./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe003_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe003_tso.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cc60b32bd5539dadbcbe1bdf86f21665a573ec180c72ba491085256c00923963 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:03:50,029 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:03:50,077 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 01:03:50,081 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:03:50,081 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:03:50,093 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:03:50,094 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:03:50,094 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:03:50,094 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:03:50,094 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:03:50,094 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:03:50,094 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:03:50,094 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:03:50,094 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:03:50,094 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:03:50,095 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:03:50,095 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:03:50,095 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 01:03:50,095 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:03:50,095 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 01:03:50,095 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:03:50,095 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:03:50,095 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:03:50,095 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:03:50,095 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 01:03:50,095 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:03:50,095 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:03:50,095 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:03:50,095 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:03:50,095 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:03:50,095 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:03:50,095 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:03:50,095 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:03:50,096 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:03:50,096 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:03:50,096 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:03:50,096 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:03:50,096 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:03:50,096 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:03:50,096 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:03:50,096 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:03:50,096 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:03:50,096 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:03:50,096 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc60b32bd5539dadbcbe1bdf86f21665a573ec180c72ba491085256c00923963 [2025-02-08 01:03:50,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:03:50,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:03:50,310 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:03:50,311 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:03:50,311 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:03:50,312 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe003_tso.i [2025-02-08 01:03:51,420 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/67cd4f068/f855bdf3d49e4fbb82c18f34d5d222e0/FLAG4e024a15d [2025-02-08 01:03:51,721 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:03:51,722 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe003_tso.i [2025-02-08 01:03:51,735 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/67cd4f068/f855bdf3d49e4fbb82c18f34d5d222e0/FLAG4e024a15d [2025-02-08 01:03:51,749 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/67cd4f068/f855bdf3d49e4fbb82c18f34d5d222e0 [2025-02-08 01:03:51,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:03:51,753 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:03:51,755 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:03:51,755 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:03:51,758 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:03:51,759 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:03:51" (1/1) ... [2025-02-08 01:03:51,760 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56497c1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:51, skipping insertion in model container [2025-02-08 01:03:51,760 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:03:51" (1/1) ... [2025-02-08 01:03:51,789 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:03:51,930 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe003_tso.i[945,958] [2025-02-08 01:03:52,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:03:52,071 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:03:52,078 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe003_tso.i[945,958] [2025-02-08 01:03:52,113 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:03:52,142 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:03:52,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:52 WrapperNode [2025-02-08 01:03:52,143 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:03:52,144 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:03:52,144 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:03:52,144 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:03:52,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:52" (1/1) ... [2025-02-08 01:03:52,157 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:52" (1/1) ... [2025-02-08 01:03:52,171 INFO L138 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2025-02-08 01:03:52,173 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:03:52,173 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:03:52,174 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:03:52,174 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:03:52,178 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:52" (1/1) ... [2025-02-08 01:03:52,179 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:52" (1/1) ... [2025-02-08 01:03:52,181 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:52" (1/1) ... [2025-02-08 01:03:52,193 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-08 01:03:52,195 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:52" (1/1) ... [2025-02-08 01:03:52,196 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:52" (1/1) ... [2025-02-08 01:03:52,199 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:52" (1/1) ... [2025-02-08 01:03:52,199 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:52" (1/1) ... [2025-02-08 01:03:52,200 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:52" (1/1) ... [2025-02-08 01:03:52,200 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:52" (1/1) ... [2025-02-08 01:03:52,204 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:03:52,209 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:03:52,209 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:03:52,209 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:03:52,210 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:52" (1/1) ... [2025-02-08 01:03:52,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:03:52,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:03:52,254 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 01:03:52,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 01:03:52,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 01:03:52,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:03:52,274 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-02-08 01:03:52,274 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-02-08 01:03:52,275 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-02-08 01:03:52,275 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-02-08 01:03:52,275 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-02-08 01:03:52,275 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-02-08 01:03:52,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:03:52,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 01:03:52,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:03:52,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:03:52,276 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 01:03:52,372 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:03:52,378 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:03:52,538 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 01:03:52,542 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:03:52,638 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:03:52,639 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:03:52,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:03:52 BoogieIcfgContainer [2025-02-08 01:03:52,639 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:03:52,641 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:03:52,644 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:03:52,647 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:03:52,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:03:51" (1/3) ... [2025-02-08 01:03:52,652 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dbb8431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:03:52, skipping insertion in model container [2025-02-08 01:03:52,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:52" (2/3) ... [2025-02-08 01:03:52,652 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dbb8431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:03:52, skipping insertion in model container [2025-02-08 01:03:52,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:03:52" (3/3) ... [2025-02-08 01:03:52,654 INFO L128 eAbstractionObserver]: Analyzing ICFG safe003_tso.i [2025-02-08 01:03:52,676 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:03:52,681 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe003_tso.i that has 4 procedures, 38 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-02-08 01:03:52,681 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 01:03:52,741 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 01:03:52,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 38 transitions, 88 flow [2025-02-08 01:03:52,816 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2025-02-08 01:03:52,819 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 01:03:52,822 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 61 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. [2025-02-08 01:03:52,824 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 38 transitions, 88 flow [2025-02-08 01:03:52,828 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2025-02-08 01:03:52,835 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:03:52,847 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;@5d793309, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:03:52,849 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-08 01:03:52,861 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 01:03:52,863 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2025-02-08 01:03:52,863 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 01:03:52,864 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:03:52,864 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:03:52,865 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)] === [2025-02-08 01:03:52,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:03:52,869 INFO L85 PathProgramCache]: Analyzing trace with hash -101451644, now seen corresponding path program 1 times [2025-02-08 01:03:52,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:03:52,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075217630] [2025-02-08 01:03:52,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:03:52,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:03:52,944 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 01:03:52,979 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 01:03:52,981 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:03:52,981 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:03:53,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:03:53,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:03:53,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075217630] [2025-02-08 01:03:53,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075217630] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:03:53,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:03:53,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 01:03:53,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390942788] [2025-02-08 01:03:53,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:03:53,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:03:53,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:03:53,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:03:53,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:03:53,402 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2025-02-08 01:03:53,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2025-02-08 01:03:53,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:03:53,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2025-02-08 01:03:53,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:03:54,063 INFO L124 PetriNetUnfolderBase]: 4847/7175 cut-off events. [2025-02-08 01:03:54,064 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2025-02-08 01:03:54,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14250 conditions, 7175 events. 4847/7175 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 38677 event pairs, 827 based on Foata normal form. 216/7378 useless extension candidates. Maximal degree in co-relation 14239. Up to 4993 conditions per place. [2025-02-08 01:03:54,140 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 40 selfloop transitions, 2 changer transitions 53/99 dead transitions. [2025-02-08 01:03:54,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 99 transitions, 397 flow [2025-02-08 01:03:54,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:03:54,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:03:54,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 146 transitions. [2025-02-08 01:03:54,152 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5488721804511278 [2025-02-08 01:03:54,154 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 7 states and 146 transitions. [2025-02-08 01:03:54,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 99 transitions, 397 flow [2025-02-08 01:03:54,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 99 transitions, 394 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 01:03:54,162 INFO L231 Difference]: Finished difference. Result has 50 places, 32 transitions, 86 flow [2025-02-08 01:03:54,164 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=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=86, PETRI_PLACES=50, PETRI_TRANSITIONS=32} [2025-02-08 01:03:54,168 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2025-02-08 01:03:54,168 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 32 transitions, 86 flow [2025-02-08 01:03:54,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2025-02-08 01:03:54,168 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:03:54,168 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:03:54,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 01:03:54,170 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)] === [2025-02-08 01:03:54,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:03:54,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1688131195, now seen corresponding path program 1 times [2025-02-08 01:03:54,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:03:54,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847444845] [2025-02-08 01:03:54,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:03:54,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:03:54,181 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 01:03:54,186 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:03:54,186 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:03:54,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:03:54,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:03:54,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:03:54,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847444845] [2025-02-08 01:03:54,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847444845] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:03:54,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:03:54,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:03:54,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812354416] [2025-02-08 01:03:54,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:03:54,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:03:54,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:03:54,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:03:54,320 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:03:54,323 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2025-02-08 01:03:54,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 32 transitions, 86 flow. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:03:54,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:03:54,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2025-02-08 01:03:54,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:03:55,400 INFO L124 PetriNetUnfolderBase]: 6801/9989 cut-off events. [2025-02-08 01:03:55,401 INFO L125 PetriNetUnfolderBase]: For 2134/2134 co-relation queries the response was YES. [2025-02-08 01:03:55,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22090 conditions, 9989 events. 6801/9989 cut-off events. For 2134/2134 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 54574 event pairs, 1295 based on Foata normal form. 304/10280 useless extension candidates. Maximal degree in co-relation 22075. Up to 3341 conditions per place. [2025-02-08 01:03:55,436 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 56 selfloop transitions, 5 changer transitions 79/144 dead transitions. [2025-02-08 01:03:55,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 144 transitions, 614 flow [2025-02-08 01:03:55,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 01:03:55,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 01:03:55,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 213 transitions. [2025-02-08 01:03:55,441 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5605263157894737 [2025-02-08 01:03:55,442 INFO L175 Difference]: Start difference. First operand has 50 places, 32 transitions, 86 flow. Second operand 10 states and 213 transitions. [2025-02-08 01:03:55,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 144 transitions, 614 flow [2025-02-08 01:03:55,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 144 transitions, 582 flow, removed 14 selfloop flow, removed 6 redundant places. [2025-02-08 01:03:55,548 INFO L231 Difference]: Finished difference. Result has 58 places, 35 transitions, 134 flow [2025-02-08 01:03:55,549 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=40, 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=10, PETRI_FLOW=134, PETRI_PLACES=58, PETRI_TRANSITIONS=35} [2025-02-08 01:03:55,549 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2025-02-08 01:03:55,549 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 35 transitions, 134 flow [2025-02-08 01:03:55,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:03:55,550 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:03:55,550 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:03:55,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 01:03:55,550 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)] === [2025-02-08 01:03:55,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:03:55,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1594496974, now seen corresponding path program 1 times [2025-02-08 01:03:55,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:03:55,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400837015] [2025-02-08 01:03:55,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:03:55,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:03:55,559 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 01:03:55,564 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 01:03:55,564 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:03:55,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:03:55,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:03:55,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:03:55,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400837015] [2025-02-08 01:03:55,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400837015] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:03:55,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:03:55,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 01:03:55,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260151708] [2025-02-08 01:03:55,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:03:55,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:03:55,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:03:55,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:03:55,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-08 01:03:55,753 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2025-02-08 01:03:55,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 35 transitions, 134 flow. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:03:55,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:03:55,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2025-02-08 01:03:55,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:03:56,766 INFO L124 PetriNetUnfolderBase]: 8198/12047 cut-off events. [2025-02-08 01:03:56,767 INFO L125 PetriNetUnfolderBase]: For 9012/9012 co-relation queries the response was YES. [2025-02-08 01:03:56,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29920 conditions, 12047 events. 8198/12047 cut-off events. For 9012/9012 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 69933 event pairs, 1266 based on Foata normal form. 220/12264 useless extension candidates. Maximal degree in co-relation 29900. Up to 4752 conditions per place. [2025-02-08 01:03:56,815 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 60 selfloop transitions, 7 changer transitions 56/127 dead transitions. [2025-02-08 01:03:56,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 127 transitions, 701 flow [2025-02-08 01:03:56,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 01:03:56,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-08 01:03:56,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2025-02-08 01:03:56,819 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5350877192982456 [2025-02-08 01:03:56,819 INFO L175 Difference]: Start difference. First operand has 58 places, 35 transitions, 134 flow. Second operand 9 states and 183 transitions. [2025-02-08 01:03:56,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 127 transitions, 701 flow [2025-02-08 01:03:56,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 127 transitions, 665 flow, removed 15 selfloop flow, removed 4 redundant places. [2025-02-08 01:03:56,854 INFO L231 Difference]: Finished difference. Result has 62 places, 35 transitions, 152 flow [2025-02-08 01:03:56,854 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=152, PETRI_PLACES=62, PETRI_TRANSITIONS=35} [2025-02-08 01:03:56,855 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places. [2025-02-08 01:03:56,856 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 35 transitions, 152 flow [2025-02-08 01:03:56,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:03:56,856 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:03:56,856 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] [2025-02-08 01:03:56,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 01:03:56,856 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)] === [2025-02-08 01:03:56,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:03:56,858 INFO L85 PathProgramCache]: Analyzing trace with hash -359165469, now seen corresponding path program 1 times [2025-02-08 01:03:56,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:03:56,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472940077] [2025-02-08 01:03:56,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:03:56,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:03:56,867 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 01:03:56,876 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 01:03:56,878 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:03:56,878 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:03:57,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:03:57,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:03:57,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472940077] [2025-02-08 01:03:57,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472940077] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:03:57,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:03:57,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:03:57,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107605501] [2025-02-08 01:03:57,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:03:57,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:03:57,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:03:57,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:03:57,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:03:57,006 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2025-02-08 01:03:57,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 35 transitions, 152 flow. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:03:57,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:03:57,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2025-02-08 01:03:57,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:03:57,614 INFO L124 PetriNetUnfolderBase]: 4605/6936 cut-off events. [2025-02-08 01:03:57,615 INFO L125 PetriNetUnfolderBase]: For 6348/6348 co-relation queries the response was YES. [2025-02-08 01:03:57,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17874 conditions, 6936 events. 4605/6936 cut-off events. For 6348/6348 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 37360 event pairs, 1033 based on Foata normal form. 100/7032 useless extension candidates. Maximal degree in co-relation 17850. Up to 2700 conditions per place. [2025-02-08 01:03:57,640 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 72 selfloop transitions, 11 changer transitions 49/136 dead transitions. [2025-02-08 01:03:57,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 136 transitions, 766 flow [2025-02-08 01:03:57,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 01:03:57,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-08 01:03:57,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 193 transitions. [2025-02-08 01:03:57,642 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.564327485380117 [2025-02-08 01:03:57,642 INFO L175 Difference]: Start difference. First operand has 62 places, 35 transitions, 152 flow. Second operand 9 states and 193 transitions. [2025-02-08 01:03:57,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 136 transitions, 766 flow [2025-02-08 01:03:57,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 136 transitions, 651 flow, removed 35 selfloop flow, removed 11 redundant places. [2025-02-08 01:03:57,665 INFO L231 Difference]: Finished difference. Result has 63 places, 40 transitions, 196 flow [2025-02-08 01:03:57,665 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=196, PETRI_PLACES=63, PETRI_TRANSITIONS=40} [2025-02-08 01:03:57,666 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2025-02-08 01:03:57,666 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 40 transitions, 196 flow [2025-02-08 01:03:57,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:03:57,666 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:03:57,666 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:03:57,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 01:03:57,666 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)] === [2025-02-08 01:03:57,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:03:57,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1974923599, now seen corresponding path program 1 times [2025-02-08 01:03:57,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:03:57,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718219353] [2025-02-08 01:03:57,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:03:57,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:03:57,672 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 01:03:57,680 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 01:03:57,681 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:03:57,681 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:03:57,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:03:57,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:03:57,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718219353] [2025-02-08 01:03:57,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718219353] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:03:57,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:03:57,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:03:57,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250217358] [2025-02-08 01:03:57,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:03:57,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:03:57,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:03:57,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:03:57,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:03:57,760 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2025-02-08 01:03:57,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 40 transitions, 196 flow. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:03:57,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:03:57,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2025-02-08 01:03:57,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:03:58,294 INFO L124 PetriNetUnfolderBase]: 6613/10012 cut-off events. [2025-02-08 01:03:58,294 INFO L125 PetriNetUnfolderBase]: For 8359/8359 co-relation queries the response was YES. [2025-02-08 01:03:58,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25547 conditions, 10012 events. 