./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-exp-term-symm.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-symm.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 a6cef8f51d4b8dff634e07872101a48e47fb1f63ea17b45a5f4511bf6a262ddb --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:12:13,096 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:12:13,157 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 01:12:13,160 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:12:13,160 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:12:13,184 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:12:13,188 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:12:13,188 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:12:13,188 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:12:13,188 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:12:13,188 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:12:13,188 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:12:13,189 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:12:13,189 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:12:13,189 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:12:13,189 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:12:13,189 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:12:13,189 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 01:12:13,189 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:12:13,189 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 01:12:13,189 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:12:13,189 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:12:13,189 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:12:13,190 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:12:13,190 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 01:12:13,190 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:12:13,190 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:12:13,190 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:12:13,190 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:12:13,190 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:12:13,190 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:12:13,190 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:12:13,190 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:12:13,190 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:12:13,191 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:12:13,191 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:12:13,191 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:12:13,191 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:12:13,191 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:12:13,191 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:12:13,191 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:12:13,191 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:12:13,191 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:12:13,191 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 -> a6cef8f51d4b8dff634e07872101a48e47fb1f63ea17b45a5f4511bf6a262ddb [2025-02-08 01:12:13,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:12:13,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:12:13,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:12:13,412 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:12:13,412 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:12:13,413 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c [2025-02-08 01:12:14,583 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/382fc4efb/74b42a5f0d85441583af6261060dc1a3/FLAG8450a8a41 [2025-02-08 01:12:14,800 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:12:14,801 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c [2025-02-08 01:12:14,829 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/382fc4efb/74b42a5f0d85441583af6261060dc1a3/FLAG8450a8a41 [2025-02-08 01:12:15,155 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/382fc4efb/74b42a5f0d85441583af6261060dc1a3 [2025-02-08 01:12:15,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:12:15,158 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:12:15,159 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:12:15,159 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:12:15,166 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:12:15,166 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:12:15" (1/1) ... [2025-02-08 01:12:15,171 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bcac649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:15, skipping insertion in model container [2025-02-08 01:12:15,171 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:12:15" (1/1) ... [2025-02-08 01:12:15,185 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:12:15,295 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-symm.wvr.c[2654,2667] [2025-02-08 01:12:15,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:12:15,309 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:12:15,326 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-symm.wvr.c[2654,2667] [2025-02-08 01:12:15,330 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:12:15,341 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:12:15,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:15 WrapperNode [2025-02-08 01:12:15,342 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:12:15,343 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:12:15,344 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:12:15,344 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:12:15,347 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:15" (1/1) ... [2025-02-08 01:12:15,354 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:15" (1/1) ... [2025-02-08 01:12:15,372 INFO L138 Inliner]: procedures = 21, calls = 15, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 123 [2025-02-08 01:12:15,374 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:12:15,375 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:12:15,375 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:12:15,375 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:12:15,380 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:15" (1/1) ... [2025-02-08 01:12:15,381 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:15" (1/1) ... [2025-02-08 01:12:15,382 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:15" (1/1) ... [2025-02-08 01:12:15,394 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 01:12:15,395 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:15" (1/1) ... [2025-02-08 01:12:15,395 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:15" (1/1) ... [2025-02-08 01:12:15,398 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:15" (1/1) ... [2025-02-08 01:12:15,402 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:15" (1/1) ... [2025-02-08 01:12:15,402 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:15" (1/1) ... [2025-02-08 01:12:15,403 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:15" (1/1) ... [2025-02-08 01:12:15,404 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:12:15,408 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:12:15,408 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:12:15,408 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:12:15,409 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:15" (1/1) ... [2025-02-08 01:12:15,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:12:15,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:15,430 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 01:12:15,432 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 01:12:15,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:12:15,450 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 01:12:15,450 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 01:12:15,450 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 01:12:15,450 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 01:12:15,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:12:15,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:12:15,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:12:15,451 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 01:12:15,509 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:12:15,510 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:12:15,585 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L44-7: #t~ite2#1 := #t~ret1#1; [2025-02-08 01:12:15,585 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 01:12:15,585 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L44-9: havoc minus_#in~a#1, minus_#in~b#1; [2025-02-08 01:12:15,585 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L44-10: havoc minus_~a#1, minus_~b#1; [2025-02-08 01:12:15,585 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L44-11: #t~ret1#1 := minus_#res#1; [2025-02-08 01:12:15,625 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L50-7: #t~ite6#1 := #t~ret5#1; [2025-02-08 01:12:15,625 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 01:12:15,625 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L50-9: havoc minus_#in~a#1, minus_#in~b#1; [2025-02-08 01:12:15,625 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L50-10: havoc minus_~a#1, minus_~b#1; [2025-02-08 01:12:15,625 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L50-11: #t~ret5#1 := minus_#res#1; [2025-02-08 01:12:15,701 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 01:12:15,701 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:12:15,860 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:12:15,860 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:12:15,860 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:12:15 BoogieIcfgContainer [2025-02-08 01:12:15,860 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:12:15,863 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:12:15,863 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:12:15,866 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:12:15,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:12:15" (1/3) ... [2025-02-08 01:12:15,867 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bbbd786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:12:15, skipping insertion in model container [2025-02-08 01:12:15,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:15" (2/3) ... [2025-02-08 01:12:15,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bbbd786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:12:15, skipping insertion in model container [2025-02-08 01:12:15,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:12:15" (3/3) ... [2025-02-08 01:12:15,869 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-exp-term-symm.wvr.c [2025-02-08 01:12:15,880 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:12:15,881 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-exp-term-symm.wvr.c that has 3 procedures, 27 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-02-08 01:12:15,882 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 01:12:15,930 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-08 01:12:15,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 30 transitions, 74 flow [2025-02-08 01:12:15,983 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2025-02-08 01:12:15,986 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 01:12:15,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 28 events. 4/28 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 55 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2025-02-08 01:12:15,990 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 30 transitions, 74 flow [2025-02-08 01:12:15,992 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 66 flow [2025-02-08 01:12:15,998 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:12:16,009 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;@47a8feb1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:12:16,011 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-02-08 01:12:16,021 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 01:12:16,022 INFO L124 PetriNetUnfolderBase]: 4/26 cut-off events. [2025-02-08 01:12:16,022 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 01:12:16,022 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:16,022 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:12:16,023 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:16,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:16,027 INFO L85 PathProgramCache]: Analyzing trace with hash 264677831, now seen corresponding path program 1 times [2025-02-08 01:12:16,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:16,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448081181] [2025-02-08 01:12:16,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:12:16,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:16,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 01:12:16,114 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:12:16,114 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:12:16,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:16,306 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 01:12:16,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:16,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448081181] [2025-02-08 01:12:16,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448081181] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:16,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:16,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 01:12:16,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41964926] [2025-02-08 01:12:16,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:16,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:12:16,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:16,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:12:16,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:12:16,357 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:16,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 66 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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 01:12:16,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:16,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:16,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:16,526 INFO L124 PetriNetUnfolderBase]: 175/318 cut-off events. [2025-02-08 01:12:16,526 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2025-02-08 01:12:16,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 318 events. 175/318 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1480 event pairs, 68 based on Foata normal form. 1/264 useless extension candidates. Maximal degree in co-relation 567. Up to 158 conditions per place. [2025-02-08 01:12:16,529 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 40 selfloop transitions, 12 changer transitions 13/72 dead transitions. [2025-02-08 01:12:16,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 72 transitions, 307 flow [2025-02-08 01:12:16,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:16,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:16,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2025-02-08 01:12:16,536 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.575 [2025-02-08 01:12:16,537 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 66 flow. Second operand 8 states and 138 transitions. [2025-02-08 01:12:16,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 72 transitions, 307 flow [2025-02-08 01:12:16,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 72 transitions, 285 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 01:12:16,542 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 114 flow [2025-02-08 01:12:16,543 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=114, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2025-02-08 01:12:16,545 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2025-02-08 01:12:16,545 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 114 flow [2025-02-08 01:12:16,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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 01:12:16,545 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:16,545 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:12:16,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 01:12:16,545 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:16,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:16,546 INFO L85 PathProgramCache]: Analyzing trace with hash -76474016, now seen corresponding path program 1 times [2025-02-08 01:12:16,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:16,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360179798] [2025-02-08 01:12:16,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:12:16,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:16,552 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 01:12:16,557 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 01:12:16,557 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:12:16,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:16,627 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 01:12:16,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:16,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360179798] [2025-02-08 01:12:16,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360179798] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:16,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:16,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 01:12:16,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491340037] [2025-02-08 01:12:16,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:16,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 01:12:16,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:16,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 01:12:16,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 01:12:16,632 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2025-02-08 01:12:16,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 01:12:16,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:16,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2025-02-08 01:12:16,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:16,725 INFO L124 PetriNetUnfolderBase]: 160/317 cut-off events. [2025-02-08 01:12:16,726 INFO L125 PetriNetUnfolderBase]: For 135/140 co-relation queries the response was YES. [2025-02-08 01:12:16,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 750 conditions, 317 events. 160/317 cut-off events. For 135/140 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1378 event pairs, 22 based on Foata normal form. 10/291 useless extension candidates. Maximal degree in co-relation 506. Up to 159 conditions per place. [2025-02-08 01:12:16,728 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 45 selfloop transitions, 6 changer transitions 1/57 dead transitions. [2025-02-08 01:12:16,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 57 transitions, 284 flow [2025-02-08 01:12:16,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 01:12:16,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 01:12:16,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 75 transitions. [2025-02-08 01:12:16,729 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.625 [2025-02-08 01:12:16,729 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 114 flow. Second operand 4 states and 75 transitions. [2025-02-08 01:12:16,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 57 transitions, 284 flow [2025-02-08 01:12:16,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 57 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 01:12:16,731 INFO L231 Difference]: Finished difference. Result has 37 places, 38 transitions, 153 flow [2025-02-08 01:12:16,731 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=37, PETRI_TRANSITIONS=38} [2025-02-08 01:12:16,731 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2025-02-08 01:12:16,731 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 38 transitions, 153 flow [2025-02-08 01:12:16,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 01:12:16,731 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:16,732 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:12:16,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 01:12:16,732 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:16,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:16,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1449248702, now seen corresponding path program 2 times [2025-02-08 01:12:16,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:16,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609638580] [2025-02-08 01:12:16,733 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:12:16,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:16,739 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 1 equivalence classes. [2025-02-08 01:12:16,747 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 01:12:16,747 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:12:16,747 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:16,806 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 01:12:16,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:16,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609638580] [2025-02-08 01:12:16,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609638580] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:16,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:16,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 01:12:16,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819347805] [2025-02-08 01:12:16,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:16,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 01:12:16,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:16,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 01:12:16,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 01:12:16,816 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2025-02-08 01:12:16,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 38 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 01:12:16,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:16,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2025-02-08 01:12:16,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:16,946 INFO L124 PetriNetUnfolderBase]: 184/408 cut-off events. [2025-02-08 01:12:16,947 INFO L125 PetriNetUnfolderBase]: For 325/326 co-relation queries the response was YES. [2025-02-08 01:12:16,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1132 conditions, 408 events. 184/408 cut-off events. For 325/326 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2082 event pairs, 51 based on Foata normal form. 34/435 useless extension candidates. Maximal degree in co-relation 386. Up to 119 conditions per place. [2025-02-08 01:12:16,950 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 53 selfloop transitions, 3 changer transitions 17/78 dead transitions. [2025-02-08 01:12:16,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 78 transitions, 460 flow [2025-02-08 01:12:16,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:12:16,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:12:16,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 95 transitions. [2025-02-08 01:12:16,951 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2025-02-08 01:12:16,951 INFO L175 Difference]: Start difference. First operand has 37 places, 38 transitions, 153 flow. Second operand 5 states and 95 transitions. [2025-02-08 01:12:16,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 78 transitions, 460 flow [2025-02-08 01:12:16,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 78 transitions, 460 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 01:12:16,954 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 184 flow [2025-02-08 01:12:16,955 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=184, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2025-02-08 01:12:16,955 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2025-02-08 01:12:16,955 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 184 flow [2025-02-08 01:12:16,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 01:12:16,956 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:16,956 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:12:16,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 01:12:16,956 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:16,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:16,956 INFO L85 PathProgramCache]: Analyzing trace with hash 70883410, now seen corresponding path program 1 times [2025-02-08 01:12:16,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:16,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690113267] [2025-02-08 01:12:16,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:12:16,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:16,962 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 01:12:16,966 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 01:12:16,966 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:12:16,966 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:17,021 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 01:12:17,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:17,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690113267] [2025-02-08 01:12:17,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690113267] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:17,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:17,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 01:12:17,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385685046] [2025-02-08 01:12:17,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:17,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 01:12:17,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:17,022 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 01:12:17,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 01:12:17,030 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2025-02-08 01:12:17,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 01:12:17,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:17,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2025-02-08 01:12:17,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:17,099 INFO L124 PetriNetUnfolderBase]: 142/340 cut-off events. [2025-02-08 01:12:17,099 INFO L125 PetriNetUnfolderBase]: For 469/469 co-relation queries the response was YES. [2025-02-08 01:12:17,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1044 conditions, 340 events. 142/340 cut-off events. For 469/469 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1699 event pairs, 35 based on Foata normal form. 16/354 useless extension candidates. Maximal degree in co-relation 482. Up to 167 conditions per place. [2025-02-08 01:12:17,102 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 45 selfloop transitions, 6 changer transitions 7/63 dead transitions. [2025-02-08 01:12:17,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 63 transitions, 416 flow [2025-02-08 01:12:17,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 01:12:17,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 01:12:17,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2025-02-08 01:12:17,103 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2025-02-08 01:12:17,103 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 184 flow. Second operand 4 states and 74 transitions. [2025-02-08 01:12:17,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 63 transitions, 416 flow [2025-02-08 01:12:17,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 63 transitions, 386 flow, removed 8 selfloop flow, removed 2 redundant places. [2025-02-08 01:12:17,107 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 219 flow [2025-02-08 01:12:17,108 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=219, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2025-02-08 01:12:17,108 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2025-02-08 01:12:17,109 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 219 flow [2025-02-08 01:12:17,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 01:12:17,109 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:17,109 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:12:17,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 01:12:17,110 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:17,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:17,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1105396472, now seen corresponding path program 3 times [2025-02-08 01:12:17,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:17,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768496256] [2025-02-08 01:12:17,110 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:12:17,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:17,118 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 1 equivalence classes. [2025-02-08 01:12:17,124 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 01:12:17,124 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 01:12:17,124 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:17,160 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 01:12:17,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:17,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768496256] [2025-02-08 01:12:17,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768496256] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:17,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:17,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 01:12:17,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488121376] [2025-02-08 01:12:17,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:17,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 01:12:17,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:17,162 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 01:12:17,162 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 01:12:17,166 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2025-02-08 01:12:17,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 219 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 01:12:17,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:17,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2025-02-08 01:12:17,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:17,231 INFO L124 PetriNetUnfolderBase]: 115/273 cut-off events. [2025-02-08 01:12:17,231 INFO L125 PetriNetUnfolderBase]: For 467/467 co-relation queries the response was YES. [2025-02-08 01:12:17,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 832 conditions, 273 events. 