./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3855d6da0b439f4c6a497e897f140f408df8c7fd65e3042f0fafae1979048a3d --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:12:55,962 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:12:56,007 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 01:12:56,011 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:12:56,011 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:12:56,032 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:12:56,032 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:12:56,032 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:12:56,032 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:12:56,032 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:12:56,033 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:12:56,033 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:12:56,033 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:12:56,033 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:12:56,033 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:12:56,033 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:12:56,034 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:12:56,034 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 01:12:56,034 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:12:56,034 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 01:12:56,034 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:12:56,034 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:12:56,034 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:12:56,034 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:12:56,034 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 01:12:56,034 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:12:56,034 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:12:56,034 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:12:56,034 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:12:56,034 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:12:56,034 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:12:56,034 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:12:56,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:12:56,035 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:12:56,035 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:12:56,035 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:12:56,035 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:12:56,035 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:12:56,035 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:12:56,035 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:12:56,035 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:12:56,035 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:12:56,035 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:12:56,035 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 -> 3855d6da0b439f4c6a497e897f140f408df8c7fd65e3042f0fafae1979048a3d [2025-02-08 01:12:56,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:12:56,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:12:56,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:12:56,260 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:12:56,260 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:12:56,261 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2025-02-08 01:12:57,385 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5e62a21b4/8c50532be89545aa8350031a0e152d35/FLAG9e78c2930 [2025-02-08 01:12:57,589 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:12:57,590 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2025-02-08 01:12:57,595 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5e62a21b4/8c50532be89545aa8350031a0e152d35/FLAG9e78c2930 [2025-02-08 01:12:57,953 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5e62a21b4/8c50532be89545aa8350031a0e152d35 [2025-02-08 01:12:57,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:12:57,956 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:12:57,957 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:12:57,957 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:12:57,960 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:12:57,961 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:12:57" (1/1) ... [2025-02-08 01:12:57,961 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31f4dc9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:57, skipping insertion in model container [2025-02-08 01:12:57,961 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:12:57" (1/1) ... [2025-02-08 01:12:57,978 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:12:58,097 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-name-comparator-subst.wvr.c[4875,4888] [2025-02-08 01:12:58,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:12:58,110 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:12:58,136 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-name-comparator-subst.wvr.c[4875,4888] [2025-02-08 01:12:58,142 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:12:58,153 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:12:58,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:58 WrapperNode [2025-02-08 01:12:58,154 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:12:58,155 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:12:58,155 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:12:58,155 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:12:58,159 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:58" (1/1) ... [2025-02-08 01:12:58,165 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:58" (1/1) ... [2025-02-08 01:12:58,180 INFO L138 Inliner]: procedures = 25, calls = 29, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 298 [2025-02-08 01:12:58,181 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:12:58,181 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:12:58,181 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:12:58,181 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:12:58,189 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:58" (1/1) ... [2025-02-08 01:12:58,189 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:58" (1/1) ... [2025-02-08 01:12:58,195 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:58" (1/1) ... [2025-02-08 01:12:58,213 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-02-08 01:12:58,213 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:58" (1/1) ... [2025-02-08 01:12:58,213 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:58" (1/1) ... [2025-02-08 01:12:58,221 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:58" (1/1) ... [2025-02-08 01:12:58,221 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:58" (1/1) ... [2025-02-08 01:12:58,222 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:58" (1/1) ... [2025-02-08 01:12:58,223 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:58" (1/1) ... [2025-02-08 01:12:58,225 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:12:58,225 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:12:58,225 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:12:58,225 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:12:58,226 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:58" (1/1) ... [2025-02-08 01:12:58,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:12:58,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:58,251 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 01:12:58,253 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 01:12:58,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:12:58,269 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 01:12:58,270 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 01:12:58,270 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 01:12:58,270 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 01:12:58,270 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 01:12:58,270 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 01:12:58,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:12:58,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 01:12:58,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 01:12:58,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 01:12:58,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 01:12:58,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:12:58,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:12:58,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 01:12:58,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 01:12:58,271 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 01:12:58,354 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:12:58,355 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:12:58,482 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L63-3: #t~ite5#1 := #t~ret4#1; [2025-02-08 01:12:58,482 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L63-4: assume { :end_inline_minus } true;assume -2147483648 <= #t~ret4#1 && #t~ret4#1 <= 2147483647; [2025-02-08 01:12:58,482 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L63-5: havoc minus_#in~a#1, minus_#in~b#1; [2025-02-08 01:12:58,482 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L63-6: havoc minus_~a#1, minus_~b#1; [2025-02-08 01:12:58,482 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L63-7: #t~ret4#1 := minus_#res#1; [2025-02-08 01:12:58,565 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L85-3: #t~ite10#1 := #t~ret9#1; [2025-02-08 01:12:58,566 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L85-4: assume { :end_inline_minus } true;assume -2147483648 <= #t~ret9#1 && #t~ret9#1 <= 2147483647; [2025-02-08 01:12:58,566 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L85-5: havoc minus_#in~a#1, minus_#in~b#1; [2025-02-08 01:12:58,566 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L85-6: havoc minus_~a#1, minus_~b#1; [2025-02-08 01:12:58,566 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L85-7: #t~ret9#1 := minus_#res#1; [2025-02-08 01:12:58,624 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L107-3: #t~ite15#1 := #t~ret14#1; [2025-02-08 01:12:58,624 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L107-4: assume { :end_inline_minus } true;assume -2147483648 <= #t~ret14#1 && #t~ret14#1 <= 2147483647; [2025-02-08 01:12:58,624 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L107-5: havoc minus_#in~a#1, minus_#in~b#1; [2025-02-08 01:12:58,624 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L107-6: havoc minus_~a#1, minus_~b#1; [2025-02-08 01:12:58,624 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L107-7: #t~ret14#1 := minus_#res#1; [2025-02-08 01:12:58,778 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 01:12:58,780 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:12:59,029 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:12:59,029 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:12:59,030 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:12:59 BoogieIcfgContainer [2025-02-08 01:12:59,030 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:12:59,032 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:12:59,033 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:12:59,036 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:12:59,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:12:57" (1/3) ... [2025-02-08 01:12:59,036 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f450859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:12:59, skipping insertion in model container [2025-02-08 01:12:59,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:58" (2/3) ... [2025-02-08 01:12:59,037 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f450859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:12:59, skipping insertion in model container [2025-02-08 01:12:59,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:12:59" (3/3) ... [2025-02-08 01:12:59,037 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2025-02-08 01:12:59,047 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:12:59,049 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-name-comparator-subst.wvr.c that has 4 procedures, 36 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-02-08 01:12:59,049 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 01:12:59,092 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-08 01:12:59,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 42 transitions, 105 flow [2025-02-08 01:12:59,143 INFO L124 PetriNetUnfolderBase]: 7/39 cut-off events. [2025-02-08 01:12:59,151 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-08 01:12:59,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 39 events. 7/39 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2025-02-08 01:12:59,155 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 42 transitions, 105 flow [2025-02-08 01:12:59,157 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 38 transitions, 94 flow [2025-02-08 01:12:59,165 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:12:59,172 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;@b064aab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:12:59,172 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-08 01:12:59,187 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 01:12:59,187 INFO L124 PetriNetUnfolderBase]: 7/37 cut-off events. [2025-02-08 01:12:59,187 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-08 01:12:59,187 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:12:59,188 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:12:59,188 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:12:59,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:12:59,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1398030384, now seen corresponding path program 1 times [2025-02-08 01:12:59,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:12:59,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927823467] [2025-02-08 01:12:59,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:12:59,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:12:59,262 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-08 01:12:59,282 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 01:12:59,283 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:12:59,283 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:12:59,504 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 01:12:59,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:12:59,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927823467] [2025-02-08 01:12:59,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927823467] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:12:59,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:12:59,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 01:12:59,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352171374] [2025-02-08 01:12:59,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:12:59,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 01:12:59,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:12:59,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 01:12:59,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 01:12:59,534 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2025-02-08 01:12:59,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 01:12:59,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:12:59,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2025-02-08 01:12:59,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:12:59,965 INFO L124 PetriNetUnfolderBase]: 2032/2892 cut-off events. [2025-02-08 01:12:59,965 INFO L125 PetriNetUnfolderBase]: For 185/185 co-relation queries the response was YES. [2025-02-08 01:12:59,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5959 conditions, 2892 events. 2032/2892 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 11277 event pairs, 1692 based on Foata normal form. 0/2213 useless extension candidates. Maximal degree in co-relation 5558. Up to 2891 conditions per place. [2025-02-08 01:12:59,985 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 30 selfloop transitions, 2 changer transitions 3/36 dead transitions. [2025-02-08 01:12:59,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 36 transitions, 160 flow [2025-02-08 01:12:59,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 01:12:59,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 01:12:59,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2025-02-08 01:12:59,995 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2025-02-08 01:12:59,997 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 94 flow. Second operand 3 states and 51 transitions. [2025-02-08 01:12:59,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 36 transitions, 160 flow [2025-02-08 01:13:00,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 36 transitions, 148 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-02-08 01:13:00,008 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 82 flow [2025-02-08 01:13:00,011 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2025-02-08 01:13:00,015 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, -3 predicate places. [2025-02-08 01:13:00,015 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 82 flow [2025-02-08 01:13:00,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:00,015 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:00,015 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:00,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 01:13:00,016 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:00,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:00,017 INFO L85 PathProgramCache]: Analyzing trace with hash 469724603, now seen corresponding path program 1 times [2025-02-08 01:13:00,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:00,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644967480] [2025-02-08 01:13:00,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:13:00,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:00,039 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 01:13:00,060 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 01:13:00,060 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:13:00,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:00,220 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 01:13:00,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:00,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644967480] [2025-02-08 01:13:00,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644967480] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:00,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109601368] [2025-02-08 01:13:00,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:13:00,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:00,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:00,227 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 01:13:00,229 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 01:13:00,293 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 01:13:00,324 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 01:13:00,325 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:13:00,325 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:00,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 01:13:00,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:13:00,372 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 01:13:00,373 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:13:00,395 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 01:13:00,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109601368] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:13:00,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:13:00,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2025-02-08 01:13:00,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399272092] [2025-02-08 01:13:00,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:13:00,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 01:13:00,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:00,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 01:13:00,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2025-02-08 01:13:00,397 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2025-02-08 01:13:00,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 82 flow. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 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 01:13:00,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:00,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2025-02-08 01:13:00,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:00,615 INFO L124 PetriNetUnfolderBase]: 1316/1882 cut-off events. [2025-02-08 01:13:00,615 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2025-02-08 01:13:00,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3817 conditions, 1882 events. 1316/1882 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6671 event pairs, 1060 based on Foata normal form. 0/1626 useless extension candidates. Maximal degree in co-relation 3806. Up to 1879 conditions per place. [2025-02-08 01:13:00,628 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 30 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2025-02-08 01:13:00,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 158 flow [2025-02-08 01:13:00,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:13:00,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:13:00,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 56 transitions. [2025-02-08 01:13:00,629 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.26666666666666666 [2025-02-08 01:13:00,629 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 82 flow. Second operand 5 states and 56 transitions. [2025-02-08 01:13:00,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 158 flow [2025-02-08 01:13:00,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 35 transitions, 154 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-02-08 01:13:00,631 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 104 flow [2025-02-08 01:13:00,631 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=104, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2025-02-08 01:13:00,631 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, -1 predicate places. [2025-02-08 01:13:00,631 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 104 flow [2025-02-08 01:13:00,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 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 01:13:00,632 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:00,632 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:00,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-08 01:13:00,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:00,833 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:00,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:00,834 INFO L85 PathProgramCache]: Analyzing trace with hash -100755141, now seen corresponding path program 2 times [2025-02-08 01:13:00,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:00,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667479746] [2025-02-08 01:13:00,834 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:13:00,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:00,850 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-02-08 01:13:00,889 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 28 of 31 statements. [2025-02-08 01:13:00,889 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:13:00,889 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:01,280 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:01,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:01,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667479746] [2025-02-08 01:13:01,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667479746] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:13:01,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:13:01,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 01:13:01,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215506127] [2025-02-08 01:13:01,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:01,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:13:01,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:01,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:13:01,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:13:01,282 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2025-02-08 01:13:01,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 104 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:01,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:01,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2025-02-08 01:13:01,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:01,754 INFO L124 PetriNetUnfolderBase]: 3313/4759 cut-off events. [2025-02-08 01:13:01,754 INFO L125 PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES. [2025-02-08 01:13:01,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9607 conditions, 4759 events. 3313/4759 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 21793 event pairs, 1060 based on Foata normal form. 1/4072 useless extension candidates. Maximal degree in co-relation 9580. Up to 1947 conditions per place. [2025-02-08 01:13:01,783 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 85 selfloop transitions, 7 changer transitions 13/106 dead transitions. [2025-02-08 01:13:01,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 106 transitions, 469 flow [2025-02-08 01:13:01,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:13:01,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:13:01,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2025-02-08 01:13:01,786 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.503968253968254 [2025-02-08 01:13:01,786 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 104 flow. Second operand 6 states and 127 transitions. [2025-02-08 01:13:01,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 106 transitions, 469 flow [2025-02-08 01:13:01,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 106 transitions, 459 flow, removed 4 selfloop flow, removed 1 redundant places. [2025-02-08 01:13:01,789 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 145 flow [2025-02-08 01:13:01,790 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=145, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2025-02-08 01:13:01,790 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 7 predicate places. [2025-02-08 01:13:01,791 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 145 flow [2025-02-08 01:13:01,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:01,791 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:01,791 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:01,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 01:13:01,792 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:01,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:01,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1249026169, now seen corresponding path program 3 times [2025-02-08 01:13:01,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:01,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666632583] [2025-02-08 01:13:01,793 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:13:01,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:01,804 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 3 equivalence classes. [2025-02-08 01:13:01,835 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 28 of 31 statements. [2025-02-08 01:13:01,835 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 01:13:01,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:02,059 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:02,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:02,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666632583] [2025-02-08 01:13:02,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666632583] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:13:02,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:13:02,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 01:13:02,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124512549] [2025-02-08 01:13:02,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:02,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:13:02,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:02,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:13:02,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:13:02,060 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2025-02-08 01:13:02,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 145 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:02,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:02,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2025-02-08 01:13:02,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:02,591 INFO L124 PetriNetUnfolderBase]: 5158/7387 cut-off events. [2025-02-08 01:13:02,592 INFO L125 PetriNetUnfolderBase]: For 1990/1990 co-relation queries the response was YES. [2025-02-08 01:13:02,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17403 conditions, 7387 events. 5158/7387 cut-off events. For 1990/1990 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 35530 event pairs, 2184 based on Foata normal form. 1/7052 useless extension candidates. Maximal degree in co-relation 17376. Up to 3506 conditions per place. [2025-02-08 01:13:02,627 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 83 selfloop transitions, 8 changer transitions 13/105 dead transitions. [2025-02-08 01:13:02,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 105 transitions, 530 flow [2025-02-08 01:13:02,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:13:02,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:13:02,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2025-02-08 01:13:02,629 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2025-02-08 01:13:02,629 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 145 flow. Second operand 6 states and 116 transitions. [2025-02-08 01:13:02,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 105 transitions, 530 flow [2025-02-08 01:13:02,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 105 transitions, 526 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-02-08 01:13:02,635 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 202 flow [2025-02-08 01:13:02,636 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=202, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2025-02-08 01:13:02,637 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 14 predicate places. [2025-02-08 01:13:02,637 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 202 flow [2025-02-08 01:13:02,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:02,638 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:02,638 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:02,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 01:13:02,638 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:02,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:02,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1281765769, now seen corresponding path program 4 times [2025-02-08 01:13:02,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:02,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490602396] [2025-02-08 01:13:02,638 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:13:02,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:02,648 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-02-08 01:13:02,660 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 24 of 31 statements. [2025-02-08 01:13:02,660 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 01:13:02,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:02,835 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:02,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:02,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490602396] [2025-02-08 01:13:02,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490602396] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:13:02,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:13:02,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 01:13:02,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032456188] [2025-02-08 01:13:02,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:02,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:13:02,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:02,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:13:02,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-08 01:13:02,837 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2025-02-08 01:13:02,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 202 flow. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:02,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:02,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2025-02-08 01:13:02,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:04,133 INFO L124 PetriNetUnfolderBase]: 12509/18155 cut-off events. [2025-02-08 01:13:04,134 INFO L125 PetriNetUnfolderBase]: For 16507/16507 co-relation queries the response was YES. [2025-02-08 01:13:04,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47942 conditions, 18155 events. 12509/18155 cut-off events. For 16507/16507 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 107797 event pairs, 4609 based on Foata normal form. 2/17301 useless extension candidates. Maximal degree in co-relation 47911. Up to 7536 conditions per place. [2025-02-08 01:13:04,238 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 143 selfloop transitions, 18 changer transitions 4/166 dead transitions. [2025-02-08 01:13:04,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 166 transitions, 1098 flow [2025-02-08 01:13:04,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:13:04,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:13:04,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2025-02-08 01:13:04,239 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5136054421768708 [2025-02-08 01:13:04,239 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 202 flow. Second operand 7 states and 151 transitions. [2025-02-08 01:13:04,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 166 transitions, 1098 flow [2025-02-08 01:13:04,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 166 transitions, 1064 flow, removed 5 selfloop flow, removed 2 redundant places. [2025-02-08 01:13:04,254 INFO L231 Difference]: Finished difference. Result has 63 places, 62 transitions, 400 flow [2025-02-08 01:13:04,254 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=400, PETRI_PLACES=63, PETRI_TRANSITIONS=62} [2025-02-08 01:13:04,255 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 22 predicate places. [2025-02-08 01:13:04,255 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 62 transitions, 400 flow [2025-02-08 01:13:04,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:04,255 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:04,255 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:04,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 01:13:04,256 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:04,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:04,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1221019653, now seen corresponding path program 5 times [2025-02-08 01:13:04,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:04,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819242108] [2025-02-08 01:13:04,256 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:13:04,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:04,266 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 31 statements into 3 equivalence classes. [2025-02-08 01:13:04,297 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 01:13:04,297 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-08 01:13:04,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:05,083 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:13:05,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:05,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819242108] [2025-02-08 01:13:05,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819242108] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:05,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118203434] [2025-02-08 01:13:05,084 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:13:05,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:05,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:05,086 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 01:13:05,088 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 01:13:05,139 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 31 statements into 3 equivalence classes. [2025-02-08 01:13:05,162 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 01:13:05,162 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-08 01:13:05,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:05,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-08 01:13:05,165 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:13:05,361 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:05,361 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 01:13:05,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118203434] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:13:05,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 01:13:05,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2025-02-08 01:13:05,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623909748] [2025-02-08 01:13:05,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:05,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:13:05,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:05,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:13:05,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2025-02-08 01:13:05,364 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2025-02-08 01:13:05,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 400 flow. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:05,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:05,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2025-02-08 01:13:05,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:06,696 INFO L124 PetriNetUnfolderBase]: 12594/18301 cut-off events. [2025-02-08 01:13:06,697 INFO L125 PetriNetUnfolderBase]: For 26360/26360 co-relation queries the response was YES. [2025-02-08 01:13:06,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54807 conditions, 18301 events. 12594/18301 cut-off events. For 26360/26360 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 105646 event pairs, 5034 based on Foata normal form. 1/18302 useless extension candidates. Maximal degree in co-relation 54772. Up to 8254 conditions per place. [2025-02-08 01:13:06,828 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 119 selfloop transitions, 27 changer transitions 4/151 dead transitions. [2025-02-08 01:13:06,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 151 transitions, 1073 flow [2025-02-08 01:13:06,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:13:06,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:13:06,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2025-02-08 01:13:06,829 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46258503401360546 [2025-02-08 01:13:06,829 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 400 flow. Second operand 7 states and 136 transitions. [2025-02-08 01:13:06,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 151 transitions, 1073 flow [2025-02-08 01:13:06,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 151 transitions, 1073 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 01:13:06,889 INFO L231 Difference]: Finished difference. Result has 74 places, 76 transitions, 635 flow [2025-02-08 01:13:06,890 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=635, PETRI_PLACES=74, PETRI_TRANSITIONS=76} [2025-02-08 01:13:06,890 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 33 predicate places. [2025-02-08 01:13:06,890 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 76 transitions, 635 flow [2025-02-08 01:13:06,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:06,891 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:06,891 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:06,897 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 01:13:07,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:07,095 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:07,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:07,096 INFO L85 PathProgramCache]: Analyzing trace with hash -394199173, now seen corresponding path program 6 times [2025-02-08 01:13:07,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:07,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143150731] [2025-02-08 01:13:07,096 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:13:07,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:07,107 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 31 statements into 3 equivalence classes. [2025-02-08 01:13:07,121 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 28 of 31 statements. [2025-02-08 01:13:07,121 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-08 01:13:07,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:07,360 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:07,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:07,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143150731] [2025-02-08 01:13:07,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143150731] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:13:07,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:13:07,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 01:13:07,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668866574] [2025-02-08 01:13:07,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:07,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:13:07,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:07,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:13:07,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-08 01:13:07,364 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2025-02-08 01:13:07,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 76 transitions, 635 flow. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:07,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:07,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2025-02-08 01:13:07,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:08,754 INFO L124 PetriNetUnfolderBase]: 12594/18293 cut-off events. [2025-02-08 01:13:08,754 INFO L125 PetriNetUnfolderBase]: For 41842/41842 co-relation queries the response was YES. [2025-02-08 01:13:08,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59877 conditions, 18293 events. 12594/18293 cut-off events. For 41842/41842 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 106669 event pairs, 4931 based on Foata normal form. 4/18297 useless extension candidates. Maximal degree in co-relation 59836. Up to 8735 conditions per place. [2025-02-08 01:13:08,855 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 107 selfloop transitions, 28 changer transitions 16/152 dead transitions. [2025-02-08 01:13:08,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 152 transitions, 1285 flow [2025-02-08 01:13:08,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:13:08,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:13:08,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2025-02-08 01:13:08,857 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2025-02-08 01:13:08,857 INFO L175 Difference]: Start difference. First operand has 74 places, 76 transitions, 635 flow. Second operand 6 states and 120 transitions. [2025-02-08 01:13:08,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 152 transitions, 1285 flow [2025-02-08 01:13:08,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 152 transitions, 1243 flow, removed 13 selfloop flow, removed 1 redundant places. [2025-02-08 01:13:08,926 INFO L231 Difference]: Finished difference. Result has 82 places, 81 transitions, 767 flow [2025-02-08 01:13:08,927 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=767, PETRI_PLACES=82, PETRI_TRANSITIONS=81} [2025-02-08 01:13:08,927 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 41 predicate places. [2025-02-08 01:13:08,927 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 81 transitions, 767 flow [2025-02-08 01:13:08,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:08,927 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:08,928 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:08,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 01:13:08,928 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:08,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:08,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1112464593, now seen corresponding path program 7 times [2025-02-08 01:13:08,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:08,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315474145] [2025-02-08 01:13:08,929 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:13:08,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:08,940 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-08 01:13:08,954 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 01:13:08,954 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:13:08,954 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:09,134 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:09,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:09,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315474145] [2025-02-08 01:13:09,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315474145] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:13:09,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:13:09,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 01:13:09,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028740902] [2025-02-08 01:13:09,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:09,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:13:09,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:09,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:13:09,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:13:09,135 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2025-02-08 01:13:09,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 81 transitions, 767 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:09,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:09,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2025-02-08 01:13:09,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:10,258 INFO L124 PetriNetUnfolderBase]: 12534/18172 cut-off events. [2025-02-08 01:13:10,258 INFO L125 PetriNetUnfolderBase]: For 53581/53581 co-relation queries the response was YES. [2025-02-08 01:13:10,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61971 conditions, 18172 events. 12534/18172 cut-off events. For 53581/53581 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 106067 event pairs, 4423 based on Foata normal form. 5/18177 useless extension candidates. Maximal degree in co-relation 61926. Up to 8235 conditions per place. [2025-02-08 01:13:10,381 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 106 selfloop transitions, 32 changer transitions 18/157 dead transitions. [2025-02-08 01:13:10,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 157 transitions, 1424 flow [2025-02-08 01:13:10,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:13:10,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:13:10,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2025-02-08 01:13:10,382 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48412698412698413 [2025-02-08 01:13:10,382 INFO L175 Difference]: Start difference. First operand has 82 places, 81 transitions, 767 flow. Second operand 6 states and 122 transitions. [2025-02-08 01:13:10,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 157 transitions, 1424 flow [2025-02-08 01:13:10,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 157 transitions, 1397 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-02-08 01:13:10,484 INFO L231 Difference]: Finished difference. Result has 87 places, 85 transitions, 878 flow [2025-02-08 01:13:10,484 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=878, PETRI_PLACES=87, PETRI_TRANSITIONS=85} [2025-02-08 01:13:10,485 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 46 predicate places. [2025-02-08 01:13:10,485 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 85 transitions, 878 flow [2025-02-08 01:13:10,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:10,485 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:10,485 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:10,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 01:13:10,485 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:10,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:10,486 INFO L85 PathProgramCache]: Analyzing trace with hash 657881729, now seen corresponding path program 8 times [2025-02-08 01:13:10,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:10,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728895578] [2025-02-08 01:13:10,486 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:13:10,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:10,495 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-02-08 01:13:10,501 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 28 of 31 statements. [2025-02-08 01:13:10,502 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:13:10,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:10,655 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:10,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:10,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728895578] [2025-02-08 01:13:10,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728895578] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:13:10,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:13:10,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 01:13:10,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256399120] [2025-02-08 01:13:10,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:10,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:13:10,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:10,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:13:10,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:13:10,658 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2025-02-08 01:13:10,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 85 transitions, 878 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:10,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:10,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2025-02-08 01:13:10,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:12,166 INFO L124 PetriNetUnfolderBase]: 12496/18142 cut-off events. [2025-02-08 01:13:12,166 INFO L125 PetriNetUnfolderBase]: For 65932/65932 co-relation queries the response was YES. [2025-02-08 01:13:12,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63454 conditions, 18142 events. 12496/18142 cut-off events. For 65932/65932 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 104625 event pairs, 5034 based on Foata normal form. 5/18147 useless extension candidates. Maximal degree in co-relation 63407. Up to 8254 conditions per place. [2025-02-08 01:13:12,356 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 112 selfloop transitions, 28 changer transitions 18/159 dead transitions. [2025-02-08 01:13:12,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 159 transitions, 1504 flow [2025-02-08 01:13:12,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:13:12,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:13:12,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2025-02-08 01:13:12,357 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48412698412698413 [2025-02-08 01:13:12,357 INFO L175 Difference]: Start difference. First operand has 87 places, 85 transitions, 878 flow. Second operand 6 states and 122 transitions. [2025-02-08 01:13:12,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 159 transitions, 1504 flow [2025-02-08 01:13:12,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 159 transitions, 1436 flow, removed 11 selfloop flow, removed 3 redundant places. [2025-02-08 01:13:12,492 INFO L231 Difference]: Finished difference. Result has 90 places, 85 transitions, 887 flow [2025-02-08 01:13:12,492 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=887, PETRI_PLACES=90, PETRI_TRANSITIONS=85} [2025-02-08 01:13:12,493 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 49 predicate places. [2025-02-08 01:13:12,493 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 85 transitions, 887 flow [2025-02-08 01:13:12,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:12,493 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:12,493 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:12,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 01:13:12,494 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:12,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:12,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1549112487, now seen corresponding path program 9 times [2025-02-08 01:13:12,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:12,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878073752] [2025-02-08 01:13:12,494 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:13:12,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:12,503 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 3 equivalence classes. [2025-02-08 01:13:12,513 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 28 of 31 statements. [2025-02-08 01:13:12,513 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 01:13:12,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:12,693 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:12,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:12,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878073752] [2025-02-08 01:13:12,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878073752] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:13:12,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:13:12,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 01:13:12,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66571865] [2025-02-08 01:13:12,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:12,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:13:12,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:12,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:13:12,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:13:12,695 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2025-02-08 01:13:12,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 85 transitions, 887 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:12,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:12,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2025-02-08 01:13:12,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:14,012 INFO L124 PetriNetUnfolderBase]: 12419/17991 cut-off events. [2025-02-08 01:13:14,012 INFO L125 PetriNetUnfolderBase]: For 67051/67051 co-relation queries the response was YES. [2025-02-08 01:13:14,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62459 conditions, 17991 events. 12419/17991 cut-off events. For 67051/67051 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 103072 event pairs, 4903 based on Foata normal form. 5/17996 useless extension candidates. Maximal degree in co-relation 62411. Up to 8254 conditions per place. [2025-02-08 01:13:14,130 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 112 selfloop transitions, 30 changer transitions 20/163 dead transitions. [2025-02-08 01:13:14,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 163 transitions, 1604 flow [2025-02-08 01:13:14,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:13:14,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:13:14,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2025-02-08 01:13:14,131 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2025-02-08 01:13:14,131 INFO L175 Difference]: Start difference. First operand has 90 places, 85 transitions, 887 flow. Second operand 6 states and 120 transitions. [2025-02-08 01:13:14,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 163 transitions, 1604 flow [2025-02-08 01:13:14,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 163 transitions, 1528 flow, removed 5 selfloop flow, removed 5 redundant places. [2025-02-08 01:13:14,247 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 973 flow [2025-02-08 01:13:14,247 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=973, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2025-02-08 01:13:14,247 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 51 predicate places. [2025-02-08 01:13:14,247 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 973 flow [2025-02-08 01:13:14,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:14,247 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:14,247 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:14,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-08 01:13:14,248 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:14,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:14,248 INFO L85 PathProgramCache]: Analyzing trace with hash -476368172, now seen corresponding path program 1 times [2025-02-08 01:13:14,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:14,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951390000] [2025-02-08 01:13:14,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:13:14,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:14,260 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-08 01:13:14,280 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-08 01:13:14,281 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:13:14,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:14,428 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:14,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:14,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951390000] [2025-02-08 01:13:14,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951390000] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:14,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111747583] [2025-02-08 01:13:14,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:13:14,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:14,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:14,431 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 01:13:14,433 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 01:13:14,480 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-08 01:13:14,502 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-08 01:13:14,502 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:13:14,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:14,503 INFO L256 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 01:13:14,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:13:14,676 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:14,676 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:13:14,753 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:14,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111747583] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:14,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 01:13:14,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 12 [2025-02-08 01:13:14,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108874015] [2025-02-08 01:13:14,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:14,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:13:14,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:14,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:13:14,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2025-02-08 01:13:14,755 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2025-02-08 01:13:14,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 973 flow. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:14,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:14,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2025-02-08 01:13:14,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:16,359 INFO L124 PetriNetUnfolderBase]: 16267/23604 cut-off events. [2025-02-08 01:13:16,360 INFO L125 PetriNetUnfolderBase]: For 79208/79208 co-relation queries the response was YES. [2025-02-08 01:13:16,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79852 conditions, 23604 events. 16267/23604 cut-off events. For 79208/79208 co-relation queries the response was YES. Maximal size of possible extension queue 804. Compared 145487 event pairs, 1760 based on Foata normal form. 16/23620 useless extension candidates. Maximal degree in co-relation 79802. Up to 11848 conditions per place. [2025-02-08 01:13:16,580 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 180 selfloop transitions, 29 changer transitions 2/212 dead transitions. [2025-02-08 01:13:16,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 212 transitions, 2162 flow [2025-02-08 01:13:16,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:13:16,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:13:16,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2025-02-08 01:13:16,585 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5204081632653061 [2025-02-08 01:13:16,585 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 973 flow. Second operand 7 states and 153 transitions. [2025-02-08 01:13:16,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 212 transitions, 2162 flow [2025-02-08 01:13:16,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 212 transitions, 2040 flow, removed 23 selfloop flow, removed 4 redundant places. [2025-02-08 01:13:16,781 INFO L231 Difference]: Finished difference. Result has 98 places, 108 transitions, 1267 flow [2025-02-08 01:13:16,781 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1267, PETRI_PLACES=98, PETRI_TRANSITIONS=108} [2025-02-08 01:13:16,782 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 57 predicate places. [2025-02-08 01:13:16,782 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 108 transitions, 1267 flow [2025-02-08 01:13:16,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:16,782 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:16,782 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:16,788 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 01:13:16,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:16,983 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:16,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:16,983 INFO L85 PathProgramCache]: Analyzing trace with hash -311403132, now seen corresponding path program 2 times [2025-02-08 01:13:16,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:16,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544460101] [2025-02-08 01:13:16,983 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:13:16,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:16,992 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 33 statements into 2 equivalence classes. [2025-02-08 01:13:17,004 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-02-08 01:13:17,007 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:13:17,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:17,190 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:17,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:17,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544460101] [2025-02-08 01:13:17,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544460101] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:17,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780365911] [2025-02-08 01:13:17,191 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:13:17,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:17,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:17,194 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 01:13:17,195 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 01:13:17,245 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 33 statements into 2 equivalence classes. [2025-02-08 01:13:17,270 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-02-08 01:13:17,270 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:13:17,270 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:17,271 INFO L256 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 01:13:17,273 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:13:17,367 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:17,367 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:13:17,420 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:17,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780365911] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:17,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 01:13:17,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 13 [2025-02-08 01:13:17,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236389762] [2025-02-08 01:13:17,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:17,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:13:17,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:17,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:13:17,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2025-02-08 01:13:17,422 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2025-02-08 01:13:17,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 108 transitions, 1267 flow. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:17,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:17,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2025-02-08 01:13:17,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:19,136 INFO L124 PetriNetUnfolderBase]: 16667/24260 cut-off events. [2025-02-08 01:13:19,137 INFO L125 PetriNetUnfolderBase]: For 104161/104161 co-relation queries the response was YES. [2025-02-08 01:13:19,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87453 conditions, 24260 events. 16667/24260 cut-off events. For 104161/104161 co-relation queries the response was YES. Maximal size of possible extension queue 841. Compared 149660 event pairs, 4690 based on Foata normal form. 16/24276 useless extension candidates. Maximal degree in co-relation 87400. Up to 7932 conditions per place. [2025-02-08 01:13:19,361 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 234 selfloop transitions, 53 changer transitions 2/290 dead transitions. [2025-02-08 01:13:19,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 290 transitions, 3324 flow [2025-02-08 01:13:19,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 01:13:19,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-08 01:13:19,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 186 transitions. [2025-02-08 01:13:19,362 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2025-02-08 01:13:19,362 INFO L175 Difference]: Start difference. First operand has 98 places, 108 transitions, 1267 flow. Second operand 9 states and 186 transitions. [2025-02-08 01:13:19,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 290 transitions, 3324 flow [2025-02-08 01:13:19,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 290 transitions, 3295 flow, removed 10 selfloop flow, removed 1 redundant places. [2025-02-08 01:13:19,616 INFO L231 Difference]: Finished difference. Result has 111 places, 143 transitions, 1989 flow [2025-02-08 01:13:19,616 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1251, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1989, PETRI_PLACES=111, PETRI_TRANSITIONS=143} [2025-02-08 01:13:19,616 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 70 predicate places. [2025-02-08 01:13:19,617 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 143 transitions, 1989 flow [2025-02-08 01:13:19,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:19,617 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:19,617 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:19,623 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 01:13:19,817 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,SelfDestructingSolverStorable11 [2025-02-08 01:13:19,818 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:19,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:19,818 INFO L85 PathProgramCache]: Analyzing trace with hash -438213200, now seen corresponding path program 3 times [2025-02-08 01:13:19,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:19,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158358704] [2025-02-08 01:13:19,818 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:13:19,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:19,824 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 33 statements into 3 equivalence classes. [2025-02-08 01:13:19,840 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 32 of 33 statements. [2025-02-08 01:13:19,840 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:13:19,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:20,068 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:20,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:20,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158358704] [2025-02-08 01:13:20,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158358704] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:20,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639735336] [2025-02-08 01:13:20,069 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:13:20,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:20,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:20,071 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 01:13:20,072 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 01:13:20,121 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 33 statements into 3 equivalence classes. [2025-02-08 01:13:20,144 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 32 of 33 statements. [2025-02-08 01:13:20,144 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:13:20,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:20,145 INFO L256 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 01:13:20,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:13:20,336 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:20,337 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:13:20,420 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:20,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639735336] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:20,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 01:13:20,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 17 [2025-02-08 01:13:20,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575832396] [2025-02-08 01:13:20,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:20,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:13:20,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:20,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:13:20,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2025-02-08 01:13:20,422 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2025-02-08 01:13:20,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 143 transitions, 1989 flow. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:20,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:20,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2025-02-08 01:13:20,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:22,357 INFO L124 PetriNetUnfolderBase]: 17979/26332 cut-off events. [2025-02-08 01:13:22,357 INFO L125 PetriNetUnfolderBase]: For 144296/144296 co-relation queries the response was YES. [2025-02-08 01:13:22,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102238 conditions, 26332 events. 17979/26332 cut-off events. For 144296/144296 co-relation queries the response was YES. Maximal size of possible extension queue 920. Compared 166742 event pairs, 4876 based on Foata normal form. 10/26342 useless extension candidates. Maximal degree in co-relation 102179. Up to 7868 conditions per place. [2025-02-08 01:13:22,719 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 231 selfloop transitions, 61 changer transitions 2/295 dead transitions. [2025-02-08 01:13:22,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 295 transitions, 3599 flow [2025-02-08 01:13:22,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:13:22,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:13:22,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2025-02-08 01:13:22,721 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5565476190476191 [2025-02-08 01:13:22,722 INFO L175 Difference]: Start difference. First operand has 111 places, 143 transitions, 1989 flow. Second operand 8 states and 187 transitions. [2025-02-08 01:13:22,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 295 transitions, 3599 flow [2025-02-08 01:13:23,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 295 transitions, 3563 flow, removed 18 selfloop flow, removed 0 redundant places. [2025-02-08 01:13:23,286 INFO L231 Difference]: Finished difference. Result has 121 places, 153 transitions, 2263 flow [2025-02-08 01:13:23,286 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1963, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2263, PETRI_PLACES=121, PETRI_TRANSITIONS=153} [2025-02-08 01:13:23,286 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 80 predicate places. [2025-02-08 01:13:23,286 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 153 transitions, 2263 flow [2025-02-08 01:13:23,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:23,286 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:23,287 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:23,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-08 01:13:23,487 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,SelfDestructingSolverStorable12 [2025-02-08 01:13:23,487 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:23,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:23,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1418416606, now seen corresponding path program 1 times [2025-02-08 01:13:23,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:23,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929436042] [2025-02-08 01:13:23,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:13:23,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:23,495 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-08 01:13:23,510 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-08 01:13:23,510 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:13:23,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:23,601 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:23,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:23,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929436042] [2025-02-08 01:13:23,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929436042] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:13:23,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:13:23,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 01:13:23,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943126518] [2025-02-08 01:13:23,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:23,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:13:23,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:23,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:13:23,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-08 01:13:23,603 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2025-02-08 01:13:23,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 153 transitions, 2263 flow. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:23,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:23,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2025-02-08 01:13:23,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:26,212 INFO L124 PetriNetUnfolderBase]: 22069/32282 cut-off events. [2025-02-08 01:13:26,212 INFO L125 PetriNetUnfolderBase]: For 191636/191636 co-relation queries the response was YES. [2025-02-08 01:13:26,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126420 conditions, 32282 events. 22069/32282 cut-off events. For 191636/191636 co-relation queries the response was YES. Maximal size of possible extension queue 1119. Compared 206289 event pairs, 3651 based on Foata normal form. 30/32312 useless extension candidates. Maximal degree in co-relation 126357. Up to 13991 conditions per place. [2025-02-08 01:13:26,630 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 286 selfloop transitions, 42 changer transitions 2/331 dead transitions. [2025-02-08 01:13:26,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 331 transitions, 4667 flow [2025-02-08 01:13:26,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:13:26,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:13:26,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2025-02-08 01:13:26,631 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5170068027210885 [2025-02-08 01:13:26,631 INFO L175 Difference]: Start difference. First operand has 121 places, 153 transitions, 2263 flow. Second operand 7 states and 152 transitions. [2025-02-08 01:13:26,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 331 transitions, 4667 flow [2025-02-08 01:13:27,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 331 transitions, 4492 flow, removed 40 selfloop flow, removed 2 redundant places. [2025-02-08 01:13:27,503 INFO L231 Difference]: Finished difference. Result has 129 places, 173 transitions, 2645 flow [2025-02-08 01:13:27,503 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2179, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2645, PETRI_PLACES=129, PETRI_TRANSITIONS=173} [2025-02-08 01:13:27,504 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 88 predicate places. [2025-02-08 01:13:27,504 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 173 transitions, 2645 flow [2025-02-08 01:13:27,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:27,504 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:27,504 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:27,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-08 