./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2a508120cc7913f10b79dda7ca65a8b88f829725798d520aee5d1c1d04a1fc13 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:12:11,974 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:12:12,022 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 01:12:12,026 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:12:12,026 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:12:12,047 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:12:12,047 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:12:12,047 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:12:12,047 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:12:12,047 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:12:12,047 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:12:12,047 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:12:12,048 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:12:12,048 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:12:12,048 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:12:12,048 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:12:12,048 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:12:12,048 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 01:12:12,048 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:12:12,048 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 01:12:12,048 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:12:12,048 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:12:12,048 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:12:12,048 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:12:12,048 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 01:12:12,048 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:12:12,048 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:12:12,050 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:12:12,050 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:12:12,050 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:12:12,050 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:12:12,050 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:12:12,051 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:12:12,051 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:12:12,051 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:12:12,051 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:12:12,051 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:12:12,051 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:12:12,051 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:12:12,051 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:12:12,051 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:12:12,051 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:12:12,051 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:12:12,051 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a508120cc7913f10b79dda7ca65a8b88f829725798d520aee5d1c1d04a1fc13 [2025-02-08 01:12:12,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:12:12,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:12:12,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:12:12,265 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:12:12,265 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:12:12,266 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c [2025-02-08 01:12:13,460 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/79d0d98a1/ec8a4a62867041dab3720c6d0d54a533/FLAGabc64dba5 [2025-02-08 01:12:13,696 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:12:13,697 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c [2025-02-08 01:12:13,703 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/79d0d98a1/ec8a4a62867041dab3720c6d0d54a533/FLAGabc64dba5 [2025-02-08 01:12:13,715 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/79d0d98a1/ec8a4a62867041dab3720c6d0d54a533 [2025-02-08 01:12:13,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:12:13,717 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:12:13,718 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:12:13,718 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:12:13,721 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:12:13,722 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:12:13" (1/1) ... [2025-02-08 01:12:13,722 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15a184f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:13, skipping insertion in model container [2025-02-08 01:12:13,722 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:12:13" (1/1) ... [2025-02-08 01:12:13,732 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:12:13,860 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c[3111,3124] [2025-02-08 01:12:13,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:12:13,878 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:12:13,896 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c[3111,3124] [2025-02-08 01:12:13,901 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:12:13,915 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:12:13,916 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:13 WrapperNode [2025-02-08 01:12:13,916 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:12:13,917 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:12:13,917 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:12:13,917 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:12:13,921 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:13" (1/1) ... [2025-02-08 01:12:13,928 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:13" (1/1) ... [2025-02-08 01:12:13,950 INFO L138 Inliner]: procedures = 22, calls = 16, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 169 [2025-02-08 01:12:13,951 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:12:13,951 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:12:13,951 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:12:13,952 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:12:13,957 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:13" (1/1) ... [2025-02-08 01:12:13,957 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:13" (1/1) ... [2025-02-08 01:12:13,959 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:13" (1/1) ... [2025-02-08 01:12:13,975 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-08 01:12:13,977 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:13" (1/1) ... [2025-02-08 01:12:13,977 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:13" (1/1) ... [2025-02-08 01:12:13,982 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:13" (1/1) ... [2025-02-08 01:12:13,983 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:13" (1/1) ... [2025-02-08 01:12:13,986 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:13" (1/1) ... [2025-02-08 01:12:13,990 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:13" (1/1) ... [2025-02-08 01:12:13,991 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:12:13,992 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:12:13,992 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:12:13,992 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:12:13,992 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:13" (1/1) ... [2025-02-08 01:12:13,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:12:14,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:14,024 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 01:12:14,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 01:12:14,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:12:14,046 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 01:12:14,046 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 01:12:14,046 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 01:12:14,046 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 01:12:14,046 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 01:12:14,047 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 01:12:14,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:12:14,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:12:14,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:12:14,048 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 01:12:14,113 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:12:14,114 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:12:14,205 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L44-7: #t~ite2#1 := #t~ret1#1; [2025-02-08 01:12:14,206 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L44-8: assume { :end_inline_minus } true;assume -2147483648 <= #t~ret1#1 && #t~ret1#1 <= 2147483647; [2025-02-08 01:12:14,206 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L44-9: havoc minus_#in~a#1, minus_#in~b#1; [2025-02-08 01:12:14,206 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L44-10: havoc minus_~a#1, minus_~b#1; [2025-02-08 01:12:14,206 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L44-11: #t~ret1#1 := minus_#res#1; [2025-02-08 01:12:14,249 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L50-7: #t~ite6#1 := #t~ret5#1; [2025-02-08 01:12:14,249 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L50-8: assume { :end_inline_minus } true;assume -2147483648 <= #t~ret5#1 && #t~ret5#1 <= 2147483647; [2025-02-08 01:12:14,249 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L50-9: havoc minus_#in~a#1, minus_#in~b#1; [2025-02-08 01:12:14,249 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L50-10: havoc minus_~a#1, minus_~b#1; [2025-02-08 01:12:14,249 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L50-11: #t~ret5#1 := minus_#res#1; [2025-02-08 01:12:14,299 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L56-7: #t~ite10#1 := #t~ret9#1; [2025-02-08 01:12:14,299 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L56-8: assume { :end_inline_minus } true;assume -2147483648 <= #t~ret9#1 && #t~ret9#1 <= 2147483647; [2025-02-08 01:12:14,299 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L56-9: havoc minus_#in~a#1, minus_#in~b#1; [2025-02-08 01:12:14,299 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L56-10: havoc minus_~a#1, minus_~b#1; [2025-02-08 01:12:14,299 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L56-11: #t~ret9#1 := minus_#res#1; [2025-02-08 01:12:14,356 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 01:12:14,356 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:12:14,490 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:12:14,490 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:12:14,490 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:12:14 BoogieIcfgContainer [2025-02-08 01:12:14,490 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:12:14,492 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:12:14,492 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:12:14,495 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:12:14,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:12:13" (1/3) ... [2025-02-08 01:12:14,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68e96782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:12:14, skipping insertion in model container [2025-02-08 01:12:14,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:13" (2/3) ... [2025-02-08 01:12:14,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68e96782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:12:14, skipping insertion in model container [2025-02-08 01:12:14,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:12:14" (3/3) ... [2025-02-08 01:12:14,496 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-exp-term-subst.wvr.c [2025-02-08 01:12:14,506 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:12:14,508 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-exp-term-subst.wvr.c that has 4 procedures, 38 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-02-08 01:12:14,508 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 01:12:14,546 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-08 01:12:14,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 43 transitions, 107 flow [2025-02-08 01:12:14,591 INFO L124 PetriNetUnfolderBase]: 6/40 cut-off events. [2025-02-08 01:12:14,595 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-08 01:12:14,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 40 events. 6/40 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 86 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2025-02-08 01:12:14,600 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 43 transitions, 107 flow [2025-02-08 01:12:14,603 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 39 transitions, 96 flow [2025-02-08 01:12:14,612 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:12:14,624 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;@236547c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:12:14,625 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-08 01:12:14,640 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 01:12:14,640 INFO L124 PetriNetUnfolderBase]: 6/38 cut-off events. [2025-02-08 01:12:14,640 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-08 01:12:14,640 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:14,641 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:12:14,641 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:12:14,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:14,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1373584690, now seen corresponding path program 1 times [2025-02-08 01:12:14,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:14,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256478148] [2025-02-08 01:12:14,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:12:14,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:14,712 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 01:12:14,765 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 01:12:14,766 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:12:14,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:15,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:15,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:15,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256478148] [2025-02-08 01:12:15,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256478148] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:15,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:15,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 01:12:15,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949455425] [2025-02-08 01:12:15,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:15,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:12:15,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:15,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:12:15,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:12:15,239 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2025-02-08 01:12:15,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 96 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:15,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:15,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2025-02-08 01:12:15,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:15,661 INFO L124 PetriNetUnfolderBase]: 1468/2161 cut-off events. [2025-02-08 01:12:15,661 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2025-02-08 01:12:15,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4394 conditions, 2161 events. 1468/2161 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 12141 event pairs, 573 based on Foata normal form. 1/1765 useless extension candidates. Maximal degree in co-relation 3966. Up to 1133 conditions per place. [2025-02-08 01:12:15,674 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 82 selfloop transitions, 16 changer transitions 12/121 dead transitions. [2025-02-08 01:12:15,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 121 transitions, 522 flow [2025-02-08 01:12:15,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:15,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:15,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 223 transitions. [2025-02-08 01:12:15,688 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6482558139534884 [2025-02-08 01:12:15,689 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 96 flow. Second operand 8 states and 223 transitions. [2025-02-08 01:12:15,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 121 transitions, 522 flow [2025-02-08 01:12:15,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 121 transitions, 482 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-02-08 01:12:15,701 INFO L231 Difference]: Finished difference. Result has 45 places, 51 transitions, 153 flow [2025-02-08 01:12:15,703 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=153, PETRI_PLACES=45, PETRI_TRANSITIONS=51} [2025-02-08 01:12:15,706 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2025-02-08 01:12:15,707 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 51 transitions, 153 flow [2025-02-08 01:12:15,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:15,707 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:15,707 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:12:15,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 01:12:15,708 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:12:15,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:15,709 INFO L85 PathProgramCache]: Analyzing trace with hash -455495941, now seen corresponding path program 1 times [2025-02-08 01:12:15,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:15,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654551121] [2025-02-08 01:12:15,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:12:15,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:15,722 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-08 01:12:15,739 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 01:12:15,740 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:12:15,740 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:15,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:15,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:15,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654551121] [2025-02-08 01:12:15,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654551121] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:15,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:15,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:12:15,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875212692] [2025-02-08 01:12:15,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:15,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:12:15,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:15,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:12:15,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:12:15,993 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2025-02-08 01:12:15,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 51 transitions, 153 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:15,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:15,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2025-02-08 01:12:15,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:16,444 INFO L124 PetriNetUnfolderBase]: 3017/4697 cut-off events. [2025-02-08 01:12:16,445 INFO L125 PetriNetUnfolderBase]: For 1147/1151 co-relation queries the response was YES. [2025-02-08 01:12:16,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10703 conditions, 4697 events. 3017/4697 cut-off events. For 1147/1151 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 30093 event pairs, 473 based on Foata normal form. 29/3951 useless extension candidates. Maximal degree in co-relation 3424. Up to 2133 conditions per place. [2025-02-08 01:12:16,467 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 107 selfloop transitions, 11 changer transitions 14/141 dead transitions. [2025-02-08 01:12:16,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 141 transitions, 697 flow [2025-02-08 01:12:16,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:12:16,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:12:16,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2025-02-08 01:12:16,470 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7441860465116279 [2025-02-08 01:12:16,471 INFO L175 Difference]: Start difference. First operand has 45 places, 51 transitions, 153 flow. Second operand 5 states and 160 transitions. [2025-02-08 01:12:16,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 141 transitions, 697 flow [2025-02-08 01:12:16,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 141 transitions, 697 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 01:12:16,477 INFO L231 Difference]: Finished difference. Result has 52 places, 57 transitions, 236 flow [2025-02-08 01:12:16,478 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=236, PETRI_PLACES=52, PETRI_TRANSITIONS=57} [2025-02-08 01:12:16,478 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2025-02-08 01:12:16,478 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 57 transitions, 236 flow [2025-02-08 01:12:16,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:16,479 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:16,479 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:12:16,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 01:12:16,479 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:12:16,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:16,480 INFO L85 PathProgramCache]: Analyzing trace with hash 662988195, now seen corresponding path program 2 times [2025-02-08 01:12:16,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:16,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930914158] [2025-02-08 01:12:16,481 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:12:16,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:16,490 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 1 equivalence classes. [2025-02-08 01:12:16,501 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 01:12:16,504 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:12:16,505 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:16,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:16,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:16,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930914158] [2025-02-08 01:12:16,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930914158] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:16,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:16,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:12:16,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886077303] [2025-02-08 01:12:16,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:16,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:12:16,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:16,633 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:12:16,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:12:16,639 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2025-02-08 01:12:16,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 57 transitions, 236 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:16,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:16,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2025-02-08 01:12:16,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:17,115 INFO L124 PetriNetUnfolderBase]: 3961/6528 cut-off events. [2025-02-08 01:12:17,115 INFO L125 PetriNetUnfolderBase]: For 5052/5058 co-relation queries the response was YES. [2025-02-08 01:12:17,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18172 conditions, 6528 events. 3961/6528 cut-off events. For 5052/5058 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 45695 event pairs, 734 based on Foata normal form. 222/6724 useless extension candidates. Maximal degree in co-relation 6242. Up to 3223 conditions per place. [2025-02-08 01:12:17,143 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 121 selfloop transitions, 18 changer transitions 2/148 dead transitions. [2025-02-08 01:12:17,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 148 transitions, 905 flow [2025-02-08 01:12:17,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:12:17,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:12:17,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 144 transitions. [2025-02-08 01:12:17,144 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6697674418604651 [2025-02-08 01:12:17,145 INFO L175 Difference]: Start difference. First operand has 52 places, 57 transitions, 236 flow. Second operand 5 states and 144 transitions. [2025-02-08 01:12:17,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 148 transitions, 905 flow [2025-02-08 01:12:17,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 148 transitions, 905 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 01:12:17,150 INFO L231 Difference]: Finished difference. Result has 58 places, 74 transitions, 447 flow [2025-02-08 01:12:17,151 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=447, PETRI_PLACES=58, PETRI_TRANSITIONS=74} [2025-02-08 01:12:17,151 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 15 predicate places. [2025-02-08 01:12:17,151 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 74 transitions, 447 flow [2025-02-08 01:12:17,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:17,151 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:17,151 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:12:17,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 01:12:17,152 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:12:17,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:17,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1061933081, now seen corresponding path program 1 times [2025-02-08 01:12:17,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:17,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292332290] [2025-02-08 01:12:17,152 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:12:17,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:17,160 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-08 01:12:17,166 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 01:12:17,166 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:12:17,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:17,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:17,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:17,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292332290] [2025-02-08 01:12:17,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292332290] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:17,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:17,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:12:17,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738181241] [2025-02-08 01:12:17,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:17,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:12:17,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:17,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:12:17,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:12:17,296 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2025-02-08 01:12:17,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 74 transitions, 447 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:17,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:17,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2025-02-08 01:12:17,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:17,900 INFO L124 PetriNetUnfolderBase]: 4908/8446 cut-off events. [2025-02-08 01:12:17,900 INFO L125 PetriNetUnfolderBase]: For 13791/13863 co-relation queries the response was YES. [2025-02-08 01:12:17,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27327 conditions, 8446 events. 4908/8446 cut-off events. For 13791/13863 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 65349 event pairs, 1206 based on Foata normal form. 224/8596 useless extension candidates. Maximal degree in co-relation 8906. Up to 1985 conditions per place. [2025-02-08 01:12:17,943 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 175 selfloop transitions, 33 changer transitions 30/248 dead transitions. [2025-02-08 01:12:17,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 248 transitions, 2006 flow [2025-02-08 01:12:17,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:12:17,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:12:17,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 207 transitions. [2025-02-08 01:12:17,944 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6877076411960132 [2025-02-08 01:12:17,944 INFO L175 Difference]: Start difference. First operand has 58 places, 74 transitions, 447 flow. Second operand 7 states and 207 transitions. [2025-02-08 01:12:17,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 248 transitions, 2006 flow [2025-02-08 01:12:17,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 248 transitions, 2006 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 01:12:18,012 INFO L231 Difference]: Finished difference. Result has 70 places, 101 transitions, 857 flow [2025-02-08 01:12:18,012 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=857, PETRI_PLACES=70, PETRI_TRANSITIONS=101} [2025-02-08 01:12:18,013 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 27 predicate places. [2025-02-08 01:12:18,013 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 101 transitions, 857 flow [2025-02-08 01:12:18,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:18,013 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:18,013 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:12:18,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 01:12:18,013 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:12:18,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:18,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1212074495, now seen corresponding path program 3 times [2025-02-08 01:12:18,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:18,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852112153] [2025-02-08 01:12:18,014 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:12:18,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:18,019 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 1 equivalence classes. [2025-02-08 01:12:18,027 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 01:12:18,028 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 01:12:18,028 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:18,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:18,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:18,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852112153] [2025-02-08 01:12:18,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852112153] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:18,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:18,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:12:18,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265102442] [2025-02-08 01:12:18,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:18,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:12:18,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:18,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:12:18,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:12:18,145 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2025-02-08 01:12:18,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 101 transitions, 857 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:18,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:18,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2025-02-08 01:12:18,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:18,857 INFO L124 PetriNetUnfolderBase]: 4863/8733 cut-off events. [2025-02-08 01:12:18,857 INFO L125 PetriNetUnfolderBase]: For 26262/26575 co-relation queries the response was YES. [2025-02-08 01:12:18,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32079 conditions, 8733 events. 4863/8733 cut-off events. For 26262/26575 co-relation queries the response was YES. Maximal size of possible extension queue 780. Compared 72019 event pairs, 1200 based on Foata normal form. 209/8831 useless extension candidates. Maximal degree in co-relation 21521. Up to 3383 conditions per place. [2025-02-08 01:12:18,918 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 148 selfloop transitions, 29 changer transitions 11/200 dead transitions. [2025-02-08 01:12:18,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 200 transitions, 1939 flow [2025-02-08 01:12:18,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:12:18,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:12:18,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 149 transitions. [2025-02-08 01:12:18,920 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6930232558139535 [2025-02-08 01:12:18,920 INFO L175 Difference]: Start difference. First operand has 70 places, 101 transitions, 857 flow. Second operand 5 states and 149 transitions. [2025-02-08 01:12:18,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 200 transitions, 1939 flow [2025-02-08 01:12:18,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 200 transitions, 1937 flow, removed 1 selfloop flow, removed 0 redundant places. [2025-02-08 01:12:18,944 INFO L231 Difference]: Finished difference. Result has 78 places, 116 transitions, 1165 flow [2025-02-08 01:12:18,945 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=855, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1165, PETRI_PLACES=78, PETRI_TRANSITIONS=116} [2025-02-08 01:12:18,945 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 35 predicate places. [2025-02-08 01:12:18,946 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 116 transitions, 1165 flow [2025-02-08 01:12:18,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:18,947 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:18,947 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:12:18,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 01:12:18,947 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:12:18,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:18,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1761162005, now seen corresponding path program 2 times [2025-02-08 01:12:18,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:18,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954479650] [2025-02-08 01:12:18,948 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:12:18,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:18,957 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 1 equivalence classes. [2025-02-08 01:12:18,971 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 01:12:18,972 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:12:18,972 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:19,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:19,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:19,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954479650] [2025-02-08 01:12:19,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954479650] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:19,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:19,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:12:19,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311800289] [2025-02-08 01:12:19,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:19,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:12:19,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:19,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:12:19,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:12:19,143 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2025-02-08 01:12:19,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 116 transitions, 1165 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:19,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:19,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2025-02-08 01:12:19,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:19,850 INFO L124 PetriNetUnfolderBase]: 6174/10997 cut-off events. [2025-02-08 01:12:19,850 INFO L125 PetriNetUnfolderBase]: For 42363/42375 co-relation queries the response was YES. [2025-02-08 01:12:19,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42759 conditions, 10997 events. 6174/10997 cut-off events. For 42363/42375 co-relation queries the response was YES. Maximal size of possible extension queue 943. Compared 92102 event pairs, 1421 based on Foata normal form. 50/11016 useless extension candidates. Maximal degree in co-relation 34443. Up to 4973 conditions per place. [2025-02-08 01:12:19,913 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 199 selfloop transitions, 30 changer transitions 10/246 dead transitions. [2025-02-08 01:12:19,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 246 transitions, 2706 flow [2025-02-08 01:12:19,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:12:19,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:12:19,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 150 transitions. [2025-02-08 01:12:19,915 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6976744186046512 [2025-02-08 01:12:19,915 INFO L175 Difference]: Start difference. First operand has 78 places, 116 transitions, 1165 flow. Second operand 5 states and 150 transitions. [2025-02-08 01:12:19,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 246 transitions, 2706 flow [2025-02-08 01:12:19,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 246 transitions, 2685 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-02-08 01:12:19,946 INFO L231 Difference]: Finished difference. Result has 85 places, 139 transitions, 1605 flow [2025-02-08 01:12:19,946 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1153, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1605, PETRI_PLACES=85, PETRI_TRANSITIONS=139} [2025-02-08 01:12:19,948 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 42 predicate places. [2025-02-08 01:12:19,948 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 139 transitions, 1605 flow [2025-02-08 01:12:19,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:19,948 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:19,948 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:12:19,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 01:12:19,948 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:12:19,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:19,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1595735005, now seen corresponding path program 4 times [2025-02-08 01:12:19,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:19,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337423563] [2025-02-08 01:12:19,950 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:12:19,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:19,956 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 23 statements into 2 equivalence classes. [2025-02-08 01:12:19,977 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 01:12:19,978 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:12:19,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:20,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:20,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:20,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337423563] [2025-02-08 01:12:20,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337423563] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:20,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:20,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 01:12:20,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384020518] [2025-02-08 01:12:20,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:20,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:12:20,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:20,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:12:20,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:12:20,284 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2025-02-08 01:12:20,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 139 transitions, 1605 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:20,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:20,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2025-02-08 01:12:20,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:21,238 INFO L124 PetriNetUnfolderBase]: 7011/12187 cut-off events. [2025-02-08 01:12:21,238 INFO L125 PetriNetUnfolderBase]: For 60691/61181 co-relation queries the response was YES. [2025-02-08 01:12:21,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49015 conditions, 12187 events. 7011/12187 cut-off events. For 60691/61181 co-relation queries the response was YES. Maximal size of possible extension queue 1033. Compared 100907 event pairs, 1893 based on Foata normal form. 209/12210 useless extension candidates. Maximal degree in co-relation 32802. Up to 6460 conditions per place. [2025-02-08 01:12:21,301 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 186 selfloop transitions, 50 changer transitions 5/256 dead transitions. [2025-02-08 01:12:21,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 256 transitions, 3215 flow [2025-02-08 01:12:21,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:12:21,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:12:21,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 163 transitions. [2025-02-08 01:12:21,302 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6317829457364341 [2025-02-08 01:12:21,302 INFO L175 Difference]: Start difference. First operand has 85 places, 139 transitions, 1605 flow. Second operand 6 states and 163 transitions. [2025-02-08 01:12:21,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 256 transitions, 3215 flow [2025-02-08 01:12:21,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 256 transitions, 3215 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 01:12:21,337 INFO L231 Difference]: Finished difference. Result has 93 places, 166 transitions, 2212 flow [2025-02-08 01:12:21,338 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1605, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2212, PETRI_PLACES=93, PETRI_TRANSITIONS=166} [2025-02-08 01:12:21,338 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 50 predicate places. [2025-02-08 01:12:21,338 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 166 transitions, 2212 flow [2025-02-08 01:12:21,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:21,338 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:21,339 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:12:21,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 01:12:21,339 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:12:21,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:21,339 INFO L85 PathProgramCache]: Analyzing trace with hash 703331729, now seen corresponding path program 3 times [2025-02-08 01:12:21,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:21,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532446731] [2025-02-08 01:12:21,339 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:12:21,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:21,344 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 1 equivalence classes. [2025-02-08 01:12:21,351 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 01:12:21,351 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 01:12:21,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:21,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:21,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:21,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532446731] [2025-02-08 01:12:21,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532446731] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:21,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:21,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:12:21,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089026229] [2025-02-08 01:12:21,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:21,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:12:21,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:21,444 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:12:21,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:12:21,454 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2025-02-08 01:12:21,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 166 transitions, 2212 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:21,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:21,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2025-02-08 01:12:21,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:22,540 INFO L124 PetriNetUnfolderBase]: 6192/11348 cut-off events. [2025-02-08 01:12:22,541 INFO L125 PetriNetUnfolderBase]: For 79467/80148 co-relation queries the response was YES. [2025-02-08 01:12:22,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51061 conditions, 11348 events. 6192/11348 cut-off events. For 79467/80148 co-relation queries the response was YES. Maximal size of possible extension queue 1026. Compared 99312 event pairs, 1661 based on Foata normal form. 494/11660 useless extension candidates. Maximal degree in co-relation 35509. Up to 3719 conditions per place. [2025-02-08 01:12:22,620 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 209 selfloop transitions, 44 changer transitions 16/287 dead transitions. [2025-02-08 01:12:22,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 287 transitions, 4164 flow [2025-02-08 01:12:22,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:12:22,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:12:22,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2025-02-08 01:12:22,622 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6325581395348837 [2025-02-08 01:12:22,622 INFO L175 Difference]: Start difference. First operand has 93 places, 166 transitions, 2212 flow. Second operand 5 states and 136 transitions. [2025-02-08 01:12:22,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 287 transitions, 4164 flow [2025-02-08 01:12:22,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 287 transitions, 4146 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-02-08 01:12:22,729 INFO L231 Difference]: Finished difference. Result has 99 places, 191 transitions, 2834 flow [2025-02-08 01:12:22,729 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2198, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2834, PETRI_PLACES=99, PETRI_TRANSITIONS=191} [2025-02-08 01:12:22,730 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 56 predicate places. [2025-02-08 01:12:22,730 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 191 transitions, 2834 flow [2025-02-08 01:12:22,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:22,730 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:22,730 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:12:22,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 01:12:22,730 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:12:22,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:22,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1259246723, now seen corresponding path program 5 times [2025-02-08 01:12:22,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:22,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231987054] [2025-02-08 01:12:22,731 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:12:22,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:22,737 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 23 statements into 1 equivalence classes. [2025-02-08 01:12:22,741 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 01:12:22,741 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:12:22,741 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:22,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:22,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:22,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231987054] [2025-02-08 01:12:22,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231987054] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:22,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:22,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:12:22,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884331600] [2025-02-08 01:12:22,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:22,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:12:22,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:22,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:12:22,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:12:22,847 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2025-02-08 01:12:22,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 191 transitions, 2834 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:22,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:22,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2025-02-08 01:12:22,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:23,682 INFO L124 PetriNetUnfolderBase]: 5894/10671 cut-off events. [2025-02-08 01:12:23,683 INFO L125 PetriNetUnfolderBase]: For 98257/99011 co-relation queries the response was YES. [2025-02-08 01:12:23,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51430 conditions, 10671 events. 5894/10671 cut-off events. For 98257/99011 co-relation queries the response was YES. Maximal size of possible extension queue 971. Compared 91337 event pairs, 1755 based on Foata normal form. 458/10969 useless extension candidates. Maximal degree in co-relation 36037. Up to 3737 conditions per place. [2025-02-08 01:12:23,754 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 216 selfloop transitions, 69 changer transitions 13/310 dead transitions. [2025-02-08 01:12:23,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 310 transitions, 4685 flow [2025-02-08 01:12:23,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:12:23,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:12:23,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2025-02-08 01:12:23,757 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7116279069767442 [2025-02-08 01:12:23,757 INFO L175 Difference]: Start difference. First operand has 99 places, 191 transitions, 2834 flow. Second operand 5 states and 153 transitions. [2025-02-08 01:12:23,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 310 transitions, 4685 flow [2025-02-08 01:12:23,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 310 transitions, 4681 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 01:12:23,892 INFO L231 Difference]: Finished difference. Result has 105 places, 205 transitions, 3289 flow [2025-02-08 01:12:23,892 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2680, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3289, PETRI_PLACES=105, PETRI_TRANSITIONS=205} [2025-02-08 01:12:23,893 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 62 predicate places. [2025-02-08 01:12:23,893 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 205 transitions, 3289 flow [2025-02-08 01:12:23,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:23,893 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:23,893 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:12:23,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 01:12:23,893 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:12:23,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:23,893 INFO L85 PathProgramCache]: Analyzing trace with hash 855906189, now seen corresponding path program 6 times [2025-02-08 01:12:23,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:23,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998195779] [2025-02-08 01:12:23,894 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:12:23,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:23,908 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 23 statements into 1 equivalence classes. [2025-02-08 01:12:23,913 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 01:12:23,914 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-08 01:12:23,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:24,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:24,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:24,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998195779] [2025-02-08 01:12:24,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998195779] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:24,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:24,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:12:24,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065239504] [2025-02-08 01:12:24,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:24,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:12:24,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:24,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:12:24,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:12:24,155 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2025-02-08 01:12:24,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 205 transitions, 3289 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:24,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:24,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2025-02-08 01:12:24,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:25,114 INFO L124 PetriNetUnfolderBase]: 6002/10854 cut-off events. [2025-02-08 01:12:25,114 INFO L125 PetriNetUnfolderBase]: For 93622/93723 co-relation queries the response was YES. [2025-02-08 01:12:25,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53071 conditions, 10854 events. 6002/10854 cut-off events. For 93622/93723 co-relation queries the response was YES. Maximal size of possible extension queue 952. Compared 92490 event pairs, 2014 based on Foata normal form. 155/10970 useless extension candidates. Maximal degree in co-relation 37859. Up to 3125 conditions per place. [2025-02-08 01:12:25,185 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 242 selfloop transitions, 79 changer transitions 6/335 dead transitions. [2025-02-08 01:12:25,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 335 transitions, 5107 flow [2025-02-08 01:12:25,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:12:25,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:12:25,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2025-02-08 01:12:25,187 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6112956810631229 [2025-02-08 01:12:25,187 INFO L175 Difference]: Start difference. First operand has 105 places, 205 transitions, 3289 flow. Second operand 7 states and 184 transitions. [2025-02-08 01:12:25,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 335 transitions, 5107 flow [2025-02-08 01:12:25,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 335 transitions, 5070 flow, removed 5 selfloop flow, removed 1 redundant places. [2025-02-08 01:12:25,333 INFO L231 Difference]: Finished difference. Result has 115 places, 223 transitions, 3913 flow [2025-02-08 01:12:25,334 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3212, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3913, PETRI_PLACES=115, PETRI_TRANSITIONS=223} [2025-02-08 01:12:25,334 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 72 predicate places. [2025-02-08 01:12:25,334 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 223 transitions, 3913 flow [2025-02-08 01:12:25,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:25,335 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:25,335 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:12:25,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-08 01:12:25,335 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:12:25,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:25,336 INFO L85 PathProgramCache]: Analyzing trace with hash -218751375, now seen corresponding path program 7 times [2025-02-08 01:12:25,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:25,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734236527] [2025-02-08 01:12:25,336 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:12:25,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:25,342 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-08 01:12:25,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 01:12:25,349 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:12:25,349 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:25,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:25,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:25,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734236527] [2025-02-08 01:12:25,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734236527] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:25,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:25,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:12:25,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738755814] [2025-02-08 01:12:25,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:25,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:12:25,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:25,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:12:25,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:12:25,436 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2025-02-08 01:12:25,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 223 transitions, 3913 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:25,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:25,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2025-02-08 01:12:25,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:26,367 INFO L124 PetriNetUnfolderBase]: 5980/10803 cut-off events. [2025-02-08 01:12:26,368 INFO L125 PetriNetUnfolderBase]: For 106314/106412 co-relation queries the response was YES. [2025-02-08 01:12:26,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54832 conditions, 10803 events. 5980/10803 cut-off events. For 106314/106412 co-relation queries the response was YES. Maximal size of possible extension queue 947. Compared 91361 event pairs, 1861 based on Foata normal form. 96/10855 useless extension candidates. Maximal degree in co-relation 46746. Up to 3697 conditions per place. [2025-02-08 01:12:26,447 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 287 selfloop transitions, 73 changer transitions 10/378 dead transitions. [2025-02-08 01:12:26,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 378 transitions, 6440 flow [2025-02-08 01:12:26,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:12:26,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:12:26,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 172 transitions. [2025-02-08 01:12:26,449 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-02-08 01:12:26,449 INFO L175 Difference]: Start difference. First operand has 115 places, 223 transitions, 3913 flow. Second operand 6 states and 172 transitions. [2025-02-08 01:12:26,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 378 transitions, 6440 flow [2025-02-08 01:12:26,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 378 transitions, 6423 flow, removed 8 selfloop flow, removed 1 redundant places. [2025-02-08 01:12:26,638 INFO L231 Difference]: Finished difference. Result has 124 places, 258 transitions, 4855 flow [2025-02-08 01:12:26,638 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3896, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4855, PETRI_PLACES=124, PETRI_TRANSITIONS=258} [2025-02-08 01:12:26,639 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 81 predicate places. [2025-02-08 01:12:26,639 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 258 transitions, 4855 flow [2025-02-08 01:12:26,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:26,639 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:26,639 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:12:26,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-08 01:12:26,639 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:12:26,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:26,640 INFO L85 PathProgramCache]: Analyzing trace with hash 587109051, now seen corresponding path program 8 times [2025-02-08 01:12:26,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:26,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449103543] [2025-02-08 01:12:26,640 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:12:26,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:26,644 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 1 equivalence classes. [2025-02-08 01:12:26,649 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 01:12:26,649 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:12:26,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:26,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:26,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:26,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449103543] [2025-02-08 01:12:26,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449103543] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:26,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:26,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:12:26,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979173226] [2025-02-08 01:12:26,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:26,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:12:26,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:26,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:12:26,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:12:26,736 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2025-02-08 01:12:26,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 258 transitions, 4855 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:26,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:26,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2025-02-08 01:12:26,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:28,043 INFO L124 PetriNetUnfolderBase]: 6147/11160 cut-off events. [2025-02-08 01:12:28,044 INFO L125 PetriNetUnfolderBase]: For 122859/122935 co-relation queries the response was YES. [2025-02-08 01:12:28,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58643 conditions, 11160 events. 6147/11160 cut-off events. For 122859/122935 co-relation queries the response was YES. Maximal size of possible extension queue 986. Compared 95642 event pairs, 1507 based on Foata normal form. 98/11244 useless extension candidates. Maximal degree in co-relation 49998. Up to 5572 conditions per place. [2025-02-08 01:12:28,139 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 270 selfloop transitions, 69 changer transitions 7/354 dead transitions. [2025-02-08 01:12:28,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 354 transitions, 6623 flow [2025-02-08 01:12:28,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:12:28,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:12:28,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 141 transitions. [2025-02-08 01:12:28,141 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6558139534883721 [2025-02-08 01:12:28,141 INFO L175 Difference]: Start difference. First operand has 124 places, 258 transitions, 4855 flow. Second operand 5 states and 141 transitions. [2025-02-08 01:12:28,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 354 transitions, 6623 flow [2025-02-08 01:12:28,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 354 transitions, 6619 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-02-08 01:12:28,457 INFO L231 Difference]: Finished difference. Result has 131 places, 275 transitions, 5517 flow [2025-02-08 01:12:28,457 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4828, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5517, PETRI_PLACES=131, PETRI_TRANSITIONS=275} [2025-02-08 01:12:28,459 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 88 predicate places. [2025-02-08 01:12:28,459 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 275 transitions, 5517 flow [2025-02-08 01:12:28,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:28,459 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:28,459 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:12:28,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-08 01:12:28,459 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:12:28,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:28,460 INFO L85 PathProgramCache]: Analyzing trace with hash -782484771, now seen corresponding path program 4 times [2025-02-08 01:12:28,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:28,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908955417] [2025-02-08 01:12:28,460 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:12:28,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:28,466 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 23 statements into 2 equivalence classes. [2025-02-08 01:12:28,482 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 01:12:28,485 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:12:28,485 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:28,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:28,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:28,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908955417] [2025-02-08 01:12:28,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908955417] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:28,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:28,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:12:28,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151957099] [2025-02-08 01:12:28,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:28,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:12:28,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:28,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:12:28,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:12:28,606 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2025-02-08 01:12:28,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 275 transitions, 5517 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:28,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:28,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2025-02-08 01:12:28,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:29,738 INFO L124 PetriNetUnfolderBase]: 5499/10244 cut-off events. [2025-02-08 01:12:29,738 INFO L125 PetriNetUnfolderBase]: For 144730/145663 co-relation queries the response was YES. [2025-02-08 01:12:29,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55366 conditions, 10244 events. 5499/10244 cut-off events. For 144730/145663 co-relation queries the response was YES. Maximal size of possible extension queue 931. Compared 89911 event pairs, 1673 based on Foata normal form. 533/10618 useless extension candidates. Maximal degree in co-relation 46770. Up to 2645 conditions per place. [2025-02-08 01:12:29,807 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 233 selfloop transitions, 116 changer transitions 17/403 dead transitions. [2025-02-08 01:12:29,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 403 transitions, 7761 flow [2025-02-08 01:12:29,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:12:29,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:12:29,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2025-02-08 01:12:29,809 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6578073089700996 [2025-02-08 01:12:29,809 INFO L175 Difference]: Start difference. First operand has 131 places, 275 transitions, 5517 flow. Second operand 7 states and 198 transitions. [2025-02-08 01:12:29,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 403 transitions, 7761 flow [2025-02-08 01:12:30,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 403 transitions, 7744 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-02-08 01:12:30,059 INFO L231 Difference]: Finished difference. Result has 142 places, 306 transitions, 6658 flow [2025-02-08 01:12:30,060 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5502, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6658, PETRI_PLACES=142, PETRI_TRANSITIONS=306} [2025-02-08 01:12:30,060 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 99 predicate places. [2025-02-08 01:12:30,060 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 306 transitions, 6658 flow [2025-02-08 01:12:30,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:30,060 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:30,060 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:12:30,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-08 01:12:30,060 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:12:30,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:30,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1721453177, now seen corresponding path program 9 times [2025-02-08 01:12:30,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:30,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930568458] [2025-02-08 01:12:30,061 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:12:30,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:30,067 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 1 equivalence classes. [2025-02-08 01:12:30,075 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 01:12:30,076 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 01:12:30,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:30,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:30,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:30,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930568458] [2025-02-08 01:12:30,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930568458] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:30,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:30,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:12:30,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854930133] [2025-02-08 01:12:30,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:30,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:12:30,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:30,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:12:30,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:12:30,149 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2025-02-08 01:12:30,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 306 transitions, 6658 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:30,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:30,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2025-02-08 01:12:30,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:31,168 INFO L124 PetriNetUnfolderBase]: 5365/9760 cut-off events. [2025-02-08 01:12:31,168 INFO L125 PetriNetUnfolderBase]: For 162661/163306 co-relation queries the response was YES. [2025-02-08 01:12:31,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56838 conditions, 9760 events. 5365/9760 cut-off events. For 162661/163306 co-relation queries the response was YES. Maximal size of possible extension queue 888. Compared 82562 event pairs, 1683 based on Foata normal form. 356/9957 useless extension candidates. Maximal degree in co-relation 50241. Up to 3682 conditions per place. [2025-02-08 01:12:31,396 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 257 selfloop transitions, 90 changer transitions 13/376 dead transitions. [2025-02-08 01:12:31,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 376 transitions, 8062 flow [2025-02-08 01:12:31,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:12:31,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:12:31,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2025-02-08 01:12:31,401 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6744186046511628 [2025-02-08 01:12:31,401 INFO L175 Difference]: Start difference. First operand has 142 places, 306 transitions, 6658 flow. Second operand 5 states and 145 transitions. [2025-02-08 01:12:31,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 376 transitions, 8062 flow [2025-02-08 01:12:31,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 376 transitions, 8010 flow, removed 26 selfloop flow, removed 0 redundant places. [2025-02-08 01:12:31,711 INFO L231 Difference]: Finished difference. Result has 148 places, 300 transitions, 6792 flow [2025-02-08 01:12:31,711 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6496, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6792, PETRI_PLACES=148, PETRI_TRANSITIONS=300} [2025-02-08 01:12:31,712 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 105 predicate places. [2025-02-08 01:12:31,712 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 300 transitions, 6792 flow [2025-02-08 01:12:31,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:31,712 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:31,712 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:12:31,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-08 01:12:31,712 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:12:31,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:31,713 INFO L85 PathProgramCache]: Analyzing trace with hash 776042293, now seen corresponding path program 5 times [2025-02-08 01:12:31,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:31,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298201595] [2025-02-08 01:12:31,713 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:12:31,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:31,717 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 23 statements into 1 equivalence classes. [2025-02-08 01:12:31,721 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 01:12:31,721 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:12:31,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:31,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:31,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:31,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298201595] [2025-02-08 01:12:31,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298201595] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:31,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:31,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:12:31,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334708061] [2025-02-08 01:12:31,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:31,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:12:31,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:31,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:12:31,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:12:31,795 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2025-02-08 01:12:31,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 300 transitions, 6792 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:31,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:31,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2025-02-08 01:12:31,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:32,926 INFO L124 PetriNetUnfolderBase]: 5506/9942 cut-off events. [2025-02-08 01:12:32,927 INFO L125 PetriNetUnfolderBase]: For 160238/160327 co-relation queries the response was YES. [2025-02-08 01:12:32,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57468 conditions, 9942 events. 5506/9942 cut-off events. For 160238/160327 co-relation queries the response was YES. Maximal size of possible extension queue 880. Compared 83045 event pairs, 1921 based on Foata normal form. 74/9996 useless extension candidates. Maximal degree in co-relation 51061. Up to 3407 conditions per place. [2025-02-08 01:12:33,009 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 281 selfloop transitions, 127 changer transitions 5/421 dead transitions. [2025-02-08 01:12:33,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 421 transitions, 8776 flow [2025-02-08 01:12:33,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:12:33,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:12:33,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 199 transitions. [2025-02-08 01:12:33,010 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6611295681063123 [2025-02-08 01:12:33,010 INFO L175 Difference]: Start difference. First operand has 148 places, 300 transitions, 6792 flow. Second operand 7 states and 199 transitions. [2025-02-08 01:12:33,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 421 transitions, 8776 flow [2025-02-08 01:12:33,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 421 transitions, 8734 flow, removed 21 selfloop flow, removed 0 redundant places. [2025-02-08 01:12:33,484 INFO L231 Difference]: Finished difference. Result has 159 places, 315 transitions, 7594 flow [2025-02-08 01:12:33,484 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6750, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7594, PETRI_PLACES=159, PETRI_TRANSITIONS=315} [2025-02-08 01:12:33,484 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 116 predicate places. [2025-02-08 01:12:33,484 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 315 transitions, 7594 flow [2025-02-08 01:12:33,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:33,485 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:33,485 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:12:33,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-08 01:12:33,485 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:12:33,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:33,485 INFO L85 PathProgramCache]: Analyzing trace with hash -2137546905, now seen corresponding path program 10 times [2025-02-08 01:12:33,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:33,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776118622] [2025-02-08 01:12:33,485 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:12:33,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:33,489 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 23 statements into 2 equivalence classes. [2025-02-08 01:12:33,495 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 01:12:33,495 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:12:33,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:33,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:33,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:33,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776118622] [2025-02-08 01:12:33,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776118622] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:33,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:33,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 01:12:33,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509786100] [2025-02-08 01:12:33,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:33,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:12:33,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:33,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:12:33,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-02-08 01:12:33,672 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2025-02-08 01:12:33,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 315 transitions, 7594 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:33,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:33,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2025-02-08 01:12:33,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:35,049 INFO L124 PetriNetUnfolderBase]: 6933/11911 cut-off events. [2025-02-08 01:12:35,050 INFO L125 PetriNetUnfolderBase]: For 202352/202352 co-relation queries the response was YES. [2025-02-08 01:12:35,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68415 conditions, 11911 events. 6933/11911 cut-off events. For 202352/202352 co-relation queries the response was YES. Maximal size of possible extension queue 983. Compared 95638 event pairs, 1740 based on Foata normal form. 52/11951 useless extension candidates. Maximal degree in co-relation 61013. Up to 8450 conditions per place. [2025-02-08 01:12:35,147 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 383 selfloop transitions, 55 changer transitions 9/453 dead transitions. [2025-02-08 01:12:35,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 453 transitions, 10614 flow [2025-02-08 01:12:35,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:12:35,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:12:35,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2025-02-08 01:12:35,148 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5681063122923588 [2025-02-08 01:12:35,148 INFO L175 Difference]: Start difference. First operand has 159 places, 315 transitions, 7594 flow. Second operand 7 states and 171 transitions. [2025-02-08 01:12:35,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 453 transitions, 10614 flow [2025-02-08 01:12:35,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 453 transitions, 10522 flow, removed 46 selfloop flow, removed 0 redundant places. [2025-02-08 01:12:35,765 INFO L231 Difference]: Finished difference. Result has 169 places, 329 transitions, 7933 flow [2025-02-08 01:12:35,765 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7526, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7933, PETRI_PLACES=169, PETRI_TRANSITIONS=329} [2025-02-08 01:12:35,765 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 126 predicate places. [2025-02-08 01:12:35,766 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 329 transitions, 7933 flow [2025-02-08 01:12:35,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:35,766 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:35,766 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:12:35,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-08 01:12:35,766 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:12:35,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:35,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1535287779, now seen corresponding path program 11 times [2025-02-08 01:12:35,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:35,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836218059] [2025-02-08 01:12:35,767 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:12:35,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:35,770 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 23 statements into 1 equivalence classes. [2025-02-08 01:12:35,772 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 01:12:35,772 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:12:35,772 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:35,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:35,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:35,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836218059] [2025-02-08 01:12:35,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836218059] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:35,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:35,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:12:35,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201768549] [2025-02-08 01:12:35,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:35,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:12:35,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:35,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:12:35,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:12:35,876 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2025-02-08 01:12:35,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 329 transitions, 7933 flow. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:35,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:35,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2025-02-08 01:12:35,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:37,036 INFO L124 PetriNetUnfolderBase]: 4933/9203 cut-off events. [2025-02-08 01:12:37,037 INFO L125 PetriNetUnfolderBase]: For 187584/188856 co-relation queries the response was YES. [2025-02-08 01:12:37,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56988 conditions, 9203 events. 4933/9203 cut-off events. For 187584/188856 co-relation queries the response was YES. Maximal size of possible extension queue 868. Compared 79815 event pairs, 1811 based on Foata normal form. 289/9194 useless extension candidates. Maximal degree in co-relation 54468. Up to 2607 conditions per place. [2025-02-08 01:12:37,118 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 226 selfloop transitions, 106 changer transitions 5/405 dead transitions. [2025-02-08 01:12:37,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 405 transitions, 9242 flow [2025-02-08 01:12:37,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:12:37,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:12:37,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2025-02-08 01:12:37,119 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6578073089700996 [2025-02-08 01:12:37,119 INFO L175 Difference]: Start difference. First operand has 169 places, 329 transitions, 7933 flow. Second operand 7 states and 198 transitions. [2025-02-08 01:12:37,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 405 transitions, 9242 flow [2025-02-08 01:12:37,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 405 transitions, 9222 flow, removed 4 selfloop flow, removed 1 redundant places. [2025-02-08 01:12:37,644 INFO L231 Difference]: Finished difference. Result has 175 places, 330 transitions, 8184 flow [2025-02-08 01:12:37,644 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7886, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8184, PETRI_PLACES=175, PETRI_TRANSITIONS=330} [2025-02-08 01:12:37,644 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 132 predicate places. [2025-02-08 01:12:37,644 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 330 transitions, 8184 flow [2025-02-08 01:12:37,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:37,645 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:37,645 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:12:37,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-08 01:12:37,645 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:12:37,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:37,645 INFO L85 PathProgramCache]: Analyzing trace with hash -335317215, now seen corresponding path program 6 times [2025-02-08 01:12:37,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:37,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702906171] [2025-02-08 01:12:37,645 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:12:37,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:37,649 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 23 statements into 1 equivalence classes. [2025-02-08 01:12:37,652 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 01:12:37,652 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-08 01:12:37,652 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:37,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:37,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:37,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702906171] [2025-02-08 01:12:37,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702906171] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:37,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:37,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:12:37,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714330055] [2025-02-08 01:12:37,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:37,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:12:37,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:37,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:12:37,713 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:12:37,724 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2025-02-08 01:12:37,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 330 transitions, 8184 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:37,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:37,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2025-02-08 01:12:37,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:38,917 INFO L124 PetriNetUnfolderBase]: 5101/9567 cut-off events. [2025-02-08 01:12:38,918 INFO L125 PetriNetUnfolderBase]: For 216344/217161 co-relation queries the response was YES. [2025-02-08 01:12:38,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59416 conditions, 9567 events. 5101/9567 cut-off events. For 216344/217161 co-relation queries the response was YES. Maximal size of possible extension queue 882. Compared 83912 event pairs, 1357 based on Foata normal form. 505/9922 useless extension candidates. Maximal degree in co-relation 56516. Up to 3303 conditions per place. [2025-02-08 01:12:38,995 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 285 selfloop transitions, 51 changer transitions 25/407 dead transitions. [2025-02-08 01:12:38,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 407 transitions, 10113 flow [2025-02-08 01:12:38,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:12:38,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:12:38,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2025-02-08 01:12:38,997 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.627906976744186 [2025-02-08 01:12:38,997 INFO L175 Difference]: Start difference. First operand has 175 places, 330 transitions, 8184 flow. Second operand 5 states and 135 transitions. [2025-02-08 01:12:38,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 407 transitions, 10113 flow [2025-02-08 01:12:39,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 407 transitions, 10082 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-02-08 01:12:39,482 INFO L231 Difference]: Finished difference. Result has 181 places, 319 transitions, 7968 flow [2025-02-08 01:12:39,482 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8013, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7968, PETRI_PLACES=181, PETRI_TRANSITIONS=319} [2025-02-08 01:12:39,482 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 138 predicate places. [2025-02-08 01:12:39,486 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 319 transitions, 7968 flow [2025-02-08 01:12:39,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:39,487 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:39,487 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:12:39,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-02-08 01:12:39,487 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:12:39,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:39,487 INFO L85 PathProgramCache]: Analyzing trace with hash -271629157, now seen corresponding path program 12 times [2025-02-08 01:12:39,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:39,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305931090] [2025-02-08 01:12:39,487 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:12:39,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:39,491 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 23 statements into 1 equivalence classes. [2025-02-08 01:12:39,499 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 01:12:39,499 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-08 01:12:39,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:39,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:39,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:39,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305931090] [2025-02-08 01:12:39,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305931090] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:39,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:39,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:12:39,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985446226] [2025-02-08 01:12:39,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:39,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:12:39,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:39,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:12:39,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:12:39,643 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2025-02-08 01:12:39,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 319 transitions, 7968 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:39,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:39,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2025-02-08 01:12:39,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:41,128 INFO L124 PetriNetUnfolderBase]: 5650/10247 cut-off events. [2025-02-08 01:12:41,129 INFO L125 PetriNetUnfolderBase]: For 204334/204403 co-relation queries the response was YES. [2025-02-08 01:12:41,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64111 conditions, 10247 events. 5650/10247 cut-off events. For 204334/204403 co-relation queries the response was YES. Maximal size of possible extension queue 932. Compared 86830 event pairs, 1569 based on Foata normal form. 91/10290 useless extension candidates. Maximal degree in co-relation 62795. Up to 5085 conditions per place. [2025-02-08 01:12:41,230 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 299 selfloop transitions, 76 changer transitions 12/396 dead transitions. [2025-02-08 01:12:41,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 396 transitions, 9477 flow [2025-02-08 01:12:41,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:12:41,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:12:41,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2025-02-08 01:12:41,232 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5813953488372093 [2025-02-08 01:12:41,232 INFO L175 Difference]: Start difference. First operand has 181 places, 319 transitions, 7968 flow. Second operand 6 states and 150 transitions. [2025-02-08 01:12:41,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 396 transitions, 9477 flow [2025-02-08 01:12:41,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 396 transitions, 9399 flow, removed 13 selfloop flow, removed 4 redundant places. [2025-02-08 01:12:41,872 INFO L231 Difference]: Finished difference. Result has 184 places, 323 transitions, 8166 flow [2025-02-08 01:12:41,872 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7639, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8166, PETRI_PLACES=184, PETRI_TRANSITIONS=323} [2025-02-08 01:12:41,872 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 141 predicate places. [2025-02-08 01:12:41,872 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 323 transitions, 8166 flow [2025-02-08 01:12:41,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:41,873 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:41,873 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:12:41,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-02-08 01:12:41,873 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:12:41,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:41,873 INFO L85 PathProgramCache]: Analyzing trace with hash 241838497, now seen corresponding path program 7 times [2025-02-08 01:12:41,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:41,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547077056] [2025-02-08 01:12:41,874 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:12:41,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:41,878 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-08 01:12:41,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 01:12:41,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:12:41,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:41,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:41,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:41,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547077056] [2025-02-08 01:12:41,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547077056] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:41,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:41,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:12:41,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768500526] [2025-02-08 01:12:41,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:41,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:12:41,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:41,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:12:41,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:12:41,968 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2025-02-08 01:12:41,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 323 transitions, 8166 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:41,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:41,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2025-02-08 01:12:41,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:43,224 INFO L124 PetriNetUnfolderBase]: 5180/9476 cut-off events. [2025-02-08 01:12:43,224 INFO L125 PetriNetUnfolderBase]: For 204471/204566 co-relation queries the response was YES. [2025-02-08 01:12:43,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60336 conditions, 9476 events. 5180/9476 cut-off events. For 204471/204566 co-relation queries the response was YES. Maximal size of possible extension queue 877. Compared 80274 event pairs, 1823 based on Foata normal form. 148/9607 useless extension candidates. Maximal degree in co-relation 54732. Up to 3438 conditions per place. [2025-02-08 01:12:43,303 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 307 selfloop transitions, 82 changer transitions 8/406 dead transitions. [2025-02-08 01:12:43,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 406 transitions, 9404 flow [2025-02-08 01:12:43,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:12:43,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:12:43,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 176 transitions. [2025-02-08 01:12:43,304 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6821705426356589 [2025-02-08 01:12:43,304 INFO L175 Difference]: Start difference. First operand has 184 places, 323 transitions, 8166 flow. Second operand 6 states and 176 transitions. [2025-02-08 01:12:43,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 406 transitions, 9404 flow [2025-02-08 01:12:43,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 406 transitions, 9285 flow, removed 30 selfloop flow, removed 3 redundant places. [2025-02-08 01:12:43,910 INFO L231 Difference]: Finished difference. Result has 188 places, 314 transitions, 7958 flow [2025-02-08 01:12:43,910 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7711, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7958, PETRI_PLACES=188, PETRI_TRANSITIONS=314} [2025-02-08 01:12:43,910 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 145 predicate places. [2025-02-08 01:12:43,910 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 314 transitions, 7958 flow [2025-02-08 01:12:43,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:43,911 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:43,911 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:12:43,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-02-08 01:12:43,912 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:12:43,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:43,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1197077277, now seen corresponding path program 13 times [2025-02-08 01:12:43,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:43,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354570138] [2025-02-08 01:12:43,913 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:12:43,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:43,916 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-08 01:12:43,919 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 01:12:43,919 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:12:43,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:43,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:43,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:43,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354570138] [2025-02-08 01:12:43,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354570138] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:43,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:43,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:12:43,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681207954] [2025-02-08 01:12:43,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:43,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:12:43,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:43,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:12:43,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:12:43,990 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2025-02-08 01:12:43,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 314 transitions, 7958 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:43,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:43,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2025-02-08 01:12:43,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:45,143 INFO L124 PetriNetUnfolderBase]: 4847/8877 cut-off events. [2025-02-08 01:12:45,143 INFO L125 PetriNetUnfolderBase]: For 206134/206801 co-relation queries the response was YES. [2025-02-08 01:12:45,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58164 conditions, 8877 events. 4847/8877 cut-off events. For 206134/206801 co-relation queries the response was YES. Maximal size of possible extension queue 843. Compared 74529 event pairs, 1217 based on Foata normal form. 350/9116 useless extension candidates. Maximal degree in co-relation 52485. Up to 2943 conditions per place. [2025-02-08 01:12:45,230 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 282 selfloop transitions, 95 changer transitions 4/399 dead transitions. [2025-02-08 01:12:45,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 399 transitions, 9614 flow [2025-02-08 01:12:45,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:12:45,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:12:45,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 171 transitions. [2025-02-08 01:12:45,231 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6627906976744186 [2025-02-08 01:12:45,231 INFO L175 Difference]: Start difference. First operand has 188 places, 314 transitions, 7958 flow. Second operand 6 states and 171 transitions. [2025-02-08 01:12:45,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 399 transitions, 9614 flow [2025-02-08 01:12:45,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 399 transitions, 9491 flow, removed 4 selfloop flow, removed 3 redundant places. [2025-02-08 01:12:45,916 INFO L231 Difference]: Finished difference. Result has 192 places, 328 transitions, 8505 flow [2025-02-08 01:12:45,917 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7809, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8505, PETRI_PLACES=192, PETRI_TRANSITIONS=328} [2025-02-08 01:12:45,917 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 149 predicate places. [2025-02-08 01:12:45,917 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 328 transitions, 8505 flow [2025-02-08 01:12:45,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:45,917 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:45,917 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:12:45,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-02-08 01:12:45,918 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:12:45,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:45,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1769175071, now seen corresponding path program 8 times [2025-02-08 01:12:45,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:45,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538412748] [2025-02-08 01:12:45,918 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:12:45,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:45,926 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 1 equivalence classes. [2025-02-08 01:12:45,933 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 01:12:45,933 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:12:45,933 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:46,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:46,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:46,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538412748] [2025-02-08 01:12:46,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538412748] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:46,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:46,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:12:46,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56251448] [2025-02-08 01:12:46,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:46,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:12:46,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:46,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:12:46,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:12:46,012 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2025-02-08 01:12:46,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 328 transitions, 8505 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:46,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:46,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2025-02-08 01:12:46,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:47,257 INFO L124 PetriNetUnfolderBase]: 4857/8943 cut-off events. [2025-02-08 01:12:47,257 INFO L125 PetriNetUnfolderBase]: For 216504/217067 co-relation queries the response was YES. [2025-02-08 01:12:47,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58826 conditions, 8943 events. 4857/8943 cut-off events. For 216504/217067 co-relation queries the response was YES. Maximal size of possible extension queue 852. Compared 76170 event pairs, 1458 based on Foata normal form. 333/9116 useless extension candidates. Maximal degree in co-relation 53318. Up to 3081 conditions per place. [2025-02-08 01:12:47,330 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 313 selfloop transitions, 41 changer transitions 23/405 dead transitions. [2025-02-08 01:12:47,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 405 transitions, 10434 flow [2025-02-08 01:12:47,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:12:47,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:12:47,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2025-02-08 01:12:47,332 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6186046511627907 [2025-02-08 01:12:47,332 INFO L175 Difference]: Start difference. First operand has 192 places, 328 transitions, 8505 flow. Second operand 5 states and 133 transitions. [2025-02-08 01:12:47,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 405 transitions, 10434 flow [2025-02-08 01:12:47,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 405 transitions, 10408 flow, removed 13 selfloop flow, removed 0 redundant places. [2025-02-08 01:12:47,838 INFO L231 Difference]: Finished difference. Result has 198 places, 326 transitions, 8506 flow [2025-02-08 01:12:47,838 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8350, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=8506, PETRI_PLACES=198, PETRI_TRANSITIONS=326} [2025-02-08 01:12:47,839 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 155 predicate places. [2025-02-08 01:12:47,839 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 326 transitions, 8506 flow [2025-02-08 01:12:47,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:47,839 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:47,839 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:12:47,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-02-08 01:12:47,839 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:12:47,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:47,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1429424319, now seen corresponding path program 14 times [2025-02-08 01:12:47,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:47,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288780534] [2025-02-08 01:12:47,840 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:12:47,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:47,845 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 1 equivalence classes. [2025-02-08 01:12:47,849 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 01:12:47,849 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:12:47,849 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:47,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:47,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:47,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288780534] [2025-02-08 01:12:47,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288780534] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:47,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:47,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:12:47,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480758905] [2025-02-08 01:12:47,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:47,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:12:47,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:47,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:12:47,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:12:47,919 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2025-02-08 01:12:47,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 326 transitions, 8506 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:47,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:47,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2025-02-08 01:12:47,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:49,121 INFO L124 PetriNetUnfolderBase]: 5045/9154 cut-off events. [2025-02-08 01:12:49,121 INFO L125 PetriNetUnfolderBase]: For 207634/207729 co-relation queries the response was YES. [2025-02-08 01:12:49,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60581 conditions, 9154 events. 5045/9154 cut-off events. For 207634/207729 co-relation queries the response was YES. Maximal size of possible extension queue 857. Compared 76273 event pairs, 1826 based on Foata normal form. 74/9209 useless extension candidates. Maximal degree in co-relation 55437. Up to 2676 conditions per place. [2025-02-08 01:12:49,205 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 284 selfloop transitions, 113 changer transitions 4/410 dead transitions. [2025-02-08 01:12:49,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 410 transitions, 9941 flow [2025-02-08 01:12:49,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:12:49,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:12:49,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2025-02-08 01:12:49,206 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6378737541528239 [2025-02-08 01:12:49,206 INFO L175 Difference]: Start difference. First operand has 198 places, 326 transitions, 8506 flow. Second operand 7 states and 192 transitions. [2025-02-08 01:12:49,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 410 transitions, 9941 flow [2025-02-08 01:12:49,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 410 transitions, 9867 flow, removed 13 selfloop flow, removed 2 redundant places. [2025-02-08 01:12:49,909 INFO L231 Difference]: Finished difference. Result has 203 places, 325 transitions, 8717 flow [2025-02-08 01:12:49,909 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8401, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8717, PETRI_PLACES=203, PETRI_TRANSITIONS=325} [2025-02-08 01:12:49,910 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 160 predicate places. [2025-02-08 01:12:49,910 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 325 transitions, 8717 flow [2025-02-08 01:12:49,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:49,910 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:49,910 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:12:49,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-02-08 01:12:49,910 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:12:49,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:49,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1919451557, now seen corresponding path program 9 times [2025-02-08 01:12:49,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:49,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550500266] [2025-02-08 01:12:49,911 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:12:49,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:49,917 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 1 equivalence classes. [2025-02-08 01:12:49,920 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 01:12:49,920 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 01:12:49,920 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:49,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:49,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:49,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550500266] [2025-02-08 01:12:49,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550500266] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:49,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:49,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:12:49,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608729781] [2025-02-08 01:12:49,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:49,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:12:49,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:49,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:12:49,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:12:49,999 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2025-02-08 01:12:49,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 325 transitions, 8717 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:49,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:49,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2025-02-08 01:12:49,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:51,069 INFO L124 PetriNetUnfolderBase]: 4592/8641 cut-off events. [2025-02-08 01:12:51,069 INFO L125 PetriNetUnfolderBase]: For 213594/214318 co-relation queries the response was YES. [2025-02-08 01:12:51,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56818 conditions, 8641 events. 4592/8641 cut-off events. For 213594/214318 co-relation queries the response was YES. Maximal size of possible extension queue 825. Compared 75119 event pairs, 1358 based on Foata normal form. 354/8863 useless extension candidates. Maximal degree in co-relation 53307. Up to 2990 conditions per place. [2025-02-08 01:12:51,146 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 277 selfloop transitions, 58 changer transitions 8/392 dead transitions. [2025-02-08 01:12:51,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 392 transitions, 10324 flow [2025-02-08 01:12:51,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:12:51,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:12:51,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2025-02-08 01:12:51,147 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6093023255813953 [2025-02-08 01:12:51,147 INFO L175 Difference]: Start difference. First operand has 203 places, 325 transitions, 8717 flow. Second operand 5 states and 131 transitions. [2025-02-08 01:12:51,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 392 transitions, 10324 flow [2025-02-08 01:12:51,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 392 transitions, 10164 flow, removed 22 selfloop flow, removed 4 redundant places. [2025-02-08 01:12:51,729 INFO L231 Difference]: Finished difference. Result has 204 places, 327 transitions, 8775 flow [2025-02-08 01:12:51,729 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8491, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=8775, PETRI_PLACES=204, PETRI_TRANSITIONS=327} [2025-02-08 01:12:51,730 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 161 predicate places. [2025-02-08 01:12:51,730 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 327 transitions, 8775 flow [2025-02-08 01:12:51,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:51,730 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:51,730 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:12:51,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-02-08 01:12:51,731 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:12:51,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:51,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1099096181, now seen corresponding path program 10 times [2025-02-08 01:12:51,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:51,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380873760] [2025-02-08 01:12:51,731 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:12:51,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:51,735 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 23 statements into 2 equivalence classes. [2025-02-08 01:12:51,740 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 01:12:51,740 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:12:51,740 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:51,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:51,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:51,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380873760] [2025-02-08 01:12:51,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380873760] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:51,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:51,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:12:51,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742351574] [2025-02-08 01:12:51,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:51,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:12:51,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:51,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:12:51,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:12:51,848 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2025-02-08 01:12:51,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 327 transitions, 8775 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:51,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:51,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2025-02-08 01:12:51,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:53,105 INFO L124 PetriNetUnfolderBase]: 5081/9276 cut-off events. [2025-02-08 01:12:53,105 INFO L125 PetriNetUnfolderBase]: For 206945/206995 co-relation queries the response was YES. [2025-02-08 01:12:53,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61790 conditions, 9276 events. 5081/9276 cut-off events. For 206945/206995 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 77875 event pairs, 1538 based on Foata normal form. 61/9327 useless extension candidates. Maximal degree in co-relation 58122. Up to 3957 conditions per place. [2025-02-08 01:12:53,163 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 292 selfloop transitions, 83 changer transitions 4/388 dead transitions. [2025-02-08 01:12:53,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 388 transitions, 9958 flow [2025-02-08 01:12:53,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:12:53,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:12:53,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2025-02-08 01:12:53,164 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6511627906976745 [2025-02-08 01:12:53,165 INFO L175 Difference]: Start difference. First operand has 204 places, 327 transitions, 8775 flow. Second operand 5 states and 140 transitions. [2025-02-08 01:12:53,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 388 transitions, 9958 flow [2025-02-08 01:12:53,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 388 transitions, 9916 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 01:12:53,732 INFO L231 Difference]: Finished difference. Result has 207 places, 327 transitions, 8946 flow [2025-02-08 01:12:53,732 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8736, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=8946, PETRI_PLACES=207, PETRI_TRANSITIONS=327} [2025-02-08 01:12:53,732 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 164 predicate places. [2025-02-08 01:12:53,732 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 327 transitions, 8946 flow [2025-02-08 01:12:53,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:53,733 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:53,733 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:12:53,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-02-08 01:12:53,733 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:12:53,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:53,733 INFO L85 PathProgramCache]: Analyzing trace with hash 57857167, now seen corresponding path program 11 times [2025-02-08 01:12:53,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:53,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064425387] [2025-02-08 01:12:53,733 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:12:53,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:53,736 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 23 statements into 1 equivalence classes. [2025-02-08 01:12:53,739 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 01:12:53,740 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:12:53,740 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:53,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:53,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:53,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064425387] [2025-02-08 01:12:53,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064425387] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:53,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:53,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:12:53,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16758636] [2025-02-08 01:12:53,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:53,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:12:53,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:53,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:12:53,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:12:53,808 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2025-02-08 01:12:53,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 327 transitions, 8946 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:53,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:53,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2025-02-08 01:12:53,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:54,988 INFO L124 PetriNetUnfolderBase]: 4814/8935 cut-off events. [2025-02-08 01:12:54,988 INFO L125 PetriNetUnfolderBase]: For 219091/219561 co-relation queries the response was YES. [2025-02-08 01:12:55,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59844 conditions, 8935 events. 4814/8935 cut-off events. For 219091/219561 co-relation queries the response was YES. Maximal size of possible extension queue 844. Compared 76487 event pairs, 1117 based on Foata normal form. 298/9134 useless extension candidates. Maximal degree in co-relation 56131. Up to 3905 conditions per place. [2025-02-08 01:12:55,067 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 322 selfloop transitions, 83 changer transitions 10/443 dead transitions. [2025-02-08 01:12:55,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 443 transitions, 11046 flow [2025-02-08 01:12:55,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:12:55,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:12:55,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 197 transitions. [2025-02-08 01:12:55,068 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.654485049833887 [2025-02-08 01:12:55,068 INFO L175 Difference]: Start difference. First operand has 207 places, 327 transitions, 8946 flow. Second operand 7 states and 197 transitions. [2025-02-08 01:12:55,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 443 transitions, 11046 flow [2025-02-08 01:12:55,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 443 transitions, 11023 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 01:12:55,750 INFO L231 Difference]: Finished difference. Result has 216 places, 341 transitions, 9567 flow [2025-02-08 01:12:55,750 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8878, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9567, PETRI_PLACES=216, PETRI_TRANSITIONS=341} [2025-02-08 01:12:55,751 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 173 predicate places. [2025-02-08 01:12:55,751 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 341 transitions, 9567 flow [2025-02-08 01:12:55,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:55,751 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:55,751 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] [2025-02-08 01:12:55,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-02-08 01:12:55,751 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:12:55,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:55,752 INFO L85 PathProgramCache]: Analyzing trace with hash -483500519, now seen corresponding path program 1 times [2025-02-08 01:12:55,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:55,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584125012] [2025-02-08 01:12:55,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:12:55,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:55,755 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 01:12:55,757 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 01:12:55,757 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:12:55,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:55,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:55,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:55,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584125012] [2025-02-08 01:12:55,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584125012] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:55,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:55,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 01:12:55,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236705485] [2025-02-08 01:12:55,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:55,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:12:55,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:55,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:12:55,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:12:55,821 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2025-02-08 01:12:55,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 341 transitions, 9567 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:55,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:55,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2025-02-08 01:12:55,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:57,139 INFO L124 PetriNetUnfolderBase]: 5232/9621 cut-off events. [2025-02-08 01:12:57,139 INFO L125 PetriNetUnfolderBase]: For 229826/229954 co-relation queries the response was YES. [2025-02-08 01:12:57,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65519 conditions, 9621 events. 5232/9621 cut-off events. For 229826/229954 co-relation queries the response was YES. Maximal size of possible extension queue 882. Compared 81537 event pairs, 997 based on Foata normal form. 82/9690 useless extension candidates. Maximal degree in co-relation 60825. Up to 3855 conditions per place. [2025-02-08 01:12:57,234 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 337 selfloop transitions, 95 changer transitions 22/463 dead transitions. [2025-02-08 01:12:57,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 463 transitions, 11935 flow [2025-02-08 01:12:57,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:12:57,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:12:57,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 205 transitions. [2025-02-08 01:12:57,235 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6810631229235881 [2025-02-08 01:12:57,235 INFO L175 Difference]: Start difference. First operand has 216 places, 341 transitions, 9567 flow. Second operand 7 states and 205 transitions. [2025-02-08 01:12:57,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 463 transitions, 11935 flow [2025-02-08 01:12:58,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 463 transitions, 11758 flow, removed 16 selfloop flow, removed 3 redundant places. [2025-02-08 01:12:58,054 INFO L231 Difference]: Finished difference. Result has 225 places, 353 transitions, 10034 flow [2025-02-08 01:12:58,055 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9400, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10034, PETRI_PLACES=225, PETRI_TRANSITIONS=353} [2025-02-08 01:12:58,055 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 182 predicate places. [2025-02-08 01:12:58,055 INFO L471 AbstractCegarLoop]: Abstraction has has 225 places, 353 transitions, 10034 flow [2025-02-08 01:12:58,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:58,055 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:58,055 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] [2025-02-08 01:12:58,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-02-08 01:12:58,055 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:12:58,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:58,056 INFO L85 PathProgramCache]: Analyzing trace with hash -515960709, now seen corresponding path program 2 times [2025-02-08 01:12:58,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:58,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663567364] [2025-02-08 01:12:58,056 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:12:58,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:58,061 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 1 equivalence classes. [2025-02-08 01:12:58,063 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 01:12:58,063 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:12:58,063 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:58,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:58,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:58,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663567364] [2025-02-08 01:12:58,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663567364] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:58,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:58,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 01:12:58,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223186123] [2025-02-08 01:12:58,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:58,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:12:58,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:58,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:12:58,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:12:58,143 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2025-02-08 01:12:58,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 353 transitions, 10034 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:12:58,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:58,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2025-02-08 01:12:58,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:59,716 INFO L124 PetriNetUnfolderBase]: 5513/10089 cut-off events. [2025-02-08 01:12:59,716 INFO L125 PetriNetUnfolderBase]: For 263096/263211 co-relation queries the response was YES. [2025-02-08 01:12:59,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71898 conditions, 10089 events. 5513/10089 cut-off events. For 263096/263211 co-relation queries the response was YES. Maximal size of possible extension queue 924. Compared 85826 event pairs, 1286 based on Foata normal form. 68/10132 useless extension candidates. Maximal degree in co-relation 66821. Up to 2273 conditions per place. [2025-02-08 01:12:59,803 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 363 selfloop transitions, 108 changer transitions 38/518 dead transitions. [2025-02-08 01:12:59,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 518 transitions, 13724 flow [2025-02-08 01:12:59,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:59,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:59,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 220 transitions. [2025-02-08 01:12:59,804 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6395348837209303 [2025-02-08 01:12:59,804 INFO L175 Difference]: Start difference. First operand has 225 places, 353 transitions, 10034 flow. Second operand 8 states and 220 transitions. [2025-02-08 01:12:59,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 518 transitions, 13724 flow [2025-02-08 01:13:00,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 518 transitions, 13674 flow, removed 19 selfloop flow, removed 1 redundant places. [2025-02-08 01:13:00,708 INFO L231 Difference]: Finished difference. Result has 237 places, 383 transitions, 11399 flow [2025-02-08 01:13:00,708 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9989, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11399, PETRI_PLACES=237, PETRI_TRANSITIONS=383} [2025-02-08 01:13:00,708 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 194 predicate places. [2025-02-08 01:13:00,708 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 383 transitions, 11399 flow [2025-02-08 01:13:00,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:00,712 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:00,712 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] [2025-02-08 01:13:00,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-02-08 01:13:00,712 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:00,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:00,713 INFO L85 PathProgramCache]: Analyzing trace with hash 309822979, now seen corresponding path program 3 times [2025-02-08 01:13:00,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:00,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443163143] [2025-02-08 01:13:00,713 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:13:00,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:00,716 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 24 statements into 1 equivalence classes. [2025-02-08 01:13:00,719 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 01:13:00,719 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 01:13:00,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:00,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:13:00,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:00,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443163143] [2025-02-08 01:13:00,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443163143] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:13:00,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:13:00,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:13:00,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834596298] [2025-02-08 01:13:00,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:00,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:13:00,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:00,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:13:00,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:13:00,809 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2025-02-08 01:13:00,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 383 transitions, 11399 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:00,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:00,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2025-02-08 01:13:00,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:02,253 INFO L124 PetriNetUnfolderBase]: 4756/9116 cut-off events. [2025-02-08 01:13:02,253 INFO L125 PetriNetUnfolderBase]: For 266640/266939 co-relation queries the response was YES. [2025-02-08 01:13:02,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65490 conditions, 9116 events. 4756/9116 cut-off events. For 266640/266939 co-relation queries the response was YES. Maximal size of possible extension queue 914. Compared 81167 event pairs, 1244 based on Foata normal form. 190/9040 useless extension candidates. Maximal degree in co-relation 60230. Up to 2067 conditions per place. [2025-02-08 01:13:02,364 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 306 selfloop transitions, 104 changer transitions 9/505 dead transitions. [2025-02-08 01:13:02,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 505 transitions, 13694 flow [2025-02-08 01:13:02,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:13:02,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:13:02,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 201 transitions. [2025-02-08 01:13:02,365 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6677740863787376 [2025-02-08 01:13:02,365 INFO L175 Difference]: Start difference. First operand has 237 places, 383 transitions, 11399 flow. Second operand 7 states and 201 transitions. [2025-02-08 01:13:02,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 505 transitions, 13694 flow [2025-02-08 01:13:03,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 505 transitions, 13638 flow, removed 28 selfloop flow, removed 0 redundant places. [2025-02-08 01:13:03,572 INFO L231 Difference]: Finished difference. Result has 249 places, 387 transitions, 11846 flow [2025-02-08 01:13:03,572 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11349, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11846, PETRI_PLACES=249, PETRI_TRANSITIONS=387} [2025-02-08 01:13:03,574 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 206 predicate places. [2025-02-08 01:13:03,574 INFO L471 AbstractCegarLoop]: Abstraction has has 249 places, 387 transitions, 11846 flow [2025-02-08 01:13:03,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:03,574 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:03,574 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] [2025-02-08 01:13:03,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-02-08 01:13:03,575 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:03,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:03,575 INFO L85 PathProgramCache]: Analyzing trace with hash -2063335190, now seen corresponding path program 1 times [2025-02-08 01:13:03,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:03,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011014476] [2025-02-08 01:13:03,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:13:03,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:03,579 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 01:13:03,582 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 01:13:03,582 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:13:03,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:03,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:13:03,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:03,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011014476] [2025-02-08 01:13:03,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011014476] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:13:03,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:13:03,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 01:13:03,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62272585] [2025-02-08 01:13:03,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:03,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:13:03,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:03,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:13:03,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:13:03,676 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2025-02-08 01:13:03,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 387 transitions, 11846 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:03,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:03,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2025-02-08 01:13:03,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:05,588 INFO L124 PetriNetUnfolderBase]: 5720/10609 cut-off events. [2025-02-08 01:13:05,588 INFO L125 PetriNetUnfolderBase]: For 304361/304422 co-relation queries the response was YES. [2025-02-08 01:13:05,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77077 conditions, 10609 events. 5720/10609 cut-off events. For 304361/304422 co-relation queries the response was YES. Maximal size of possible extension queue 989. Compared 92252 event pairs, 1188 based on Foata normal form. 91/10685 useless extension candidates. Maximal degree in co-relation 74862. Up to 2476 conditions per place. [2025-02-08 01:13:05,718 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 381 selfloop transitions, 133 changer transitions 15/538 dead transitions. [2025-02-08 01:13:05,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 538 transitions, 14940 flow [2025-02-08 01:13:05,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:13:05,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:13:05,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 235 transitions. [2025-02-08 01:13:05,719 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6831395348837209 [2025-02-08 01:13:05,719 INFO L175 Difference]: Start difference. First operand has 249 places, 387 transitions, 11846 flow. Second operand 8 states and 235 transitions. [2025-02-08 01:13:05,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 538 transitions, 14940 flow [2025-02-08 01:13:07,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 538 transitions, 14793 flow, removed 35 selfloop flow, removed 4 redundant places. [2025-02-08 01:13:07,141 INFO L231 Difference]: Finished difference. Result has 258 places, 416 transitions, 13164 flow [2025-02-08 01:13:07,141 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11703, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13164, PETRI_PLACES=258, PETRI_TRANSITIONS=416} [2025-02-08 01:13:07,142 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 215 predicate places. [2025-02-08 01:13:07,142 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 416 transitions, 13164 flow [2025-02-08 01:13:07,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:07,142 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:07,142 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] [2025-02-08 01:13:07,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-02-08 01:13:07,142 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:07,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:07,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1771437240, now seen corresponding path program 2 times [2025-02-08 01:13:07,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:07,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108456490] [2025-02-08 01:13:07,142 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:13:07,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:07,149 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 1 equivalence classes. [2025-02-08 01:13:07,151 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 01:13:07,151 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:13:07,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:07,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:13:07,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:07,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108456490] [2025-02-08 01:13:07,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108456490] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:13:07,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:13:07,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:13:07,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303842882] [2025-02-08 01:13:07,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:07,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:13:07,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:07,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:13:07,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:13:07,212 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2025-02-08 01:13:07,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 416 transitions, 13164 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:07,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:07,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2025-02-08 01:13:07,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:08,883 INFO L124 PetriNetUnfolderBase]: 5434/10267 cut-off events. [2025-02-08 01:13:08,884 INFO L125 PetriNetUnfolderBase]: For 325244/325468 co-relation queries the response was YES. [2025-02-08 01:13:08,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75903 conditions, 10267 events. 5434/10267 cut-off events. For 325244/325468 co-relation queries the response was YES. Maximal size of possible extension queue 964. Compared 91046 event pairs, 1859 based on Foata normal form. 122/10322 useless extension candidates. Maximal degree in co-relation 71125. Up to 3739 conditions per place. [2025-02-08 01:13:09,016 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 372 selfloop transitions, 99 changer transitions 15/516 dead transitions. [2025-02-08 01:13:09,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 516 transitions, 15602 flow [2025-02-08 01:13:09,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:13:09,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:13:09,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2025-02-08 01:13:09,017 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6146179401993356 [2025-02-08 01:13:09,018 INFO L175 Difference]: Start difference. First operand has 258 places, 416 transitions, 13164 flow. Second operand 7 states and 185 transitions. [2025-02-08 01:13:09,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 516 transitions, 15602 flow [2025-02-08 01:13:10,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 516 transitions, 15414 flow, removed 34 selfloop flow, removed 3 redundant places. [2025-02-08 01:13:10,678 INFO L231 Difference]: Finished difference. Result has 264 places, 423 transitions, 13407 flow [2025-02-08 01:13:10,678 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12990, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13407, PETRI_PLACES=264, PETRI_TRANSITIONS=423} [2025-02-08 01:13:10,678 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 221 predicate places. [2025-02-08 01:13:10,678 INFO L471 AbstractCegarLoop]: Abstraction has has 264 places, 423 transitions, 13407 flow [2025-02-08 01:13:10,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:10,679 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:10,679 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] [2025-02-08 01:13:10,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-02-08 01:13:10,679 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:10,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:10,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1972379253, now seen corresponding path program 4 times [2025-02-08 01:13:10,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:10,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544760177] [2025-02-08 01:13:10,679 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:13:10,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:10,683 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 24 statements into 2 equivalence classes. [2025-02-08 01:13:10,685 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 01:13:10,685 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:13:10,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:10,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:13:10,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:10,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544760177] [2025-02-08 01:13:10,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544760177] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:13:10,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:13:10,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:13:10,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035278622] [2025-02-08 01:13:10,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:10,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:13:10,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:10,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:13:10,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:13:10,744 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2025-02-08 01:13:10,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 423 transitions, 13407 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:10,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:10,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2025-02-08 01:13:10,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:12,568 INFO L124 PetriNetUnfolderBase]: 5697/10628 cut-off events. [2025-02-08 01:13:12,568 INFO L125 PetriNetUnfolderBase]: For 303148/303194 co-relation queries the response was YES. [2025-02-08 01:13:12,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78807 conditions, 10628 events. 5697/10628 cut-off events. For 303148/303194 co-relation queries the response was YES. Maximal size of possible extension queue 989. Compared 93159 event pairs, 1228 based on Foata normal form. 56/10676 useless extension candidates. Maximal degree in co-relation 73632. Up to 4939 conditions per place. [2025-02-08 01:13:12,684 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 379 selfloop transitions, 95 changer transitions 7/490 dead transitions. [2025-02-08 01:13:12,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 490 transitions, 15070 flow [2025-02-08 01:13:12,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:13:12,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:13:12,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2025-02-08 01:13:12,685 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6511627906976745 [2025-02-08 01:13:12,686 INFO L175 Difference]: Start difference. First operand has 264 places, 423 transitions, 13407 flow. Second operand 5 states and 140 transitions. [2025-02-08 01:13:12,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 490 transitions, 15070 flow [2025-02-08 01:13:14,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 490 transitions, 14985 flow, removed 37 selfloop flow, removed 1 redundant places. [2025-02-08 01:13:14,059 INFO L231 Difference]: Finished difference. Result has 270 places, 428 transitions, 13825 flow [2025-02-08 01:13:14,059 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13325, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=13825, PETRI_PLACES=270, PETRI_TRANSITIONS=428} [2025-02-08 01:13:14,059 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 227 predicate places. [2025-02-08 01:13:14,060 INFO L471 AbstractCegarLoop]: Abstraction has has 270 places, 428 transitions, 13825 flow [2025-02-08 01:13:14,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:14,060 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:14,060 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] [2025-02-08 01:13:14,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2025-02-08 01:13:14,060 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:14,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:14,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1571944941, now seen corresponding path program 5 times [2025-02-08 01:13:14,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:14,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915023761] [2025-02-08 01:13:14,061 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:13:14,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:14,065 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 24 statements into 1 equivalence classes. [2025-02-08 01:13:14,071 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 01:13:14,071 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:13:14,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:14,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:13:14,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:14,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915023761] [2025-02-08 01:13:14,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915023761] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:13:14,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:13:14,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:13:14,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391186157] [2025-02-08 01:13:14,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:14,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:13:14,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:14,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:13:14,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:13:14,132 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2025-02-08 01:13:14,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 428 transitions, 13825 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:14,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:14,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2025-02-08 01:13:14,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:16,108 INFO L124 PetriNetUnfolderBase]: 5361/10147 cut-off events. [2025-02-08 01:13:16,108 INFO L125 PetriNetUnfolderBase]: For 325208/325435 co-relation queries the response was YES. [2025-02-08 01:13:16,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76798 conditions, 10147 events. 5361/10147 cut-off events. For 325208/325435 co-relation queries the response was YES. Maximal size of possible extension queue 961. Compared 89866 event pairs, 1934 based on Foata normal form. 141/10241 useless extension candidates. Maximal degree in co-relation 71865. Up to 3471 conditions per place. [2025-02-08 01:13:16,218 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 379 selfloop transitions, 94 changer transitions 15/518 dead transitions. [2025-02-08 01:13:16,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 518 transitions, 15916 flow [2025-02-08 01:13:16,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:13:16,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:13:16,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2025-02-08 01:13:16,223 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6179401993355482 [2025-02-08 01:13:16,224 INFO L175 Difference]: Start difference. First operand has 270 places, 428 transitions, 13825 flow. Second operand 7 states and 186 transitions. [2025-02-08 01:13:16,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 518 transitions, 15916 flow [2025-02-08 01:13:17,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 518 transitions, 15849 flow, removed 13 selfloop flow, removed 2 redundant places. [2025-02-08 01:13:17,804 INFO L231 Difference]: Finished difference. Result has 276 places, 425 transitions, 13751 flow [2025-02-08 01:13:17,805 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13765, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13751, PETRI_PLACES=276, PETRI_TRANSITIONS=425} [2025-02-08 01:13:17,805 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 233 predicate places. [2025-02-08 01:13:17,805 INFO L471 AbstractCegarLoop]: Abstraction has has 276 places, 425 transitions, 13751 flow [2025-02-08 01:13:17,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:17,805 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:17,806 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] [2025-02-08 01:13:17,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2025-02-08 01:13:17,806 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:17,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:17,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1757051260, now seen corresponding path program 3 times [2025-02-08 01:13:17,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:17,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523069831] [2025-02-08 01:13:17,806 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:13:17,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:17,810 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 24 statements into 1 equivalence classes. [2025-02-08 01:13:17,811 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 01:13:17,811 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 01:13:17,811 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:17,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:13:17,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:17,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523069831] [2025-02-08 01:13:17,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523069831] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:13:17,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:13:17,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:13:17,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069141784] [2025-02-08 01:13:17,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:17,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:13:17,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:17,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:13:17,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:13:17,887 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2025-02-08 01:13:17,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 425 transitions, 13751 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:17,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:17,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2025-02-08 01:13:17,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:19,729 INFO L124 PetriNetUnfolderBase]: 5702/10652 cut-off events. [2025-02-08 01:13:19,729 INFO L125 PetriNetUnfolderBase]: For 314509/314557 co-relation queries the response was YES. [2025-02-08 01:13:20,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79701 conditions, 10652 events. 5702/10652 cut-off events. For 314509/314557 co-relation queries the response was YES. Maximal size of possible extension queue 1002. Compared 93527 event pairs, 1602 based on Foata normal form. 58/10702 useless extension candidates. Maximal degree in co-relation 77760. Up to 6605 conditions per place. [2025-02-08 01:13:20,074 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 422 selfloop transitions, 58 changer transitions 0/489 dead transitions. [2025-02-08 01:13:20,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 489 transitions, 15437 flow [2025-02-08 01:13:20,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:13:20,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:13:20,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2025-02-08 01:13:20,075 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6232558139534884 [2025-02-08 01:13:20,075 INFO L175 Difference]: Start difference. First operand has 276 places, 425 transitions, 13751 flow. Second operand 5 states and 134 transitions. [2025-02-08 01:13:20,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 489 transitions, 15437 flow [2025-02-08 01:13:21,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 489 transitions, 15214 flow, removed 43 selfloop flow, removed 3 redundant places. [2025-02-08 01:13:21,306 INFO L231 Difference]: Finished difference. Result has 279 places, 429 transitions, 13897 flow [2025-02-08 01:13:21,307 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13546, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=13897, PETRI_PLACES=279, PETRI_TRANSITIONS=429} [2025-02-08 01:13:21,307 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 236 predicate places. [2025-02-08 01:13:21,307 INFO L471 AbstractCegarLoop]: Abstraction has has 279 places, 429 transitions, 13897 flow [2025-02-08 01:13:21,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:21,307 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:21,307 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] [2025-02-08 01:13:21,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2025-02-08 01:13:21,308 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:21,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:21,308 INFO L85 PathProgramCache]: Analyzing trace with hash -2145858043, now seen corresponding path program 6 times [2025-02-08 01:13:21,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:21,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530766566] [2025-02-08 01:13:21,308 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:13:21,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:21,311 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 24 statements into 1 equivalence classes. [2025-02-08 01:13:21,313 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 01:13:21,313 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-08 01:13:21,313 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:21,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:13:21,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:21,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530766566] [2025-02-08 01:13:21,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530766566] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:13:21,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:13:21,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:13:21,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380101793] [2025-02-08 01:13:21,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:21,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:13:21,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:21,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:13:21,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:13:21,381 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2025-02-08 01:13:21,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 429 transitions, 13897 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:21,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:21,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2025-02-08 01:13:21,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:23,385 INFO L124 PetriNetUnfolderBase]: 6129/11568 cut-off events. [2025-02-08 01:13:23,386 INFO L125 PetriNetUnfolderBase]: For 327184/327232 co-relation queries the response was YES. [2025-02-08 01:13:23,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82984 conditions, 11568 events. 6129/11568 cut-off events. For 327184/327232 co-relation queries the response was YES. Maximal size of possible extension queue 1092. Compared 103905 event pairs, 1812 based on Foata normal form. 58/11618 useless extension candidates. Maximal degree in co-relation 77395. Up to 8842 conditions per place. [2025-02-08 01:13:23,543 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 433 selfloop transitions, 43 changer transitions 1/486 dead transitions. [2025-02-08 01:13:23,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 486 transitions, 15583 flow [2025-02-08 01:13:23,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:13:23,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:13:23,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2025-02-08 01:13:23,544 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5767441860465117 [2025-02-08 01:13:23,544 INFO L175 Difference]: Start difference. First operand has 279 places, 429 transitions, 13897 flow. Second operand 5 states and 124 transitions. [2025-02-08 01:13:23,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 486 transitions, 15583 flow [2025-02-08 01:13:25,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 486 transitions, 15550 flow, removed 7 selfloop flow, removed 2 redundant places. [2025-02-08 01:13:25,258 INFO L231 Difference]: Finished difference. Result has 283 places, 436 transitions, 14264 flow [2025-02-08 01:13:25,258 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13865, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=14264, PETRI_PLACES=283, PETRI_TRANSITIONS=436} [2025-02-08 01:13:25,258 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 240 predicate places. [2025-02-08 01:13:25,259 INFO L471 AbstractCegarLoop]: Abstraction has has 283 places, 436 transitions, 14264 flow [2025-02-08 01:13:25,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:25,259 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:25,259 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] [2025-02-08 01:13:25,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2025-02-08 01:13:25,259 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:25,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:25,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1559174086, now seen corresponding path program 4 times [2025-02-08 01:13:25,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:25,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78566369] [2025-02-08 01:13:25,260 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:13:25,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:25,263 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 24 statements into 2 equivalence classes. [2025-02-08 01:13:25,266 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 01:13:25,266 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:13:25,266 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:25,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:13:25,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:25,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78566369] [2025-02-08 01:13:25,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78566369] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:13:25,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:13:25,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 01:13:25,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482038400] [2025-02-08 01:13:25,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:25,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:13:25,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:25,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:13:25,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:13:25,333 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2025-02-08 01:13:25,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 436 transitions, 14264 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:25,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:25,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2025-02-08 01:13:25,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:27,481 INFO L124 PetriNetUnfolderBase]: 6478/12304 cut-off events. [2025-02-08 01:13:27,481 INFO L125 PetriNetUnfolderBase]: For 356419/356557 co-relation queries the response was YES. [2025-02-08 01:13:27,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87563 conditions, 12304 events. 6478/12304 cut-off events. For 356419/356557 co-relation queries the response was YES. Maximal size of possible extension queue 1168. Compared 112145 event pairs, 1880 based on Foata normal form. 94/12382 useless extension candidates. Maximal degree in co-relation 81954. Up to 3265 conditions per place. [2025-02-08 01:13:27,673 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 398 selfloop transitions, 139 changer transitions 8/554 dead transitions. [2025-02-08 01:13:27,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 554 transitions, 17090 flow [2025-02-08 01:13:27,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:13:27,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:13:27,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 184 transitions. [2025-02-08 01:13:27,675 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7131782945736435 [2025-02-08 01:13:27,675 INFO L175 Difference]: Start difference. First operand has 283 places, 436 transitions, 14264 flow. Second operand 6 states and 184 transitions. [2025-02-08 01:13:27,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 554 transitions, 17090 flow [2025-02-08 01:13:29,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 554 transitions, 17063 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-02-08 01:13:29,700 INFO L231 Difference]: Finished difference. Result has 290 places, 452 transitions, 15367 flow [2025-02-08 01:13:29,701 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=14240, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=15367, PETRI_PLACES=290, PETRI_TRANSITIONS=452} [2025-02-08 01:13:29,702 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 247 predicate places. [2025-02-08 01:13:29,702 INFO L471 AbstractCegarLoop]: Abstraction has has 290 places, 452 transitions, 15367 flow [2025-02-08 01:13:29,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:29,702 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:29,702 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] [2025-02-08 01:13:29,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2025-02-08 01:13:29,702 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:29,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:29,703 INFO L85 PathProgramCache]: Analyzing trace with hash -855011744, now seen corresponding path program 5 times [2025-02-08 01:13:29,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:29,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459394745] [2025-02-08 01:13:29,703 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:13:29,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:29,711 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 24 statements into 1 equivalence classes. [2025-02-08 01:13:29,713 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 01:13:29,713 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:13:29,713 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:29,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:13:29,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:29,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459394745] [2025-02-08 01:13:29,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459394745] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:13:29,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:13:29,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:13:29,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221357725] [2025-02-08 01:13:29,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:29,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:13:29,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:29,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:13:29,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:13:29,783 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2025-02-08 01:13:29,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 452 transitions, 15367 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:29,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:29,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2025-02-08 01:13:29,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:32,180 INFO L124 PetriNetUnfolderBase]: 6445/12240 cut-off events. [2025-02-08 01:13:32,180 INFO L125 PetriNetUnfolderBase]: For 369734/369780 co-relation queries the response was YES. [2025-02-08 01:13:32,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89120 conditions, 12240 events. 6445/12240 cut-off events. For 369734/369780 co-relation queries the response was YES. Maximal size of possible extension queue 1160. Compared 111632 event pairs, 1821 based on Foata normal form. 56/12288 useless extension candidates. Maximal degree in co-relation 83331. Up to 7243 conditions per place. [2025-02-08 01:13:32,409 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 427 selfloop transitions, 71 changer transitions 3/510 dead transitions. [2025-02-08 01:13:32,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 510 transitions, 16974 flow [2025-02-08 01:13:32,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:13:32,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:13:32,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 139 transitions. [2025-02-08 01:13:32,411 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6465116279069767 [2025-02-08 01:13:32,411 INFO L175 Difference]: Start difference. First operand has 290 places, 452 transitions, 15367 flow. Second operand 5 states and 139 transitions. [2025-02-08 01:13:32,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 510 transitions, 16974 flow [2025-02-08 01:13:34,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 510 transitions, 16840 flow, removed 19 selfloop flow, removed 3 redundant places. [2025-02-08 01:13:34,478 INFO L231 Difference]: Finished difference. Result has 292 places, 456 transitions, 15591 flow [2025-02-08 01:13:34,478 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15171, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=15591, PETRI_PLACES=292, PETRI_TRANSITIONS=456} [2025-02-08 01:13:34,482 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 249 predicate places. [2025-02-08 01:13:34,482 INFO L471 AbstractCegarLoop]: Abstraction has has 292 places, 456 transitions, 15591 flow [2025-02-08 01:13:34,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:34,482 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:34,482 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] [2025-02-08 01:13:34,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2025-02-08 01:13:34,482 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:34,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:34,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1003129371, now seen corresponding path program 7 times [2025-02-08 01:13:34,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:34,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804896073] [2025-02-08 01:13:34,483 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:13:34,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:34,488 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 01:13:34,490 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 01:13:34,490 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:13:34,490 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:34,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:13:34,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:34,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804896073] [2025-02-08 01:13:34,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804896073] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:13:34,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:13:34,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:13:34,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368686996] [2025-02-08 01:13:34,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:34,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:13:34,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:34,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:13:34,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:13:34,559 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2025-02-08 01:13:34,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 456 transitions, 15591 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:34,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:34,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2025-02-08 01:13:34,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:36,918 INFO L124 PetriNetUnfolderBase]: 6547/12491 cut-off events. [2025-02-08 01:13:36,918 INFO L125 PetriNetUnfolderBase]: For 377071/377117 co-relation queries the response was YES. [2025-02-08 01:13:37,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90641 conditions, 12491 events. 6547/12491 cut-off events. For 377071/377117 co-relation queries the response was YES. Maximal size of possible extension queue 1183. Compared 114982 event pairs, 1481 based on Foata normal form. 54/12537 useless extension candidates. Maximal degree in co-relation 84644. Up to 7049 conditions per place. [2025-02-08 01:13:37,098 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 411 selfloop transitions, 91 changer transitions 0/511 dead transitions. [2025-02-08 01:13:37,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 511 transitions, 17190 flow [2025-02-08 01:13:37,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:13:37,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:13:37,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2025-02-08 01:13:37,099 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6325581395348837 [2025-02-08 01:13:37,099 INFO L175 Difference]: Start difference. First operand has 292 places, 456 transitions, 15591 flow. Second operand 5 states and 136 transitions. [2025-02-08 01:13:37,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 511 transitions, 17190 flow [2025-02-08 01:13:39,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 511 transitions, 17112 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-02-08 01:13:39,307 INFO L231 Difference]: Finished difference. Result has 295 places, 460 transitions, 15894 flow [2025-02-08 01:13:39,307 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15513, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=15894, PETRI_PLACES=295, PETRI_TRANSITIONS=460} [2025-02-08 01:13:39,308 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 252 predicate places. [2025-02-08 01:13:39,308 INFO L471 AbstractCegarLoop]: Abstraction has has 295 places, 460 transitions, 15894 flow [2025-02-08 01:13:39,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:39,308 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:39,308 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] [2025-02-08 01:13:39,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2025-02-08 01:13:39,308 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:39,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:39,309 INFO L85 PathProgramCache]: Analyzing trace with hash -800287499, now seen corresponding path program 8 times [2025-02-08 01:13:39,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:39,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520335287] [2025-02-08 01:13:39,313 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:13:39,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:39,318 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 1 equivalence classes. [2025-02-08 01:13:39,323 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 01:13:39,323 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:13:39,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:39,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:13:39,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:39,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520335287] [2025-02-08 01:13:39,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520335287] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:13:39,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:13:39,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:13:39,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236863959] [2025-02-08 01:13:39,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:39,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:13:39,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:39,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:13:39,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:13:39,417 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2025-02-08 01:13:39,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 460 transitions, 15894 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:39,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:39,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2025-02-08 01:13:39,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:42,096 INFO L124 PetriNetUnfolderBase]: 6539/12456 cut-off events. [2025-02-08 01:13:42,096 INFO L125 PetriNetUnfolderBase]: For 379313/379359 co-relation queries the response was YES. [2025-02-08 01:13:42,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91816 conditions, 12456 events. 6539/12456 cut-off events. For 379313/379359 co-relation queries the response was YES. Maximal size of possible extension queue 1180. Compared 114255 event pairs, 2059 based on Foata normal form. 54/12502 useless extension candidates. Maximal degree in co-relation 89970. Up to 9301 conditions per place. [2025-02-08 01:13:42,291 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 464 selfloop transitions, 38 changer transitions 0/511 dead transitions. [2025-02-08 01:13:42,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 511 transitions, 17400 flow [2025-02-08 01:13:42,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:13:42,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:13:42,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2025-02-08 01:13:42,293 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5813953488372093 [2025-02-08 01:13:42,293 INFO L175 Difference]: Start difference. First operand has 295 places, 460 transitions, 15894 flow. Second operand 5 states and 125 transitions. [2025-02-08 01:13:42,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 511 transitions, 17400 flow [2025-02-08 01:13:44,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 511 transitions, 17302 flow, removed 42 selfloop flow, removed 2 redundant places. [2025-02-08 01:13:44,477 INFO L231 Difference]: Finished difference. Result has 298 places, 463 transitions, 15951 flow [2025-02-08 01:13:44,477 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15742, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=15951, PETRI_PLACES=298, PETRI_TRANSITIONS=463} [2025-02-08 01:13:44,478 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 255 predicate places. [2025-02-08 01:13:44,478 INFO L471 AbstractCegarLoop]: Abstraction has has 298 places, 463 transitions, 15951 flow [2025-02-08 01:13:44,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:44,478 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:44,478 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] [2025-02-08 01:13:44,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2025-02-08 01:13:44,479 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:44,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:44,479 INFO L85 PathProgramCache]: Analyzing trace with hash 449515806, now seen corresponding path program 6 times [2025-02-08 01:13:44,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:44,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912385175] [2025-02-08 01:13:44,479 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:13:44,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:44,482 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 24 statements into 1 equivalence classes. [2025-02-08 01:13:44,484 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 01:13:44,484 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-08 01:13:44,484 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:44,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:13:44,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:44,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912385175] [2025-02-08 01:13:44,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912385175] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:13:44,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:13:44,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 01:13:44,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259301331] [2025-02-08 01:13:44,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:44,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:13:44,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:44,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:13:44,569 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:13:44,583 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2025-02-08 01:13:44,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 463 transitions, 15951 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:44,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:44,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2025-02-08 01:13:44,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:47,044 INFO L124 PetriNetUnfolderBase]: 6644/12679 cut-off events. [2025-02-08 01:13:47,044 INFO L125 PetriNetUnfolderBase]: For 393658/393771 co-relation queries the response was YES. [2025-02-08 01:13:47,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92968 conditions, 12679 events. 6644/12679 cut-off events. For 393658/393771 co-relation queries the response was YES. Maximal size of possible extension queue 1209. Compared 117143 event pairs, 2888 based on Foata normal form. 66/12721 useless extension candidates. Maximal degree in co-relation 86809. Up to 5918 conditions per place. [2025-02-08 01:13:47,241 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 439 selfloop transitions, 88 changer transitions 4/540 dead transitions. [2025-02-08 01:13:47,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 540 transitions, 17869 flow [2025-02-08 01:13:47,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:13:47,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:13:47,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 166 transitions. [2025-02-08 01:13:47,242 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6434108527131783 [2025-02-08 01:13:47,242 INFO L175 Difference]: Start difference. First operand has 298 places, 463 transitions, 15951 flow. Second operand 6 states and 166 transitions. [2025-02-08 01:13:47,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 540 transitions, 17869 flow