115/273 cut-off events. For 467/467 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1278 event pairs, 22 based on Foata normal form. 13/285 useless extension candidates. Maximal degree in co-relation 447. Up to 115 conditions per place. [2025-02-08 01:12:17,232 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 41 selfloop transitions, 4 changer transitions 7/57 dead transitions. [2025-02-08 01:12:17,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 57 transitions, 380 flow [2025-02-08 01:12:17,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 01:12:17,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 01:12:17,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions. [2025-02-08 01:12:17,233 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2025-02-08 01:12:17,233 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 219 flow. Second operand 4 states and 70 transitions. [2025-02-08 01:12:17,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 57 transitions, 380 flow [2025-02-08 01:12:17,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 57 transitions, 374 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-02-08 01:12:17,236 INFO L231 Difference]: Finished difference. Result has 49 places, 35 transitions, 196 flow [2025-02-08 01:12:17,236 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=196, PETRI_PLACES=49, PETRI_TRANSITIONS=35} [2025-02-08 01:12:17,237 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2025-02-08 01:12:17,237 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 35 transitions, 196 flow [2025-02-08 01:12:17,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 01:12:17,237 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:17,237 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] [2025-02-08 01:12:17,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 01:12:17,238 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:17,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:17,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1184705257, now seen corresponding path program 1 times [2025-02-08 01:12:17,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:17,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377462494] [2025-02-08 01:12:17,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:12:17,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:17,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 01:12:17,249 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:17,249 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:12:17,249 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:17,357 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 01:12:17,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:17,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377462494] [2025-02-08 01:12:17,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377462494] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:17,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:17,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 01:12:17,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183936844] [2025-02-08 01:12:17,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:17,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 01:12:17,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:17,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 01:12:17,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-08 01:12:17,362 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:17,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 35 transitions, 196 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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 01:12:17,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:17,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:17,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:17,498 INFO L124 PetriNetUnfolderBase]: 100/233 cut-off events. [2025-02-08 01:12:17,498 INFO L125 PetriNetUnfolderBase]: For 298/319 co-relation queries the response was YES. [2025-02-08 01:12:17,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 233 events. 100/233 cut-off events. For 298/319 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 947 event pairs, 47 based on Foata normal form. 13/233 useless extension candidates. Maximal degree in co-relation 587. Up to 126 conditions per place. [2025-02-08 01:12:17,499 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 38 selfloop transitions, 6 changer transitions 12/67 dead transitions. [2025-02-08 01:12:17,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 67 transitions, 401 flow [2025-02-08 01:12:17,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:17,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:17,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2025-02-08 01:12:17,500 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5041666666666667 [2025-02-08 01:12:17,500 INFO L175 Difference]: Start difference. First operand has 49 places, 35 transitions, 196 flow. Second operand 8 states and 121 transitions. [2025-02-08 01:12:17,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 67 transitions, 401 flow [2025-02-08 01:12:17,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 67 transitions, 387 flow, removed 2 selfloop flow, removed 4 redundant places. [2025-02-08 01:12:17,502 INFO L231 Difference]: Finished difference. Result has 55 places, 38 transitions, 227 flow [2025-02-08 01:12:17,503 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=227, PETRI_PLACES=55, PETRI_TRANSITIONS=38} [2025-02-08 01:12:17,503 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 25 predicate places. [2025-02-08 01:12:17,503 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 38 transitions, 227 flow [2025-02-08 01:12:17,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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 01:12:17,503 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:17,503 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] [2025-02-08 01:12:17,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 01:12:17,504 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:17,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:17,504 INFO L85 PathProgramCache]: Analyzing trace with hash 728609390, now seen corresponding path program 1 times [2025-02-08 01:12:17,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:17,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791389212] [2025-02-08 01:12:17,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:12:17,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:17,509 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 01:12:17,512 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:17,513 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:12:17,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:17,601 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 01:12:17,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:17,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791389212] [2025-02-08 01:12:17,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791389212] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:17,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:17,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 01:12:17,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244342477] [2025-02-08 01:12:17,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:17,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 01:12:17,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:17,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 01:12:17,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-08 01:12:17,606 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:17,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 38 transitions, 227 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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 01:12:17,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:17,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:17,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:17,743 INFO L124 PetriNetUnfolderBase]: 118/271 cut-off events. [2025-02-08 01:12:17,743 INFO L125 PetriNetUnfolderBase]: For 414/434 co-relation queries the response was YES. [2025-02-08 01:12:17,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 916 conditions, 271 events. 118/271 cut-off events. For 414/434 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1177 event pairs, 54 based on Foata normal form. 9/266 useless extension candidates. Maximal degree in co-relation 891. Up to 168 conditions per place. [2025-02-08 01:12:17,745 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 34 selfloop transitions, 11 changer transitions 7/63 dead transitions. [2025-02-08 01:12:17,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 63 transitions, 422 flow [2025-02-08 01:12:17,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:17,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:17,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 116 transitions. [2025-02-08 01:12:17,746 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2025-02-08 01:12:17,746 INFO L175 Difference]: Start difference. First operand has 55 places, 38 transitions, 227 flow. Second operand 8 states and 116 transitions. [2025-02-08 01:12:17,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 63 transitions, 422 flow [2025-02-08 01:12:17,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 63 transitions, 401 flow, removed 9 selfloop flow, removed 4 redundant places. [2025-02-08 01:12:17,748 INFO L231 Difference]: Finished difference. Result has 61 places, 45 transitions, 306 flow [2025-02-08 01:12:17,748 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=306, PETRI_PLACES=61, PETRI_TRANSITIONS=45} [2025-02-08 01:12:17,749 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2025-02-08 01:12:17,749 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 45 transitions, 306 flow [2025-02-08 01:12:17,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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 01:12:17,749 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:17,749 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] [2025-02-08 01:12:17,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 01:12:17,749 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:17,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:17,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1436228142, now seen corresponding path program 2 times [2025-02-08 01:12:17,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:17,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284204209] [2025-02-08 01:12:17,750 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:12:17,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:17,754 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 1 equivalence classes. [2025-02-08 01:12:17,762 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:17,762 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:12:17,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:17,859 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 01:12:17,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:17,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284204209] [2025-02-08 01:12:17,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284204209] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:17,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:17,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 01:12:17,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105061986] [2025-02-08 01:12:17,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:17,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 01:12:17,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:17,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 01:12:17,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-08 01:12:17,867 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:17,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 45 transitions, 306 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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 01:12:17,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:17,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:17,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:17,998 INFO L124 PetriNetUnfolderBase]: 117/271 cut-off events. [2025-02-08 01:12:17,998 INFO L125 PetriNetUnfolderBase]: For 588/614 co-relation queries the response was YES. [2025-02-08 01:12:17,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 271 events. 117/271 cut-off events. For 588/614 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1187 event pairs, 43 based on Foata normal form. 11/270 useless extension candidates. Maximal degree in co-relation 1027. Up to 130 conditions per place. [2025-02-08 01:12:18,000 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 43 selfloop transitions, 8 changer transitions 12/74 dead transitions. [2025-02-08 01:12:18,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 74 transitions, 547 flow [2025-02-08 01:12:18,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:18,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:18,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2025-02-08 01:12:18,001 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5041666666666667 [2025-02-08 01:12:18,001 INFO L175 Difference]: Start difference. First operand has 61 places, 45 transitions, 306 flow. Second operand 8 states and 121 transitions. [2025-02-08 01:12:18,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 74 transitions, 547 flow [2025-02-08 01:12:18,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 74 transitions, 508 flow, removed 15 selfloop flow, removed 4 redundant places. [2025-02-08 01:12:18,003 INFO L231 Difference]: Finished difference. Result has 65 places, 44 transitions, 291 flow [2025-02-08 01:12:18,004 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=291, PETRI_PLACES=65, PETRI_TRANSITIONS=44} [2025-02-08 01:12:18,004 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2025-02-08 01:12:18,004 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 44 transitions, 291 flow [2025-02-08 01:12:18,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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 01:12:18,004 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:18,004 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] [2025-02-08 01:12:18,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 01:12:18,005 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:18,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:18,005 INFO L85 PathProgramCache]: Analyzing trace with hash 2042544200, now seen corresponding path program 3 times [2025-02-08 01:12:18,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:18,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288908028] [2025-02-08 01:12:18,005 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:12:18,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:18,009 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 1 equivalence classes. [2025-02-08 01:12:18,012 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:18,012 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 01:12:18,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:18,095 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 01:12:18,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:18,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288908028] [2025-02-08 01:12:18,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288908028] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:18,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:18,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 01:12:18,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908045887] [2025-02-08 01:12:18,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:18,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 01:12:18,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:18,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 01:12:18,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-08 01:12:18,100 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:18,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 44 transitions, 291 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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 01:12:18,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:18,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:18,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:18,220 INFO L124 PetriNetUnfolderBase]: 113/269 cut-off events. [2025-02-08 01:12:18,220 INFO L125 PetriNetUnfolderBase]: For 568/585 co-relation queries the response was YES. [2025-02-08 01:12:18,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1058 conditions, 269 events. 113/269 cut-off events. For 568/585 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1197 event pairs, 53 based on Foata normal form. 9/266 useless extension candidates. Maximal degree in co-relation 1030. Up to 175 conditions per place. [2025-02-08 01:12:18,221 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 33 selfloop transitions, 12 changer transitions 7/63 dead transitions. [2025-02-08 01:12:18,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 63 transitions, 488 flow [2025-02-08 01:12:18,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:18,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:18,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2025-02-08 01:12:18,222 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4708333333333333 [2025-02-08 01:12:18,222 INFO L175 Difference]: Start difference. First operand has 65 places, 44 transitions, 291 flow. Second operand 8 states and 113 transitions. [2025-02-08 01:12:18,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 63 transitions, 488 flow [2025-02-08 01:12:18,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 63 transitions, 434 flow, removed 7 selfloop flow, removed 8 redundant places. [2025-02-08 01:12:18,225 INFO L231 Difference]: Finished difference. Result has 64 places, 47 transitions, 306 flow [2025-02-08 01:12:18,225 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=306, PETRI_PLACES=64, PETRI_TRANSITIONS=47} [2025-02-08 01:12:18,225 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 34 predicate places. [2025-02-08 01:12:18,226 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 47 transitions, 306 flow [2025-02-08 01:12:18,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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 01:12:18,226 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:18,226 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] [2025-02-08 01:12:18,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 01:12:18,226 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:18,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:18,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1607413212, now seen corresponding path program 4 times [2025-02-08 01:12:18,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:18,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267747907] [2025-02-08 01:12:18,227 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:12:18,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:18,231 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:18,235 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:18,235 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:12:18,235 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:18,333 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 01:12:18,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:18,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267747907] [2025-02-08 01:12:18,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267747907] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:18,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:18,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 01:12:18,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794268580] [2025-02-08 01:12:18,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:18,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 01:12:18,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:18,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 01:12:18,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-08 01:12:18,338 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:18,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 47 transitions, 306 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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 01:12:18,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:18,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:18,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:18,479 INFO L124 PetriNetUnfolderBase]: 115/275 cut-off events. [2025-02-08 01:12:18,479 INFO L125 PetriNetUnfolderBase]: For 478/495 co-relation queries the response was YES. [2025-02-08 01:12:18,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1034 conditions, 275 events. 115/275 cut-off events. For 478/495 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1251 event pairs, 53 based on Foata normal form. 9/272 useless extension candidates. Maximal degree in co-relation 1008. Up to 170 conditions per place. [2025-02-08 01:12:18,480 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 40 selfloop transitions, 12 changer transitions 9/72 dead transitions. [2025-02-08 01:12:18,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 72 transitions, 540 flow [2025-02-08 01:12:18,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:18,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:18,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 117 transitions. [2025-02-08 01:12:18,481 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4875 [2025-02-08 01:12:18,481 INFO L175 Difference]: Start difference. First operand has 64 places, 47 transitions, 306 flow. Second operand 8 states and 117 transitions. [2025-02-08 01:12:18,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 72 transitions, 540 flow [2025-02-08 01:12:18,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 72 transitions, 506 flow, removed 8 selfloop flow, removed 3 redundant places. [2025-02-08 01:12:18,484 INFO L231 Difference]: Finished difference. Result has 70 places, 48 transitions, 332 flow [2025-02-08 01:12:18,484 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=332, PETRI_PLACES=70, PETRI_TRANSITIONS=48} [2025-02-08 01:12:18,484 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2025-02-08 01:12:18,484 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 48 transitions, 332 flow [2025-02-08 01:12:18,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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 01:12:18,487 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:18,487 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] [2025-02-08 01:12:18,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-08 01:12:18,488 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:18,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:18,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1243065416, now seen corresponding path program 5 times [2025-02-08 01:12:18,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:18,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018134947] [2025-02-08 01:12:18,492 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:12:18,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:18,496 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:18,502 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:18,505 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:12:18,505 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:18,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:18,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:18,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018134947] [2025-02-08 01:12:18,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018134947] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:18,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201900019] [2025-02-08 01:12:18,606 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:12:18,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:18,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:18,608 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:12:18,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 01:12:18,643 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:18,655 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:18,655 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:12:18,655 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:18,656 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 01:12:18,658 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:18,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:18,768 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:18,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:18,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201900019] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:12:18,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:12:18,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2025-02-08 01:12:18,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391678848] [2025-02-08 01:12:18,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:12:18,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-08 01:12:18,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:18,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-08 01:12:18,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2025-02-08 01:12:18,827 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:18,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 48 transitions, 332 flow. Second operand has 14 states, 14 states have (on average 10.714285714285714) internal successors, (150), 14 states have internal predecessors, (150), 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 01:12:18,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:18,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:18,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:18,964 INFO L124 PetriNetUnfolderBase]: 108/260 cut-off events. [2025-02-08 01:12:18,964 INFO L125 PetriNetUnfolderBase]: For 537/554 co-relation queries the response was YES. [2025-02-08 01:12:18,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1021 conditions, 260 events. 108/260 cut-off events. For 537/554 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1149 event pairs, 53 based on Foata normal form. 9/257 useless extension candidates. Maximal degree in co-relation 992. Up to 167 conditions per place. [2025-02-08 01:12:18,966 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 38 selfloop transitions, 11 changer transitions 7/67 dead transitions. [2025-02-08 01:12:18,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 67 transitions, 513 flow [2025-02-08 01:12:18,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:18,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:18,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 114 transitions. [2025-02-08 01:12:18,967 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.475 [2025-02-08 01:12:18,967 INFO L175 Difference]: Start difference. First operand has 70 places, 48 transitions, 332 flow. Second operand 8 states and 114 transitions. [2025-02-08 01:12:18,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 67 transitions, 513 flow [2025-02-08 01:12:18,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 67 transitions, 476 flow, removed 8 selfloop flow, removed 6 redundant places. [2025-02-08 01:12:18,970 INFO L231 Difference]: Finished difference. Result has 71 places, 47 transitions, 318 flow [2025-02-08 01:12:18,970 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=318, PETRI_PLACES=71, PETRI_TRANSITIONS=47} [2025-02-08 01:12:18,970 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2025-02-08 01:12:18,971 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 47 transitions, 318 flow [2025-02-08 01:12:18,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.714285714285714) internal successors, (150), 14 states have internal predecessors, (150), 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 01:12:18,971 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:18,971 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] [2025-02-08 01:12:18,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 01:12:19,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-02-08 01:12:19,175 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:19,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:19,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1384374890, now seen corresponding path program 6 times [2025-02-08 01:12:19,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:19,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686843665] [2025-02-08 01:12:19,176 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:12:19,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:19,180 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:19,186 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:19,186 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-08 01:12:19,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:19,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:19,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:19,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686843665] [2025-02-08 01:12:19,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686843665] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:19,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119990509] [2025-02-08 01:12:19,261 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:12:19,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:19,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:19,263 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:12:19,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 01:12:19,316 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:19,329 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:19,330 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-08 01:12:19,330 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:19,330 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 01:12:19,331 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:19,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:19,401 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:19,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:19,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119990509] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:12:19,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:12:19,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2025-02-08 01:12:19,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891366946] [2025-02-08 01:12:19,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:12:19,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-08 01:12:19,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:19,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-08 01:12:19,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2025-02-08 01:12:19,456 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:19,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 47 transitions, 318 flow. Second operand has 14 states, 14 states have (on average 10.714285714285714) internal successors, (150), 14 states have internal predecessors, (150), 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 01:12:19,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:19,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:19,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:19,624 INFO L124 PetriNetUnfolderBase]: 105/256 cut-off events. [2025-02-08 01:12:19,625 INFO L125 PetriNetUnfolderBase]: For 427/444 co-relation queries the response was YES. [2025-02-08 01:12:19,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 970 conditions, 256 events. 105/256 cut-off events. For 427/444 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1134 event pairs, 53 based on Foata normal form. 9/253 useless extension candidates. Maximal degree in co-relation 942. Up to 167 conditions per place. [2025-02-08 01:12:19,626 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 34 selfloop transitions, 8 changer transitions 12/65 dead transitions. [2025-02-08 01:12:19,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 65 transitions, 494 flow [2025-02-08 01:12:19,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:19,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:19,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2025-02-08 01:12:19,627 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2025-02-08 01:12:19,627 INFO L175 Difference]: Start difference. First operand has 71 places, 47 transitions, 318 flow. Second operand 8 states and 112 transitions. [2025-02-08 01:12:19,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 65 transitions, 494 flow [2025-02-08 01:12:19,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 65 transitions, 468 flow, removed 2 selfloop flow, removed 6 redundant places. [2025-02-08 01:12:19,629 INFO L231 Difference]: Finished difference. Result has 70 places, 44 transitions, 282 flow [2025-02-08 01:12:19,629 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=282, PETRI_PLACES=70, PETRI_TRANSITIONS=44} [2025-02-08 01:12:19,630 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2025-02-08 01:12:19,630 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 44 transitions, 282 flow [2025-02-08 01:12:19,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.714285714285714) internal successors, (150), 14 states have internal predecessors, (150), 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 01:12:19,630 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:19,630 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] [2025-02-08 01:12:19,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-08 01:12:19,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:19,835 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:19,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:19,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1981658644, now seen corresponding path program 7 times [2025-02-08 01:12:19,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:19,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560582709] [2025-02-08 01:12:19,837 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:12:19,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:19,842 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 01:12:19,846 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:19,846 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:12:19,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:19,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:19,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:19,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560582709] [2025-02-08 01:12:19,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560582709] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:19,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132489888] [2025-02-08 01:12:19,916 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:12:19,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:19,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:19,920 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:12:19,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 01:12:19,952 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 01:12:19,962 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:19,963 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:12:19,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:19,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 01:12:19,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:20,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:20,038 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:20,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:20,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132489888] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:12:20,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:12:20,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2025-02-08 01:12:20,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34036636] [2025-02-08 01:12:20,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:12:20,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-08 01:12:20,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:20,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-08 01:12:20,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2025-02-08 01:12:20,096 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:20,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 44 transitions, 282 flow. Second operand has 14 states, 14 states have (on average 10.714285714285714) internal successors, (150), 14 states have internal predecessors, (150), 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 01:12:20,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:20,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:20,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:20,277 INFO L124 PetriNetUnfolderBase]: 104/253 cut-off events. [2025-02-08 01:12:20,277 INFO L125 PetriNetUnfolderBase]: For 416/433 co-relation queries the response was YES. [2025-02-08 01:12:20,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 947 conditions, 253 events. 104/253 cut-off events. For 416/433 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1105 event pairs, 53 based on Foata normal form. 9/250 useless extension candidates. Maximal degree in co-relation 920. Up to 169 conditions per place. [2025-02-08 01:12:20,278 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 32 selfloop transitions, 11 changer transitions 6/60 dead transitions. [2025-02-08 01:12:20,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 60 transitions, 454 flow [2025-02-08 01:12:20,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:20,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:20,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2025-02-08 01:12:20,279 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2025-02-08 01:12:20,279 INFO L175 Difference]: Start difference. First operand has 70 places, 44 transitions, 282 flow. Second operand 8 states and 112 transitions. [2025-02-08 01:12:20,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 60 transitions, 454 flow [2025-02-08 01:12:20,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 60 transitions, 428 flow, removed 2 selfloop flow, removed 5 redundant places. [2025-02-08 01:12:20,281 INFO L231 Difference]: Finished difference. Result has 68 places, 46 transitions, 310 flow [2025-02-08 01:12:20,281 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=310, PETRI_PLACES=68, PETRI_TRANSITIONS=46} [2025-02-08 01:12:20,282 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 38 predicate places. [2025-02-08 01:12:20,282 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 46 transitions, 310 flow [2025-02-08 01:12:20,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.714285714285714) internal successors, (150), 14 states have internal predecessors, (150), 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 01:12:20,282 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:20,282 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] [2025-02-08 01:12:20,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-08 01:12:20,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:20,486 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:20,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:20,487 INFO L85 PathProgramCache]: Analyzing trace with hash 381766626, now seen corresponding path program 8 times [2025-02-08 01:12:20,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:20,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856801716] [2025-02-08 01:12:20,487 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:12:20,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:20,491 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:20,495 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:20,495 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:12:20,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:20,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:20,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:20,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856801716] [2025-02-08 01:12:20,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856801716] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:20,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858843136] [2025-02-08 01:12:20,569 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:12:20,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:20,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:20,571 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:12:20,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 01:12:20,608 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:20,619 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:20,619 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:12:20,619 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:20,620 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 01:12:20,621 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:20,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:20,697 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:20,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:20,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858843136] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:12:20,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:12:20,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2025-02-08 01:12:20,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274127419] [2025-02-08 01:12:20,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:12:20,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-08 01:12:20,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:20,743 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-08 01:12:20,743 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2025-02-08 01:12:20,752 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:20,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 46 transitions, 310 flow. Second operand has 14 states, 14 states have (on average 10.714285714285714) internal successors, (150), 14 states have internal predecessors, (150), 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 01:12:20,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:20,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:20,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:20,881 INFO L124 PetriNetUnfolderBase]: 101/248 cut-off events. [2025-02-08 01:12:20,882 INFO L125 PetriNetUnfolderBase]: For 413/430 co-relation queries the response was YES. [2025-02-08 01:12:20,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 923 conditions, 248 events. 101/248 cut-off events. For 413/430 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1078 event pairs, 54 based on Foata normal form. 9/245 useless extension candidates. Maximal degree in co-relation 896. Up to 167 conditions per place. [2025-02-08 01:12:20,883 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 32 selfloop transitions, 10 changer transitions 6/59 dead transitions. [2025-02-08 01:12:20,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 59 transitions, 449 flow [2025-02-08 01:12:20,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:20,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:20,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 111 transitions. [2025-02-08 01:12:20,884 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4625 [2025-02-08 01:12:20,884 INFO L175 Difference]: Start difference. First operand has 68 places, 46 transitions, 310 flow. Second operand 8 states and 111 transitions. [2025-02-08 01:12:20,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 59 transitions, 449 flow [2025-02-08 01:12:20,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 59 transitions, 425 flow, removed 1 selfloop flow, removed 5 redundant places. [2025-02-08 01:12:20,886 INFO L231 Difference]: Finished difference. Result has 70 places, 45 transitions, 306 flow [2025-02-08 01:12:20,886 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=306, PETRI_PLACES=70, PETRI_TRANSITIONS=45} [2025-02-08 01:12:20,886 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2025-02-08 01:12:20,886 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 45 transitions, 306 flow [2025-02-08 01:12:20,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.714285714285714) internal successors, (150), 14 states have internal predecessors, (150), 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 01:12:20,887 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:20,888 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] [2025-02-08 01:12:20,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-08 01:12:21,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-02-08 01:12:21,088 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:21,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:21,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1330378842, now seen corresponding path program 9 times [2025-02-08 01:12:21,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:21,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116203987] [2025-02-08 01:12:21,089 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:12:21,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:21,094 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:21,099 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:21,100 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:12:21,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:21,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:21,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:21,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116203987] [2025-02-08 01:12:21,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116203987] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:21,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943499672] [2025-02-08 01:12:21,178 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:12:21,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:21,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:21,186 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:12:21,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 01:12:21,222 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:21,231 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:21,231 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:12:21,231 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:21,232 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 01:12:21,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:21,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:21,372 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:21,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:21,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943499672] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:12:21,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:12:21,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2025-02-08 01:12:21,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101855813] [2025-02-08 01:12:21,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:12:21,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-08 01:12:21,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:21,434 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-08 01:12:21,434 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2025-02-08 01:12:21,440 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:21,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 45 transitions, 306 flow. Second operand has 14 states, 14 states have (on average 10.714285714285714) internal successors, (150), 14 states have internal predecessors, (150), 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 01:12:21,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:21,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:21,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:21,586 INFO L124 PetriNetUnfolderBase]: 100/248 cut-off events. [2025-02-08 01:12:21,586 INFO L125 PetriNetUnfolderBase]: For 424/441 co-relation queries the response was YES. [2025-02-08 01:12:21,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 917 conditions, 248 events. 100/248 cut-off events. For 424/441 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1087 event pairs, 54 based on Foata normal form. 9/245 useless extension candidates. Maximal degree in co-relation 889. Up to 165 conditions per place. [2025-02-08 01:12:21,587 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 31 selfloop transitions, 7 changer transitions 10/59 dead transitions. [2025-02-08 01:12:21,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 59 transitions, 444 flow [2025-02-08 01:12:21,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:21,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:21,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 111 transitions. [2025-02-08 01:12:21,588 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4625 [2025-02-08 01:12:21,588 INFO L175 Difference]: Start difference. First operand has 70 places, 45 transitions, 306 flow. Second operand 8 states and 111 transitions. [2025-02-08 01:12:21,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 59 transitions, 444 flow [2025-02-08 01:12:21,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 59 transitions, 424 flow, removed 1 selfloop flow, removed 5 redundant places. [2025-02-08 01:12:21,590 INFO L231 Difference]: Finished difference. Result has 71 places, 42 transitions, 273 flow [2025-02-08 01:12:21,590 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=273, PETRI_PLACES=71, PETRI_TRANSITIONS=42} [2025-02-08 01:12:21,590 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2025-02-08 01:12:21,590 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 42 transitions, 273 flow [2025-02-08 01:12:21,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.714285714285714) internal successors, (150), 14 states have internal predecessors, (150), 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 01:12:21,591 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:21,591 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] [2025-02-08 01:12:21,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 01:12:21,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-02-08 01:12:21,795 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:21,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:21,795 INFO L85 PathProgramCache]: Analyzing trace with hash -250229900, now seen corresponding path program 10 times [2025-02-08 01:12:21,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:21,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660209881] [2025-02-08 01:12:21,795 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:12:21,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:21,803 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:21,807 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:21,807 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:12:21,807 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:21,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:21,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:21,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660209881] [2025-02-08 01:12:21,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660209881] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:21,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634230217] [2025-02-08 01:12:21,895 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:12:21,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:21,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:21,899 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:12:21,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 01:12:21,933 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:21,943 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:21,943 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:12:21,943 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:21,944 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 01:12:21,945 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:22,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:22,016 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:22,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:22,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634230217] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:12:22,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:12:22,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2025-02-08 01:12:22,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421985101] [2025-02-08 01:12:22,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:12:22,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-08 01:12:22,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:22,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-08 01:12:22,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2025-02-08 01:12:22,059 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:22,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 42 transitions, 273 flow. Second operand has 14 states, 14 states have (on average 10.714285714285714) internal successors, (150), 14 states have internal predecessors, (150), 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 01:12:22,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:22,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:22,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:22,191 INFO L124 PetriNetUnfolderBase]: 94/235 cut-off events. [2025-02-08 01:12:22,191 INFO L125 PetriNetUnfolderBase]: For 399/416 co-relation queries the response was YES. [2025-02-08 01:12:22,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 862 conditions, 235 events. 94/235 cut-off events. For 399/416 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1006 event pairs, 53 based on Foata normal form. 9/232 useless extension candidates. Maximal degree in co-relation 833. Up to 158 conditions per place. [2025-02-08 01:12:22,192 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 25 selfloop transitions, 3 changer transitions 16/55 dead transitions. [2025-02-08 01:12:22,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 55 transitions, 399 flow [2025-02-08 01:12:22,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:22,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:22,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2025-02-08 01:12:22,193 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45416666666666666 [2025-02-08 01:12:22,193 INFO L175 Difference]: Start difference. First operand has 71 places, 42 transitions, 273 flow. Second operand 8 states and 109 transitions. [2025-02-08 01:12:22,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 55 transitions, 399 flow [2025-02-08 01:12:22,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 55 transitions, 371 flow, removed 3 selfloop flow, removed 10 redundant places. [2025-02-08 01:12:22,195 INFO L231 Difference]: Finished difference. Result has 65 places, 36 transitions, 211 flow [2025-02-08 01:12:22,195 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=211, PETRI_PLACES=65, PETRI_TRANSITIONS=36} [2025-02-08 01:12:22,195 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2025-02-08 01:12:22,195 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 36 transitions, 211 flow [2025-02-08 01:12:22,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.714285714285714) internal successors, (150), 14 states have internal predecessors, (150), 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 01:12:22,196 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:22,196 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] [2025-02-08 01:12:22,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 01:12:22,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-02-08 01:12:22,396 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:22,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:22,397 INFO L85 PathProgramCache]: Analyzing trace with hash 2061034302, now seen corresponding path program 11 times [2025-02-08 01:12:22,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:22,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491343692] [2025-02-08 01:12:22,397 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:12:22,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:22,404 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:22,411 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:22,411 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:12:22,411 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:22,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:22,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:22,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491343692] [2025-02-08 01:12:22,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491343692] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:22,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007229189] [2025-02-08 01:12:22,503 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:12:22,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:22,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:22,508 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:12:22,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-08 01:12:22,540 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:22,551 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:22,552 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:12:22,552 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:22,552 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 01:12:22,553 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:22,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:22,604 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:22,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:22,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007229189] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:12:22,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:12:22,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2025-02-08 01:12:22,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752132314] [2025-02-08 01:12:22,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:12:22,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 01:12:22,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:22,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 01:12:22,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2025-02-08 01:12:22,641 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:22,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 36 transitions, 211 flow. Second operand has 12 states, 12 states have (on average 10.75) internal successors, (129), 12 states have internal predecessors, (129), 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 01:12:22,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:22,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:22,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:22,766 INFO L124 PetriNetUnfolderBase]: 87/211 cut-off events. [2025-02-08 01:12:22,766 INFO L125 PetriNetUnfolderBase]: For 336/344 co-relation queries the response was YES. [2025-02-08 01:12:22,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 754 conditions, 211 events. 87/211 cut-off events. For 336/344 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 825 event pairs, 40 based on Foata normal form. 6/207 useless extension candidates. Maximal degree in co-relation 728. Up to 135 conditions per place. [2025-02-08 01:12:22,768 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 33 selfloop transitions, 9 changer transitions 7/60 dead transitions. [2025-02-08 01:12:22,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 60 transitions, 427 flow [2025-02-08 01:12:22,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:22,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:22,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2025-02-08 01:12:22,768 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4708333333333333 [2025-02-08 01:12:22,768 INFO L175 Difference]: Start difference. First operand has 65 places, 36 transitions, 211 flow. Second operand 8 states and 113 transitions. [2025-02-08 01:12:22,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 60 transitions, 427 flow [2025-02-08 01:12:22,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 60 transitions, 378 flow, removed 10 selfloop flow, removed 8 redundant places. [2025-02-08 01:12:22,770 INFO L231 Difference]: Finished difference. Result has 61 places, 43 transitions, 271 flow [2025-02-08 01:12:22,770 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=271, PETRI_PLACES=61, PETRI_TRANSITIONS=43} [2025-02-08 01:12:22,771 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2025-02-08 01:12:22,771 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 43 transitions, 271 flow [2025-02-08 01:12:22,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.75) internal successors, (129), 12 states have internal predecessors, (129), 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 01:12:22,771 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:22,771 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] [2025-02-08 01:12:22,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-08 01:12:22,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:22,972 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:22,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:22,974 INFO L85 PathProgramCache]: Analyzing trace with hash -532942002, now seen corresponding path program 12 times [2025-02-08 01:12:22,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:22,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528493364] [2025-02-08 01:12:22,974 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:12:22,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:22,978 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:22,986 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:22,986 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-08 01:12:22,986 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:23,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:23,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:23,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528493364] [2025-02-08 01:12:23,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528493364] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:23,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106742097] [2025-02-08 01:12:23,041 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:12:23,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:23,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:23,046 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:12:23,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-08 01:12:23,076 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:23,086 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:23,086 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-08 01:12:23,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:23,086 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 01:12:23,087 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:23,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:23,137 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:23,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:23,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106742097] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:12:23,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:12:23,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2025-02-08 01:12:23,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281157421] [2025-02-08 01:12:23,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:12:23,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 01:12:23,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:23,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 01:12:23,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2025-02-08 01:12:23,174 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:23,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 43 transitions, 271 flow. Second operand has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 13 states have internal predecessors, (140), 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 01:12:23,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:23,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:23,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:23,283 INFO L124 PetriNetUnfolderBase]: 87/212 cut-off events. [2025-02-08 01:12:23,283 INFO L125 PetriNetUnfolderBase]: For 352/360 co-relation queries the response was YES. [2025-02-08 01:12:23,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798 conditions, 212 events. 87/212 cut-off events. For 352/360 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 817 event pairs, 41 based on Foata normal form. 6/208 useless extension candidates. Maximal degree in co-relation 771. Up to 135 conditions per place. [2025-02-08 01:12:23,284 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 29 selfloop transitions, 15 changer transitions 6/61 dead transitions. [2025-02-08 01:12:23,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 61 transitions, 457 flow [2025-02-08 01:12:23,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:23,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:23,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2025-02-08 01:12:23,285 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2025-02-08 01:12:23,285 INFO L175 Difference]: Start difference. First operand has 61 places, 43 transitions, 271 flow. Second operand 8 states and 110 transitions. [2025-02-08 01:12:23,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 61 transitions, 457 flow [2025-02-08 01:12:23,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 61 transitions, 443 flow, removed 7 selfloop flow, removed 2 redundant places. [2025-02-08 01:12:23,287 INFO L231 Difference]: Finished difference. Result has 69 places, 49 transitions, 362 flow [2025-02-08 01:12:23,287 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=362, PETRI_PLACES=69, PETRI_TRANSITIONS=49} [2025-02-08 01:12:23,287 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2025-02-08 01:12:23,287 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 49 transitions, 362 flow [2025-02-08 01:12:23,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 13 states have internal predecessors, (140), 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 01:12:23,287 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:23,288 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] [2025-02-08 01:12:23,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-08 01:12:23,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-08 01:12:23,488 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:23,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:23,492 INFO L85 PathProgramCache]: Analyzing trace with hash -174605558, now seen corresponding path program 13 times [2025-02-08 01:12:23,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:23,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742344357] [2025-02-08 01:12:23,493 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:12:23,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:23,495 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 01:12:23,497 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:23,501 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:12:23,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:23,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:23,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:23,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742344357] [2025-02-08 01:12:23,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742344357] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:23,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546698807] [2025-02-08 01:12:23,573 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:12:23,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:23,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:23,582 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:12:23,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-08 01:12:23,634 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 01:12:23,646 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:23,646 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:12:23,646 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:23,647 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 01:12:23,647 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:23,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:23,703 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:23,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:23,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546698807] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:12:23,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:12:23,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2025-02-08 01:12:23,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935005124] [2025-02-08 01:12:23,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:12:23,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 01:12:23,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:23,743 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 01:12:23,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2025-02-08 01:12:23,751 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:23,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 49 transitions, 362 flow. Second operand has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 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 01:12:23,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:23,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:23,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:23,879 INFO L124 PetriNetUnfolderBase]: 86/213 cut-off events. [2025-02-08 01:12:23,879 INFO L125 PetriNetUnfolderBase]: For 482/490 co-relation queries the response was YES. [2025-02-08 01:12:23,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 882 conditions, 213 events. 86/213 cut-off events. For 482/490 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 828 event pairs, 34 based on Foata normal form. 6/209 useless extension candidates. Maximal degree in co-relation 851. Up to 103 conditions per place. [2025-02-08 01:12:23,881 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 37 selfloop transitions, 10 changer transitions 8/66 dead transitions. [2025-02-08 01:12:23,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 66 transitions, 542 flow [2025-02-08 01:12:23,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:23,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:23,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 114 transitions. [2025-02-08 01:12:23,884 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.475 [2025-02-08 01:12:23,884 INFO L175 Difference]: Start difference. First operand has 69 places, 49 transitions, 362 flow. Second operand 8 states and 114 transitions. [2025-02-08 01:12:23,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 66 transitions, 542 flow [2025-02-08 01:12:23,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 66 transitions, 506 flow, removed 14 selfloop flow, removed 3 redundant places. [2025-02-08 01:12:23,886 INFO L231 Difference]: Finished difference. Result has 74 places, 48 transitions, 350 flow [2025-02-08 01:12:23,886 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=350, PETRI_PLACES=74, PETRI_TRANSITIONS=48} [2025-02-08 01:12:23,887 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2025-02-08 01:12:23,887 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 48 transitions, 350 flow [2025-02-08 01:12:23,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 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 01:12:23,887 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:23,887 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] [2025-02-08 01:12:23,895 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-08 01:12:24,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:24,089 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:24,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:24,089 INFO L85 PathProgramCache]: Analyzing trace with hash 900233086, now seen corresponding path program 14 times [2025-02-08 01:12:24,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:24,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280039938] [2025-02-08 01:12:24,089 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:12:24,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:24,092 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:24,097 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:24,097 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:12:24,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:24,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:24,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:24,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280039938] [2025-02-08 01:12:24,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280039938] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:24,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830671578] [2025-02-08 01:12:24,157 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:12:24,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:24,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:24,159 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:12:24,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-08 01:12:24,197 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:24,207 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:24,207 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:12:24,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:24,209 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 01:12:24,209 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:24,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:24,263 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:24,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:24,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830671578] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:12:24,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:12:24,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2025-02-08 01:12:24,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033435859] [2025-02-08 01:12:24,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:12:24,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 01:12:24,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:24,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 01:12:24,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2025-02-08 01:12:24,304 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:24,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 48 transitions, 350 flow. Second operand has 13 states, 13 states have (on average 10.692307692307692) internal successors, (139), 13 states have internal predecessors, (139), 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 01:12:24,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:24,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:24,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:24,433 INFO L124 PetriNetUnfolderBase]: 84/210 cut-off events. [2025-02-08 01:12:24,433 INFO L125 PetriNetUnfolderBase]: For 491/498 co-relation queries the response was YES. [2025-02-08 01:12:24,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 210 events. 84/210 cut-off events. For 491/498 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 818 event pairs, 40 based on Foata normal form. 5/205 useless extension candidates. Maximal degree in co-relation 839. Up to 133 conditions per place. [2025-02-08 01:12:24,435 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 29 selfloop transitions, 14 changer transitions 7/61 dead transitions. [2025-02-08 01:12:24,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 61 transitions, 505 flow [2025-02-08 01:12:24,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:24,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:24,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2025-02-08 01:12:24,436 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2025-02-08 01:12:24,436 INFO L175 Difference]: Start difference. First operand has 74 places, 48 transitions, 350 flow. Second operand 8 states and 110 transitions. [2025-02-08 01:12:24,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 61 transitions, 505 flow [2025-02-08 01:12:24,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 61 transitions, 467 flow, removed 5 selfloop flow, removed 8 redundant places. [2025-02-08 01:12:24,438 INFO L231 Difference]: Finished difference. Result has 72 places, 48 transitions, 353 flow [2025-02-08 01:12:24,438 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=353, PETRI_PLACES=72, PETRI_TRANSITIONS=48} [2025-02-08 01:12:24,438 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 42 predicate places. [2025-02-08 01:12:24,438 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 48 transitions, 353 flow [2025-02-08 01:12:24,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.692307692307692) internal successors, (139), 13 states have internal predecessors, (139), 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 01:12:24,439 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:24,439 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] [2025-02-08 01:12:24,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-08 01:12:24,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:24,643 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:24,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:24,643 INFO L85 PathProgramCache]: Analyzing trace with hash -989410184, now seen corresponding path program 15 times [2025-02-08 01:12:24,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:24,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193905410] [2025-02-08 01:12:24,643 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:12:24,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:24,647 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:24,650 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:24,650 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:12:24,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:24,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:24,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:24,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193905410] [2025-02-08 01:12:24,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193905410] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:24,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466677583] [2025-02-08 01:12:24,733 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:12:24,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:24,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:24,735 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:12:24,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-08 01:12:24,770 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:24,783 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:24,783 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:12:24,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:24,784 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 01:12:24,785 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:24,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:24,836 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:24,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:24,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466677583] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:12:24,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:12:24,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2025-02-08 01:12:24,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40743494] [2025-02-08 01:12:24,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:12:24,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 01:12:24,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:24,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 01:12:24,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2025-02-08 01:12:24,876 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:24,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 48 transitions, 353 flow. Second operand has 12 states, 12 states have (on average 10.833333333333334) internal successors, (130), 12 states have internal predecessors, (130), 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 01:12:24,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:24,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:24,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:25,009 INFO L124 PetriNetUnfolderBase]: 82/211 cut-off events. [2025-02-08 01:12:25,010 INFO L125 PetriNetUnfolderBase]: For 420/427 co-relation queries the response was YES. [2025-02-08 01:12:25,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 860 conditions, 211 events. 82/211 cut-off events. For 420/427 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 841 event pairs, 40 based on Foata normal form. 5/206 useless extension candidates. Maximal degree in co-relation 831. Up to 131 conditions per place. [2025-02-08 01:12:25,012 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 32 selfloop transitions, 11 changer transitions 9/63 dead transitions. [2025-02-08 01:12:25,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 63 transitions, 518 flow [2025-02-08 01:12:25,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:25,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:25,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 111 transitions. [2025-02-08 01:12:25,015 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4625 [2025-02-08 01:12:25,015 INFO L175 Difference]: Start difference. First operand has 72 places, 48 transitions, 353 flow. Second operand 8 states and 111 transitions. [2025-02-08 01:12:25,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 63 transitions, 518 flow [2025-02-08 01:12:25,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 63 transitions, 482 flow, removed 2 selfloop flow, removed 5 redundant places. [2025-02-08 01:12:25,017 INFO L231 Difference]: Finished difference. Result has 75 places, 48 transitions, 348 flow [2025-02-08 01:12:25,017 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=348, PETRI_PLACES=75, PETRI_TRANSITIONS=48} [2025-02-08 01:12:25,018 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2025-02-08 01:12:25,018 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 48 transitions, 348 flow [2025-02-08 01:12:25,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.833333333333334) internal successors, (130), 12 states have internal predecessors, (130), 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 01:12:25,019 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:25,019 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] [2025-02-08 01:12:25,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-02-08 01:12:25,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2025-02-08 01:12:25,219 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:25,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:25,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1529891538, now seen corresponding path program 16 times [2025-02-08 01:12:25,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:25,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168667980] [2025-02-08 01:12:25,220 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:12:25,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:25,222 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:25,224 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:25,225 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:12:25,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:25,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:25,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:25,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168667980] [2025-02-08 01:12:25,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168667980] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:25,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213218664] [2025-02-08 01:12:25,342 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:12:25,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:25,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:25,343 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:12:25,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-08 01:12:25,374 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:25,384 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:25,384 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:12:25,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:25,384 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 01:12:25,386 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:25,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:25,451 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:25,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:25,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213218664] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:12:25,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:12:25,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2025-02-08 01:12:25,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686162326] [2025-02-08 01:12:25,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:12:25,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 01:12:25,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:25,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 01:12:25,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-02-08 01:12:25,503 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:25,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 48 transitions, 348 flow. Second operand has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 13 states have internal predecessors, (140), 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 01:12:25,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:25,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:25,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:25,611 INFO L124 PetriNetUnfolderBase]: 79/206 cut-off events. [2025-02-08 01:12:25,611 INFO L125 PetriNetUnfolderBase]: For 424/431 co-relation queries the response was YES. [2025-02-08 01:12:25,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 845 conditions, 206 events. 79/206 cut-off events. For 424/431 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 818 event pairs, 39 based on Foata normal form. 5/201 useless extension candidates. Maximal degree in co-relation 814. Up to 126 conditions per place. [2025-02-08 01:12:25,613 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 29 selfloop transitions, 13 changer transitions 8/61 dead transitions. [2025-02-08 01:12:25,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 61 transitions, 509 flow [2025-02-08 01:12:25,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:25,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:25,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2025-02-08 01:12:25,614 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2025-02-08 01:12:25,614 INFO L175 Difference]: Start difference. First operand has 75 places, 48 transitions, 348 flow. Second operand 8 states and 110 transitions. [2025-02-08 01:12:25,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 61 transitions, 509 flow [2025-02-08 01:12:25,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 61 transitions, 479 flow, removed 4 selfloop flow, removed 6 redundant places. [2025-02-08 01:12:25,616 INFO L231 Difference]: Finished difference. Result has 76 places, 47 transitions, 353 flow [2025-02-08 01:12:25,616 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=353, PETRI_PLACES=76, PETRI_TRANSITIONS=47} [2025-02-08 01:12:25,616 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2025-02-08 01:12:25,616 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 47 transitions, 353 flow [2025-02-08 01:12:25,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 13 states have internal predecessors, (140), 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 01:12:25,616 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:25,616 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] [2025-02-08 01:12:25,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-08 01:12:25,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:25,817 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:25,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:25,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1607431370, now seen corresponding path program 17 times [2025-02-08 01:12:25,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:25,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586542255] [2025-02-08 01:12:25,818 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:12:25,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:25,821 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:25,822 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:25,823 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:12:25,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:25,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:25,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:25,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586542255] [2025-02-08 01:12:25,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586542255] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:25,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416614417] [2025-02-08 01:12:25,875 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:12:25,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:25,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:25,879 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:12:25,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-08 01:12:25,914 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:25,942 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:25,942 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:12:25,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:25,943 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 01:12:25,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:25,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:25,990 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:26,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:26,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416614417] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:12:26,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:12:26,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2025-02-08 01:12:26,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321464385] [2025-02-08 01:12:26,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:12:26,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 01:12:26,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:26,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 01:12:26,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2025-02-08 01:12:26,018 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:26,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 47 transitions, 353 flow. Second operand has 12 states, 12 states have (on average 10.833333333333334) internal successors, (130), 12 states have internal predecessors, (130), 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 01:12:26,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:26,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:26,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:26,129 INFO L124 PetriNetUnfolderBase]: 74/194 cut-off events. [2025-02-08 01:12:26,129 INFO L125 PetriNetUnfolderBase]: For 448/455 co-relation queries the response was YES. [2025-02-08 01:12:26,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 799 conditions, 194 events. 74/194 cut-off events. For 448/455 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 744 event pairs, 39 based on Foata normal form. 5/189 useless extension candidates. Maximal degree in co-relation 768. Up to 124 conditions per place. [2025-02-08 01:12:26,130 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 28 selfloop transitions, 8 changer transitions 10/57 dead transitions. [2025-02-08 01:12:26,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 57 transitions, 474 flow [2025-02-08 01:12:26,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:26,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:26,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2025-02-08 01:12:26,131 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44583333333333336 [2025-02-08 01:12:26,131 INFO L175 Difference]: Start difference. First operand has 76 places, 47 transitions, 353 flow. Second operand 8 states and 107 transitions. [2025-02-08 01:12:26,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 57 transitions, 474 flow [2025-02-08 01:12:26,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 57 transitions, 426 flow, removed 5 selfloop flow, removed 9 redundant places. [2025-02-08 01:12:26,133 INFO L231 Difference]: Finished difference. Result has 73 places, 43 transitions, 294 flow [2025-02-08 01:12:26,133 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=294, PETRI_PLACES=73, PETRI_TRANSITIONS=43} [2025-02-08 01:12:26,133 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2025-02-08 01:12:26,133 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 43 transitions, 294 flow [2025-02-08 01:12:26,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.833333333333334) internal successors, (130), 12 states have internal predecessors, (130), 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 01:12:26,134 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:26,134 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] [2025-02-08 01:12:26,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-08 01:12:26,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:26,336 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:26,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:26,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1924663378, now seen corresponding path program 18 times [2025-02-08 01:12:26,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:26,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914132804] [2025-02-08 01:12:26,336 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:12:26,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:26,342 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:26,346 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:26,346 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-08 01:12:26,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:26,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:26,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:26,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914132804] [2025-02-08 01:12:26,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914132804] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:26,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009711404] [2025-02-08 01:12:26,408 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:12:26,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:26,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:26,412 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:12:26,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-08 01:12:26,454 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:26,468 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:26,468 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-08 01:12:26,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:26,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 01:12:26,470 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:26,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:26,531 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:26,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:26,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009711404] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:12:26,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:12:26,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2025-02-08 01:12:26,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590877276] [2025-02-08 01:12:26,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:12:26,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 01:12:26,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:26,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 01:12:26,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-02-08 01:12:26,583 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:26,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 43 transitions, 294 flow. Second operand has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 13 states have internal predecessors, (140), 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 01:12:26,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:26,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:26,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:26,702 INFO L124 PetriNetUnfolderBase]: 71/188 cut-off events. [2025-02-08 01:12:26,702 INFO L125 PetriNetUnfolderBase]: For 385/392 co-relation queries the response was YES. [2025-02-08 01:12:26,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 738 conditions, 188 events. 71/188 cut-off events. For 385/392 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 731 event pairs, 39 based on Foata normal form. 5/183 useless extension candidates. Maximal degree in co-relation 711. Up to 124 conditions per place. [2025-02-08 01:12:26,703 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 27 selfloop transitions, 10 changer transitions 7/55 dead transitions. [2025-02-08 01:12:26,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 55 transitions, 420 flow [2025-02-08 01:12:26,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:26,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:26,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2025-02-08 01:12:26,703 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45 [2025-02-08 01:12:26,703 INFO L175 Difference]: Start difference. First operand has 73 places, 43 transitions, 294 flow. Second operand 8 states and 108 transitions. [2025-02-08 01:12:26,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 55 transitions, 420 flow [2025-02-08 01:12:26,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 55 transitions, 396 flow, removed 3 selfloop flow, removed 5 redundant places. [2025-02-08 01:12:26,705 INFO L231 Difference]: Finished difference. Result has 70 places, 43 transitions, 297 flow [2025-02-08 01:12:26,705 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=297, PETRI_PLACES=70, PETRI_TRANSITIONS=43} [2025-02-08 01:12:26,705 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2025-02-08 01:12:26,705 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 43 transitions, 297 flow [2025-02-08 01:12:26,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 13 states have internal predecessors, (140), 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 01:12:26,705 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:26,705 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] [2025-02-08 01:12:26,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-02-08 01:12:26,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-02-08 01:12:26,906 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:26,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:26,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1066950016, now seen corresponding path program 19 times [2025-02-08 01:12:26,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:26,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137277321] [2025-02-08 01:12:26,907 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:12:26,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:26,909 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 01:12:26,911 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:26,911 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:12:26,911 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:26,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:26,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:26,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137277321] [2025-02-08 01:12:26,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137277321] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:26,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454406529] [2025-02-08 01:12:26,963 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:12:26,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:26,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:26,967 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:12:26,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-08 01:12:26,999 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 01:12:27,008 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:27,008 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:12:27,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:27,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 01:12:27,009 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:27,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:27,073 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:27,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:27,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454406529] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:12:27,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:12:27,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2025-02-08 01:12:27,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890421610] [2025-02-08 01:12:27,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:12:27,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 01:12:27,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:27,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 01:12:27,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-02-08 01:12:27,104 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:27,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 43 transitions, 297 flow. Second operand has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 13 states have internal predecessors, (140), 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 01:12:27,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:27,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:27,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:27,233 INFO L124 PetriNetUnfolderBase]: 67/181 cut-off events. [2025-02-08 01:12:27,233 INFO L125 PetriNetUnfolderBase]: For 367/374 co-relation queries the response was YES. [2025-02-08 01:12:27,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 706 conditions, 181 events. 67/181 cut-off events. For 367/374 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 688 event pairs, 38 based on Foata normal form. 5/176 useless extension candidates. Maximal degree in co-relation 679. Up to 119 conditions per place. [2025-02-08 01:12:27,234 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 25 selfloop transitions, 7 changer transitions 9/52 dead transitions. [2025-02-08 01:12:27,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 52 transitions, 400 flow [2025-02-08 01:12:27,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:27,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:27,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2025-02-08 01:12:27,235 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2025-02-08 01:12:27,235 INFO L175 Difference]: Start difference. First operand has 70 places, 43 transitions, 297 flow. Second operand 8 states and 106 transitions. [2025-02-08 01:12:27,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 52 transitions, 400 flow [2025-02-08 01:12:27,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 52 transitions, 380 flow, removed 1 selfloop flow, removed 5 redundant places. [2025-02-08 01:12:27,236 INFO L231 Difference]: Finished difference. Result has 71 places, 39 transitions, 258 flow [2025-02-08 01:12:27,237 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=258, PETRI_PLACES=71, PETRI_TRANSITIONS=39} [2025-02-08 01:12:27,237 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2025-02-08 01:12:27,237 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 39 transitions, 258 flow [2025-02-08 01:12:27,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 13 states have internal predecessors, (140), 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 01:12:27,237 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:27,237 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] [2025-02-08 01:12:27,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-08 01:12:27,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-02-08 01:12:27,442 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:27,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:27,442 INFO L85 PathProgramCache]: Analyzing trace with hash -37051268, now seen corresponding path program 20 times [2025-02-08 01:12:27,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:27,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050020032] [2025-02-08 01:12:27,443 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:12:27,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:27,446 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:27,454 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:27,454 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:12:27,454 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:27,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:27,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:27,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050020032] [2025-02-08 01:12:27,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050020032] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:27,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642484349] [2025-02-08 01:12:27,514 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:12:27,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:27,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:27,516 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:12:27,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-08 01:12:27,550 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:27,559 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:27,559 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:12:27,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:27,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 01:12:27,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:27,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:27,607 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:27,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:27,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642484349] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:12:27,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:12:27,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2025-02-08 01:12:27,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627298399] [2025-02-08 01:12:27,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:12:27,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 01:12:27,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:27,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 01:12:27,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2025-02-08 01:12:27,639 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:27,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 39 transitions, 258 flow. Second operand has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 13 states have internal predecessors, (140), 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 01:12:27,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:27,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:27,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:27,738 INFO L124 PetriNetUnfolderBase]: 63/165 cut-off events. [2025-02-08 01:12:27,738 INFO L125 PetriNetUnfolderBase]: For 344/351 co-relation queries the response was YES. [2025-02-08 01:12:27,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 640 conditions, 165 events. 63/165 cut-off events. For 344/351 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 607 event pairs, 37 based on Foata normal form. 5/160 useless extension candidates. Maximal degree in co-relation 617. Up to 112 conditions per place. [2025-02-08 01:12:27,739 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 21 selfloop transitions, 2 changer transitions 15/48 dead transitions. [2025-02-08 01:12:27,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 48 transitions, 353 flow [2025-02-08 01:12:27,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:27,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:27,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2025-02-08 01:12:27,740 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2025-02-08 01:12:27,740 INFO L175 Difference]: Start difference. First operand has 71 places, 39 transitions, 258 flow. Second operand 8 states and 104 transitions. [2025-02-08 01:12:27,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 48 transitions, 353 flow [2025-02-08 01:12:27,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 48 transitions, 325 flow, removed 3 selfloop flow, removed 9 redundant places. [2025-02-08 01:12:27,744 INFO L231 Difference]: Finished difference. Result has 65 places, 32 transitions, 187 flow [2025-02-08 01:12:27,744 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=187, PETRI_PLACES=65, PETRI_TRANSITIONS=32} [2025-02-08 01:12:27,744 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2025-02-08 01:12:27,744 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 32 transitions, 187 flow [2025-02-08 01:12:27,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 13 states have internal predecessors, (140), 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 01:12:27,744 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:27,745 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] [2025-02-08 01:12:27,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-02-08 01:12:27,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:27,945 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:27,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:27,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1526122795, now seen corresponding path program 2 times [2025-02-08 01:12:27,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:27,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996503387] [2025-02-08 01:12:27,946 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:12:27,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:27,950 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:27,953 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:27,953 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:12:27,953 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:28,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:28,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:28,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996503387] [2025-02-08 01:12:28,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996503387] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:28,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082202172] [2025-02-08 01:12:28,009 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:12:28,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:28,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:28,011 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:12:28,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-08 01:12:28,041 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:28,050 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:28,050 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:12:28,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:28,051 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 01:12:28,052 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:28,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:28,105 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:28,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:28,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082202172] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:12:28,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:12:28,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2025-02-08 01:12:28,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280681606] [2025-02-08 01:12:28,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:12:28,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 01:12:28,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:28,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 01:12:28,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-02-08 01:12:28,139 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:28,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 32 transitions, 187 flow. Second operand has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 13 states have internal predecessors, (140), 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 01:12:28,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:28,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:28,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:28,245 INFO L124 PetriNetUnfolderBase]: 74/180 cut-off events. [2025-02-08 01:12:28,245 INFO L125 PetriNetUnfolderBase]: For 290/298 co-relation queries the response was YES. [2025-02-08 01:12:28,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 629 conditions, 180 events. 74/180 cut-off events. For 290/298 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 653 event pairs, 22 based on Foata normal form. 6/177 useless extension candidates. Maximal degree in co-relation 608. Up to 77 conditions per place. [2025-02-08 01:12:28,246 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 27 selfloop transitions, 12 changer transitions 7/56 dead transitions. [2025-02-08 01:12:28,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 56 transitions, 368 flow [2025-02-08 01:12:28,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:28,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:28,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2025-02-08 01:12:28,247 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4708333333333333 [2025-02-08 01:12:28,247 INFO L175 Difference]: Start difference. First operand has 65 places, 32 transitions, 187 flow. Second operand 8 states and 113 transitions. [2025-02-08 01:12:28,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 56 transitions, 368 flow [2025-02-08 01:12:28,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 56 transitions, 346 flow, removed 5 selfloop flow, removed 7 redundant places. [2025-02-08 01:12:28,248 INFO L231 Difference]: Finished difference. Result has 60 places, 38 transitions, 246 flow [2025-02-08 01:12:28,248 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=246, PETRI_PLACES=60, PETRI_TRANSITIONS=38} [2025-02-08 01:12:28,249 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 30 predicate places. [2025-02-08 01:12:28,249 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 38 transitions, 246 flow [2025-02-08 01:12:28,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 13 states have internal predecessors, (140), 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 01:12:28,249 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:28,249 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] [2025-02-08 01:12:28,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-02-08 01:12:28,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:28,450 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:28,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:28,450 INFO L85 PathProgramCache]: Analyzing trace with hash -58325539, now seen corresponding path program 3 times [2025-02-08 01:12:28,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:28,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660160499] [2025-02-08 01:12:28,450 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:12:28,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:28,455 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:28,459 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:28,460 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:12:28,460 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:28,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:28,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:28,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660160499] [2025-02-08 01:12:28,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660160499] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:28,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850000808] [2025-02-08 01:12:28,534 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:12:28,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:28,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:28,541 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:12:28,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-08 01:12:28,577 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:28,586 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:28,586 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:12:28,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:28,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 01:12:28,587 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:28,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:28,646 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:28,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:28,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850000808] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:12:28,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:12:28,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2025-02-08 01:12:28,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558255500] [2025-02-08 01:12:28,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:12:28,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 01:12:28,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:28,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 01:12:28,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2025-02-08 01:12:28,683 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:28,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 38 transitions, 246 flow. Second operand has 12 states, 12 states have (on average 10.833333333333334) internal successors, (130), 12 states have internal predecessors, (130), 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 01:12:28,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:28,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:28,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:28,809 INFO L124 PetriNetUnfolderBase]: 75/187 cut-off events. [2025-02-08 01:12:28,809 INFO L125 PetriNetUnfolderBase]: For 439/450 co-relation queries the response was YES. [2025-02-08 01:12:28,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 187 events. 75/187 cut-off events. For 439/450 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 710 event pairs, 23 based on Foata normal form. 7/187 useless extension candidates. Maximal degree in co-relation 721. Up to 84 conditions per place. [2025-02-08 01:12:28,810 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 33 selfloop transitions, 12 changer transitions 7/62 dead transitions. [2025-02-08 01:12:28,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 464 flow [2025-02-08 01:12:28,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:28,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:28,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 114 transitions. [2025-02-08 01:12:28,811 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.475 [2025-02-08 01:12:28,811 INFO L175 Difference]: Start difference. First operand has 60 places, 38 transitions, 246 flow. Second operand 8 states and 114 transitions. [2025-02-08 01:12:28,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 464 flow [2025-02-08 01:12:28,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 62 transitions, 429 flow, removed 12 selfloop flow, removed 4 redundant places. [2025-02-08 01:12:28,813 INFO L231 Difference]: Finished difference. Result has 66 places, 41 transitions, 289 flow [2025-02-08 01:12:28,813 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=289, PETRI_PLACES=66, PETRI_TRANSITIONS=41} [2025-02-08 01:12:28,813 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 36 predicate places. [2025-02-08 01:12:28,813 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 41 transitions, 289 flow [2025-02-08 01:12:28,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.833333333333334) internal successors, (130), 12 states have internal predecessors, (130), 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 01:12:28,813 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:28,813 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] [2025-02-08 01:12:28,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-08 01:12:29,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-02-08 01:12:29,018 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:29,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:29,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1901498271, now seen corresponding path program 4 times [2025-02-08 01:12:29,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:29,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531386546] [2025-02-08 01:12:29,019 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:12:29,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:29,023 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:29,025 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:29,025 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:12:29,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:29,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:29,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:29,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531386546] [2025-02-08 01:12:29,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531386546] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:29,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744115912] [2025-02-08 01:12:29,089 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:12:29,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:29,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:29,094 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:12:29,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-08 01:12:29,122 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:29,131 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:29,131 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:12:29,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:29,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 01:12:29,132 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:29,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:29,173 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:29,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:29,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744115912] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:12:29,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:12:29,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2025-02-08 01:12:29,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070738625] [2025-02-08 01:12:29,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:12:29,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 01:12:29,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:29,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 01:12:29,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2025-02-08 01:12:29,205 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:29,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 41 transitions, 289 flow. Second operand has 12 states, 12 states have (on average 10.833333333333334) internal successors, (130), 12 states have internal predecessors, (130), 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 01:12:29,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:29,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:29,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:29,331 INFO L124 PetriNetUnfolderBase]: 70/179 cut-off events. [2025-02-08 01:12:29,331 INFO L125 PetriNetUnfolderBase]: For 483/502 co-relation queries the response was YES. [2025-02-08 01:12:29,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 777 conditions, 179 events. 70/179 cut-off events. For 483/502 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 680 event pairs, 24 based on Foata normal form. 11/183 useless extension candidates. Maximal degree in co-relation 753. Up to 85 conditions per place. [2025-02-08 01:12:29,332 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 31 selfloop transitions, 11 changer transitions 8/60 dead transitions. [2025-02-08 01:12:29,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 60 transitions, 475 flow [2025-02-08 01:12:29,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:29,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:29,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2025-02-08 01:12:29,333 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2025-02-08 01:12:29,333 INFO L175 Difference]: Start difference. First operand has 66 places, 41 transitions, 289 flow. Second operand 8 states and 112 transitions. [2025-02-08 01:12:29,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 60 transitions, 475 flow [2025-02-08 01:12:29,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 60 transitions, 448 flow, removed 4 selfloop flow, removed 5 redundant places. [2025-02-08 01:12:29,334 INFO L231 Difference]: Finished difference. Result has 68 places, 40 transitions, 285 flow [2025-02-08 01:12:29,334 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=285, PETRI_PLACES=68, PETRI_TRANSITIONS=40} [2025-02-08 01:12:29,335 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 38 predicate places. [2025-02-08 01:12:29,335 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 40 transitions, 285 flow [2025-02-08 01:12:29,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.833333333333334) internal successors, (130), 12 states have internal predecessors, (130), 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 01:12:29,335 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:29,335 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] [2025-02-08 01:12:29,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-02-08 01:12:29,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:29,539 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:29,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:29,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1869883913, now seen corresponding path program 5 times [2025-02-08 01:12:29,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:29,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119293217] [2025-02-08 01:12:29,539 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:12:29,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:29,542 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:29,543 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:29,543 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:12:29,543 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:29,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:29,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:29,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119293217] [2025-02-08 01:12:29,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119293217] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:29,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939149949] [2025-02-08 01:12:29,620 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:12:29,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:29,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:29,621 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:12:29,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-08 01:12:29,651 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:29,660 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:29,660 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:12:29,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:29,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 01:12:29,661 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:29,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:29,726 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:29,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:29,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939149949] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:12:29,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:12:29,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2025-02-08 01:12:29,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034232731] [2025-02-08 01:12:29,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:12:29,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 01:12:29,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:29,782 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 01:12:29,782 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2025-02-08 01:12:29,786 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:29,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 40 transitions, 285 flow. Second operand has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 13 states have internal predecessors, (140), 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 01:12:29,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:29,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:29,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:29,923 INFO L124 PetriNetUnfolderBase]: 68/177 cut-off events. [2025-02-08 01:12:29,923 INFO L125 PetriNetUnfolderBase]: For 546/563 co-relation queries the response was YES. [2025-02-08 01:12:29,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 781 conditions, 177 events. 68/177 cut-off events. For 546/563 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 677 event pairs, 23 based on Foata normal form. 6/176 useless extension candidates. Maximal degree in co-relation 757. Up to 83 conditions per place. [2025-02-08 01:12:29,924 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 27 selfloop transitions, 13 changer transitions 8/58 dead transitions. [2025-02-08 01:12:29,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 58 transitions, 480 flow [2025-02-08 01:12:29,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:29,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:29,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2025-02-08 01:12:29,925 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2025-02-08 01:12:29,925 INFO L175 Difference]: Start difference. First operand has 68 places, 40 transitions, 285 flow. Second operand 8 states and 110 transitions. [2025-02-08 01:12:29,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 58 transitions, 480 flow [2025-02-08 01:12:29,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 58 transitions, 434 flow, removed 8 selfloop flow, removed 6 redundant places. [2025-02-08 01:12:29,927 INFO L231 Difference]: Finished difference. Result has 69 places, 41 transitions, 298 flow [2025-02-08 01:12:29,927 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=298, PETRI_PLACES=69, PETRI_TRANSITIONS=41} [2025-02-08 01:12:29,927 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2025-02-08 01:12:29,927 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 41 transitions, 298 flow [2025-02-08 01:12:29,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 13 states have internal predecessors, (140), 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 01:12:29,927 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:29,927 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] [2025-02-08 01:12:29,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-02-08 01:12:30,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:30,130 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:30,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:30,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1088827029, now seen corresponding path program 6 times [2025-02-08 01:12:30,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:30,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161655996] [2025-02-08 01:12:30,130 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:12:30,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:30,134 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:30,138 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:30,138 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-08 01:12:30,139 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:30,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:30,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:30,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161655996] [2025-02-08 01:12:30,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161655996] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:30,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304936755] [2025-02-08 01:12:30,201 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:12:30,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:30,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:30,205 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:12:30,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-08 01:12:30,235 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:30,244 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:30,244 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-08 01:12:30,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:30,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 01:12:30,246 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:30,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:30,289 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:30,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:30,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304936755] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:12:30,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:12:30,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2025-02-08 01:12:30,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918343479] [2025-02-08 01:12:30,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:12:30,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 01:12:30,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:30,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 01:12:30,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2025-02-08 01:12:30,321 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:30,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 41 transitions, 298 flow. Second operand has 12 states, 12 states have (on average 10.833333333333334) internal successors, (130), 12 states have internal predecessors, (130), 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 01:12:30,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:30,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:30,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:30,443 INFO L124 PetriNetUnfolderBase]: 64/168 cut-off events. [2025-02-08 01:12:30,443 INFO L125 PetriNetUnfolderBase]: For 572/589 co-relation queries the response was YES. [2025-02-08 01:12:30,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 168 events. 64/168 cut-off events. For 572/589 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 617 event pairs, 23 based on Foata normal form. 11/172 useless extension candidates. Maximal degree in co-relation 718. Up to 79 conditions per place. [2025-02-08 01:12:30,444 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 28 selfloop transitions, 9 changer transitions 12/59 dead transitions. [2025-02-08 01:12:30,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 59 transitions, 485 flow [2025-02-08 01:12:30,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:30,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:30,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2025-02-08 01:12:30,445 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45416666666666666 [2025-02-08 01:12:30,445 INFO L175 Difference]: Start difference. First operand has 69 places, 41 transitions, 298 flow. Second operand 8 states and 109 transitions. [2025-02-08 01:12:30,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 59 transitions, 485 flow [2025-02-08 01:12:30,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 59 transitions, 436 flow, removed 12 selfloop flow, removed 5 redundant places. [2025-02-08 01:12:30,447 INFO L231 Difference]: Finished difference. Result has 70 places, 38 transitions, 252 flow [2025-02-08 01:12:30,447 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=252, PETRI_PLACES=70, PETRI_TRANSITIONS=38} [2025-02-08 01:12:30,447 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2025-02-08 01:12:30,448 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 38 transitions, 252 flow [2025-02-08 01:12:30,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.833333333333334) internal successors, (130), 12 states have internal predecessors, (130), 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 01:12:30,448 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:30,448 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] [2025-02-08 01:12:30,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-02-08 01:12:30,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2025-02-08 01:12:30,649 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:30,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:30,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1208477927, now seen corresponding path program 7 times [2025-02-08 01:12:30,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:30,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336914888] [2025-02-08 01:12:30,650 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:12:30,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:30,652 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 01:12:30,653 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:30,653 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:12:30,653 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:30,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:30,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:30,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336914888] [2025-02-08 01:12:30,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336914888] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:30,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843899024] [2025-02-08 01:12:30,704 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:12:30,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:30,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:30,710 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:12:30,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-02-08 01:12:30,739 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 01:12:30,749 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:30,749 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:12:30,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:30,750 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 01:12:30,750 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:30,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:30,803 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:30,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:30,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843899024] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:12:30,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:12:30,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2025-02-08 01:12:30,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769434841] [2025-02-08 01:12:30,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:12:30,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 01:12:30,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:30,828 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 01:12:30,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2025-02-08 01:12:30,835 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:30,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 38 transitions, 252 flow. Second operand has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 13 states have internal predecessors, (140), 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 01:12:30,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:30,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:30,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:30,940 INFO L124 PetriNetUnfolderBase]: 64/167 cut-off events. [2025-02-08 01:12:30,940 INFO L125 PetriNetUnfolderBase]: For 391/404 co-relation queries the response was YES. [2025-02-08 01:12:30,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 690 conditions, 167 events. 64/167 cut-off events. For 391/404 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 595 event pairs, 23 based on Foata normal form. 6/166 useless extension candidates. Maximal degree in co-relation 667. Up to 79 conditions per place. [2025-02-08 01:12:30,941 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 26 selfloop transitions, 12 changer transitions 7/55 dead transitions. [2025-02-08 01:12:30,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 55 transitions, 418 flow [2025-02-08 01:12:30,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:30,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:30,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2025-02-08 01:12:30,942 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2025-02-08 01:12:30,942 INFO L175 Difference]: Start difference. First operand has 70 places, 38 transitions, 252 flow. Second operand 8 states and 110 transitions. [2025-02-08 01:12:30,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 55 transitions, 418 flow [2025-02-08 01:12:30,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 55 transitions, 392 flow, removed 2 selfloop flow, removed 5 redundant places. [2025-02-08 01:12:30,944 INFO L231 Difference]: Finished difference. Result has 69 places, 40 transitions, 279 flow [2025-02-08 01:12:30,944 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=279, PETRI_PLACES=69, PETRI_TRANSITIONS=40} [2025-02-08 01:12:30,944 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2025-02-08 01:12:30,944 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 40 transitions, 279 flow [2025-02-08 01:12:30,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 13 states have internal predecessors, (140), 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 01:12:30,944 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:30,944 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] [2025-02-08 01:12:30,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-02-08 01:12:31,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2025-02-08 01:12:31,145 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:31,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:31,146 INFO L85 PathProgramCache]: Analyzing trace with hash -391414091, now seen corresponding path program 8 times [2025-02-08 01:12:31,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:31,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753005730] [2025-02-08 01:12:31,146 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:12:31,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:31,149 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:31,152 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:31,153 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:12:31,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:31,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:31,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:31,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753005730] [2025-02-08 01:12:31,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753005730] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:31,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671674661] [2025-02-08 01:12:31,233 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:12:31,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:31,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:31,235 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:12:31,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-02-08 01:12:31,279 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:31,294 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:31,294 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:12:31,294 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:31,295 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 01:12:31,296 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:31,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:31,370 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:31,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:31,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671674661] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:12:31,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:12:31,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2025-02-08 01:12:31,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183596426] [2025-02-08 01:12:31,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:12:31,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 01:12:31,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:31,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 01:12:31,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-02-08 01:12:31,405 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:31,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 40 transitions, 279 flow. Second operand has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 13 states have internal predecessors, (140), 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 01:12:31,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:31,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:31,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:31,511 INFO L124 PetriNetUnfolderBase]: 60/160 cut-off events. [2025-02-08 01:12:31,511 INFO L125 PetriNetUnfolderBase]: For 398/411 co-relation queries the response was YES. [2025-02-08 01:12:31,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 667 conditions, 160 events. 60/160 cut-off events. For 398/411 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 573 event pairs, 21 based on Foata normal form. 6/159 useless extension candidates. Maximal degree in co-relation 643. Up to 72 conditions per place. [2025-02-08 01:12:31,512 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 25 selfloop transitions, 12 changer transitions 7/54 dead transitions. [2025-02-08 01:12:31,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 54 transitions, 417 flow [2025-02-08 01:12:31,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:31,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:31,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2025-02-08 01:12:31,513 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45416666666666666 [2025-02-08 01:12:31,513 INFO L175 Difference]: Start difference. First operand has 69 places, 40 transitions, 279 flow. Second operand 8 states and 109 transitions. [2025-02-08 01:12:31,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 54 transitions, 417 flow [2025-02-08 01:12:31,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 54 transitions, 389 flow, removed 2 selfloop flow, removed 6 redundant places. [2025-02-08 01:12:31,514 INFO L231 Difference]: Finished difference. Result has 70 places, 39 transitions, 275 flow [2025-02-08 01:12:31,514 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=275, PETRI_PLACES=70, PETRI_TRANSITIONS=39} [2025-02-08 01:12:31,514 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2025-02-08 01:12:31,514 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 39 transitions, 275 flow [2025-02-08 01:12:31,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 13 states have internal predecessors, (140), 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 01:12:31,515 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:31,515 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] [2025-02-08 01:12:31,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-02-08 01:12:31,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:31,715 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:31,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:31,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1374343901, now seen corresponding path program 9 times [2025-02-08 01:12:31,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:31,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205947115] [2025-02-08 01:12:31,716 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:12:31,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:31,719 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:31,722 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:31,722 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:12:31,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:31,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:31,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:31,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205947115] [2025-02-08 01:12:31,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205947115] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:31,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841081669] [2025-02-08 01:12:31,775 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:12:31,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:31,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:31,777 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:12:31,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-02-08 01:12:31,819 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:31,828 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:31,828 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:12:31,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:31,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 01:12:31,830 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:31,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:31,885 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:31,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:31,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841081669] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:12:31,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:12:31,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2025-02-08 01:12:31,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667929854] [2025-02-08 01:12:31,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:12:31,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 01:12:31,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:31,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 01:12:31,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-02-08 01:12:31,924 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:31,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 39 transitions, 275 flow. Second operand has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 13 states have internal predecessors, (140), 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 01:12:31,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:31,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:31,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:32,036 INFO L124 PetriNetUnfolderBase]: 57/156 cut-off events. [2025-02-08 01:12:32,037 INFO L125 PetriNetUnfolderBase]: For 388/401 co-relation queries the response was YES. [2025-02-08 01:12:32,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 655 conditions, 156 events. 57/156 cut-off events. For 388/401 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 559 event pairs, 21 based on Foata normal form. 6/155 useless extension candidates. Maximal degree in co-relation 631. Up to 72 conditions per place. [2025-02-08 01:12:32,037 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 24 selfloop transitions, 9 changer transitions 9/52 dead transitions. [2025-02-08 01:12:32,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 52 transitions, 407 flow [2025-02-08 01:12:32,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:32,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:32,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2025-02-08 01:12:32,038 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44583333333333336 [2025-02-08 01:12:32,038 INFO L175 Difference]: Start difference. First operand has 70 places, 39 transitions, 275 flow. Second operand 8 states and 107 transitions. [2025-02-08 01:12:32,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 52 transitions, 407 flow [2025-02-08 01:12:32,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 52 transitions, 379 flow, removed 2 selfloop flow, removed 6 redundant places. [2025-02-08 01:12:32,040 INFO L231 Difference]: Finished difference. Result has 69 places, 36 transitions, 241 flow [2025-02-08 01:12:32,040 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=241, PETRI_PLACES=69, PETRI_TRANSITIONS=36} [2025-02-08 01:12:32,041 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2025-02-08 01:12:32,041 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 36 transitions, 241 flow [2025-02-08 01:12:32,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 13 states have internal predecessors, (140), 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 01:12:32,041 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:32,041 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] [2025-02-08 01:12:32,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-02-08 01:12:32,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2025-02-08 01:12:32,245 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:32,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:32,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1033011285, now seen corresponding path program 10 times [2025-02-08 01:12:32,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:32,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525974762] [2025-02-08 01:12:32,246 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:12:32,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:32,249 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:32,251 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:32,251 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:12:32,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:32,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:32,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:32,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525974762] [2025-02-08 01:12:32,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525974762] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:32,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585189545] [2025-02-08 01:12:32,320 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:12:32,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:32,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:32,322 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:12:32,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-02-08 01:12:32,353 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:32,362 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:32,362 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:12:32,362 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:32,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 01:12:32,364 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:32,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:32,424 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:32,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:32,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585189545] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:12:32,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:12:32,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2025-02-08 01:12:32,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811868548] [2025-02-08 01:12:32,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:12:32,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 01:12:32,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:32,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 01:12:32,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2025-02-08 01:12:32,472 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:32,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 36 transitions, 241 flow. Second operand has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 13 states have internal predecessors, (140), 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 01:12:32,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:32,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:32,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:32,587 INFO L124 PetriNetUnfolderBase]: 52/145 cut-off events. [2025-02-08 01:12:32,588 INFO L125 PetriNetUnfolderBase]: For 383/396 co-relation queries the response was YES. [2025-02-08 01:12:32,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 595 conditions, 145 events. 52/145 cut-off events. For 383/396 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 501 event pairs, 22 based on Foata normal form. 6/144 useless extension candidates. Maximal degree in co-relation 572. Up to 70 conditions per place. [2025-02-08 01:12:32,589 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 19 selfloop transitions, 3 changer transitions 17/48 dead transitions. [2025-02-08 01:12:32,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 48 transitions, 356 flow [2025-02-08 01:12:32,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:32,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:32,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2025-02-08 01:12:32,589 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4375 [2025-02-08 01:12:32,589 INFO L175 Difference]: Start difference. First operand has 69 places, 36 transitions, 241 flow. Second operand 8 states and 105 transitions. [2025-02-08 01:12:32,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 48 transitions, 356 flow [2025-02-08 01:12:32,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 48 transitions, 326 flow, removed 2 selfloop flow, removed 9 redundant places. [2025-02-08 01:12:32,591 INFO L231 Difference]: Finished difference. Result has 64 places, 28 transitions, 157 flow [2025-02-08 01:12:32,591 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=157, PETRI_PLACES=64, PETRI_TRANSITIONS=28} [2025-02-08 01:12:32,592 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 34 predicate places. [2025-02-08 01:12:32,592 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 28 transitions, 157 flow [2025-02-08 01:12:32,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 13 states have internal predecessors, (140), 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 01:12:32,592 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:32,592 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] [2025-02-08 01:12:32,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2025-02-08 01:12:32,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2025-02-08 01:12:32,793 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:32,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:32,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1191752299, now seen corresponding path program 11 times [2025-02-08 01:12:32,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:32,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757268049] [2025-02-08 01:12:32,793 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:12:32,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:32,797 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:32,799 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:32,799 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:12:32,799 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:32,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:32,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:32,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757268049] [2025-02-08 01:12:32,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757268049] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:32,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053390732] [2025-02-08 01:12:32,858 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:12:32,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:32,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:32,860 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:12:32,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-02-08 01:12:32,890 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:32,899 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:32,899 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:12:32,899 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:32,900 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 01:12:32,900 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:32,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:32,955 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:32,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:32,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053390732] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:12:32,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:12:32,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2025-02-08 01:12:32,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711807494] [2025-02-08 01:12:32,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:12:32,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-08 01:12:32,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:32,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-08 01:12:32,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2025-02-08 01:12:32,987 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:32,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 28 transitions, 157 flow. Second operand has 14 states, 14 states have (on average 10.714285714285714) internal successors, (150), 14 states have internal predecessors, (150), 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 01:12:32,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:32,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:32,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:33,107 INFO L124 PetriNetUnfolderBase]: 43/118 cut-off events. [2025-02-08 01:12:33,108 INFO L125 PetriNetUnfolderBase]: For 279/281 co-relation queries the response was YES. [2025-02-08 01:12:33,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 118 events. 43/118 cut-off events. For 279/281 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 359 event pairs, 11 based on Foata normal form. 3/117 useless extension candidates. Maximal degree in co-relation 443. Up to 53 conditions per place. [2025-02-08 01:12:33,108 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 25 selfloop transitions, 8 changer transitions 7/49 dead transitions. [2025-02-08 01:12:33,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 49 transitions, 339 flow [2025-02-08 01:12:33,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:33,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:33,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2025-02-08 01:12:33,109 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2025-02-08 01:12:33,109 INFO L175 Difference]: Start difference. First operand has 64 places, 28 transitions, 157 flow. Second operand 8 states and 112 transitions. [2025-02-08 01:12:33,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 49 transitions, 339 flow [2025-02-08 01:12:33,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 49 transitions, 290 flow, removed 6 selfloop flow, removed 10 redundant places. [2025-02-08 01:12:33,110 INFO L231 Difference]: Finished difference. Result has 56 places, 32 transitions, 188 flow [2025-02-08 01:12:33,110 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=188, PETRI_PLACES=56, PETRI_TRANSITIONS=32} [2025-02-08 01:12:33,111 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places. [2025-02-08 01:12:33,111 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 32 transitions, 188 flow [2025-02-08 01:12:33,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.714285714285714) internal successors, (150), 14 states have internal predecessors, (150), 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 01:12:33,111 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:33,111 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] [2025-02-08 01:12:33,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-02-08 01:12:33,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2025-02-08 01:12:33,312 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:33,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:33,312 INFO L85 PathProgramCache]: Analyzing trace with hash -270362839, now seen corresponding path program 12 times [2025-02-08 01:12:33,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:33,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923918566] [2025-02-08 01:12:33,312 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:12:33,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:33,318 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:33,321 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:33,321 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-08 01:12:33,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:33,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:33,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:33,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923918566] [2025-02-08 01:12:33,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923918566] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:33,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530149808] [2025-02-08 01:12:33,370 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:12:33,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:33,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:33,373 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:12:33,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-02-08 01:12:33,407 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:33,416 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:33,416 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-08 01:12:33,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:33,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 01:12:33,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:33,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:33,475 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:33,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:33,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530149808] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:12:33,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:12:33,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2025-02-08 01:12:33,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115482317] [2025-02-08 01:12:33,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:12:33,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-08 01:12:33,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:33,503 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-08 01:12:33,503 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2025-02-08 01:12:33,513 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:33,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 32 transitions, 188 flow. Second operand has 14 states, 14 states have (on average 10.714285714285714) internal successors, (150), 14 states have internal predecessors, (150), 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 01:12:33,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:33,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:33,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:33,621 INFO L124 PetriNetUnfolderBase]: 43/119 cut-off events. [2025-02-08 01:12:33,621 INFO L125 PetriNetUnfolderBase]: For 213/215 co-relation queries the response was YES. [2025-02-08 01:12:33,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 486 conditions, 119 events. 43/119 cut-off events. For 213/215 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 344 event pairs, 12 based on Foata normal form. 3/118 useless extension candidates. Maximal degree in co-relation 466. Up to 53 conditions per place. [2025-02-08 01:12:33,622 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 21 selfloop transitions, 14 changer transitions 6/50 dead transitions. [2025-02-08 01:12:33,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 50 transitions, 364 flow [2025-02-08 01:12:33,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:33,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:33,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2025-02-08 01:12:33,622 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45416666666666666 [2025-02-08 01:12:33,622 INFO L175 Difference]: Start difference. First operand has 56 places, 32 transitions, 188 flow. Second operand 8 states and 109 transitions. [2025-02-08 01:12:33,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 50 transitions, 364 flow [2025-02-08 01:12:33,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 50 transitions, 304 flow, removed 15 selfloop flow, removed 6 redundant places. [2025-02-08 01:12:33,623 INFO L231 Difference]: Finished difference. Result has 60 places, 38 transitions, 243 flow [2025-02-08 01:12:33,623 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=243, PETRI_PLACES=60, PETRI_TRANSITIONS=38} [2025-02-08 01:12:33,624 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 30 predicate places. [2025-02-08 01:12:33,624 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 38 transitions, 243 flow [2025-02-08 01:12:33,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.714285714285714) internal successors, (150), 14 states have internal predecessors, (150), 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 01:12:33,624 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:33,624 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] [2025-02-08 01:12:33,635 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-02-08 01:12:33,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2025-02-08 01:12:33,825 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:33,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:33,825 INFO L85 PathProgramCache]: Analyzing trace with hash -2080060767, now seen corresponding path program 13 times [2025-02-08 01:12:33,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:33,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904094422] [2025-02-08 01:12:33,826 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:12:33,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:33,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 01:12:33,833 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:33,833 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:12:33,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:33,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:33,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:33,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904094422] [2025-02-08 01:12:33,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904094422] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:33,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139461637] [2025-02-08 01:12:33,877 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:12:33,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:33,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:33,879 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:12:33,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-02-08 01:12:33,910 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 01:12:33,918 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:33,918 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:12:33,918 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:33,919 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 01:12:33,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:33,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:33,970 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:34,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:34,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139461637] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:12:34,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:12:34,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2025-02-08 01:12:34,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608148690] [2025-02-08 01:12:34,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:12:34,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-08 01:12:34,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:34,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-08 01:12:34,003 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2025-02-08 01:12:34,006 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:34,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 38 transitions, 243 flow. Second operand has 14 states, 14 states have (on average 10.714285714285714) internal successors, (150), 14 states have internal predecessors, (150), 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 01:12:34,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:34,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:34,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:34,116 INFO L124 PetriNetUnfolderBase]: 42/120 cut-off events. [2025-02-08 01:12:34,116 INFO L125 PetriNetUnfolderBase]: For 184/186 co-relation queries the response was YES. [2025-02-08 01:12:34,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 120 events. 42/120 cut-off events. For 184/186 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 364 event pairs, 6 based on Foata normal form. 3/119 useless extension candidates. Maximal degree in co-relation 470. Up to 30 conditions per place. [2025-02-08 01:12:34,117 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 26 selfloop transitions, 9 changer transitions 8/52 dead transitions. [2025-02-08 01:12:34,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 52 transitions, 389 flow [2025-02-08 01:12:34,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:34,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:34,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2025-02-08 01:12:34,117 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45 [2025-02-08 01:12:34,117 INFO L175 Difference]: Start difference. First operand has 60 places, 38 transitions, 243 flow. Second operand 8 states and 108 transitions. [2025-02-08 01:12:34,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 52 transitions, 389 flow [2025-02-08 01:12:34,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 52 transitions, 356 flow, removed 13 selfloop flow, removed 3 redundant places. [2025-02-08 01:12:34,119 INFO L231 Difference]: Finished difference. Result has 65 places, 37 transitions, 230 flow [2025-02-08 01:12:34,119 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=230, PETRI_PLACES=65, PETRI_TRANSITIONS=37} [2025-02-08 01:12:34,119 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2025-02-08 01:12:34,119 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 37 transitions, 230 flow [2025-02-08 01:12:34,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.714285714285714) internal successors, (150), 14 states have internal predecessors, (150), 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 01:12:34,119 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:34,119 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] [2025-02-08 01:12:34,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2025-02-08 01:12:34,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-02-08 01:12:34,320 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:34,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:34,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1281807841, now seen corresponding path program 14 times [2025-02-08 01:12:34,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:34,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103243489] [2025-02-08 01:12:34,321 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:12:34,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:34,326 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:34,329 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:34,329 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:12:34,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:34,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:34,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:34,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103243489] [2025-02-08 01:12:34,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103243489] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:34,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99358733] [2025-02-08 01:12:34,375 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:12:34,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:34,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:34,377 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:12:34,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-02-08 01:12:34,412 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:34,421 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:34,421 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:12:34,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:34,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 01:12:34,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:34,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:34,475 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:34,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:34,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99358733] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:12:34,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:12:34,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2025-02-08 01:12:34,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568942380] [2025-02-08 01:12:34,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:12:34,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-08 01:12:34,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:34,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-08 01:12:34,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2025-02-08 01:12:34,500 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:34,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 37 transitions, 230 flow. Second operand has 14 states, 14 states have (on average 10.642857142857142) internal successors, (149), 14 states have internal predecessors, (149), 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 01:12:34,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:34,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:34,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:34,619 INFO L124 PetriNetUnfolderBase]: 40/117 cut-off events. [2025-02-08 01:12:34,619 INFO L125 PetriNetUnfolderBase]: For 160/160 co-relation queries the response was YES. [2025-02-08 01:12:34,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476 conditions, 117 events. 40/117 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 349 event pairs, 11 based on Foata normal form. 1/114 useless extension candidates. Maximal degree in co-relation 453. Up to 51 conditions per place. [2025-02-08 01:12:34,620 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 21 selfloop transitions, 13 changer transitions 7/50 dead transitions. [2025-02-08 01:12:34,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 50 transitions, 359 flow [2025-02-08 01:12:34,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:34,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:34,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2025-02-08 01:12:34,621 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45416666666666666 [2025-02-08 01:12:34,621 INFO L175 Difference]: Start difference. First operand has 65 places, 37 transitions, 230 flow. Second operand 8 states and 109 transitions. [2025-02-08 01:12:34,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 50 transitions, 359 flow [2025-02-08 01:12:34,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 50 transitions, 319 flow, removed 4 selfloop flow, removed 10 redundant places. [2025-02-08 01:12:34,622 INFO L231 Difference]: Finished difference. Result has 61 places, 37 transitions, 229 flow [2025-02-08 01:12:34,622 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=229, PETRI_PLACES=61, PETRI_TRANSITIONS=37} [2025-02-08 01:12:34,623 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2025-02-08 01:12:34,623 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 37 transitions, 229 flow [2025-02-08 01:12:34,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.642857142857142) internal successors, (149), 14 states have internal predecessors, (149), 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 01:12:34,623 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:34,623 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] [2025-02-08 01:12:34,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2025-02-08 01:12:34,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-02-08 01:12:34,824 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:34,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:34,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1604388321, now seen corresponding path program 15 times [2025-02-08 01:12:34,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:34,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783917543] [2025-02-08 01:12:34,825 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:12:34,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:34,830 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:34,832 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:34,832 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:12:34,832 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:34,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:34,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:34,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783917543] [2025-02-08 01:12:34,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783917543] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:34,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702692529] [2025-02-08 01:12:34,904 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:12:34,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:34,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:34,906 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:12:34,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-02-08 01:12:34,941 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:34,951 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:34,951 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:12:34,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:34,952 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 01:12:34,952 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:35,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:35,004 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:35,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:35,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702692529] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:12:35,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:12:35,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2025-02-08 01:12:35,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863412068] [2025-02-08 01:12:35,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:12:35,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-08 01:12:35,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:35,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-08 01:12:35,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2025-02-08 01:12:35,040 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:35,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 37 transitions, 229 flow. Second operand has 14 states, 14 states have (on average 10.714285714285714) internal successors, (150), 14 states have internal predecessors, (150), 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 01:12:35,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:35,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:35,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:35,172 INFO L124 PetriNetUnfolderBase]: 36/112 cut-off events. [2025-02-08 01:12:35,172 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2025-02-08 01:12:35,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 112 events. 36/112 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 341 event pairs, 11 based on Foata normal form. 1/109 useless extension candidates. Maximal degree in co-relation 434. Up to 49 conditions per place. [2025-02-08 01:12:35,172 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 22 selfloop transitions, 9 changer transitions 10/50 dead transitions. [2025-02-08 01:12:35,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 50 transitions, 363 flow [2025-02-08 01:12:35,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:35,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:35,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2025-02-08 01:12:35,173 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45416666666666666 [2025-02-08 01:12:35,173 INFO L175 Difference]: Start difference. First operand has 61 places, 37 transitions, 229 flow. Second operand 8 states and 109 transitions. [2025-02-08 01:12:35,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 50 transitions, 363 flow [2025-02-08 01:12:35,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 50 transitions, 313 flow, removed 2 selfloop flow, removed 7 redundant places. [2025-02-08 01:12:35,175 INFO L231 Difference]: Finished difference. Result has 61 places, 35 transitions, 191 flow [2025-02-08 01:12:35,175 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=191, PETRI_PLACES=61, PETRI_TRANSITIONS=35} [2025-02-08 01:12:35,175 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2025-02-08 01:12:35,175 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 35 transitions, 191 flow [2025-02-08 01:12:35,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.714285714285714) internal successors, (150), 14 states have internal predecessors, (150), 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 01:12:35,175 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:35,175 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] [2025-02-08 01:12:35,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2025-02-08 01:12:35,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-02-08 01:12:35,380 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:35,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:35,380 INFO L85 PathProgramCache]: Analyzing trace with hash -459849207, now seen corresponding path program 16 times [2025-02-08 01:12:35,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:35,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166135906] [2025-02-08 01:12:35,380 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:12:35,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:35,383 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:35,385 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:35,385 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:12:35,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:35,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:35,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:35,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166135906] [2025-02-08 01:12:35,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166135906] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:35,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312555831] [2025-02-08 01:12:35,446 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:12:35,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:35,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:35,448 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:12:35,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-02-08 01:12:35,479 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:35,488 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:35,489 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:12:35,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:35,489 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 01:12:35,490 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:35,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:35,546 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:35,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:35,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312555831] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:12:35,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:12:35,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2025-02-08 01:12:35,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286058012] [2025-02-08 01:12:35,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:12:35,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-08 01:12:35,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:35,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-08 01:12:35,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2025-02-08 01:12:35,580 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:35,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 35 transitions, 191 flow. Second operand has 14 states, 14 states have (on average 10.714285714285714) internal successors, (150), 14 states have internal predecessors, (150), 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 01:12:35,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:35,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:35,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:35,719 INFO L124 PetriNetUnfolderBase]: 35/113 cut-off events. [2025-02-08 01:12:35,719 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2025-02-08 01:12:35,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426 conditions, 113 events. 35/113 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 350 event pairs, 11 based on Foata normal form. 1/110 useless extension candidates. Maximal degree in co-relation 408. Up to 47 conditions per place. [2025-02-08 01:12:35,720 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 21 selfloop transitions, 12 changer transitions 8/50 dead transitions. [2025-02-08 01:12:35,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 50 transitions, 336 flow [2025-02-08 01:12:35,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:35,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:35,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2025-02-08 01:12:35,721 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45416666666666666 [2025-02-08 01:12:35,721 INFO L175 Difference]: Start difference. First operand has 61 places, 35 transitions, 191 flow. Second operand 8 states and 109 transitions. [2025-02-08 01:12:35,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 50 transitions, 336 flow [2025-02-08 01:12:35,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 50 transitions, 304 flow, removed 6 selfloop flow, removed 7 redundant places. [2025-02-08 01:12:35,722 INFO L231 Difference]: Finished difference. Result has 61 places, 36 transitions, 212 flow [2025-02-08 01:12:35,722 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=212, PETRI_PLACES=61, PETRI_TRANSITIONS=36} [2025-02-08 01:12:35,722 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2025-02-08 01:12:35,722 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 36 transitions, 212 flow [2025-02-08 01:12:35,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.714285714285714) internal successors, (150), 14 states have internal predecessors, (150), 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 01:12:35,722 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:35,722 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] [2025-02-08 01:12:35,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2025-02-08 01:12:35,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,32 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:35,923 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:35,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:35,924 INFO L85 PathProgramCache]: Analyzing trace with hash -992453233, now seen corresponding path program 17 times [2025-02-08 01:12:35,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:35,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434687042] [2025-02-08 01:12:35,924 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:12:35,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:35,927 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:35,928 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:35,928 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:12:35,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:36,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:36,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:36,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434687042] [2025-02-08 01:12:36,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434687042] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:36,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976348508] [2025-02-08 01:12:36,004 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:12:36,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:36,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:36,008 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:12:36,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-02-08 01:12:36,039 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:36,048 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:36,048 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:12:36,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:36,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 01:12:36,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:36,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:36,094 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:36,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:36,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976348508] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:12:36,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:12:36,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2025-02-08 01:12:36,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113234396] [2025-02-08 01:12:36,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:12:36,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-08 01:12:36,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:36,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-08 01:12:36,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2025-02-08 01:12:36,135 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:36,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 36 transitions, 212 flow. Second operand has 14 states, 14 states have (on average 10.714285714285714) internal successors, (150), 14 states have internal predecessors, (150), 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 01:12:36,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:36,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:36,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:36,243 INFO L124 PetriNetUnfolderBase]: 30/101 cut-off events. [2025-02-08 01:12:36,243 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2025-02-08 01:12:36,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 395 conditions, 101 events. 30/101 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 295 event pairs, 10 based on Foata normal form. 1/98 useless extension candidates. Maximal degree in co-relation 376. Up to 42 conditions per place. [2025-02-08 01:12:36,244 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 20 selfloop transitions, 7 changer transitions 10/46 dead transitions. [2025-02-08 01:12:36,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 46 transitions, 315 flow [2025-02-08 01:12:36,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:36,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:36,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2025-02-08 01:12:36,244 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4375 [2025-02-08 01:12:36,244 INFO L175 Difference]: Start difference. First operand has 61 places, 36 transitions, 212 flow. Second operand 8 states and 105 transitions. [2025-02-08 01:12:36,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 46 transitions, 315 flow [2025-02-08 01:12:36,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 46 transitions, 290 flow, removed 5 selfloop flow, removed 5 redundant places. [2025-02-08 01:12:36,245 INFO L231 Difference]: Finished difference. Result has 62 places, 32 transitions, 173 flow [2025-02-08 01:12:36,245 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=173, PETRI_PLACES=62, PETRI_TRANSITIONS=32} [2025-02-08 01:12:36,245 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 32 predicate places. [2025-02-08 01:12:36,245 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 32 transitions, 173 flow [2025-02-08 01:12:36,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.714285714285714) internal successors, (150), 14 states have internal predecessors, (150), 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 01:12:36,246 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:36,246 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] [2025-02-08 01:12:36,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2025-02-08 01:12:36,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2025-02-08 01:12:36,446 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:36,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:36,446 INFO L85 PathProgramCache]: Analyzing trace with hash 2136992347, now seen corresponding path program 18 times [2025-02-08 01:12:36,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:36,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236030239] [2025-02-08 01:12:36,447 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:12:36,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:36,450 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:36,452 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:36,457 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-08 01:12:36,457 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:36,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:36,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:36,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236030239] [2025-02-08 01:12:36,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236030239] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:36,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407477223] [2025-02-08 01:12:36,508 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:12:36,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:36,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:36,511 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:12:36,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-02-08 01:12:36,543 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:36,553 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:36,553 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-08 01:12:36,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:36,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 01:12:36,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:36,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:36,606 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:36,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:36,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407477223] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:12:36,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:12:36,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2025-02-08 01:12:36,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797085646] [2025-02-08 01:12:36,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:12:36,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-08 01:12:36,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:36,631 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-08 01:12:36,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2025-02-08 01:12:36,632 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:36,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 32 transitions, 173 flow. Second operand has 14 states, 14 states have (on average 10.714285714285714) internal successors, (150), 14 states have internal predecessors, (150), 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 01:12:36,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:36,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:36,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:36,731 INFO L124 PetriNetUnfolderBase]: 25/90 cut-off events. [2025-02-08 01:12:36,731 INFO L125 PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES. [2025-02-08 01:12:36,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 90 events. 25/90 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 246 event pairs, 9 based on Foata normal form. 1/87 useless extension candidates. Maximal degree in co-relation 319. Up to 37 conditions per place. [2025-02-08 01:12:36,731 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 18 selfloop transitions, 9 changer transitions 6/42 dead transitions. [2025-02-08 01:12:36,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 42 transitions, 268 flow [2025-02-08 01:12:36,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:36,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:36,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2025-02-08 01:12:36,732 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2025-02-08 01:12:36,732 INFO L175 Difference]: Start difference. First operand has 62 places, 32 transitions, 173 flow. Second operand 8 states and 104 transitions. [2025-02-08 01:12:36,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 42 transitions, 268 flow [2025-02-08 01:12:36,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 42 transitions, 231 flow, removed 3 selfloop flow, removed 10 redundant places. [2025-02-08 01:12:36,733 INFO L231 Difference]: Finished difference. Result has 56 places, 31 transitions, 159 flow [2025-02-08 01:12:36,733 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=159, PETRI_PLACES=56, PETRI_TRANSITIONS=31} [2025-02-08 01:12:36,733 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places. [2025-02-08 01:12:36,733 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 31 transitions, 159 flow [2025-02-08 01:12:36,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.714285714285714) internal successors, (150), 14 states have internal predecessors, (150), 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 01:12:36,733 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:36,733 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] [2025-02-08 01:12:36,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2025-02-08 01:12:36,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,34 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:36,934 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:36,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:36,934 INFO L85 PathProgramCache]: Analyzing trace with hash 315475831, now seen corresponding path program 19 times [2025-02-08 01:12:36,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:36,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514751237] [2025-02-08 01:12:36,934 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:12:36,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:36,937 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 01:12:36,938 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:36,938 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:12:36,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:36,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:36,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:36,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514751237] [2025-02-08 01:12:36,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514751237] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:36,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88437195] [2025-02-08 01:12:36,999 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:12:36,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:36,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:37,001 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:12:37,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-02-08 01:12:37,040 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 01:12:37,050 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:37,050 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:12:37,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:37,050 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 01:12:37,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:37,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:37,102 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:37,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:37,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88437195] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:12:37,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:12:37,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2025-02-08 01:12:37,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422143544] [2025-02-08 01:12:37,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:12:37,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-08 01:12:37,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:37,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-08 01:12:37,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2025-02-08 01:12:37,136 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:37,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 31 transitions, 159 flow. Second operand has 14 states, 14 states have (on average 10.642857142857142) internal successors, (149), 14 states have internal predecessors, (149), 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 01:12:37,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:37,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:37,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:37,214 INFO L124 PetriNetUnfolderBase]: 24/90 cut-off events. [2025-02-08 01:12:37,215 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2025-02-08 01:12:37,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 90 events. 24/90 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 252 event pairs, 9 based on Foata normal form. 1/87 useless extension candidates. Maximal degree in co-relation 300. Up to 37 conditions per place. [2025-02-08 01:12:37,216 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 17 selfloop transitions, 6 changer transitions 10/42 dead transitions. [2025-02-08 01:12:37,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 42 transitions, 256 flow [2025-02-08 01:12:37,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:37,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:37,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2025-02-08 01:12:37,217 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2025-02-08 01:12:37,217 INFO L175 Difference]: Start difference. First operand has 56 places, 31 transitions, 159 flow. Second operand 8 states and 104 transitions. [2025-02-08 01:12:37,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 42 transitions, 256 flow [2025-02-08 01:12:37,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 42 transitions, 236 flow, removed 1 selfloop flow, removed 5 redundant places. [2025-02-08 01:12:37,217 INFO L231 Difference]: Finished difference. Result has 56 places, 28 transitions, 134 flow [2025-02-08 01:12:37,217 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=134, PETRI_PLACES=56, PETRI_TRANSITIONS=28} [2025-02-08 01:12:37,218 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places. [2025-02-08 01:12:37,218 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 28 transitions, 134 flow [2025-02-08 01:12:37,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.642857142857142) internal successors, (149), 14 states have internal predecessors, (149), 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 01:12:37,218 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:37,219 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] [2025-02-08 01:12:37,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2025-02-08 01:12:37,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,35 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:37,423 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:12:37,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:37,424 INFO L85 PathProgramCache]: Analyzing trace with hash 673728359, now seen corresponding path program 20 times [2025-02-08 01:12:37,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:37,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718340238] [2025-02-08 01:12:37,424 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:12:37,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:37,430 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:37,436 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:37,436 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:12:37,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:37,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:37,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:37,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718340238] [2025-02-08 01:12:37,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718340238] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:12:37,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345868011] [2025-02-08 01:12:37,492 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:12:37,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:12:37,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:37,494 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:12:37,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2025-02-08 01:12:37,529 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-08 01:12:37,538 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:12:37,538 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:12:37,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:37,539 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 01:12:37,539 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:12:37,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:37,592 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:12:37,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:12:37,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345868011] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:12:37,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:12:37,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2025-02-08 01:12:37,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919149173] [2025-02-08 01:12:37,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:12:37,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-08 01:12:37,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:37,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-08 01:12:37,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2025-02-08 01:12:37,619 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2025-02-08 01:12:37,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 28 transitions, 134 flow. Second operand has 14 states, 14 states have (on average 10.642857142857142) internal successors, (149), 14 states have internal predecessors, (149), 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 01:12:37,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:37,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2025-02-08 01:12:37,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:37,695 INFO L124 PetriNetUnfolderBase]: 19/72 cut-off events. [2025-02-08 01:12:37,695 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2025-02-08 01:12:37,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 72 events. 19/72 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 186 event pairs, 8 based on Foata normal form. 1/69 useless extension candidates. Maximal degree in co-relation 239. Up to 30 conditions per place. [2025-02-08 01:12:37,696 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2025-02-08 01:12:37,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 33 transitions, 193 flow [2025-02-08 01:12:37,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:12:37,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:12:37,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2025-02-08 01:12:37,696 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2025-02-08 01:12:37,696 INFO L175 Difference]: Start difference. First operand has 56 places, 28 transitions, 134 flow. Second operand 8 states and 98 transitions. [2025-02-08 01:12:37,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 33 transitions, 193 flow [2025-02-08 01:12:37,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 33 transitions, 169 flow, removed 2 selfloop flow, removed 8 redundant places. [2025-02-08 01:12:37,697 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2025-02-08 01:12:37,697 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2025-02-08 01:12:37,697 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2025-02-08 01:12:37,697 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2025-02-08 01:12:37,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.642857142857142) internal successors, (149), 14 states have internal predecessors, (149), 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 01:12:37,699 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-02-08 01:12:37,700 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-02-08 01:12:37,700 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-02-08 01:12:37,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2025-02-08 01:12:37,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2025-02-08 01:12:37,901 INFO L422 BasicCegarLoop]: Path program histogram: [20, 20, 3, 1, 1] [2025-02-08 01:12:37,904 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-08 01:12:37,904 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 01:12:37,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 01:12:37 BasicIcfg [2025-02-08 01:12:37,908 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 01:12:37,908 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 01:12:37,908 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 01:12:37,908 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 01:12:37,909 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:12:15" (3/4) ... [2025-02-08 01:12:37,910 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-08 01:12:37,912 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-02-08 01:12:37,912 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-02-08 01:12:37,916 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 50 nodes and edges [2025-02-08 01:12:37,916 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2025-02-08 01:12:37,916 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2025-02-08 01:12:37,917 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-02-08 01:12:37,971 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-08 01:12:37,972 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-08 01:12:37,972 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 01:12:37,972 INFO L158 Benchmark]: Toolchain (without parser) took 22813.77ms. Allocated memory was 167.8MB in the beginning and 293.6MB in the end (delta: 125.8MB). Free memory was 123.7MB in the beginning and 137.9MB in the end (delta: -14.2MB). Peak memory consumption was 111.3MB. Max. memory is 16.1GB. [2025-02-08 01:12:37,972 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 209.7MB. Free memory is still 129.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 01:12:37,972 INFO L158 Benchmark]: CACSL2BoogieTranslator took 183.78ms. Allocated memory is still 167.8MB. Free memory was 123.7MB in the beginning and 112.1MB in the end (delta: 11.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 01:12:37,973 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.95ms. Allocated memory is still 167.8MB. Free memory was 112.1MB in the beginning and 110.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 01:12:37,973 INFO L158 Benchmark]: Boogie Preprocessor took 32.64ms. Allocated memory is still 167.8MB. Free memory was 110.4MB in the beginning and 108.9MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 01:12:37,973 INFO L158 Benchmark]: IcfgBuilder took 453.34ms. Allocated memory is still 167.8MB. Free memory was 108.9MB in the beginning and 72.6MB in the end (delta: 36.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-02-08 01:12:37,973 INFO L158 Benchmark]: TraceAbstraction took 22044.83ms. Allocated memory was 167.8MB in the beginning and 293.6MB in the end (delta: 125.8MB). Free memory was 71.9MB in the beginning and 146.3MB in the end (delta: -74.3MB). Peak memory consumption was 52.6MB. Max. memory is 16.1GB. [2025-02-08 01:12:37,973 INFO L158 Benchmark]: Witness Printer took 63.80ms. Allocated memory is still 293.6MB. Free memory was 146.3MB in the beginning and 137.9MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 01:12:37,974 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 209.7MB. Free memory is still 129.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 183.78ms. Allocated memory is still 167.8MB. Free memory was 123.7MB in the beginning and 112.1MB in the end (delta: 11.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.95ms. Allocated memory is still 167.8MB. Free memory was 112.1MB in the beginning and 110.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.64ms. Allocated memory is still 167.8MB. Free memory was 110.4MB in the beginning and 108.9MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 453.34ms. Allocated memory is still 167.8MB. Free memory was 108.9MB in the beginning and 72.6MB in the end (delta: 36.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 22044.83ms. Allocated memory was 167.8MB in the beginning and 293.6MB in the end (delta: 125.8MB). Free memory was 71.9MB in the beginning and 146.3MB in the end (delta: -74.3MB). Peak memory consumption was 52.6MB. Max. memory is 16.1GB. * Witness Printer took 63.80ms. Allocated memory is still 293.6MB. Free memory was 146.3MB in the beginning and 137.9MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 72]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 45 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 21.9s, OverallIterations: 45, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1022 SdHoareTripleChecker+Valid, 4.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 967 mSDsluCounter, 378 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 321 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10544 IncrementalHoareTripleChecker+Invalid, 10576 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 57 mSDtfsCounter, 10544 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1801 GetRequests, 1207 SyntacticMatches, 50 SemanticMatches, 544 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1339 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=18, InterpolantAutomatonStates: 345, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 6.5s InterpolantComputationTime, 1583 NumberOfCodeBlocks, 1583 NumberOfCodeBlocksAsserted, 139 NumberOfCheckSat, 2168 ConstructedInterpolants, 0 QuantifiedInterpolants, 9880 SizeOfPredicates, 105 NumberOfNonLiveVariables, 3920 ConjunctsInSsa, 280 ConjunctsInUnsatCore, 115 InterpolantComputations, 10 PerfectInterpolantSequences, 0/135 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-08 01:12:37,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE