025-03-14 00:54:18,875 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P2 [2025-03-14 00:54:18,877 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2025-03-14 00:54:18,877 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2025-03-14 00:54:18,878 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-14 00:54:18,878 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-14 00:54:18,924 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-14 00:54:18,925 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-14 00:54:18,925 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-14 00:54:18,925 INFO L158 Benchmark]: Toolchain (without parser) took 4272.26ms. Allocated memory was 142.6MB in the beginning and 310.4MB in the end (delta: 167.8MB). Free memory was 109.3MB in the beginning and 239.6MB in the end (delta: -130.3MB). Peak memory consumption was 36.3MB. Max. memory is 16.1GB. [2025-03-14 00:54:18,926 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 125.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-14 00:54:18,926 INFO L158 Benchmark]: CACSL2BoogieTranslator took 312.74ms. Allocated memory is still 142.6MB. Free memory was 109.3MB in the beginning and 88.8MB in the end (delta: 20.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-14 00:54:18,926 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.85ms. Allocated memory is still 142.6MB. Free memory was 88.8MB in the beginning and 87.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-14 00:54:18,926 INFO L158 Benchmark]: Boogie Preprocessor took 20.07ms. Allocated memory is still 142.6MB. Free memory was 87.7MB in the beginning and 85.7MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-14 00:54:18,926 INFO L158 Benchmark]: IcfgBuilder took 364.67ms. Allocated memory is still 142.6MB. Free memory was 85.7MB in the beginning and 63.7MB in the end (delta: 22.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-14 00:54:18,927 INFO L158 Benchmark]: TraceAbstraction took 3481.45ms. Allocated memory was 142.6MB in the beginning and 310.4MB in the end (delta: 167.8MB). Free memory was 63.7MB in the beginning and 246.4MB in the end (delta: -182.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-14 00:54:18,927 INFO L158 Benchmark]: Witness Printer took 54.65ms. Allocated memory is still 310.4MB. Free memory was 246.4MB in the beginning and 239.6MB in the end (delta: 6.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-14 00:54:18,928 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 125.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 312.74ms. Allocated memory is still 142.6MB. Free memory was 109.3MB in the beginning and 88.8MB in the end (delta: 20.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.85ms. Allocated memory is still 142.6MB. Free memory was 88.8MB in the beginning and 87.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.07ms. Allocated memory is still 142.6MB. Free memory was 87.7MB in the beginning and 85.7MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 364.67ms. Allocated memory is still 142.6MB. Free memory was 85.7MB in the beginning and 63.7MB in the end (delta: 22.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 3481.45ms. Allocated memory was 142.6MB in the beginning and 310.4MB in the end (delta: 167.8MB). Free memory was 63.7MB in the beginning and 246.4MB in the end (delta: -182.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 54.65ms. Allocated memory is still 310.4MB. Free memory was 246.4MB in the beginning and 239.6MB in the end (delta: 6.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 62 locations, 4 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: 3.4s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 462 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 453 mSDsluCounter, 50 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 44 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1035 IncrementalHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 6 mSDtfsCounter, 1035 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=158occurred in iteration=3, InterpolantAutomatonStates: 43, 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, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 171 NumberOfCodeBlocks, 171 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 164 ConstructedInterpolants, 0 QuantifiedInterpolants, 689 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-14 00:54:18,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE