./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc 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-array-int-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 779f57e464f50d458e1b66270e0c9f2866c6247d4d7f63a3096c6ac13e286657 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 04:32:53,503 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:32:53,551 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:32:53,554 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:32:53,554 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:32:53,571 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:32:53,572 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:32:53,572 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:32:53,573 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:32:53,573 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:32:53,573 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:32:53,574 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:32:53,574 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:32:53,574 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:32:53,574 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:32:53,575 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:32:53,575 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:32:53,575 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:32:53,575 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:32:53,575 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:32:53,575 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:32:53,575 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:32:53,575 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:32:53,575 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:32:53,575 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:32:53,575 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:32:53,575 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:32:53,576 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:32:53,576 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:32:53,576 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:32:53,576 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:32:53,576 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:32:53,576 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:32:53,576 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:32:53,576 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:32:53,577 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:32:53,577 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:32:53,577 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:32:53,577 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:32:53,577 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:32:53,577 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:32:53,577 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:32:53,577 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:32:53,577 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 -> 779f57e464f50d458e1b66270e0c9f2866c6247d4d7f63a3096c6ac13e286657 [2025-02-06 04:32:53,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:32:53,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:32:53,791 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:32:53,792 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:32:53,792 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:32:53,798 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2025-02-06 04:32:55,094 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1719bcfae/a123ec74092d49c2b2c645c4ca2ee864/FLAG2d2dccfc3 [2025-02-06 04:32:55,318 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:32:55,319 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2025-02-06 04:32:55,326 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1719bcfae/a123ec74092d49c2b2c645c4ca2ee864/FLAG2d2dccfc3 [2025-02-06 04:32:55,339 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1719bcfae/a123ec74092d49c2b2c645c4ca2ee864 [2025-02-06 04:32:55,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:32:55,342 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:32:55,342 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:32:55,343 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:32:55,346 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:32:55,346 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:32:55" (1/1) ... [2025-02-06 04:32:55,348 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eed375a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:32:55, skipping insertion in model container [2025-02-06 04:32:55,348 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:32:55" (1/1) ... [2025-02-06 04:32:55,359 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:32:55,488 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-array-int-subst.wvr.c[2820,2833] [2025-02-06 04:32:55,495 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:32:55,501 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:32:55,515 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-array-int-subst.wvr.c[2820,2833] [2025-02-06 04:32:55,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:32:55,527 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:32:55,528 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:32:55 WrapperNode [2025-02-06 04:32:55,528 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:32:55,529 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:32:55,529 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:32:55,529 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:32:55,533 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:32:55" (1/1) ... [2025-02-06 04:32:55,538 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:32:55" (1/1) ... [2025-02-06 04:32:55,555 INFO L138 Inliner]: procedures = 25, calls = 35, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 256 [2025-02-06 04:32:55,556 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:32:55,556 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:32:55,556 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:32:55,556 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:32:55,562 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:32:55" (1/1) ... [2025-02-06 04:32:55,562 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:32:55" (1/1) ... [2025-02-06 04:32:55,565 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:32:55" (1/1) ... [2025-02-06 04:32:55,575 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2025-02-06 04:32:55,575 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:32:55" (1/1) ... [2025-02-06 04:32:55,575 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:32:55" (1/1) ... [2025-02-06 04:32:55,581 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:32:55" (1/1) ... [2025-02-06 04:32:55,582 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:32:55" (1/1) ... [2025-02-06 04:32:55,584 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:32:55" (1/1) ... [2025-02-06 04:32:55,584 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:32:55" (1/1) ... [2025-02-06 04:32:55,586 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:32:55,587 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:32:55,587 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:32:55,587 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:32:55,588 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:32:55" (1/1) ... [2025-02-06 04:32:55,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:32:55,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:32:55,612 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) [2025-02-06 04:32:55,615 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 [2025-02-06 04:32:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:32:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 04:32:55,632 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 04:32:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 04:32:55,632 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 04:32:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-06 04:32:55,632 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-06 04:32:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:32:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 04:32:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 04:32:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 04:32:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 04:32:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:32:55,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:32:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 04:32:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 04:32:55,633 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 04:32:55,701 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:32:55,702 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:32:55,950 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:32:55,950 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:32:56,224 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:32:56,227 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:32:56,228 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:32:56 BoogieIcfgContainer [2025-02-06 04:32:56,228 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:32:56,229 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:32:56,229 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:32:56,237 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:32:56,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:32:55" (1/3) ... [2025-02-06 04:32:56,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d846450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:32:56, skipping insertion in model container [2025-02-06 04:32:56,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:32:55" (2/3) ... [2025-02-06 04:32:56,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d846450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:32:56, skipping insertion in model container [2025-02-06 04:32:56,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:32:56" (3/3) ... [2025-02-06 04:32:56,239 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-array-int-subst.wvr.c [2025-02-06 04:32:56,251 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:32:56,252 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-array-int-subst.wvr.c that has 4 procedures, 32 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2025-02-06 04:32:56,252 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:32:56,304 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-06 04:32:56,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 40 transitions, 101 flow [2025-02-06 04:32:56,357 INFO L124 PetriNetUnfolderBase]: 9/37 cut-off events. [2025-02-06 04:32:56,360 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 04:32:56,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 37 events. 9/37 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2025-02-06 04:32:56,365 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 40 transitions, 101 flow [2025-02-06 04:32:56,368 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 36 transitions, 90 flow [2025-02-06 04:32:56,375 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:32:56,385 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;@15f10530, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:32:56,386 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-06 04:32:56,399 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:32:56,399 INFO L124 PetriNetUnfolderBase]: 9/35 cut-off events. [2025-02-06 04:32:56,399 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 04:32:56,400 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:32:56,400 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:32:56,400 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)] === [2025-02-06 04:32:56,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:32:56,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1479501132, now seen corresponding path program 1 times [2025-02-06 04:32:56,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:32:56,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578683490] [2025-02-06 04:32:56,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:32:56,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:32:56,471 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 04:32:56,534 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 04:32:56,534 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:32:56,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:32:57,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:32:57,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:32:57,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578683490] [2025-02-06 04:32:57,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578683490] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:32:57,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:32:57,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 04:32:57,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991065575] [2025-02-06 04:32:57,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:32:57,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 04:32:57,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:32:57,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 04:32:57,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-06 04:32:57,302 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2025-02-06 04:32:57,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 90 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2025-02-06 04:32:57,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:32:57,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2025-02-06 04:32:57,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:32:58,022 INFO L124 PetriNetUnfolderBase]: 2153/3087 cut-off events. [2025-02-06 04:32:58,023 INFO L125 PetriNetUnfolderBase]: For 237/237 co-relation queries the response was YES. [2025-02-06 04:32:58,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6189 conditions, 3087 events. 2153/3087 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 14465 event pairs, 208 based on Foata normal form. 1/2624 useless extension candidates. Maximal degree in co-relation 3509. Up to 1010 conditions per place. [2025-02-06 04:32:58,044 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 101 selfloop transitions, 16 changer transitions 1/122 dead transitions. [2025-02-06 04:32:58,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 122 transitions, 546 flow [2025-02-06 04:32:58,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 04:32:58,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 04:32:58,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2025-02-06 04:32:58,054 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4725 [2025-02-06 04:32:58,055 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 90 flow. Second operand 10 states and 189 transitions. [2025-02-06 04:32:58,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 122 transitions, 546 flow [2025-02-06 04:32:58,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 122 transitions, 502 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-02-06 04:32:58,069 INFO L231 Difference]: Finished difference. Result has 44 places, 52 transitions, 178 flow [2025-02-06 04:32:58,070 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=178, PETRI_PLACES=44, PETRI_TRANSITIONS=52} [2025-02-06 04:32:58,072 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2025-02-06 04:32:58,073 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 52 transitions, 178 flow [2025-02-06 04:32:58,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2025-02-06 04:32:58,073 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:32:58,073 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:32:58,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:32:58,073 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)] === [2025-02-06 04:32:58,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:32:58,074 INFO L85 PathProgramCache]: Analyzing trace with hash 609921550, now seen corresponding path program 2 times [2025-02-06 04:32:58,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:32:58,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949974411] [2025-02-06 04:32:58,074 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:32:58,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:32:58,096 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 1 equivalence classes. [2025-02-06 04:32:58,118 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 04:32:58,119 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:32:58,119 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:32:58,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:32:58,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:32:58,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949974411] [2025-02-06 04:32:58,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949974411] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:32:58,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:32:58,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 04:32:58,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959430423] [2025-02-06 04:32:58,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:32:58,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 04:32:58,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:32:58,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 04:32:58,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-06 04:32:58,494 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2025-02-06 04:32:58,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 52 transitions, 178 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2025-02-06 04:32:58,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:32:58,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2025-02-06 04:32:58,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:32:58,979 INFO L124 PetriNetUnfolderBase]: 2330/3393 cut-off events. [2025-02-06 04:32:58,980 INFO L125 PetriNetUnfolderBase]: For 413/413 co-relation queries the response was YES. [2025-02-06 04:32:58,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7317 conditions, 3393 events. 2330/3393 cut-off events. For 413/413 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 16425 event pairs, 223 based on Foata normal form. 1/3223 useless extension candidates. Maximal degree in co-relation 4838. Up to 1010 conditions per place. [2025-02-06 04:32:58,992 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 103 selfloop transitions, 18 changer transitions 1/126 dead transitions. [2025-02-06 04:32:58,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 126 transitions, 599 flow [2025-02-06 04:32:58,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 04:32:58,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 04:32:58,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2025-02-06 04:32:58,994 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4775 [2025-02-06 04:32:58,994 INFO L175 Difference]: Start difference. First operand has 44 places, 52 transitions, 178 flow. Second operand 10 states and 191 transitions. [2025-02-06 04:32:58,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 126 transitions, 599 flow [2025-02-06 04:32:58,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 126 transitions, 593 flow, removed 3 selfloop flow, removed 0 redundant places. [2025-02-06 04:32:58,997 INFO L231 Difference]: Finished difference. Result has 55 places, 56 transitions, 242 flow [2025-02-06 04:32:58,997 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=242, PETRI_PLACES=55, PETRI_TRANSITIONS=56} [2025-02-06 04:32:58,997 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 18 predicate places. [2025-02-06 04:32:58,997 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 56 transitions, 242 flow [2025-02-06 04:32:58,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2025-02-06 04:32:58,998 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:32:58,998 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] [2025-02-06 04:32:58,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 04:32:58,998 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)] === [2025-02-06 04:32:58,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:32:58,998 INFO L85 PathProgramCache]: Analyzing trace with hash -387340493, now seen corresponding path program 1 times [2025-02-06 04:32:58,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:32:58,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547332795] [2025-02-06 04:32:58,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:32:58,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:32:59,006 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 04:32:59,014 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 04:32:59,015 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:32:59,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:32:59,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:32:59,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:32:59,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547332795] [2025-02-06 04:32:59,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547332795] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:32:59,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498956903] [2025-02-06 04:32:59,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:32:59,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:32:59,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:32:59,156 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) [2025-02-06 04:32:59,157 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 [2025-02-06 04:32:59,212 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 04:32:59,235 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 04:32:59,236 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:32:59,236 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:32:59,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 04:32:59,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:32:59,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:32:59,324 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:32:59,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:32:59,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498956903] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:32:59,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:32:59,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2025-02-06 04:32:59,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464354310] [2025-02-06 04:32:59,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:32:59,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:32:59,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:32:59,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:32:59,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2025-02-06 04:32:59,413 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2025-02-06 04:32:59,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 56 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 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) [2025-02-06 04:32:59,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:32:59,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2025-02-06 04:32:59,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:32:59,964 INFO L124 PetriNetUnfolderBase]: 4203/6070 cut-off events. [2025-02-06 04:32:59,964 INFO L125 PetriNetUnfolderBase]: For 2208/2208 co-relation queries the response was YES. [2025-02-06 04:32:59,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13963 conditions, 6070 events. 4203/6070 cut-off events. For 2208/2208 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 31888 event pairs, 2151 based on Foata normal form. 1/5776 useless extension candidates. Maximal degree in co-relation 11564. Up to 3210 conditions per place. [2025-02-06 04:32:59,991 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 123 selfloop transitions, 8 changer transitions 4/139 dead transitions. [2025-02-06 04:32:59,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 139 transitions, 773 flow [2025-02-06 04:32:59,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:32:59,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:32:59,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2025-02-06 04:32:59,993 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.575 [2025-02-06 04:32:59,993 INFO L175 Difference]: Start difference. First operand has 55 places, 56 transitions, 242 flow. Second operand 7 states and 161 transitions. [2025-02-06 04:32:59,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 139 transitions, 773 flow [2025-02-06 04:33:00,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 139 transitions, 748 flow, removed 1 selfloop flow, removed 5 redundant places. [2025-02-06 04:33:00,006 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 269 flow [2025-02-06 04:33:00,006 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=269, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2025-02-06 04:33:00,007 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 22 predicate places. [2025-02-06 04:33:00,007 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 269 flow [2025-02-06 04:33:00,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 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) [2025-02-06 04:33:00,007 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:00,007 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] [2025-02-06 04:33:00,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 04:33:00,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:33:00,213 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)] === [2025-02-06 04:33:00,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:00,214 INFO L85 PathProgramCache]: Analyzing trace with hash -688452346, now seen corresponding path program 1 times [2025-02-06 04:33:00,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:00,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923097054] [2025-02-06 04:33:00,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:33:00,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:00,224 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 04:33:00,232 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 04:33:00,232 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:33:00,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:00,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:33:00,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:00,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923097054] [2025-02-06 04:33:00,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923097054] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:00,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656955762] [2025-02-06 04:33:00,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:33:00,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:33:00,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:33:00,342 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) [2025-02-06 04:33:00,343 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 [2025-02-06 04:33:00,395 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 04:33:00,419 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 04:33:00,419 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:33:00,419 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:00,420 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 04:33:00,421 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:33:00,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:33:00,490 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:33:00,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:33:00,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656955762] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:00,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:33:00,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2025-02-06 04:33:00,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289634368] [2025-02-06 04:33:00,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:00,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:33:00,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:00,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:33:00,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2025-02-06 04:33:00,639 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2025-02-06 04:33:00,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 269 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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) [2025-02-06 04:33:00,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:00,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2025-02-06 04:33:00,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:01,469 INFO L124 PetriNetUnfolderBase]: 5160/7467 cut-off events. [2025-02-06 04:33:01,469 INFO L125 PetriNetUnfolderBase]: For 2991/2991 co-relation queries the response was YES. [2025-02-06 04:33:01,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17820 conditions, 7467 events. 5160/7467 cut-off events. For 2991/2991 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 40596 event pairs, 2730 based on Foata normal form. 1/7446 useless extension candidates. Maximal degree in co-relation 15354. Up to 3503 conditions per place. [2025-02-06 04:33:01,503 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 117 selfloop transitions, 8 changer transitions 4/133 dead transitions. [2025-02-06 04:33:01,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 133 transitions, 754 flow [2025-02-06 04:33:01,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:33:01,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:33:01,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2025-02-06 04:33:01,504 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6416666666666667 [2025-02-06 04:33:01,504 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 269 flow. Second operand 6 states and 154 transitions. [2025-02-06 04:33:01,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 133 transitions, 754 flow [2025-02-06 04:33:01,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 133 transitions, 743 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-02-06 04:33:01,511 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 293 flow [2025-02-06 04:33:01,511 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=293, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2025-02-06 04:33:01,511 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 27 predicate places. [2025-02-06 04:33:01,512 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 293 flow [2025-02-06 04:33:01,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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) [2025-02-06 04:33:01,512 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:01,512 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] [2025-02-06 04:33:01,518 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 [2025-02-06 04:33:01,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:33:01,713 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)] === [2025-02-06 04:33:01,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:01,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1473557147, now seen corresponding path program 1 times [2025-02-06 04:33:01,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:01,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072709204] [2025-02-06 04:33:01,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:33:01,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:01,727 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 04:33:01,734 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 04:33:01,735 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:33:01,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:01,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:33:01,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:01,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072709204] [2025-02-06 04:33:01,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072709204] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:33:01,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:33:01,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:33:01,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944116765] [2025-02-06 04:33:01,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:01,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:33:01,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:01,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:33:01,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:33:01,807 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2025-02-06 04:33:01,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 293 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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) [2025-02-06 04:33:01,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:01,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2025-02-06 04:33:01,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:02,219 INFO L124 PetriNetUnfolderBase]: 3675/5573 cut-off events. [2025-02-06 04:33:02,219 INFO L125 PetriNetUnfolderBase]: For 3254/3254 co-relation queries the response was YES. [2025-02-06 04:33:02,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13705 conditions, 5573 events. 3675/5573 cut-off events. For 3254/3254 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 31398 event pairs, 1536 based on Foata normal form. 230/5767 useless extension candidates. Maximal degree in co-relation 12892. Up to 2424 conditions per place. [2025-02-06 04:33:02,245 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 81 selfloop transitions, 15 changer transitions 0/100 dead transitions. [2025-02-06 04:33:02,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 100 transitions, 609 flow [2025-02-06 04:33:02,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:33:02,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:33:02,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2025-02-06 04:33:02,246 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2025-02-06 04:33:02,246 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 293 flow. Second operand 6 states and 116 transitions. [2025-02-06 04:33:02,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 100 transitions, 609 flow [2025-02-06 04:33:02,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 100 transitions, 594 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-02-06 04:33:02,255 INFO L231 Difference]: Finished difference. Result has 69 places, 62 transitions, 329 flow [2025-02-06 04:33:02,256 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=329, PETRI_PLACES=69, PETRI_TRANSITIONS=62} [2025-02-06 04:33:02,257 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 32 predicate places. [2025-02-06 04:33:02,257 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 62 transitions, 329 flow [2025-02-06 04:33:02,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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) [2025-02-06 04:33:02,258 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:02,258 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] [2025-02-06 04:33:02,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 04:33:02,258 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)] === [2025-02-06 04:33:02,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:02,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1298262384, now seen corresponding path program 1 times [2025-02-06 04:33:02,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:02,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998951331] [2025-02-06 04:33:02,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:33:02,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:02,268 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 04:33:02,288 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 04:33:02,291 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:33:02,291 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:02,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:33:02,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:02,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998951331] [2025-02-06 04:33:02,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998951331] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:02,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688349857] [2025-02-06 04:33:02,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:33:02,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:33:02,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:33:02,550 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) [2025-02-06 04:33:02,554 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 [2025-02-06 04:33:02,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 04:33:02,633 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 04:33:02,633 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:33:02,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:02,634 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-06 04:33:02,636 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:33:02,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:33:02,806 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:33:03,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:33:03,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688349857] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:03,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:33:03,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2025-02-06 04:33:03,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016987517] [2025-02-06 04:33:03,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:03,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 04:33:03,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:03,038 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 04:33:03,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2025-02-06 04:33:03,069 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2025-02-06 04:33:03,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 62 transitions, 329 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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) [2025-02-06 04:33:03,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:03,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2025-02-06 04:33:03,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:03,744 INFO L124 PetriNetUnfolderBase]: 3847/5910 cut-off events. [2025-02-06 04:33:03,744 INFO L125 PetriNetUnfolderBase]: For 4207/4207 co-relation queries the response was YES. [2025-02-06 04:33:03,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14936 conditions, 5910 events. 3847/5910 cut-off events. For 4207/4207 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 34644 event pairs, 518 based on Foata normal form. 1/5853 useless extension candidates. Maximal degree in co-relation 14046. Up to 3002 conditions per place. [2025-02-06 04:33:03,773 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 142 selfloop transitions, 18 changer transitions 3/167 dead transitions. [2025-02-06 04:33:03,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 167 transitions, 1026 flow [2025-02-06 04:33:03,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 04:33:03,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 04:33:03,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 224 transitions. [2025-02-06 04:33:03,775 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.509090909090909 [2025-02-06 04:33:03,775 INFO L175 Difference]: Start difference. First operand has 69 places, 62 transitions, 329 flow. Second operand 11 states and 224 transitions. [2025-02-06 04:33:03,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 167 transitions, 1026 flow [2025-02-06 04:33:03,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 167 transitions, 1006 flow, removed 5 selfloop flow, removed 2 redundant places. [2025-02-06 04:33:03,785 INFO L231 Difference]: Finished difference. Result has 80 places, 68 transitions, 405 flow [2025-02-06 04:33:03,785 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=405, PETRI_PLACES=80, PETRI_TRANSITIONS=68} [2025-02-06 04:33:03,786 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 43 predicate places. [2025-02-06 04:33:03,786 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 68 transitions, 405 flow [2025-02-06 04:33:03,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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) [2025-02-06 04:33:03,786 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:03,786 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] [2025-02-06 04:33:03,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 04:33:03,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:33:03,987 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)] === [2025-02-06 04:33:03,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:03,988 INFO L85 PathProgramCache]: Analyzing trace with hash 96138369, now seen corresponding path program 1 times [2025-02-06 04:33:03,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:03,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199326853] [2025-02-06 04:33:03,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:33:03,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:03,994 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 04:33:03,998 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 04:33:03,999 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:33:03,999 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:04,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:33:04,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:04,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199326853] [2025-02-06 04:33:04,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199326853] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:33:04,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:33:04,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:33:04,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686470825] [2025-02-06 04:33:04,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:04,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:33:04,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:04,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:33:04,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:33:04,070 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2025-02-06 04:33:04,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 68 transitions, 405 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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) [2025-02-06 04:33:04,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:04,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2025-02-06 04:33:04,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:04,378 INFO L124 PetriNetUnfolderBase]: 2596/4115 cut-off events. [2025-02-06 04:33:04,378 INFO L125 PetriNetUnfolderBase]: For 4418/4418 co-relation queries the response was YES. [2025-02-06 04:33:04,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10994 conditions, 4115 events. 2596/4115 cut-off events. For 4418/4418 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 23584 event pairs, 1189 based on Foata normal form. 198/4304 useless extension candidates. Maximal degree in co-relation 10485. Up to 2017 conditions per place. [2025-02-06 04:33:04,390 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 85 selfloop transitions, 11 changer transitions 7/107 dead transitions. [2025-02-06 04:33:04,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 107 transitions, 737 flow [2025-02-06 04:33:04,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:33:04,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:33:04,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2025-02-06 04:33:04,391 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5041666666666667 [2025-02-06 04:33:04,392 INFO L175 Difference]: Start difference. First operand has 80 places, 68 transitions, 405 flow. Second operand 6 states and 121 transitions. [2025-02-06 04:33:04,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 107 transitions, 737 flow [2025-02-06 04:33:04,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 107 transitions, 682 flow, removed 5 selfloop flow, removed 9 redundant places. [2025-02-06 04:33:04,402 INFO L231 Difference]: Finished difference. Result has 79 places, 60 transitions, 328 flow [2025-02-06 04:33:04,402 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=328, PETRI_PLACES=79, PETRI_TRANSITIONS=60} [2025-02-06 04:33:04,403 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 42 predicate places. [2025-02-06 04:33:04,403 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 60 transitions, 328 flow [2025-02-06 04:33:04,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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) [2025-02-06 04:33:04,404 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:04,404 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] [2025-02-06 04:33:04,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 04:33:04,404 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)] === [2025-02-06 04:33:04,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:04,404 INFO L85 PathProgramCache]: Analyzing trace with hash -36680010, now seen corresponding path program 2 times [2025-02-06 04:33:04,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:04,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439675781] [2025-02-06 04:33:04,405 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:33:04,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:04,411 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-02-06 04:33:04,433 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 25 statements. [2025-02-06 04:33:04,434 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:33:04,434 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:04,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:33:04,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:04,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439675781] [2025-02-06 04:33:04,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439675781] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:33:04,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:33:04,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 04:33:04,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471281424] [2025-02-06 04:33:04,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:04,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:33:04,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:04,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:33:04,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-06 04:33:04,687 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2025-02-06 04:33:04,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 60 transitions, 328 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 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) [2025-02-06 04:33:04,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:04,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2025-02-06 04:33:04,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:05,112 INFO L124 PetriNetUnfolderBase]: 2014/3156 cut-off events. [2025-02-06 04:33:05,112 INFO L125 PetriNetUnfolderBase]: For 2861/2861 co-relation queries the response was YES. [2025-02-06 04:33:05,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8161 conditions, 3156 events. 2014/3156 cut-off events. For 2861/2861 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 16990 event pairs, 300 based on Foata normal form. 1/3017 useless extension candidates. Maximal degree in co-relation 8114. Up to 2416 conditions per place. [2025-02-06 04:33:05,126 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 57 selfloop transitions, 8 changer transitions 37/106 dead transitions. [2025-02-06 04:33:05,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 106 transitions, 690 flow [2025-02-06 04:33:05,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:33:05,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:33:05,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2025-02-06 04:33:05,128 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2025-02-06 04:33:05,128 INFO L175 Difference]: Start difference. First operand has 79 places, 60 transitions, 328 flow. Second operand 9 states and 147 transitions. [2025-02-06 04:33:05,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 106 transitions, 690 flow [2025-02-06 04:33:05,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 106 transitions, 674 flow, removed 5 selfloop flow, removed 6 redundant places. [2025-02-06 04:33:05,137 INFO L231 Difference]: Finished difference. Result has 75 places, 56 transitions, 292 flow [2025-02-06 04:33:05,137 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=292, PETRI_PLACES=75, PETRI_TRANSITIONS=56} [2025-02-06 04:33:05,138 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 38 predicate places. [2025-02-06 04:33:05,138 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 56 transitions, 292 flow [2025-02-06 04:33:05,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 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) [2025-02-06 04:33:05,138 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:05,138 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] [2025-02-06 04:33:05,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 04:33:05,139 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)] === [2025-02-06 04:33:05,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:05,139 INFO L85 PathProgramCache]: Analyzing trace with hash 720924499, now seen corresponding path program 1 times [2025-02-06 04:33:05,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:05,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802562716] [2025-02-06 04:33:05,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:33:05,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:05,145 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 04:33:05,151 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 04:33:05,151 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:33:05,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:05,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:33:05,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:05,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802562716] [2025-02-06 04:33:05,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802562716] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:05,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754204821] [2025-02-06 04:33:05,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:33:05,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:33:05,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:33:05,251 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) [2025-02-06 04:33:05,253 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 [2025-02-06 04:33:05,300 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 04:33:05,319 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 04:33:05,319 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:33:05,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:05,321 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 04:33:05,321 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:33:05,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:33:05,374 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:33:05,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:33:05,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754204821] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:05,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:33:05,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 6] total 12 [2025-02-06 04:33:05,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88209143] [2025-02-06 04:33:05,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:05,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:33:05,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:05,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:33:05,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2025-02-06 04:33:05,445 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2025-02-06 04:33:05,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 56 transitions, 292 flow. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:33:05,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:05,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2025-02-06 04:33:05,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:05,891 INFO L124 PetriNetUnfolderBase]: 2693/3955 cut-off events. [2025-02-06 04:33:05,891 INFO L125 PetriNetUnfolderBase]: For 3402/3402 co-relation queries the response was YES. [2025-02-06 04:33:05,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10306 conditions, 3955 events. 2693/3955 cut-off events. For 3402/3402 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 20101 event pairs, 886 based on Foata normal form. 0/3654 useless extension candidates. Maximal degree in co-relation 10262. Up to 1062 conditions per place. [2025-02-06 04:33:05,907 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 136 selfloop transitions, 13 changer transitions 10/162 dead transitions. [2025-02-06 04:33:05,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 162 transitions, 995 flow [2025-02-06 04:33:05,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:33:05,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:33:05,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 197 transitions. [2025-02-06 04:33:05,909 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5472222222222223 [2025-02-06 04:33:05,909 INFO L175 Difference]: Start difference. First operand has 75 places, 56 transitions, 292 flow. Second operand 9 states and 197 transitions. [2025-02-06 04:33:05,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 162 transitions, 995 flow [2025-02-06 04:33:05,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 162 transitions, 943 flow, removed 10 selfloop flow, removed 7 redundant places. [2025-02-06 04:33:05,916 INFO L231 Difference]: Finished difference. Result has 69 places, 61 transitions, 307 flow [2025-02-06 04:33:05,916 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=307, PETRI_PLACES=69, PETRI_TRANSITIONS=61} [2025-02-06 04:33:05,917 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 32 predicate places. [2025-02-06 04:33:05,917 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 61 transitions, 307 flow [2025-02-06 04:33:05,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:33:05,917 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:05,917 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:33:05,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 04:33:06,121 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,SelfDestructingSolverStorable8 [2025-02-06 04:33:06,121 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)] === [2025-02-06 04:33:06,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:06,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1319929167, now seen corresponding path program 1 times [2025-02-06 04:33:06,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:06,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020351093] [2025-02-06 04:33:06,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:33:06,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:06,128 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 04:33:06,132 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 04:33:06,132 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:33:06,132 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:06,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:33:06,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:06,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020351093] [2025-02-06 04:33:06,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020351093] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:33:06,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:33:06,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:33:06,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895765149] [2025-02-06 04:33:06,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:06,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:33:06,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:06,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:33:06,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:33:06,187 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2025-02-06 04:33:06,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 61 transitions, 307 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 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) [2025-02-06 04:33:06,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:06,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2025-02-06 04:33:06,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:06,434 INFO L124 PetriNetUnfolderBase]: 1959/2994 cut-off events. [2025-02-06 04:33:06,434 INFO L125 PetriNetUnfolderBase]: For 2751/2789 co-relation queries the response was YES. [2025-02-06 04:33:06,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7920 conditions, 2994 events. 1959/2994 cut-off events. For 2751/2789 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 15014 event pairs, 1162 based on Foata normal form. 38/2876 useless extension candidates. Maximal degree in co-relation 6777. Up to 2433 conditions per place. [2025-02-06 04:33:06,443 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 44 selfloop transitions, 2 changer transitions 42/92 dead transitions. [2025-02-06 04:33:06,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 92 transitions, 593 flow [2025-02-06 04:33:06,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:33:06,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:33:06,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2025-02-06 04:33:06,444 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.475 [2025-02-06 04:33:06,444 INFO L175 Difference]: Start difference. First operand has 69 places, 61 transitions, 307 flow. Second operand 6 states and 114 transitions. [2025-02-06 04:33:06,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 92 transitions, 593 flow [2025-02-06 04:33:06,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 92 transitions, 574 flow, removed 3 selfloop flow, removed 5 redundant places. [2025-02-06 04:33:06,448 INFO L231 Difference]: Finished difference. Result has 68 places, 50 transitions, 219 flow [2025-02-06 04:33:06,448 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=219, PETRI_PLACES=68, PETRI_TRANSITIONS=50} [2025-02-06 04:33:06,448 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 31 predicate places. [2025-02-06 04:33:06,449 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 50 transitions, 219 flow [2025-02-06 04:33:06,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 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) [2025-02-06 04:33:06,449 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:06,449 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] [2025-02-06 04:33:06,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 04:33:06,449 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)] === [2025-02-06 04:33:06,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:06,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1430690106, now seen corresponding path program 1 times [2025-02-06 04:33:06,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:06,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346588655] [2025-02-06 04:33:06,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:33:06,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:06,455 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 04:33:06,459 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 04:33:06,459 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:33:06,459 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:06,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:33:06,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:06,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346588655] [2025-02-06 04:33:06,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346588655] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:33:06,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:33:06,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:33:06,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590297745] [2025-02-06 04:33:06,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:06,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:33:06,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:06,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:33:06,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:33:06,513 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2025-02-06 04:33:06,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 50 transitions, 219 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 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) [2025-02-06 04:33:06,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:06,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2025-02-06 04:33:06,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:06,684 INFO L124 PetriNetUnfolderBase]: 1394/2089 cut-off events. [2025-02-06 04:33:06,685 INFO L125 PetriNetUnfolderBase]: For 1468/1513 co-relation queries the response was YES. [2025-02-06 04:33:06,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5324 conditions, 2089 events. 1394/2089 cut-off events. For 1468/1513 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 9279 event pairs, 748 based on Foata normal form. 42/2020 useless extension candidates. Maximal degree in co-relation 5298. Up to 1557 conditions per place. [2025-02-06 04:33:06,691 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 35 selfloop transitions, 2 changer transitions 39/80 dead transitions. [2025-02-06 04:33:06,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 80 transitions, 472 flow [2025-02-06 04:33:06,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:33:06,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:33:06,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2025-02-06 04:33:06,693 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4625 [2025-02-06 04:33:06,693 INFO L175 Difference]: Start difference. First operand has 68 places, 50 transitions, 219 flow. Second operand 6 states and 111 transitions. [2025-02-06 04:33:06,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 80 transitions, 472 flow [2025-02-06 04:33:06,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 80 transitions, 432 flow, removed 18 selfloop flow, removed 7 redundant places. [2025-02-06 04:33:06,695 INFO L231 Difference]: Finished difference. Result has 56 places, 41 transitions, 147 flow [2025-02-06 04:33:06,695 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=147, PETRI_PLACES=56, PETRI_TRANSITIONS=41} [2025-02-06 04:33:06,696 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 19 predicate places. [2025-02-06 04:33:06,696 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 41 transitions, 147 flow [2025-02-06 04:33:06,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 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) [2025-02-06 04:33:06,696 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:06,696 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] [2025-02-06 04:33:06,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 04:33:06,696 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)] === [2025-02-06 04:33:06,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:06,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1763652228, now seen corresponding path program 1 times [2025-02-06 04:33:06,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:06,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106654754] [2025-02-06 04:33:06,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:33:06,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:06,703 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-06 04:33:06,712 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 04:33:06,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:33:06,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:06,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:33:06,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:06,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106654754] [2025-02-06 04:33:06,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106654754] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:33:06,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:33:06,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:33:06,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946884627] [2025-02-06 04:33:06,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:06,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:33:06,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:06,782 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:33:06,782 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:33:06,784 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2025-02-06 04:33:06,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 41 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 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) [2025-02-06 04:33:06,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:06,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2025-02-06 04:33:06,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:06,937 INFO L124 PetriNetUnfolderBase]: 1207/1714 cut-off events. [2025-02-06 04:33:06,937 INFO L125 PetriNetUnfolderBase]: For 760/807 co-relation queries the response was YES. [2025-02-06 04:33:06,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4155 conditions, 1714 events. 1207/1714 cut-off events. For 760/807 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 7150 event pairs, 365 based on Foata normal form. 1/1617 useless extension candidates. Maximal degree in co-relation 4140. Up to 839 conditions per place. [2025-02-06 04:33:06,942 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 50 selfloop transitions, 3 changer transitions 22/79 dead transitions. [2025-02-06 04:33:06,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 79 transitions, 412 flow [2025-02-06 04:33:06,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:33:06,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:33:06,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2025-02-06 04:33:06,943 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.59375 [2025-02-06 04:33:06,944 INFO L175 Difference]: Start difference. First operand has 56 places, 41 transitions, 147 flow. Second operand 4 states and 95 transitions. [2025-02-06 04:33:06,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 79 transitions, 412 flow [2025-02-06 04:33:06,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 79 transitions, 381 flow, removed 12 selfloop flow, removed 7 redundant places. [2025-02-06 04:33:06,946 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 134 flow [2025-02-06 04:33:06,946 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2025-02-06 04:33:06,947 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 8 predicate places. [2025-02-06 04:33:06,948 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 134 flow [2025-02-06 04:33:06,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 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) [2025-02-06 04:33:06,948 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:06,948 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:33:06,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-06 04:33:06,948 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)] === [2025-02-06 04:33:06,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:06,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1118696691, now seen corresponding path program 1 times [2025-02-06 04:33:06,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:06,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263985790] [2025-02-06 04:33:06,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:33:06,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:06,955 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-06 04:33:06,969 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-06 04:33:06,970 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:33:06,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:07,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:33:07,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:07,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263985790] [2025-02-06 04:33:07,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263985790] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:07,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330182656] [2025-02-06 04:33:07,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:33:07,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:33:07,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:33:07,160 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) [2025-02-06 04:33:07,164 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 [2025-02-06 04:33:07,219 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-06 04:33:07,249 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-06 04:33:07,249 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:33:07,249 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:07,252 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 04:33:07,253 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:33:07,442 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:33:07,442 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:33:07,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:33:07,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330182656] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:07,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:33:07,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 19 [2025-02-06 04:33:07,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701834293] [2025-02-06 04:33:07,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:07,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 04:33:07,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:07,721 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 04:33:07,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2025-02-06 04:33:07,764 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2025-02-06 04:33:07,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 134 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 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) [2025-02-06 04:33:07,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:07,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2025-02-06 04:33:07,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:08,278 INFO L124 PetriNetUnfolderBase]: 2314/3374 cut-off events. [2025-02-06 04:33:08,278 INFO L125 PetriNetUnfolderBase]: For 2273/2389 co-relation queries the response was YES. [2025-02-06 04:33:08,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8313 conditions, 3374 events. 2314/3374 cut-off events. For 2273/2389 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 16437 event pairs, 359 based on Foata normal form. 1/3162 useless extension candidates. Maximal degree in co-relation 8293. Up to 1049 conditions per place. [2025-02-06 04:33:08,290 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 111 selfloop transitions, 18 changer transitions 1/134 dead transitions. [2025-02-06 04:33:08,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 134 transitions, 685 flow [2025-02-06 04:33:08,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 04:33:08,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 04:33:08,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2025-02-06 04:33:08,293 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45227272727272727 [2025-02-06 04:33:08,293 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 134 flow. Second operand 11 states and 199 transitions. [2025-02-06 04:33:08,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 134 transitions, 685 flow [2025-02-06 04:33:08,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 134 transitions, 655 flow, removed 3 selfloop flow, removed 3 redundant places. [2025-02-06 04:33:08,297 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 268 flow [2025-02-06 04:33:08,297 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=268, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2025-02-06 04:33:08,298 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 20 predicate places. [2025-02-06 04:33:08,298 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 268 flow [2025-02-06 04:33:08,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 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) [2025-02-06 04:33:08,298 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:08,298 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] [2025-02-06 04:33:08,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 04:33:08,502 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 [2025-02-06 04:33:08,502 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)] === [2025-02-06 04:33:08,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:08,503 INFO L85 PathProgramCache]: Analyzing trace with hash 15273967, now seen corresponding path program 2 times [2025-02-06 04:33:08,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:08,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525939820] [2025-02-06 04:33:08,503 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:33:08,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:08,512 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-02-06 04:33:08,531 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 28 statements. [2025-02-06 04:33:08,531 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:33:08,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:08,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:33:08,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:08,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525939820] [2025-02-06 04:33:08,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525939820] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:33:08,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:33:08,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:33:08,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248663949] [2025-02-06 04:33:08,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:08,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 04:33:08,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:08,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 04:33:08,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 04:33:08,792 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2025-02-06 04:33:08,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 268 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 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) [2025-02-06 04:33:08,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:08,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2025-02-06 04:33:08,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:09,275 INFO L124 PetriNetUnfolderBase]: 3018/4385 cut-off events. [2025-02-06 04:33:09,275 INFO L125 PetriNetUnfolderBase]: For 3575/3731 co-relation queries the response was YES. [2025-02-06 04:33:09,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11425 conditions, 4385 events. 3018/4385 cut-off events. For 3575/3731 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 22332 event pairs, 454 based on Foata normal form. 1/4369 useless extension candidates. Maximal degree in co-relation 11396. Up to 1730 conditions per place. [2025-02-06 04:33:09,287 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 111 selfloop transitions, 20 changer transitions 1/136 dead transitions. [2025-02-06 04:33:09,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 136 transitions, 795 flow [2025-02-06 04:33:09,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 04:33:09,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 04:33:09,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2025-02-06 04:33:09,291 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2025-02-06 04:33:09,291 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 268 flow. Second operand 11 states and 196 transitions. [2025-02-06 04:33:09,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 136 transitions, 795 flow [2025-02-06 04:33:09,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 136 transitions, 788 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-02-06 04:33:09,295 INFO L231 Difference]: Finished difference. Result has 68 places, 61 transitions, 373 flow [2025-02-06 04:33:09,295 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=373, PETRI_PLACES=68, PETRI_TRANSITIONS=61} [2025-02-06 04:33:09,295 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 31 predicate places. [2025-02-06 04:33:09,295 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 61 transitions, 373 flow [2025-02-06 04:33:09,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 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) [2025-02-06 04:33:09,296 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:09,296 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] [2025-02-06 04:33:09,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-06 04:33:09,296 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)] === [2025-02-06 04:33:09,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:09,296 INFO L85 PathProgramCache]: Analyzing trace with hash -717167597, now seen corresponding path program 3 times [2025-02-06 04:33:09,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:09,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471138320] [2025-02-06 04:33:09,297 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:33:09,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:09,303 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 2 equivalence classes. [2025-02-06 04:33:09,311 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 24 of 28 statements. [2025-02-06 04:33:09,311 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 04:33:09,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:09,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:33:09,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:09,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471138320] [2025-02-06 04:33:09,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471138320] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:33:09,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:33:09,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:33:09,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240541289] [2025-02-06 04:33:09,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:09,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 04:33:09,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:09,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 04:33:09,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-06 04:33:09,475 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2025-02-06 04:33:09,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 61 transitions, 373 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:33:09,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:09,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2025-02-06 04:33:09,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:09,880 INFO L124 PetriNetUnfolderBase]: 3508/5108 cut-off events. [2025-02-06 04:33:09,881 INFO L125 PetriNetUnfolderBase]: For 8099/8273 co-relation queries the response was YES. [2025-02-06 04:33:09,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14406 conditions, 5108 events. 3508/5108 cut-off events. For 8099/8273 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 26527 event pairs, 685 based on Foata normal form. 1/5092 useless extension candidates. Maximal degree in co-relation 14373. Up to 1715 conditions per place. [2025-02-06 04:33:09,898 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 115 selfloop transitions, 29 changer transitions 1/149 dead transitions. [2025-02-06 04:33:09,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 149 transitions, 997 flow [2025-02-06 04:33:09,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 04:33:09,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 04:33:09,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2025-02-06 04:33:09,900 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2025-02-06 04:33:09,900 INFO L175 Difference]: Start difference. First operand has 68 places, 61 transitions, 373 flow. Second operand 11 states and 200 transitions. [2025-02-06 04:33:09,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 149 transitions, 997 flow [2025-02-06 04:33:09,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 149 transitions, 962 flow, removed 7 selfloop flow, removed 6 redundant places. [2025-02-06 04:33:09,908 INFO L231 Difference]: Finished difference. Result has 76 places, 71 transitions, 537 flow [2025-02-06 04:33:09,909 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=537, PETRI_PLACES=76, PETRI_TRANSITIONS=71} [2025-02-06 04:33:09,909 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 39 predicate places. [2025-02-06 04:33:09,909 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 71 transitions, 537 flow [2025-02-06 04:33:09,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:33:09,909 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:09,909 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] [2025-02-06 04:33:09,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-06 04:33:09,910 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)] === [2025-02-06 04:33:09,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:09,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1748381749, now seen corresponding path program 4 times [2025-02-06 04:33:09,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:09,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936240650] [2025-02-06 04:33:09,910 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:33:09,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:09,918 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-02-06 04:33:09,920 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 23 of 28 statements. [2025-02-06 04:33:09,921 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-06 04:33:09,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:10,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:33:10,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:10,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936240650] [2025-02-06 04:33:10,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936240650] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:10,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812139268] [2025-02-06 04:33:10,019 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:33:10,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:33:10,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:33:10,021 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) [2025-02-06 04:33:10,022 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 [2025-02-06 04:33:10,068 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-02-06 04:33:10,077 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 23 of 28 statements. [2025-02-06 04:33:10,078 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-06 04:33:10,078 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:10,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 04:33:10,079 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:33:10,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:33:10,174 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:33:10,354 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:33:10,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812139268] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:33:10,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:33:10,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2025-02-06 04:33:10,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736305526] [2025-02-06 04:33:10,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:33:10,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-06 04:33:10,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:10,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-06 04:33:10,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2025-02-06 04:33:10,414 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2025-02-06 04:33:10,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 71 transitions, 537 flow. Second operand has 17 states, 17 states have (on average 8.176470588235293) internal successors, (139), 17 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:33:10,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:10,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2025-02-06 04:33:10,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:11,345 INFO L124 PetriNetUnfolderBase]: 9910/13792 cut-off events. [2025-02-06 04:33:11,345 INFO L125 PetriNetUnfolderBase]: For 32951/32951 co-relation queries the response was YES. [2025-02-06 04:33:11,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41658 conditions, 13792 events. 9910/13792 cut-off events. For 32951/32951 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 75016 event pairs, 1129 based on Foata normal form. 2/13081 useless extension candidates. Maximal degree in co-relation 41621. Up to 5730 conditions per place. [2025-02-06 04:33:11,411 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 168 selfloop transitions, 40 changer transitions 3/213 dead transitions. [2025-02-06 04:33:11,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 213 transitions, 1889 flow [2025-02-06 04:33:11,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:33:11,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:33:11,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2025-02-06 04:33:11,412 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2025-02-06 04:33:11,412 INFO L175 Difference]: Start difference. First operand has 76 places, 71 transitions, 537 flow. Second operand 9 states and 172 transitions. [2025-02-06 04:33:11,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 213 transitions, 1889 flow [2025-02-06 04:33:11,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 213 transitions, 1821 flow, removed 26 selfloop flow, removed 5 redundant places. [2025-02-06 04:33:11,459 INFO L231 Difference]: Finished difference. Result has 85 places, 89 transitions, 828 flow [2025-02-06 04:33:11,459 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=828, PETRI_PLACES=85, PETRI_TRANSITIONS=89} [2025-02-06 04:33:11,459 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 48 predicate places. [2025-02-06 04:33:11,460 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 89 transitions, 828 flow [2025-02-06 04:33:11,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.176470588235293) internal successors, (139), 17 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:33:11,460 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:11,460 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] [2025-02-06 04:33:11,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-06 04:33:11,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-02-06 04:33:11,661 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)] === [2025-02-06 04:33:11,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:11,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1724118621, now seen corresponding path program 5 times [2025-02-06 04:33:11,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:11,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228533514] [2025-02-06 04:33:11,665 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:33:11,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:11,671 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-02-06 04:33:11,677 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-02-06 04:33:11,678 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:33:11,678 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:11,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:33:11,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:11,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228533514] [2025-02-06 04:33:11,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228533514] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:11,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74314022] [2025-02-06 04:33:11,948 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:33:11,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:33:11,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:33:11,955 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) [2025-02-06 04:33:11,955 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 [2025-02-06 04:33:12,007 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-02-06 04:33:12,030 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-02-06 04:33:12,030 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:33:12,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:12,031 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-06 04:33:12,032 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:33:12,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:33:12,140 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:33:12,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:33:12,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74314022] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:12,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:33:12,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 8] total 20 [2025-02-06 04:33:12,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367646501] [2025-02-06 04:33:12,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:12,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 04:33:12,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:12,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 04:33:12,327 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2025-02-06 04:33:12,355 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2025-02-06 04:33:12,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 89 transitions, 828 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:33:12,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:12,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2025-02-06 04:33:12,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:13,220 INFO L124 PetriNetUnfolderBase]: 7431/10860 cut-off events. [2025-02-06 04:33:13,220 INFO L125 PetriNetUnfolderBase]: For 37708/38044 co-relation queries the response was YES. [2025-02-06 04:33:13,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37145 conditions, 10860 events. 7431/10860 cut-off events. For 37708/38044 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 64982 event pairs, 1459 based on Foata normal form. 2/10843 useless extension candidates. Maximal degree in co-relation 37103. Up to 2821 conditions per place. [2025-02-06 04:33:13,270 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 167 selfloop transitions, 37 changer transitions 1/210 dead transitions. [2025-02-06 04:33:13,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 210 transitions, 1925 flow [2025-02-06 04:33:13,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 04:33:13,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 04:33:13,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 208 transitions. [2025-02-06 04:33:13,272 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.52 [2025-02-06 04:33:13,272 INFO L175 Difference]: Start difference. First operand has 85 places, 89 transitions, 828 flow. Second operand 10 states and 208 transitions. [2025-02-06 04:33:13,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 210 transitions, 1925 flow [2025-02-06 04:33:13,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 210 transitions, 1898 flow, removed 9 selfloop flow, removed 1 redundant places. [2025-02-06 04:33:13,316 INFO L231 Difference]: Finished difference. Result has 97 places, 102 transitions, 1075 flow [2025-02-06 04:33:13,316 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1075, PETRI_PLACES=97, PETRI_TRANSITIONS=102} [2025-02-06 04:33:13,317 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 60 predicate places. [2025-02-06 04:33:13,317 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 102 transitions, 1075 flow [2025-02-06 04:33:13,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:33:13,317 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:13,317 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] [2025-02-06 04:33:13,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 04:33:13,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:33:13,518 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)] === [2025-02-06 04:33:13,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:13,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1052154849, now seen corresponding path program 6 times [2025-02-06 04:33:13,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:13,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690318481] [2025-02-06 04:33:13,519 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:33:13,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:13,530 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 28 statements into 2 equivalence classes. [2025-02-06 04:33:13,558 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 24 of 28 statements. [2025-02-06 04:33:13,560 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-06 04:33:13,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:13,753 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:33:13,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:13,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690318481] [2025-02-06 04:33:13,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690318481] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:33:13,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:33:13,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:33:13,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755182508] [2025-02-06 04:33:13,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:13,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 04:33:13,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:13,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 04:33:13,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 04:33:13,799 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2025-02-06 04:33:13,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 102 transitions, 1075 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 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) [2025-02-06 04:33:13,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:13,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2025-02-06 04:33:13,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:14,681 INFO L124 PetriNetUnfolderBase]: 7641/11245 cut-off events. [2025-02-06 04:33:14,681 INFO L125 PetriNetUnfolderBase]: For 47106/47444 co-relation queries the response was YES. [2025-02-06 04:33:14,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40529 conditions, 11245 events. 7641/11245 cut-off events. For 47106/47444 co-relation queries the response was YES. Maximal size of possible extension queue 674. Compared 68186 event pairs, 1354 based on Foata normal form. 3/11225 useless extension candidates. Maximal degree in co-relation 40482. Up to 3266 conditions per place. [2025-02-06 04:33:14,749 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 145 selfloop transitions, 48 changer transitions 1/199 dead transitions. [2025-02-06 04:33:14,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 199 transitions, 2029 flow [2025-02-06 04:33:14,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 04:33:14,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 04:33:14,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2025-02-06 04:33:14,750 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45 [2025-02-06 04:33:14,750 INFO L175 Difference]: Start difference. First operand has 97 places, 102 transitions, 1075 flow. Second operand 11 states and 198 transitions. [2025-02-06 04:33:14,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 199 transitions, 2029 flow [2025-02-06 04:33:14,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 199 transitions, 1968 flow, removed 9 selfloop flow, removed 5 redundant places. [2025-02-06 04:33:14,814 INFO L231 Difference]: Finished difference. Result has 106 places, 113 transitions, 1402 flow [2025-02-06 04:33:14,814 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1402, PETRI_PLACES=106, PETRI_TRANSITIONS=113} [2025-02-06 04:33:14,815 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 69 predicate places. [2025-02-06 04:33:14,815 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 113 transitions, 1402 flow [2025-02-06 04:33:14,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 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) [2025-02-06 04:33:14,815 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:14,815 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] [2025-02-06 04:33:14,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-02-06 04:33:14,815 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)] === [2025-02-06 04:33:14,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:14,816 INFO L85 PathProgramCache]: Analyzing trace with hash -974181385, now seen corresponding path program 7 times [2025-02-06 04:33:14,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:14,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061203106] [2025-02-06 04:33:14,816 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:33:14,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:14,821 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-06 04:33:14,826 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-06 04:33:14,826 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:33:14,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:15,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:33:15,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:15,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061203106] [2025-02-06 04:33:15,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061203106] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:15,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620138225] [2025-02-06 04:33:15,060 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:33:15,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:33:15,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:33:15,063 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) [2025-02-06 04:33:15,067 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 [2025-02-06 04:33:15,127 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-06 04:33:15,149 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-06 04:33:15,149 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:33:15,149 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:15,150 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 04:33:15,151 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:33:15,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:33:15,280 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:33:15,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:33:15,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620138225] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:15,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:33:15,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 8] total 21 [2025-02-06 04:33:15,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628774238] [2025-02-06 04:33:15,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:15,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 04:33:15,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:15,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 04:33:15,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2025-02-06 04:33:15,537 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2025-02-06 04:33:15,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 113 transitions, 1402 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 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) [2025-02-06 04:33:15,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:15,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2025-02-06 04:33:15,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:16,448 INFO L124 PetriNetUnfolderBase]: 7641/11246 cut-off events. [2025-02-06 04:33:16,448 INFO L125 PetriNetUnfolderBase]: For 60754/61128 co-relation queries the response was YES. [2025-02-06 04:33:16,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41700 conditions, 11246 events. 7641/11246 cut-off events. For 60754/61128 co-relation queries the response was YES. Maximal size of possible extension queue 674. Compared 68680 event pairs, 1695 based on Foata normal form. 6/11237 useless extension candidates. Maximal degree in co-relation 41648. Up to 2941 conditions per place. [2025-02-06 04:33:16,542 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 154 selfloop transitions, 42 changer transitions 1/202 dead transitions. [2025-02-06 04:33:16,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 202 transitions, 2211 flow [2025-02-06 04:33:16,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 04:33:16,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 04:33:16,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2025-02-06 04:33:16,543 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46136363636363636 [2025-02-06 04:33:16,543 INFO L175 Difference]: Start difference. First operand has 106 places, 113 transitions, 1402 flow. Second operand 11 states and 203 transitions. [2025-02-06 04:33:16,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 202 transitions, 2211 flow [2025-02-06 04:33:16,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 202 transitions, 2129 flow, removed 33 selfloop flow, removed 5 redundant places. [2025-02-06 04:33:16,740 INFO L231 Difference]: Finished difference. Result has 112 places, 113 transitions, 1427 flow [2025-02-06 04:33:16,740 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1332, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1427, PETRI_PLACES=112, PETRI_TRANSITIONS=113} [2025-02-06 04:33:16,741 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 75 predicate places. [2025-02-06 04:33:16,741 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 113 transitions, 1427 flow [2025-02-06 04:33:16,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 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) [2025-02-06 04:33:16,741 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:16,741 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] [2025-02-06 04:33:16,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 04:33:16,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:33:16,942 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:33:16,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:16,943 INFO L85 PathProgramCache]: Analyzing trace with hash -30477113, now seen corresponding path program 8 times [2025-02-06 04:33:16,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:16,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395049986] [2025-02-06 04:33:16,943 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:33:16,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:16,948 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-02-06 04:33:16,956 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 26 of 28 statements. [2025-02-06 04:33:16,956 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:33:16,956 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:17,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:33:17,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:17,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395049986] [2025-02-06 04:33:17,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395049986] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:33:17,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:33:17,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 04:33:17,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290977096] [2025-02-06 04:33:17,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:17,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 04:33:17,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:17,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 04:33:17,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 04:33:17,121 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2025-02-06 04:33:17,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 113 transitions, 1427 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 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) [2025-02-06 04:33:17,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:17,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2025-02-06 04:33:17,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:18,203 INFO L124 PetriNetUnfolderBase]: 7809/11450 cut-off events. [2025-02-06 04:33:18,204 INFO L125 PetriNetUnfolderBase]: For 60712/61084 co-relation queries the response was YES. [2025-02-06 04:33:18,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42595 conditions, 11450 events. 7809/11450 cut-off events. For 60712/61084 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 69442 event pairs, 1977 based on Foata normal form. 7/11429 useless extension candidates. Maximal degree in co-relation 42542. Up to 4195 conditions per place. [2025-02-06 04:33:18,284 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 154 selfloop transitions, 55 changer transitions 2/216 dead transitions. [2025-02-06 04:33:18,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 216 transitions, 2411 flow [2025-02-06 04:33:18,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:33:18,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:33:18,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 187 transitions. [2025-02-06 04:33:18,285 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5194444444444445 [2025-02-06 04:33:18,285 INFO L175 Difference]: Start difference. First operand has 112 places, 113 transitions, 1427 flow. Second operand 9 states and 187 transitions. [2025-02-06 04:33:18,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 216 transitions, 2411 flow [2025-02-06 04:33:18,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 216 transitions, 2317 flow, removed 15 selfloop flow, removed 7 redundant places. [2025-02-06 04:33:18,376 INFO L231 Difference]: Finished difference. Result has 118 places, 129 transitions, 1756 flow [2025-02-06 04:33:18,376 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1346, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1756, PETRI_PLACES=118, PETRI_TRANSITIONS=129} [2025-02-06 04:33:18,377 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 81 predicate places. [2025-02-06 04:33:18,377 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 129 transitions, 1756 flow [2025-02-06 04:33:18,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 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) [2025-02-06 04:33:18,377 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:18,377 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] [2025-02-06 04:33:18,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-02-06 04:33:18,377 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:33:18,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:18,378 INFO L85 PathProgramCache]: Analyzing trace with hash 166588968, now seen corresponding path program 1 times [2025-02-06 04:33:18,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:18,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722606145] [2025-02-06 04:33:18,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:33:18,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:18,384 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-06 04:33:18,389 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 04:33:18,389 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:33:18,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:18,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:33:18,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:18,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722606145] [2025-02-06 04:33:18,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722606145] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:33:18,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:33:18,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:33:18,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478237659] [2025-02-06 04:33:18,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:18,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:33:18,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:18,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:33:18,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:33:18,448 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2025-02-06 04:33:18,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 129 transitions, 1756 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2025-02-06 04:33:18,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:18,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2025-02-06 04:33:18,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:19,019 INFO L124 PetriNetUnfolderBase]: 3837/5909 cut-off events. [2025-02-06 04:33:19,019 INFO L125 PetriNetUnfolderBase]: For 30282/30471 co-relation queries the response was YES. [2025-02-06 04:33:19,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21292 conditions, 5909 events. 3837/5909 cut-off events. For 30282/30471 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 35090 event pairs, 1699 based on Foata normal form. 270/6165 useless extension candidates. Maximal degree in co-relation 21236. Up to 2655 conditions per place. [2025-02-06 04:33:19,061 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 113 selfloop transitions, 11 changer transitions 0/129 dead transitions. [2025-02-06 04:33:19,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 129 transitions, 1520 flow [2025-02-06 04:33:19,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:33:19,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:33:19,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2025-02-06 04:33:19,068 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.51 [2025-02-06 04:33:19,069 INFO L175 Difference]: Start difference. First operand has 118 places, 129 transitions, 1756 flow. Second operand 5 states and 102 transitions. [2025-02-06 04:33:19,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 129 transitions, 1520 flow [2025-02-06 04:33:19,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 129 transitions, 1440 flow, removed 17 selfloop flow, removed 7 redundant places. [2025-02-06 04:33:19,161 INFO L231 Difference]: Finished difference. Result has 116 places, 99 transitions, 1100 flow [2025-02-06 04:33:19,162 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1100, PETRI_PLACES=116, PETRI_TRANSITIONS=99} [2025-02-06 04:33:19,162 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 79 predicate places. [2025-02-06 04:33:19,162 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 99 transitions, 1100 flow [2025-02-06 04:33:19,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2025-02-06 04:33:19,163 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:19,163 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] [2025-02-06 04:33:19,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-02-06 04:33:19,163 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:33:19,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:19,164 INFO L85 PathProgramCache]: Analyzing trace with hash 831386237, now seen corresponding path program 1 times [2025-02-06 04:33:19,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:19,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783294581] [2025-02-06 04:33:19,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:33:19,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:19,169 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-06 04:33:19,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 04:33:19,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:33:19,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:19,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:33:19,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:19,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783294581] [2025-02-06 04:33:19,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783294581] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:19,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102999312] [2025-02-06 04:33:19,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:33:19,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:33:19,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:33:19,238 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) [2025-02-06 04:33:19,240 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 [2025-02-06 04:33:19,297 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-06 04:33:19,319 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 04:33:19,319 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:33:19,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:19,321 INFO L256 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 04:33:19,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:33:19,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:33:19,381 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:33:19,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:33:19,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102999312] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:19,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:33:19,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2025-02-06 04:33:19,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606026676] [2025-02-06 04:33:19,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:19,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:33:19,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:19,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:33:19,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2025-02-06 04:33:19,461 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2025-02-06 04:33:19,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 99 transitions, 1100 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:33:19,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:19,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2025-02-06 04:33:19,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:20,007 INFO L124 PetriNetUnfolderBase]: 5179/7784 cut-off events. [2025-02-06 04:33:20,007 INFO L125 PetriNetUnfolderBase]: For 31846/32152 co-relation queries the response was YES. [2025-02-06 04:33:20,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26970 conditions, 7784 events. 5179/7784 cut-off events. For 31846/32152 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 45423 event pairs, 2364 based on Foata normal form. 0/7389 useless extension candidates. Maximal degree in co-relation 26917. Up to 2518 conditions per place. [2025-02-06 04:33:20,042 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 151 selfloop transitions, 13 changer transitions 4/172 dead transitions. [2025-02-06 04:33:20,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 172 transitions, 2031 flow [2025-02-06 04:33:20,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 04:33:20,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 04:33:20,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2025-02-06 04:33:20,043 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.428125 [2025-02-06 04:33:20,043 INFO L175 Difference]: Start difference. First operand has 116 places, 99 transitions, 1100 flow. Second operand 8 states and 137 transitions. [2025-02-06 04:33:20,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 172 transitions, 2031 flow [2025-02-06 04:33:20,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 172 transitions, 2013 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 04:33:20,080 INFO L231 Difference]: Finished difference. Result has 121 places, 102 transitions, 1128 flow [2025-02-06 04:33:20,080 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1128, PETRI_PLACES=121, PETRI_TRANSITIONS=102} [2025-02-06 04:33:20,080 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 84 predicate places. [2025-02-06 04:33:20,081 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 102 transitions, 1128 flow [2025-02-06 04:33:20,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:33:20,081 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:20,081 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] [2025-02-06 04:33:20,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-06 04:33:20,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:33:20,282 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:33:20,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:20,282 INFO L85 PathProgramCache]: Analyzing trace with hash -631906492, now seen corresponding path program 1 times [2025-02-06 04:33:20,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:20,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17439295] [2025-02-06 04:33:20,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:33:20,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:20,288 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-06 04:33:20,295 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 04:33:20,295 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:33:20,295 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:20,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:33:20,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:20,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17439295] [2025-02-06 04:33:20,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17439295] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:33:20,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:33:20,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:33:20,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460022650] [2025-02-06 04:33:20,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:20,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:33:20,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:20,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:33:20,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:33:20,339 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2025-02-06 04:33:20,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 102 transitions, 1128 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2025-02-06 04:33:20,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:20,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2025-02-06 04:33:20,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:20,683 INFO L124 PetriNetUnfolderBase]: 3137/5005 cut-off events. [2025-02-06 04:33:20,683 INFO L125 PetriNetUnfolderBase]: For 19321/19622 co-relation queries the response was YES. [2025-02-06 04:33:20,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17756 conditions, 5005 events. 3137/5005 cut-off events. For 19321/19622 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 30271 event pairs, 1812 based on Foata normal form. 248/5237 useless extension candidates. Maximal degree in co-relation 17700. Up to 3065 conditions per place. [2025-02-06 04:33:20,711 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 46 selfloop transitions, 2 changer transitions 52/105 dead transitions. [2025-02-06 04:33:20,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 105 transitions, 1129 flow [2025-02-06 04:33:20,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:33:20,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:33:20,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 96 transitions. [2025-02-06 04:33:20,712 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48 [2025-02-06 04:33:20,713 INFO L175 Difference]: Start difference. First operand has 121 places, 102 transitions, 1128 flow. Second operand 5 states and 96 transitions. [2025-02-06 04:33:20,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 105 transitions, 1129 flow [2025-02-06 04:33:20,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 105 transitions, 1085 flow, removed 6 selfloop flow, removed 8 redundant places. [2025-02-06 04:33:20,736 INFO L231 Difference]: Finished difference. Result has 116 places, 53 transitions, 333 flow [2025-02-06 04:33:20,736 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=333, PETRI_PLACES=116, PETRI_TRANSITIONS=53} [2025-02-06 04:33:20,737 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 79 predicate places. [2025-02-06 04:33:20,737 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 53 transitions, 333 flow [2025-02-06 04:33:20,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2025-02-06 04:33:20,737 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:20,737 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:33:20,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-02-06 04:33:20,737 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:33:20,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:20,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1985640656, now seen corresponding path program 1 times [2025-02-06 04:33:20,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:20,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820211740] [2025-02-06 04:33:20,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:33:20,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:20,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-06 04:33:20,747 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 04:33:20,747 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:33:20,747 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:20,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:33:20,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:20,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820211740] [2025-02-06 04:33:20,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820211740] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:20,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349582943] [2025-02-06 04:33:20,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:33:20,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:33:20,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:33:20,821 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) [2025-02-06 04:33:20,822 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 [2025-02-06 04:33:20,878 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-06 04:33:20,902 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 04:33:20,902 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:33:20,902 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:20,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 04:33:20,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:33:20,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:33:20,978 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:33:21,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:33:21,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349582943] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:21,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:33:21,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 13 [2025-02-06 04:33:21,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099913604] [2025-02-06 04:33:21,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:21,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:33:21,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:21,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:33:21,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2025-02-06 04:33:21,097 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2025-02-06 04:33:21,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 53 transitions, 333 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 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) [2025-02-06 04:33:21,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:21,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2025-02-06 04:33:21,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:21,298 INFO L124 PetriNetUnfolderBase]: 1952/2786 cut-off events. [2025-02-06 04:33:21,298 INFO L125 PetriNetUnfolderBase]: For 7599/7813 co-relation queries the response was YES. [2025-02-06 04:33:21,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9965 conditions, 2786 events. 1952/2786 cut-off events. For 7599/7813 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 11927 event pairs, 611 based on Foata normal form. 79/2861 useless extension candidates. Maximal degree in co-relation 9929. Up to 1433 conditions per place. [2025-02-06 04:33:21,312 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 52 selfloop transitions, 10 changer transitions 0/65 dead transitions. [2025-02-06 04:33:21,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 65 transitions, 508 flow [2025-02-06 04:33:21,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:33:21,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:33:21,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2025-02-06 04:33:21,312 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33214285714285713 [2025-02-06 04:33:21,312 INFO L175 Difference]: Start difference. First operand has 116 places, 53 transitions, 333 flow. Second operand 7 states and 93 transitions. [2025-02-06 04:33:21,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 65 transitions, 508 flow [2025-02-06 04:33:21,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 65 transitions, 440 flow, removed 32 selfloop flow, removed 18 redundant places. [2025-02-06 04:33:21,319 INFO L231 Difference]: Finished difference. Result has 70 places, 48 transitions, 269 flow [2025-02-06 04:33:21,319 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=269, PETRI_PLACES=70, PETRI_TRANSITIONS=48} [2025-02-06 04:33:21,319 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 33 predicate places. [2025-02-06 04:33:21,320 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 48 transitions, 269 flow [2025-02-06 04:33:21,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 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) [2025-02-06 04:33:21,320 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:21,320 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:33:21,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-06 04:33:21,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-02-06 04:33:21,521 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:33:21,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:21,521 INFO L85 PathProgramCache]: Analyzing trace with hash -298283675, now seen corresponding path program 1 times [2025-02-06 04:33:21,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:21,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113407164] [2025-02-06 04:33:21,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:33:21,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:21,528 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-06 04:33:21,563 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 04:33:21,563 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:33:21,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:22,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:33:22,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:22,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113407164] [2025-02-06 04:33:22,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113407164] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:33:22,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:33:22,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-02-06 04:33:22,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151297817] [2025-02-06 04:33:22,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:22,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 04:33:22,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:22,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 04:33:22,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2025-02-06 04:33:22,169 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2025-02-06 04:33:22,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 48 transitions, 269 flow. Second operand has 14 states, 14 states have (on average 9.071428571428571) internal successors, (127), 14 states have internal predecessors, (127), 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) [2025-02-06 04:33:22,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:22,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2025-02-06 04:33:22,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:22,998 INFO L124 PetriNetUnfolderBase]: 2826/4179 cut-off events. [2025-02-06 04:33:22,998 INFO L125 PetriNetUnfolderBase]: For 8096/8286 co-relation queries the response was YES. [2025-02-06 04:33:23,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13735 conditions, 4179 events. 2826/4179 cut-off events. For 8096/8286 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 21879 event pairs, 207 based on Foata normal form. 1/4177 useless extension candidates. Maximal degree in co-relation 13715. Up to 1701 conditions per place. [2025-02-06 04:33:23,017 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 153 selfloop transitions, 14 changer transitions 10/181 dead transitions. [2025-02-06 04:33:23,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 181 transitions, 1309 flow [2025-02-06 04:33:23,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 04:33:23,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-06 04:33:23,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 233 transitions. [2025-02-06 04:33:23,018 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4480769230769231 [2025-02-06 04:33:23,018 INFO L175 Difference]: Start difference. First operand has 70 places, 48 transitions, 269 flow. Second operand 13 states and 233 transitions. [2025-02-06 04:33:23,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 181 transitions, 1309 flow [2025-02-06 04:33:23,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 181 transitions, 1271 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 04:33:23,024 INFO L231 Difference]: Finished difference. Result has 85 places, 56 transitions, 379 flow [2025-02-06 04:33:23,024 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=379, PETRI_PLACES=85, PETRI_TRANSITIONS=56} [2025-02-06 04:33:23,024 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 48 predicate places. [2025-02-06 04:33:23,024 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 56 transitions, 379 flow [2025-02-06 04:33:23,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.071428571428571) internal successors, (127), 14 states have internal predecessors, (127), 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) [2025-02-06 04:33:23,024 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:23,025 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:33:23,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-02-06 04:33:23,025 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:33:23,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:23,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1322441827, now seen corresponding path program 2 times [2025-02-06 04:33:23,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:23,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17053616] [2025-02-06 04:33:23,025 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:33:23,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:23,031 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-02-06 04:33:23,083 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 04:33:23,084 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:33:23,084 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:23,882 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:33:23,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:23,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17053616] [2025-02-06 04:33:23,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17053616] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:23,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871455509] [2025-02-06 04:33:23,882 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:33:23,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:33:23,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:33:23,887 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:33:23,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-06 04:33:23,955 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-02-06 04:33:23,980 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 04:33:23,980 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:33:23,981 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:23,982 INFO L256 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-02-06 04:33:23,983 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:33:24,236 INFO L349 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2025-02-06 04:33:24,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 41 [2025-02-06 04:33:24,288 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:33:24,289 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:33:26,711 INFO L349 Elim1Store]: treesize reduction 334, result has 76.4 percent of original size [2025-02-06 04:33:26,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 333 treesize of output 1157