6613/10012 cut-off events. For 8359/8359 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 58039 event pairs, 2679 based on Foata normal form. 160/10169 useless extension candidates. Maximal degree in co-relation 25523. Up to 5071 conditions per place. [2025-02-08 01:03:58,343 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 47 selfloop transitions, 6 changer transitions 37/94 dead transitions. [2025-02-08 01:03:58,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 94 transitions, 581 flow [2025-02-08 01:03:58,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:03:58,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:03:58,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2025-02-08 01:03:58,345 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5482456140350878 [2025-02-08 01:03:58,345 INFO L175 Difference]: Start difference. First operand has 63 places, 40 transitions, 196 flow. Second operand 6 states and 125 transitions. [2025-02-08 01:03:58,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 94 transitions, 581 flow [2025-02-08 01:03:58,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 94 transitions, 553 flow, removed 14 selfloop flow, removed 6 redundant places. [2025-02-08 01:03:58,379 INFO L231 Difference]: Finished difference. Result has 61 places, 38 transitions, 183 flow [2025-02-08 01:03:58,380 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=183, PETRI_PLACES=61, PETRI_TRANSITIONS=38} [2025-02-08 01:03:58,380 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places. [2025-02-08 01:03:58,380 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 38 transitions, 183 flow [2025-02-08 01:03:58,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:03:58,380 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:03:58,381 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:03:58,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 01:03:58,381 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)] === [2025-02-08 01:03:58,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:03:58,381 INFO L85 PathProgramCache]: Analyzing trace with hash 235667955, now seen corresponding path program 2 times [2025-02-08 01:03:58,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:03:58,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077124532] [2025-02-08 01:03:58,382 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:03:58,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:03:58,387 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 1 equivalence classes. [2025-02-08 01:03:58,395 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 01:03:58,398 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:03:58,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:03:58,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:03:58,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:03:58,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077124532] [2025-02-08 01:03:58,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077124532] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:03:58,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:03:58,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 01:03:58,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823557933] [2025-02-08 01:03:58,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:03:58,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:03:58,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:03:58,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:03:58,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-08 01:03:58,523 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2025-02-08 01:03:58,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 38 transitions, 183 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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) [2025-02-08 01:03:58,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:03:58,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2025-02-08 01:03:58,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:03:59,149 INFO L124 PetriNetUnfolderBase]: 3424/5208 cut-off events. [2025-02-08 01:03:59,149 INFO L125 PetriNetUnfolderBase]: For 4284/4284 co-relation queries the response was YES. [2025-02-08 01:03:59,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13343 conditions, 5208 events. 3424/5208 cut-off events. For 4284/4284 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 26726 event pairs, 452 based on Foata normal form. 80/5286 useless extension candidates. Maximal degree in co-relation 13320. Up to 2335 conditions per place. [2025-02-08 01:03:59,165 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 40 selfloop transitions, 4 changer transitions 82/130 dead transitions. [2025-02-08 01:03:59,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 130 transitions, 700 flow [2025-02-08 01:03:59,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 01:03:59,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-08 01:03:59,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2025-02-08 01:03:59,167 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48325358851674644 [2025-02-08 01:03:59,167 INFO L175 Difference]: Start difference. First operand has 61 places, 38 transitions, 183 flow. Second operand 11 states and 202 transitions. [2025-02-08 01:03:59,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 130 transitions, 700 flow [2025-02-08 01:03:59,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 130 transitions, 655 flow, removed 9 selfloop flow, removed 7 redundant places. [2025-02-08 01:03:59,176 INFO L231 Difference]: Finished difference. Result has 69 places, 32 transitions, 133 flow [2025-02-08 01:03:59,176 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=133, PETRI_PLACES=69, PETRI_TRANSITIONS=32} [2025-02-08 01:03:59,177 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 27 predicate places. [2025-02-08 01:03:59,177 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 32 transitions, 133 flow [2025-02-08 01:03:59,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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) [2025-02-08 01:03:59,177 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:03:59,177 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:03:59,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 01:03:59,178 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)] === [2025-02-08 01:03:59,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:03:59,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1470305551, now seen corresponding path program 1 times [2025-02-08 01:03:59,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:03:59,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011923800] [2025-02-08 01:03:59,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:03:59,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:03:59,183 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 01:03:59,187 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 01:03:59,187 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:03:59,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:03:59,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:03:59,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:03:59,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011923800] [2025-02-08 01:03:59,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011923800] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:03:59,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:03:59,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 01:03:59,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089309322] [2025-02-08 01:03:59,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:03:59,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:03:59,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:03:59,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:03:59,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-08 01:03:59,285 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2025-02-08 01:03:59,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 32 transitions, 133 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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) [2025-02-08 01:03:59,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:03:59,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2025-02-08 01:03:59,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:03:59,494 INFO L124 PetriNetUnfolderBase]: 1473/2182 cut-off events. [2025-02-08 01:03:59,494 INFO L125 PetriNetUnfolderBase]: For 2672/2672 co-relation queries the response was YES. [2025-02-08 01:03:59,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5742 conditions, 2182 events. 1473/2182 cut-off events. For 2672/2672 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8867 event pairs, 369 based on Foata normal form. 80/2261 useless extension candidates. Maximal degree in co-relation 5725. Up to 1056 conditions per place. [2025-02-08 01:03:59,498 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 0 selfloop transitions, 0 changer transitions 74/74 dead transitions. [2025-02-08 01:03:59,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 74 transitions, 375 flow [2025-02-08 01:03:59,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:03:59,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:03:59,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2025-02-08 01:03:59,499 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4243421052631579 [2025-02-08 01:03:59,499 INFO L175 Difference]: Start difference. First operand has 69 places, 32 transitions, 133 flow. Second operand 8 states and 129 transitions. [2025-02-08 01:03:59,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 74 transitions, 375 flow [2025-02-08 01:03:59,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 74 transitions, 307 flow, removed 19 selfloop flow, removed 16 redundant places. [2025-02-08 01:03:59,503 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2025-02-08 01:03:59,503 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2025-02-08 01:03:59,504 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2025-02-08 01:03:59,504 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2025-02-08 01:03:59,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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) [2025-02-08 01:03:59,507 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-02-08 01:03:59,507 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-02-08 01:03:59,507 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-02-08 01:03:59,507 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-02-08 01:03:59,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 01:03:59,508 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2025-02-08 01:03:59,510 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-08 01:03:59,510 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 01:03:59,514 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 01:03:59 BasicIcfg [2025-02-08 01:03:59,514 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 01:03:59,514 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 01:03:59,514 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 01:03:59,514 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 01:03:59,515 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:03:52" (3/4) ... [2025-02-08 01:03:59,516 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-08 01:03:59,518 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P0 [2025-02-08 01:03:59,519 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P1 [2025-02-08 01:03:59,519 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P2 [2025-02-08 01:03:59,521 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2025-02-08 01:03:59,521 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2025-02-08 01:03:59,521 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2025-02-08 01:03:59,521 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-02-08 01:03:59,570 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-08 01:03:59,570 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-08 01:03:59,570 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 01:03:59,571 INFO L158 Benchmark]: Toolchain (without parser) took 7818.07ms. Allocated memory was 142.6MB in the beginning and 520.1MB in the end (delta: 377.5MB). Free memory was 112.0MB in the beginning and 269.0MB in the end (delta: -157.0MB). Peak memory consumption was 219.7MB. Max. memory is 16.1GB. [2025-02-08 01:03:59,571 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 124.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 01:03:59,571 INFO L158 Benchmark]: CACSL2BoogieTranslator took 388.66ms. Allocated memory is still 142.6MB. Free memory was 111.6MB in the beginning and 91.4MB in the end (delta: 20.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 01:03:59,571 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.14ms. Allocated memory is still 142.6MB. Free memory was 91.4MB in the beginning and 90.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 01:03:59,572 INFO L158 Benchmark]: Boogie Preprocessor took 31.24ms. Allocated memory is still 142.6MB. Free memory was 90.0MB in the beginning and 88.5MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 01:03:59,572 INFO L158 Benchmark]: IcfgBuilder took 430.28ms. Allocated memory is still 142.6MB. Free memory was 88.0MB in the beginning and 68.5MB in the end (delta: 19.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 01:03:59,572 INFO L158 Benchmark]: TraceAbstraction took 6873.00ms. Allocated memory was 142.6MB in the beginning and 520.1MB in the end (delta: 377.5MB). Free memory was 68.1MB in the beginning and 277.4MB in the end (delta: -209.3MB). Peak memory consumption was 349.1MB. Max. memory is 16.1GB. [2025-02-08 01:03:59,572 INFO L158 Benchmark]: Witness Printer took 56.07ms. Allocated memory is still 520.1MB. Free memory was 277.4MB in the beginning and 269.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 01:03:59,573 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 124.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 388.66ms. Allocated memory is still 142.6MB. Free memory was 111.6MB in the beginning and 91.4MB in the end (delta: 20.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.14ms. Allocated memory is still 142.6MB. Free memory was 91.4MB in the beginning and 90.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.24ms. Allocated memory is still 142.6MB. Free memory was 90.0MB in the beginning and 88.5MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 430.28ms. Allocated memory is still 142.6MB. Free memory was 88.0MB in the beginning and 68.5MB in the end (delta: 19.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 6873.00ms. Allocated memory was 142.6MB in the beginning and 520.1MB in the end (delta: 377.5MB). Free memory was 68.1MB in the beginning and 277.4MB in the end (delta: -209.3MB). Peak memory consumption was 349.1MB. Max. memory is 16.1GB. * Witness Printer took 56.07ms. Allocated memory is still 520.1MB. Free memory was 277.4MB in the beginning and 269.0MB in the end (delta: 8.4MB). 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: 6.7s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 683 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 673 mSDsluCounter, 61 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 47 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1525 IncrementalHoareTripleChecker+Invalid, 1556 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 14 mSDtfsCounter, 1525 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=196occurred in iteration=4, InterpolantAutomatonStates: 60, 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, 1.1s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 129 ConstructedInterpolants, 0 QuantifiedInterpolants, 481 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! [2025-02-08 01:03:59,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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