01:13:27,504 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:27,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:27,505 INFO L85 PathProgramCache]: Analyzing trace with hash 690250768, now seen corresponding path program 4 times [2025-02-08 01:13:27,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:27,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831190862] [2025-02-08 01:13:27,505 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:13:27,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:27,510 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 33 statements into 2 equivalence classes. [2025-02-08 01:13:27,516 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-02-08 01:13:27,517 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:13:27,518 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:27,662 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:27,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:27,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831190862] [2025-02-08 01:13:27,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831190862] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:27,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131420557] [2025-02-08 01:13:27,663 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:13:27,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:27,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:27,665 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 01:13:27,666 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 01:13:27,715 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 33 statements into 2 equivalence classes. [2025-02-08 01:13:27,743 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-02-08 01:13:27,744 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:13:27,744 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:27,745 INFO L256 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 01:13:27,746 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:13:27,912 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:27,912 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:13:27,978 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:27,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131420557] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:27,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 01:13:27,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 12 [2025-02-08 01:13:27,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159283592] [2025-02-08 01:13:27,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:27,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:13:27,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:27,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:13:27,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2025-02-08 01:13:27,979 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2025-02-08 01:13:27,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 173 transitions, 2645 flow. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:27,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:27,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2025-02-08 01:13:27,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:30,825 INFO L124 PetriNetUnfolderBase]: 22729/33364 cut-off events. [2025-02-08 01:13:30,825 INFO L125 PetriNetUnfolderBase]: For 204412/204412 co-relation queries the response was YES. [2025-02-08 01:13:31,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129771 conditions, 33364 events. 22729/33364 cut-off events. For 204412/204412 co-relation queries the response was YES. Maximal size of possible extension queue 1192. Compared 218353 event pairs, 6026 based on Foata normal form. 16/33380 useless extension candidates. Maximal degree in co-relation 129704. Up to 10587 conditions per place. [2025-02-08 01:13:31,211 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 237 selfloop transitions, 78 changer transitions 2/318 dead transitions. [2025-02-08 01:13:31,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 318 transitions, 4278 flow [2025-02-08 01:13:31,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:13:31,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:13:31,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2025-02-08 01:13:31,213 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5505952380952381 [2025-02-08 01:13:31,213 INFO L175 Difference]: Start difference. First operand has 129 places, 173 transitions, 2645 flow. Second operand 8 states and 185 transitions. [2025-02-08 01:13:31,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 318 transitions, 4278 flow [2025-02-08 01:13:31,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 318 transitions, 4196 flow, removed 6 selfloop flow, removed 2 redundant places. [2025-02-08 01:13:31,964 INFO L231 Difference]: Finished difference. Result has 137 places, 177 transitions, 2860 flow [2025-02-08 01:13:31,964 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2603, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2860, PETRI_PLACES=137, PETRI_TRANSITIONS=177} [2025-02-08 01:13:31,964 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 96 predicate places. [2025-02-08 01:13:31,964 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 177 transitions, 2860 flow [2025-02-08 01:13:31,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:31,964 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:31,965 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:31,970 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 01:13:32,165 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,SelfDestructingSolverStorable14 [2025-02-08 01:13:32,165 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:32,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:32,166 INFO L85 PathProgramCache]: Analyzing trace with hash 53677440, now seen corresponding path program 2 times [2025-02-08 01:13:32,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:32,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553969418] [2025-02-08 01:13:32,166 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:13:32,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:32,171 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 33 statements into 2 equivalence classes. [2025-02-08 01:13:32,182 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-02-08 01:13:32,182 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:13:32,182 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:32,347 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:32,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:32,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553969418] [2025-02-08 01:13:32,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553969418] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:32,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918663771] [2025-02-08 01:13:32,348 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:13:32,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:32,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:32,351 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 01:13:32,353 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 01:13:32,407 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 33 statements into 2 equivalence classes. [2025-02-08 01:13:32,432 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-02-08 01:13:32,433 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:13:32,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:32,434 INFO L256 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 01:13:32,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:13:32,618 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:32,618 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:13:32,694 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:32,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918663771] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:32,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 01:13:32,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 15 [2025-02-08 01:13:32,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051488783] [2025-02-08 01:13:32,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:32,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:13:32,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:32,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:13:32,696 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2025-02-08 01:13:32,696 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2025-02-08 01:13:32,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 177 transitions, 2860 flow. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:32,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:32,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2025-02-08 01:13:32,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:37,797 INFO L124 PetriNetUnfolderBase]: 37057/54283 cut-off events. [2025-02-08 01:13:37,797 INFO L125 PetriNetUnfolderBase]: For 369136/369136 co-relation queries the response was YES. [2025-02-08 01:13:38,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214208 conditions, 54283 events. 37057/54283 cut-off events. For 369136/369136 co-relation queries the response was YES. Maximal size of possible extension queue 1871. Compared 374525 event pairs, 4880 based on Foata normal form. 30/54313 useless extension candidates. Maximal degree in co-relation 214138. Up to 21040 conditions per place. [2025-02-08 01:13:38,453 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 346 selfloop transitions, 93 changer transitions 2/442 dead transitions. [2025-02-08 01:13:38,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 442 transitions, 7325 flow [2025-02-08 01:13:38,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:13:38,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:13:38,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2025-02-08 01:13:38,454 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5170068027210885 [2025-02-08 01:13:38,454 INFO L175 Difference]: Start difference. First operand has 137 places, 177 transitions, 2860 flow. Second operand 7 states and 152 transitions. [2025-02-08 01:13:38,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 442 transitions, 7325 flow [2025-02-08 01:13:40,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 442 transitions, 6955 flow, removed 36 selfloop flow, removed 4 redundant places. [2025-02-08 01:13:40,190 INFO L231 Difference]: Finished difference. Result has 144 places, 246 transitions, 4268 flow [2025-02-08 01:13:40,192 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2715, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4268, PETRI_PLACES=144, PETRI_TRANSITIONS=246} [2025-02-08 01:13:40,193 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 103 predicate places. [2025-02-08 01:13:40,193 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 246 transitions, 4268 flow [2025-02-08 01:13:40,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:40,193 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:40,193 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:40,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-08 01:13:40,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:40,393 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:40,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:40,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1330791980, now seen corresponding path program 5 times [2025-02-08 01:13:40,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:40,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147374366] [2025-02-08 01:13:40,394 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:13:40,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:40,401 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 33 statements into 3 equivalence classes. [2025-02-08 01:13:40,419 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 33 of 33 statements. [2025-02-08 01:13:40,419 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-08 01:13:40,419 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:40,669 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:13:40,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:40,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147374366] [2025-02-08 01:13:40,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147374366] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:40,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892393341] [2025-02-08 01:13:40,670 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:13:40,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:40,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:40,672 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 01:13:40,673 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 01:13:40,729 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 33 statements into 3 equivalence classes. [2025-02-08 01:13:40,754 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 33 of 33 statements. [2025-02-08 01:13:40,754 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-08 01:13:40,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:40,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 01:13:40,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:13:40,997 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:40,997 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:13:41,076 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:41,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892393341] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:41,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 01:13:41,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2025-02-08 01:13:41,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019650149] [2025-02-08 01:13:41,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:41,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:13:41,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:41,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:13:41,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2025-02-08 01:13:41,078 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2025-02-08 01:13:41,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 246 transitions, 4268 flow. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:41,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:41,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2025-02-08 01:13:41,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:46,823 INFO L124 PetriNetUnfolderBase]: 37031/54238 cut-off events. [2025-02-08 01:13:46,823 INFO L125 PetriNetUnfolderBase]: For 404361/404361 co-relation queries the response was YES. [2025-02-08 01:13:47,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223614 conditions, 54238 events. 37031/54238 cut-off events. For 404361/404361 co-relation queries the response was YES. Maximal size of possible extension queue 1914. Compared 375420 event pairs, 9781 based on Foata normal form. 16/54254 useless extension candidates. Maximal degree in co-relation 223539. Up to 18364 conditions per place. [2025-02-08 01:13:47,687 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 255 selfloop transitions, 136 changer transitions 2/394 dead transitions. [2025-02-08 01:13:47,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 394 transitions, 6175 flow [2025-02-08 01:13:47,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:13:47,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:13:47,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2025-02-08 01:13:47,690 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5565476190476191 [2025-02-08 01:13:47,690 INFO L175 Difference]: Start difference. First operand has 144 places, 246 transitions, 4268 flow. Second operand 8 states and 187 transitions. [2025-02-08 01:13:47,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 394 transitions, 6175 flow [2025-02-08 01:13:50,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 394 transitions, 6159 flow, removed 8 selfloop flow, removed 0 redundant places. [2025-02-08 01:13:50,171 INFO L231 Difference]: Finished difference. Result has 153 places, 249 transitions, 4589 flow [2025-02-08 01:13:50,171 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4254, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4589, PETRI_PLACES=153, PETRI_TRANSITIONS=249} [2025-02-08 01:13:50,172 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 112 predicate places. [2025-02-08 01:13:50,172 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 249 transitions, 4589 flow [2025-02-08 01:13:50,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:50,172 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:50,172 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:50,178 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 01:13:50,374 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,SelfDestructingSolverStorable16 [2025-02-08 01:13:50,375 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:13:50,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:50,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1687578384, now seen corresponding path program 3 times [2025-02-08 01:13:50,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:50,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535699615] [2025-02-08 01:13:50,375 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:13:50,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:50,382 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 33 statements into 3 equivalence classes. [2025-02-08 01:13:50,405 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 32 of 33 statements. [2025-02-08 01:13:50,405 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:13:50,405 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:50,577 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:50,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:50,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535699615] [2025-02-08 01:13:50,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535699615] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:50,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570289969] [2025-02-08 01:13:50,577 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:13:50,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:50,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:50,579 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 01:13:50,580 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 01:13:50,630 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 33 statements into 3 equivalence classes. [2025-02-08 01:13:50,650 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 32 of 33 statements. [2025-02-08 01:13:50,651 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:13:50,651 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:50,652 INFO L256 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 01:13:50,653 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:13:50,829 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:50,829 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:13:50,903 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:50,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570289969] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:50,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 01:13:50,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 16 [2025-02-08 01:13:50,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116478832] [2025-02-08 01:13:50,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:50,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:13:50,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:50,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:13:50,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2025-02-08 01:13:50,904 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2025-02-08 01:13:50,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 249 transitions, 4589 flow. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:50,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:50,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2025-02-08 01:13:50,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:57,142 INFO L124 PetriNetUnfolderBase]: 38788/57198 cut-off events. [2025-02-08 01:13:57,142 INFO L125 PetriNetUnfolderBase]: For 473763/473763 co-relation queries the response was YES. [2025-02-08 01:13:57,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240677 conditions, 57198 events. 38788/57198 cut-off events. For 473763/473763 co-relation queries the response was YES. Maximal size of possible extension queue 2051. Compared 403600 event pairs, 11470 based on Foata normal form. 30/57228 useless extension candidates. Maximal degree in co-relation 240599. Up to 25311 conditions per place. [2025-02-08 01:13:58,079 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 345 selfloop transitions, 192 changer transitions 2/540 dead transitions. [2025-02-08 01:13:58,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 540 transitions, 10005 flow [2025-02-08 01:13:58,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:13:58,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:13:58,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2025-02-08 01:13:58,080 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5446428571428571 [2025-02-08 01:13:58,080 INFO L175 Difference]: Start difference. First operand has 153 places, 249 transitions, 4589 flow. Second operand 8 states and 183 transitions. [2025-02-08 01:13:58,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 540 transitions, 10005 flow [2025-02-08 01:14:00,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 540 transitions, 9587 flow, removed 8 selfloop flow, removed 4 redundant places. [2025-02-08 01:14:00,661 INFO L231 Difference]: Finished difference. Result has 162 places, 347 transitions, 7090 flow [2025-02-08 01:14:00,661 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4378, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7090, PETRI_PLACES=162, PETRI_TRANSITIONS=347} [2025-02-08 01:14:00,662 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 121 predicate places. [2025-02-08 01:14:00,662 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 347 transitions, 7090 flow [2025-02-08 01:14:00,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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 01:14:00,662 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:00,663 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:14:00,669 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 01:14:00,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-08 01:14:00,863 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:14:00,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:00,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1359774790, now seen corresponding path program 6 times [2025-02-08 01:14:00,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:00,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679695233] [2025-02-08 01:14:00,864 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:14:00,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:00,869 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 33 statements into 3 equivalence classes. [2025-02-08 01:14:00,878 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 33 of 33 statements. [2025-02-08 01:14:00,878 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-08 01:14:00,878 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:01,053 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:14:01,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:01,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679695233] [2025-02-08 01:14:01,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679695233] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:14:01,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622141690] [2025-02-08 01:14:01,054 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:14:01,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:14:01,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:14:01,056 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 01:14:01,056 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 01:14:01,105 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 33 statements into 3 equivalence classes. [2025-02-08 01:14:01,123 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 33 of 33 statements. [2025-02-08 01:14:01,124 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-08 01:14:01,124 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:01,125 INFO L256 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 01:14:01,125 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:14:01,215 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:14:01,215 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:14:01,265 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:14:01,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622141690] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 01:14:01,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 01:14:01,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2025-02-08 01:14:01,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164859049] [2025-02-08 01:14:01,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:14:01,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:14:01,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:01,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:14:01,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2025-02-08 01:14:01,267 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2025-02-08 01:14:01,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 347 transitions, 7090 flow. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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 01:14:01,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:01,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2025-02-08 01:14:01,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand