./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c -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 4f539592bc69a174492e01050b581a78ee6bfd25c2e79dba974730b39e2fa54b --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 17:31:09,867 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 17:31:09,917 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 17:31:09,921 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 17:31:09,921 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 17:31:09,944 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 17:31:09,945 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 17:31:09,945 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 17:31:09,945 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 17:31:09,946 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 17:31:09,946 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 17:31:09,946 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 17:31:09,947 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 17:31:09,947 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 17:31:09,947 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 17:31:09,947 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 17:31:09,947 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 17:31:09,947 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 17:31:09,948 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 17:31:09,948 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 17:31:09,948 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 17:31:09,948 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 17:31:09,948 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 17:31:09,948 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 17:31:09,948 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 17:31:09,948 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 17:31:09,948 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 17:31:09,948 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 17:31:09,948 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 17:31:09,948 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 17:31:09,949 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 17:31:09,949 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 17:31:09,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:31:09,949 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 17:31:09,949 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 17:31:09,949 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 17:31:09,949 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 17:31:09,949 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 17:31:09,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 17:31:09,949 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 17:31:09,949 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 17:31:09,949 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 17:31:09,949 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 17:31:09,950 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 -> 4f539592bc69a174492e01050b581a78ee6bfd25c2e79dba974730b39e2fa54b [2025-03-08 17:31:10,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 17:31:10,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 17:31:10,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 17:31:10,167 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 17:31:10,167 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 17:31:10,168 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c [2025-03-08 17:31:11,314 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5d362a96/7facca88d40240659351900f4718f5a8/FLAG945ddb2d3 [2025-03-08 17:31:11,509 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 17:31:11,510 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c [2025-03-08 17:31:11,516 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5d362a96/7facca88d40240659351900f4718f5a8/FLAG945ddb2d3 [2025-03-08 17:31:11,874 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5d362a96/7facca88d40240659351900f4718f5a8 [2025-03-08 17:31:11,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 17:31:11,876 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 17:31:11,877 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 17:31:11,877 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 17:31:11,880 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 17:31:11,880 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:31:11" (1/1) ... [2025-03-08 17:31:11,881 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b0fe948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:31:11, skipping insertion in model container [2025-03-08 17:31:11,881 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:31:11" (1/1) ... [2025-03-08 17:31:11,891 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 17:31:12,011 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/weaver/parallel-bakery-2.wvr.c[2556,2569] [2025-03-08 17:31:12,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:31:12,025 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 17:31:12,045 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/weaver/parallel-bakery-2.wvr.c[2556,2569] [2025-03-08 17:31:12,046 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:31:12,056 INFO L204 MainTranslator]: Completed translation [2025-03-08 17:31:12,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:31:12 WrapperNode [2025-03-08 17:31:12,057 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 17:31:12,058 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 17:31:12,058 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 17:31:12,058 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 17:31:12,062 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:31:12" (1/1) ... [2025-03-08 17:31:12,071 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:31:12" (1/1) ... [2025-03-08 17:31:12,084 INFO L138 Inliner]: procedures = 18, calls = 14, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 139 [2025-03-08 17:31:12,084 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 17:31:12,085 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 17:31:12,085 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 17:31:12,085 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 17:31:12,093 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:31:12" (1/1) ... [2025-03-08 17:31:12,093 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:31:12" (1/1) ... [2025-03-08 17:31:12,094 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:31:12" (1/1) ... [2025-03-08 17:31:12,103 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-08 17:31:12,103 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:31:12" (1/1) ... [2025-03-08 17:31:12,103 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:31:12" (1/1) ... [2025-03-08 17:31:12,107 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:31:12" (1/1) ... [2025-03-08 17:31:12,111 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:31:12" (1/1) ... [2025-03-08 17:31:12,112 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:31:12" (1/1) ... [2025-03-08 17:31:12,112 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:31:12" (1/1) ... [2025-03-08 17:31:12,113 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 17:31:12,114 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 17:31:12,114 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 17:31:12,114 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 17:31:12,115 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:31:12" (1/1) ... [2025-03-08 17:31:12,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:31:12,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:31:12,138 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 17:31:12,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 17:31:12,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 17:31:12,155 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-08 17:31:12,155 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-08 17:31:12,155 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-08 17:31:12,155 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-08 17:31:12,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 17:31:12,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 17:31:12,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 17:31:12,156 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-08 17:31:12,226 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 17:31:12,228 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 17:31:12,422 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-08 17:31:12,422 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 17:31:12,524 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 17:31:12,524 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 17:31:12,525 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:31:12 BoogieIcfgContainer [2025-03-08 17:31:12,525 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 17:31:12,526 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 17:31:12,526 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 17:31:12,529 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 17:31:12,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:31:11" (1/3) ... [2025-03-08 17:31:12,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d568c83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:31:12, skipping insertion in model container [2025-03-08 17:31:12,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:31:12" (2/3) ... [2025-03-08 17:31:12,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d568c83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:31:12, skipping insertion in model container [2025-03-08 17:31:12,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:31:12" (3/3) ... [2025-03-08 17:31:12,532 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-bakery-2.wvr.c [2025-03-08 17:31:12,543 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 17:31:12,545 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-bakery-2.wvr.c that has 3 procedures, 53 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-08 17:31:12,545 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-08 17:31:12,592 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-08 17:31:12,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 54 transitions, 122 flow [2025-03-08 17:31:12,651 INFO L124 PetriNetUnfolderBase]: 2/52 cut-off events. [2025-03-08 17:31:12,653 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-08 17:31:12,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 52 events. 2/52 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2025-03-08 17:31:12,656 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 54 transitions, 122 flow [2025-03-08 17:31:12,658 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 51 transitions, 114 flow [2025-03-08 17:31:12,665 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 17:31:12,673 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;@4dca9080, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 17:31:12,673 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-03-08 17:31:12,692 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-08 17:31:12,693 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2025-03-08 17:31:12,693 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-08 17:31:12,693 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:31:12,694 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:31:12,695 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:31:12,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:31:12,699 INFO L85 PathProgramCache]: Analyzing trace with hash 536100910, now seen corresponding path program 1 times [2025-03-08 17:31:12,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:31:12,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262208742] [2025-03-08 17:31:12,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:31:12,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:31:12,756 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-03-08 17:31:12,788 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-03-08 17:31:12,788 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:31:12,788 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:31:13,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:31:13,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:31:13,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262208742] [2025-03-08 17:31:13,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262208742] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:31:13,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:31:13,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 17:31:13,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567800567] [2025-03-08 17:31:13,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:31:13,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 17:31:13,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:31:13,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 17:31:13,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 17:31:13,187 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2025-03-08 17:31:13,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 114 flow. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:13,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:31:13,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2025-03-08 17:31:13,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:31:13,554 INFO L124 PetriNetUnfolderBase]: 441/859 cut-off events. [2025-03-08 17:31:13,554 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2025-03-08 17:31:13,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1710 conditions, 859 events. 441/859 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3815 event pairs, 149 based on Foata normal form. 1/833 useless extension candidates. Maximal degree in co-relation 1552. Up to 274 conditions per place. [2025-03-08 17:31:13,560 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 70 selfloop transitions, 10 changer transitions 21/110 dead transitions. [2025-03-08 17:31:13,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 110 transitions, 461 flow [2025-03-08 17:31:13,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 17:31:13,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-08 17:31:13,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2025-03-08 17:31:13,570 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4398148148148148 [2025-03-08 17:31:13,571 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 114 flow. Second operand 8 states and 190 transitions. [2025-03-08 17:31:13,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 110 transitions, 461 flow [2025-03-08 17:31:13,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 110 transitions, 435 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-08 17:31:13,582 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 150 flow [2025-03-08 17:31:13,584 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=150, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2025-03-08 17:31:13,588 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2025-03-08 17:31:13,588 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 150 flow [2025-03-08 17:31:13,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:13,588 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:31:13,588 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:31:13,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 17:31:13,588 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:31:13,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:31:13,592 INFO L85 PathProgramCache]: Analyzing trace with hash -802854162, now seen corresponding path program 2 times [2025-03-08 17:31:13,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:31:13,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713254862] [2025-03-08 17:31:13,592 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:31:13,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:31:13,611 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 47 statements into 1 equivalence classes. [2025-03-08 17:31:13,618 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-03-08 17:31:13,618 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:31:13,618 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:31:13,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:31:13,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:31:13,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713254862] [2025-03-08 17:31:13,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713254862] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:31:13,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:31:13,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:31:13,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267223405] [2025-03-08 17:31:13,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:31:13,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:31:13,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:31:13,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:31:13,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:31:13,740 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2025-03-08 17:31:13,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:13,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:31:13,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2025-03-08 17:31:13,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:31:13,957 INFO L124 PetriNetUnfolderBase]: 722/1316 cut-off events. [2025-03-08 17:31:13,959 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2025-03-08 17:31:13,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2853 conditions, 1316 events. 722/1316 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 6059 event pairs, 120 based on Foata normal form. 0/1275 useless extension candidates. Maximal degree in co-relation 2835. Up to 814 conditions per place. [2025-03-08 17:31:13,966 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 89 selfloop transitions, 18 changer transitions 9/122 dead transitions. [2025-03-08 17:31:13,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 122 transitions, 558 flow [2025-03-08 17:31:13,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 17:31:13,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-08 17:31:13,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2025-03-08 17:31:13,969 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43386243386243384 [2025-03-08 17:31:13,969 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 150 flow. Second operand 7 states and 164 transitions. [2025-03-08 17:31:13,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 122 transitions, 558 flow [2025-03-08 17:31:13,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 122 transitions, 556 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-08 17:31:13,985 INFO L231 Difference]: Finished difference. Result has 70 places, 70 transitions, 261 flow [2025-03-08 17:31:13,985 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=261, PETRI_PLACES=70, PETRI_TRANSITIONS=70} [2025-03-08 17:31:13,985 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2025-03-08 17:31:13,986 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 70 transitions, 261 flow [2025-03-08 17:31:13,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:13,986 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:31:13,986 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:31:13,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 17:31:13,986 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:31:13,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:31:13,986 INFO L85 PathProgramCache]: Analyzing trace with hash 879340076, now seen corresponding path program 3 times [2025-03-08 17:31:13,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:31:13,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915655656] [2025-03-08 17:31:13,987 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:31:13,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:31:13,998 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 47 statements into 1 equivalence classes. [2025-03-08 17:31:14,009 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-03-08 17:31:14,010 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-08 17:31:14,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:31:14,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:31:14,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:31:14,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915655656] [2025-03-08 17:31:14,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915655656] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:31:14,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:31:14,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 17:31:14,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498258112] [2025-03-08 17:31:14,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:31:14,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 17:31:14,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:31:14,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 17:31:14,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 17:31:14,076 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2025-03-08 17:31:14,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 70 transitions, 261 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:14,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:31:14,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2025-03-08 17:31:14,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:31:14,200 INFO L124 PetriNetUnfolderBase]: 536/1092 cut-off events. [2025-03-08 17:31:14,201 INFO L125 PetriNetUnfolderBase]: For 503/505 co-relation queries the response was YES. [2025-03-08 17:31:14,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2869 conditions, 1092 events. 536/1092 cut-off events. For 503/505 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5396 event pairs, 334 based on Foata normal form. 10/1093 useless extension candidates. Maximal degree in co-relation 1287. Up to 753 conditions per place. [2025-03-08 17:31:14,206 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 64 selfloop transitions, 2 changer transitions 4/83 dead transitions. [2025-03-08 17:31:14,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 83 transitions, 453 flow [2025-03-08 17:31:14,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 17:31:14,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-08 17:31:14,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2025-03-08 17:31:14,207 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2025-03-08 17:31:14,208 INFO L175 Difference]: Start difference. First operand has 70 places, 70 transitions, 261 flow. Second operand 3 states and 87 transitions. [2025-03-08 17:31:14,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 83 transitions, 453 flow [2025-03-08 17:31:14,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 83 transitions, 448 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-08 17:31:14,214 INFO L231 Difference]: Finished difference. Result has 72 places, 70 transitions, 264 flow [2025-03-08 17:31:14,214 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=72, PETRI_TRANSITIONS=70} [2025-03-08 17:31:14,215 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 16 predicate places. [2025-03-08 17:31:14,215 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 70 transitions, 264 flow [2025-03-08 17:31:14,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:14,215 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:31:14,215 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:31:14,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 17:31:14,216 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:31:14,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:31:14,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1944676580, now seen corresponding path program 4 times [2025-03-08 17:31:14,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:31:14,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886346121] [2025-03-08 17:31:14,217 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 17:31:14,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:31:14,227 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 47 statements into 2 equivalence classes. [2025-03-08 17:31:14,232 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 36 of 47 statements. [2025-03-08 17:31:14,232 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-08 17:31:14,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:31:14,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:31:14,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:31:14,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886346121] [2025-03-08 17:31:14,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886346121] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:31:14,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:31:14,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 17:31:14,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698177121] [2025-03-08 17:31:14,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:31:14,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:31:14,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:31:14,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:31:14,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:31:14,313 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 54 [2025-03-08 17:31:14,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 264 flow. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:14,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:31:14,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 54 [2025-03-08 17:31:14,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:31:14,677 INFO L124 PetriNetUnfolderBase]: 1158/2176 cut-off events. [2025-03-08 17:31:14,678 INFO L125 PetriNetUnfolderBase]: For 1119/1119 co-relation queries the response was YES. [2025-03-08 17:31:14,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5975 conditions, 2176 events. 1158/2176 cut-off events. For 1119/1119 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 11697 event pairs, 108 based on Foata normal form. 0/2148 useless extension candidates. Maximal degree in co-relation 2382. Up to 818 conditions per place. [2025-03-08 17:31:14,688 INFO L140 encePairwiseOnDemand]: 38/54 looper letters, 144 selfloop transitions, 45 changer transitions 7/203 dead transitions. [2025-03-08 17:31:14,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 203 transitions, 1169 flow [2025-03-08 17:31:14,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 17:31:14,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-08 17:31:14,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 214 transitions. [2025-03-08 17:31:14,690 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3962962962962963 [2025-03-08 17:31:14,690 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 264 flow. Second operand 10 states and 214 transitions. [2025-03-08 17:31:14,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 203 transitions, 1169 flow [2025-03-08 17:31:14,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 203 transitions, 1155 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-08 17:31:14,696 INFO L231 Difference]: Finished difference. Result has 85 places, 105 transitions, 608 flow [2025-03-08 17:31:14,696 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=608, PETRI_PLACES=85, PETRI_TRANSITIONS=105} [2025-03-08 17:31:14,697 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 29 predicate places. [2025-03-08 17:31:14,697 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 105 transitions, 608 flow [2025-03-08 17:31:14,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:14,697 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:31:14,697 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:31:14,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 17:31:14,697 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:31:14,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:31:14,698 INFO L85 PathProgramCache]: Analyzing trace with hash 2050864592, now seen corresponding path program 5 times [2025-03-08 17:31:14,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:31:14,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197909274] [2025-03-08 17:31:14,698 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 17:31:14,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:31:14,707 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 47 statements into 1 equivalence classes. [2025-03-08 17:31:14,712 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-03-08 17:31:14,712 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:31:14,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:31:14,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:31:14,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:31:14,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197909274] [2025-03-08 17:31:14,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197909274] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:31:14,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:31:14,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 17:31:14,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406951120] [2025-03-08 17:31:14,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:31:14,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 17:31:14,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:31:14,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 17:31:14,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 17:31:14,755 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2025-03-08 17:31:14,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 105 transitions, 608 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:14,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:31:14,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2025-03-08 17:31:14,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:31:14,919 INFO L124 PetriNetUnfolderBase]: 862/1735 cut-off events. [2025-03-08 17:31:14,919 INFO L125 PetriNetUnfolderBase]: For 2669/2707 co-relation queries the response was YES. [2025-03-08 17:31:14,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5598 conditions, 1735 events. 862/1735 cut-off events. For 2669/2707 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9483 event pairs, 482 based on Foata normal form. 26/1743 useless extension candidates. Maximal degree in co-relation 3385. Up to 1255 conditions per place. [2025-03-08 17:31:14,928 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 100 selfloop transitions, 2 changer transitions 1/125 dead transitions. [2025-03-08 17:31:14,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 125 transitions, 914 flow [2025-03-08 17:31:14,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 17:31:14,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-08 17:31:14,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2025-03-08 17:31:14,929 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5432098765432098 [2025-03-08 17:31:14,929 INFO L175 Difference]: Start difference. First operand has 85 places, 105 transitions, 608 flow. Second operand 3 states and 88 transitions. [2025-03-08 17:31:14,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 125 transitions, 914 flow [2025-03-08 17:31:14,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 125 transitions, 864 flow, removed 25 selfloop flow, removed 0 redundant places. [2025-03-08 17:31:14,940 INFO L231 Difference]: Finished difference. Result has 88 places, 103 transitions, 558 flow [2025-03-08 17:31:14,940 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=558, PETRI_PLACES=88, PETRI_TRANSITIONS=103} [2025-03-08 17:31:14,941 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 32 predicate places. [2025-03-08 17:31:14,941 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 103 transitions, 558 flow [2025-03-08 17:31:14,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:14,941 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:31:14,941 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:31:14,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 17:31:14,941 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:31:14,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:31:14,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1234153840, now seen corresponding path program 6 times [2025-03-08 17:31:14,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:31:14,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526866627] [2025-03-08 17:31:14,942 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 17:31:14,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:31:14,948 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 47 statements into 1 equivalence classes. [2025-03-08 17:31:14,954 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-03-08 17:31:14,954 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-08 17:31:14,954 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:31:15,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:31:15,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:31:15,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526866627] [2025-03-08 17:31:15,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526866627] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:31:15,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:31:15,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 17:31:15,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412467411] [2025-03-08 17:31:15,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:31:15,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 17:31:15,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:31:15,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 17:31:15,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 17:31:15,096 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2025-03-08 17:31:15,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 103 transitions, 558 flow. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:15,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:31:15,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2025-03-08 17:31:15,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:31:15,427 INFO L124 PetriNetUnfolderBase]: 857/1686 cut-off events. [2025-03-08 17:31:15,428 INFO L125 PetriNetUnfolderBase]: For 2122/2146 co-relation queries the response was YES. [2025-03-08 17:31:15,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5403 conditions, 1686 events. 857/1686 cut-off events. For 2122/2146 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 9126 event pairs, 259 based on Foata normal form. 9/1664 useless extension candidates. Maximal degree in co-relation 5112. Up to 556 conditions per place. [2025-03-08 17:31:15,438 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 97 selfloop transitions, 9 changer transitions 63/189 dead transitions. [2025-03-08 17:31:15,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 189 transitions, 1367 flow [2025-03-08 17:31:15,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 17:31:15,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-08 17:31:15,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2025-03-08 17:31:15,439 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41898148148148145 [2025-03-08 17:31:15,439 INFO L175 Difference]: Start difference. First operand has 88 places, 103 transitions, 558 flow. Second operand 8 states and 181 transitions. [2025-03-08 17:31:15,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 189 transitions, 1367 flow [2025-03-08 17:31:15,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 189 transitions, 1355 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-08 17:31:15,450 INFO L231 Difference]: Finished difference. Result has 94 places, 97 transitions, 545 flow [2025-03-08 17:31:15,450 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=545, PETRI_PLACES=94, PETRI_TRANSITIONS=97} [2025-03-08 17:31:15,451 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 38 predicate places. [2025-03-08 17:31:15,451 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 97 transitions, 545 flow [2025-03-08 17:31:15,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:15,451 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:31:15,451 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:31:15,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 17:31:15,452 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:31:15,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:31:15,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1067906654, now seen corresponding path program 7 times [2025-03-08 17:31:15,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:31:15,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069811181] [2025-03-08 17:31:15,452 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 17:31:15,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:31:15,458 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-03-08 17:31:15,464 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-03-08 17:31:15,464 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:31:15,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:31:15,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:31:15,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:31:15,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069811181] [2025-03-08 17:31:15,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069811181] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:31:15,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:31:15,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:31:15,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239424359] [2025-03-08 17:31:15,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:31:15,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:31:15,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:31:15,590 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:31:15,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:31:15,608 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2025-03-08 17:31:15,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 97 transitions, 545 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:15,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:31:15,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2025-03-08 17:31:15,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:31:15,815 INFO L124 PetriNetUnfolderBase]: 558/1188 cut-off events. [2025-03-08 17:31:15,815 INFO L125 PetriNetUnfolderBase]: For 1430/1438 co-relation queries the response was YES. [2025-03-08 17:31:15,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3786 conditions, 1188 events. 558/1188 cut-off events. For 1430/1438 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 6104 event pairs, 111 based on Foata normal form. 6/1168 useless extension candidates. Maximal degree in co-relation 3758. Up to 897 conditions per place. [2025-03-08 17:31:15,822 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 78 selfloop transitions, 13 changer transitions 6/117 dead transitions. [2025-03-08 17:31:15,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 117 transitions, 811 flow [2025-03-08 17:31:15,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 17:31:15,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-08 17:31:15,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2025-03-08 17:31:15,823 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45185185185185184 [2025-03-08 17:31:15,823 INFO L175 Difference]: Start difference. First operand has 94 places, 97 transitions, 545 flow. Second operand 5 states and 122 transitions. [2025-03-08 17:31:15,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 117 transitions, 811 flow [2025-03-08 17:31:15,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 117 transitions, 765 flow, removed 8 selfloop flow, removed 10 redundant places. [2025-03-08 17:31:15,830 INFO L231 Difference]: Finished difference. Result has 88 places, 98 transitions, 545 flow [2025-03-08 17:31:15,831 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=545, PETRI_PLACES=88, PETRI_TRANSITIONS=98} [2025-03-08 17:31:15,832 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 32 predicate places. [2025-03-08 17:31:15,832 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 98 transitions, 545 flow [2025-03-08 17:31:15,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:15,832 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:31:15,832 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:31:15,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 17:31:15,833 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:31:15,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:31:15,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1078636822, now seen corresponding path program 8 times [2025-03-08 17:31:15,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:31:15,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860986757] [2025-03-08 17:31:15,834 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:31:15,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:31:15,840 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 47 statements into 1 equivalence classes. [2025-03-08 17:31:15,846 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-03-08 17:31:15,846 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:31:15,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:31:15,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:31:15,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:31:15,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860986757] [2025-03-08 17:31:15,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860986757] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:31:15,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:31:15,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:31:15,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769556247] [2025-03-08 17:31:15,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:31:15,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:31:15,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:31:15,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:31:15,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:31:15,955 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2025-03-08 17:31:15,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 98 transitions, 545 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:15,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:31:15,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2025-03-08 17:31:15,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:31:16,129 INFO L124 PetriNetUnfolderBase]: 518/1110 cut-off events. [2025-03-08 17:31:16,129 INFO L125 PetriNetUnfolderBase]: For 1289/1297 co-relation queries the response was YES. [2025-03-08 17:31:16,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3362 conditions, 1110 events. 518/1110 cut-off events. For 1289/1297 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5597 event pairs, 109 based on Foata normal form. 6/1090 useless extension candidates. Maximal degree in co-relation 3171. Up to 809 conditions per place. [2025-03-08 17:31:16,135 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 76 selfloop transitions, 14 changer transitions 6/116 dead transitions. [2025-03-08 17:31:16,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 116 transitions, 781 flow [2025-03-08 17:31:16,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 17:31:16,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-08 17:31:16,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2025-03-08 17:31:16,137 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45925925925925926 [2025-03-08 17:31:16,137 INFO L175 Difference]: Start difference. First operand has 88 places, 98 transitions, 545 flow. Second operand 5 states and 124 transitions. [2025-03-08 17:31:16,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 116 transitions, 781 flow [2025-03-08 17:31:16,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 116 transitions, 762 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-03-08 17:31:16,143 INFO L231 Difference]: Finished difference. Result has 90 places, 95 transitions, 536 flow [2025-03-08 17:31:16,143 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=536, PETRI_PLACES=90, PETRI_TRANSITIONS=95} [2025-03-08 17:31:16,145 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 34 predicate places. [2025-03-08 17:31:16,145 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 95 transitions, 536 flow [2025-03-08 17:31:16,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:16,146 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:31:16,146 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:31:16,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 17:31:16,146 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:31:16,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:31:16,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1147917703, now seen corresponding path program 1 times [2025-03-08 17:31:16,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:31:16,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541084730] [2025-03-08 17:31:16,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:31:16,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:31:16,154 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-03-08 17:31:16,160 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-03-08 17:31:16,161 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:31:16,161 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:31:16,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:31:16,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:31:16,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541084730] [2025-03-08 17:31:16,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541084730] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:31:16,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:31:16,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:31:16,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394018592] [2025-03-08 17:31:16,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:31:16,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:31:16,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:31:16,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:31:16,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:31:16,210 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2025-03-08 17:31:16,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 95 transitions, 536 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:16,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:31:16,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2025-03-08 17:31:16,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:31:16,360 INFO L124 PetriNetUnfolderBase]: 501/1045 cut-off events. [2025-03-08 17:31:16,360 INFO L125 PetriNetUnfolderBase]: For 1215/1229 co-relation queries the response was YES. [2025-03-08 17:31:16,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3121 conditions, 1045 events. 501/1045 cut-off events. For 1215/1229 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4892 event pairs, 89 based on Foata normal form. 24/1061 useless extension candidates. Maximal degree in co-relation 2868. Up to 545 conditions per place. [2025-03-08 17:31:16,366 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 86 selfloop transitions, 17 changer transitions 1/113 dead transitions. [2025-03-08 17:31:16,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 113 transitions, 784 flow [2025-03-08 17:31:16,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 17:31:16,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-08 17:31:16,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2025-03-08 17:31:16,367 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42962962962962964 [2025-03-08 17:31:16,367 INFO L175 Difference]: Start difference. First operand has 90 places, 95 transitions, 536 flow. Second operand 5 states and 116 transitions. [2025-03-08 17:31:16,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 113 transitions, 784 flow [2025-03-08 17:31:16,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 113 transitions, 732 flow, removed 7 selfloop flow, removed 6 redundant places. [2025-03-08 17:31:16,372 INFO L231 Difference]: Finished difference. Result has 89 places, 88 transitions, 506 flow [2025-03-08 17:31:16,372 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=506, PETRI_PLACES=89, PETRI_TRANSITIONS=88} [2025-03-08 17:31:16,373 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 33 predicate places. [2025-03-08 17:31:16,373 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 88 transitions, 506 flow [2025-03-08 17:31:16,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:16,374 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:31:16,374 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:31:16,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 17:31:16,375 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:31:16,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:31:16,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1361046205, now seen corresponding path program 1 times [2025-03-08 17:31:16,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:31:16,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320342979] [2025-03-08 17:31:16,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:31:16,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:31:16,381 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-03-08 17:31:16,387 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-03-08 17:31:16,388 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:31:16,388 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:31:16,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:31:16,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:31:16,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320342979] [2025-03-08 17:31:16,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320342979] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:31:16,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:31:16,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 17:31:16,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206191035] [2025-03-08 17:31:16,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:31:16,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 17:31:16,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:31:16,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 17:31:16,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2025-03-08 17:31:16,493 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2025-03-08 17:31:16,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 88 transitions, 506 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:16,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:31:16,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2025-03-08 17:31:16,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:31:16,711 INFO L124 PetriNetUnfolderBase]: 449/957 cut-off events. [2025-03-08 17:31:16,711 INFO L125 PetriNetUnfolderBase]: For 1314/1328 co-relation queries the response was YES. [2025-03-08 17:31:16,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2939 conditions, 957 events. 449/957 cut-off events. For 1314/1328 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 4490 event pairs, 145 based on Foata normal form. 12/958 useless extension candidates. Maximal degree in co-relation 1651. Up to 331 conditions per place. [2025-03-08 17:31:16,716 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 73 selfloop transitions, 16 changer transitions 20/120 dead transitions. [2025-03-08 17:31:16,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 120 transitions, 830 flow [2025-03-08 17:31:16,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 17:31:16,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-08 17:31:16,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2025-03-08 17:31:16,718 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2025-03-08 17:31:16,718 INFO L175 Difference]: Start difference. First operand has 89 places, 88 transitions, 506 flow. Second operand 7 states and 147 transitions. [2025-03-08 17:31:16,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 120 transitions, 830 flow [2025-03-08 17:31:16,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 120 transitions, 820 flow, removed 5 selfloop flow, removed 0 redundant places. [2025-03-08 17:31:16,724 INFO L231 Difference]: Finished difference. Result has 97 places, 78 transitions, 460 flow [2025-03-08 17:31:16,724 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=460, PETRI_PLACES=97, PETRI_TRANSITIONS=78} [2025-03-08 17:31:16,726 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 41 predicate places. [2025-03-08 17:31:16,726 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 78 transitions, 460 flow [2025-03-08 17:31:16,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:16,726 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:31:16,726 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:31:16,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 17:31:16,726 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:31:16,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:31:16,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1612802183, now seen corresponding path program 2 times [2025-03-08 17:31:16,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:31:16,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253440157] [2025-03-08 17:31:16,727 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:31:16,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:31:16,733 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 48 statements into 1 equivalence classes. [2025-03-08 17:31:16,739 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-03-08 17:31:16,740 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:31:16,740 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:31:16,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:31:16,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:31:16,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253440157] [2025-03-08 17:31:16,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253440157] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:31:16,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:31:16,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:31:16,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455144983] [2025-03-08 17:31:16,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:31:16,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:31:16,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:31:16,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:31:16,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:31:16,786 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2025-03-08 17:31:16,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 78 transitions, 460 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:16,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:31:16,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2025-03-08 17:31:16,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:31:16,893 INFO L124 PetriNetUnfolderBase]: 212/469 cut-off events. [2025-03-08 17:31:16,893 INFO L125 PetriNetUnfolderBase]: For 644/648 co-relation queries the response was YES. [2025-03-08 17:31:16,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1383 conditions, 469 events. 212/469 cut-off events. For 644/648 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1602 event pairs, 48 based on Foata normal form. 12/477 useless extension candidates. Maximal degree in co-relation 1361. Up to 188 conditions per place. [2025-03-08 17:31:16,896 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 59 selfloop transitions, 7 changer transitions 2/75 dead transitions. [2025-03-08 17:31:16,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 75 transitions, 475 flow [2025-03-08 17:31:16,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 17:31:16,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-08 17:31:16,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2025-03-08 17:31:16,897 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3851851851851852 [2025-03-08 17:31:16,897 INFO L175 Difference]: Start difference. First operand has 97 places, 78 transitions, 460 flow. Second operand 5 states and 104 transitions. [2025-03-08 17:31:16,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 75 transitions, 475 flow [2025-03-08 17:31:16,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 75 transitions, 393 flow, removed 9 selfloop flow, removed 19 redundant places. [2025-03-08 17:31:16,899 INFO L231 Difference]: Finished difference. Result has 76 places, 56 transitions, 211 flow [2025-03-08 17:31:16,899 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=211, PETRI_PLACES=76, PETRI_TRANSITIONS=56} [2025-03-08 17:31:16,900 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 20 predicate places. [2025-03-08 17:31:16,900 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 56 transitions, 211 flow [2025-03-08 17:31:16,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:16,900 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:31:16,900 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:31:16,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 17:31:16,900 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:31:16,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:31:16,901 INFO L85 PathProgramCache]: Analyzing trace with hash 454587439, now seen corresponding path program 2 times [2025-03-08 17:31:16,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:31:16,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127704944] [2025-03-08 17:31:16,901 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:31:16,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:31:16,907 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 48 statements into 1 equivalence classes. [2025-03-08 17:31:16,911 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-03-08 17:31:16,911 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:31:16,911 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:31:16,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:31:16,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:31:16,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127704944] [2025-03-08 17:31:16,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127704944] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:31:16,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:31:16,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 17:31:16,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762422803] [2025-03-08 17:31:16,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:31:16,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 17:31:16,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:31:16,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 17:31:16,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2025-03-08 17:31:17,020 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2025-03-08 17:31:17,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 56 transitions, 211 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:17,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:31:17,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2025-03-08 17:31:17,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:31:17,131 INFO L124 PetriNetUnfolderBase]: 106/263 cut-off events. [2025-03-08 17:31:17,131 INFO L125 PetriNetUnfolderBase]: For 150/150 co-relation queries the response was YES. [2025-03-08 17:31:17,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 677 conditions, 263 events. 106/263 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 862 event pairs, 40 based on Foata normal form. 10/273 useless extension candidates. Maximal degree in co-relation 668. Up to 86 conditions per place. [2025-03-08 17:31:17,132 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 0 selfloop transitions, 0 changer transitions 51/51 dead transitions. [2025-03-08 17:31:17,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 51 transitions, 269 flow [2025-03-08 17:31:17,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 17:31:17,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-08 17:31:17,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 104 transitions. [2025-03-08 17:31:17,133 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2751322751322751 [2025-03-08 17:31:17,133 INFO L175 Difference]: Start difference. First operand has 76 places, 56 transitions, 211 flow. Second operand 7 states and 104 transitions. [2025-03-08 17:31:17,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 51 transitions, 269 flow [2025-03-08 17:31:17,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 51 transitions, 242 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-03-08 17:31:17,134 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2025-03-08 17:31:17,134 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=58, PETRI_TRANSITIONS=0} [2025-03-08 17:31:17,135 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2025-03-08 17:31:17,135 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2025-03-08 17:31:17,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:17,137 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-03-08 17:31:17,137 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-03-08 17:31:17,137 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-03-08 17:31:17,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 17:31:17,138 INFO L422 BasicCegarLoop]: Path program histogram: [8, 2, 2] [2025-03-08 17:31:17,140 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-08 17:31:17,140 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-08 17:31:17,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.03 05:31:17 BasicIcfg [2025-03-08 17:31:17,143 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-08 17:31:17,144 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-08 17:31:17,144 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-08 17:31:17,144 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-08 17:31:17,144 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:31:12" (3/4) ... [2025-03-08 17:31:17,147 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-08 17:31:17,149 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-03-08 17:31:17,149 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-03-08 17:31:17,153 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2025-03-08 17:31:17,153 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2025-03-08 17:31:17,153 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-08 17:31:17,154 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-08 17:31:17,205 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-08 17:31:17,205 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-08 17:31:17,205 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-08 17:31:17,206 INFO L158 Benchmark]: Toolchain (without parser) took 5329.63ms. Allocated memory was 142.6MB in the beginning and 335.5MB in the end (delta: 192.9MB). Free memory was 108.2MB in the beginning and 155.8MB in the end (delta: -47.6MB). Peak memory consumption was 145.3MB. Max. memory is 16.1GB. [2025-03-08 17:31:17,206 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 167.8MB. Free memory is still 95.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 17:31:17,206 INFO L158 Benchmark]: CACSL2BoogieTranslator took 180.04ms. Allocated memory is still 142.6MB. Free memory was 107.1MB in the beginning and 95.8MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 17:31:17,206 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.26ms. Allocated memory is still 142.6MB. Free memory was 95.8MB in the beginning and 94.1MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 17:31:17,206 INFO L158 Benchmark]: Boogie Preprocessor took 28.74ms. Allocated memory is still 142.6MB. Free memory was 94.1MB in the beginning and 93.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 17:31:17,207 INFO L158 Benchmark]: IcfgBuilder took 410.74ms. Allocated memory is still 142.6MB. Free memory was 93.0MB in the beginning and 64.5MB in the end (delta: 28.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-08 17:31:17,207 INFO L158 Benchmark]: TraceAbstraction took 4616.81ms. Allocated memory was 142.6MB in the beginning and 335.5MB in the end (delta: 192.9MB). Free memory was 63.4MB in the beginning and 164.2MB in the end (delta: -100.8MB). Peak memory consumption was 95.0MB. Max. memory is 16.1GB. [2025-03-08 17:31:17,207 INFO L158 Benchmark]: Witness Printer took 61.59ms. Allocated memory is still 335.5MB. Free memory was 164.2MB in the beginning and 155.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 17:31:17,208 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 167.8MB. Free memory is still 95.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 180.04ms. Allocated memory is still 142.6MB. Free memory was 107.1MB in the beginning and 95.8MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.26ms. Allocated memory is still 142.6MB. Free memory was 95.8MB in the beginning and 94.1MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.74ms. Allocated memory is still 142.6MB. Free memory was 94.1MB in the beginning and 93.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 410.74ms. Allocated memory is still 142.6MB. Free memory was 93.0MB in the beginning and 64.5MB in the end (delta: 28.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 4616.81ms. Allocated memory was 142.6MB in the beginning and 335.5MB in the end (delta: 192.9MB). Free memory was 63.4MB in the beginning and 164.2MB in the end (delta: -100.8MB). Peak memory consumption was 95.0MB. Max. memory is 16.1GB. * Witness Printer took 61.59ms. Allocated memory is still 335.5MB. Free memory was 164.2MB in the beginning and 155.8MB 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: 98]: 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 5 procedures, 83 locations, 86 edges, 3 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: 4.5s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 645 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 585 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 42 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2723 IncrementalHoareTripleChecker+Invalid, 2765 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 42 mSolverCounterUnsat, 2 mSDtfsCounter, 2723 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=608occurred in iteration=4, InterpolantAutomatonStates: 73, 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, 1.2s InterpolantComputationTime, 568 NumberOfCodeBlocks, 557 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 556 ConstructedInterpolants, 0 QuantifiedInterpolants, 1232 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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! [2025-03-08 17:31:17,218 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