./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/clever.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 551b0097 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/clever.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f1b460e4dbdd0bf3097d690d1720c7a2141566e2aa4ca1ed003c7fa25661851d --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 01:04:00,415 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 01:04:00,454 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-10 01:04:00,458 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 01:04:00,458 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 01:04:00,473 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 01:04:00,474 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 01:04:00,474 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 01:04:00,474 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 01:04:00,474 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 01:04:00,474 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 01:04:00,475 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 01:04:00,475 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 01:04:00,475 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 01:04:00,475 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 01:04:00,475 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 01:04:00,475 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 01:04:00,475 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 01:04:00,480 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 01:04:00,480 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 01:04:00,480 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 01:04:00,480 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 01:04:00,480 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 01:04:00,480 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 01:04:00,480 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 01:04:00,480 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 01:04:00,480 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 01:04:00,480 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 01:04:00,480 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 01:04:00,481 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 01:04:00,481 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 01:04:00,481 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 01:04:00,481 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 01:04:00,481 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:04:00,481 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 01:04:00,481 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 01:04:00,481 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 01:04:00,481 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 01:04:00,481 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:04:00,481 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 01:04:00,481 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 01:04:00,481 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 01:04:00,481 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 01:04:00,482 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 01:04:00,482 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 01:04:00,482 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 01:04:00,482 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 01:04:00,482 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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> f1b460e4dbdd0bf3097d690d1720c7a2141566e2aa4ca1ed003c7fa25661851d [2025-01-10 01:04:00,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 01:04:00,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 01:04:00,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 01:04:00,726 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 01:04:00,726 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 01:04:00,727 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/clever.wvr.c [2025-01-10 01:04:02,166 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1bb5b5028/52968e9ad8934f7683625be0d8687038/FLAGb963eec52 [2025-01-10 01:04:02,383 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 01:04:02,383 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/clever.wvr.c [2025-01-10 01:04:02,407 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1bb5b5028/52968e9ad8934f7683625be0d8687038/FLAGb963eec52 [2025-01-10 01:04:02,454 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1bb5b5028/52968e9ad8934f7683625be0d8687038 [2025-01-10 01:04:02,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 01:04:02,458 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 01:04:02,459 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 01:04:02,459 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 01:04:02,462 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 01:04:02,463 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:04:02" (1/1) ... [2025-01-10 01:04:02,464 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73848fea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:02, skipping insertion in model container [2025-01-10 01:04:02,464 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:04:02" (1/1) ... [2025-01-10 01:04:02,476 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 01:04:02,606 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 01:04:02,618 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 01:04:02,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 01:04:02,650 INFO L204 MainTranslator]: Completed translation [2025-01-10 01:04:02,651 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:02 WrapperNode [2025-01-10 01:04:02,653 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 01:04:02,653 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 01:04:02,653 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 01:04:02,654 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 01:04:02,659 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:02" (1/1) ... [2025-01-10 01:04:02,664 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:02" (1/1) ... [2025-01-10 01:04:02,680 INFO L138 Inliner]: procedures = 18, calls = 12, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 74 [2025-01-10 01:04:02,680 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 01:04:02,681 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 01:04:02,682 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 01:04:02,682 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 01:04:02,688 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:02" (1/1) ... [2025-01-10 01:04:02,688 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:02" (1/1) ... [2025-01-10 01:04:02,689 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:02" (1/1) ... [2025-01-10 01:04:02,699 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-10 01:04:02,699 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:02" (1/1) ... [2025-01-10 01:04:02,699 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:02" (1/1) ... [2025-01-10 01:04:02,704 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:02" (1/1) ... [2025-01-10 01:04:02,705 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:02" (1/1) ... [2025-01-10 01:04:02,712 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:02" (1/1) ... [2025-01-10 01:04:02,713 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:02" (1/1) ... [2025-01-10 01:04:02,714 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:02" (1/1) ... [2025-01-10 01:04:02,719 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 01:04:02,719 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 01:04:02,719 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 01:04:02,719 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 01:04:02,721 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:02" (1/1) ... [2025-01-10 01:04:02,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:04:02,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:02,750 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) [2025-01-10 01:04:02,761 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 [2025-01-10 01:04:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 01:04:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-10 01:04:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-10 01:04:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-10 01:04:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-10 01:04:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 01:04:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 01:04:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 01:04:02,780 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-10 01:04:02,838 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 01:04:02,840 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 01:04:02,970 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 01:04:02,970 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 01:04:03,159 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 01:04:03,161 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 01:04:03,161 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:04:03 BoogieIcfgContainer [2025-01-10 01:04:03,161 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 01:04:03,163 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 01:04:03,164 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 01:04:03,167 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 01:04:03,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:04:02" (1/3) ... [2025-01-10 01:04:03,169 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dfcb79b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:04:03, skipping insertion in model container [2025-01-10 01:04:03,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:02" (2/3) ... [2025-01-10 01:04:03,170 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dfcb79b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:04:03, skipping insertion in model container [2025-01-10 01:04:03,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:04:03" (3/3) ... [2025-01-10 01:04:03,171 INFO L128 eAbstractionObserver]: Analyzing ICFG clever.wvr.c [2025-01-10 01:04:03,183 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 01:04:03,185 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG clever.wvr.c that has 3 procedures, 20 locations, 1 initial locations, 3 loop locations, and 2 error locations. [2025-01-10 01:04:03,186 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 01:04:03,219 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-01-10 01:04:03,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 22 transitions, 58 flow [2025-01-10 01:04:03,275 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2025-01-10 01:04:03,279 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-10 01:04:03,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 20 events. 3/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 17 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 13. Up to 2 conditions per place. [2025-01-10 01:04:03,284 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 22 transitions, 58 flow [2025-01-10 01:04:03,286 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 19 transitions, 50 flow [2025-01-10 01:04:03,295 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 01:04:03,304 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=None, 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;@4989e0db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 01:04:03,304 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-01-10 01:04:03,318 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 01:04:03,318 INFO L124 PetriNetUnfolderBase]: 3/16 cut-off events. [2025-01-10 01:04:03,318 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-10 01:04:03,318 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:03,319 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:03,319 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:04:03,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:03,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1464852542, now seen corresponding path program 1 times [2025-01-10 01:04:03,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:03,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39070713] [2025-01-10 01:04:03,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:04:03,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:03,397 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 01:04:03,433 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 01:04:03,434 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:04:03,434 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:03,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:03,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:03,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39070713] [2025-01-10 01:04:03,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39070713] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:04:03,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:04:03,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 01:04:03,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993425652] [2025-01-10 01:04:03,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:04:03,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 01:04:03,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:03,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 01:04:03,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 01:04:03,717 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2025-01-10 01:04:03,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:03,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:03,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2025-01-10 01:04:03,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:03,811 INFO L124 PetriNetUnfolderBase]: 106/171 cut-off events. [2025-01-10 01:04:03,811 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2025-01-10 01:04:03,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 364 conditions, 171 events. 106/171 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 518 event pairs, 19 based on Foata normal form. 2/107 useless extension candidates. Maximal degree in co-relation 318. Up to 110 conditions per place. [2025-01-10 01:04:03,818 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 21 selfloop transitions, 3 changer transitions 1/28 dead transitions. [2025-01-10 01:04:03,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 28 transitions, 127 flow [2025-01-10 01:04:03,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 01:04:03,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 01:04:03,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 45 transitions. [2025-01-10 01:04:03,829 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6818181818181818 [2025-01-10 01:04:03,831 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 50 flow. Second operand 3 states and 45 transitions. [2025-01-10 01:04:03,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 28 transitions, 127 flow [2025-01-10 01:04:03,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 28 transitions, 113 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-01-10 01:04:03,839 INFO L231 Difference]: Finished difference. Result has 20 places, 19 transitions, 57 flow [2025-01-10 01:04:03,841 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=20, PETRI_TRANSITIONS=19} [2025-01-10 01:04:03,844 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, -3 predicate places. [2025-01-10 01:04:03,844 INFO L471 AbstractCegarLoop]: Abstraction has has 20 places, 19 transitions, 57 flow [2025-01-10 01:04:03,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:03,845 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:03,845 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:03,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 01:04:03,845 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:04:03,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:03,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1833137187, now seen corresponding path program 1 times [2025-01-10 01:04:03,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:03,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638748323] [2025-01-10 01:04:03,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:04:03,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:03,852 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-10 01:04:03,865 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-10 01:04:03,865 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:04:03,865 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:03,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:03,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:03,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638748323] [2025-01-10 01:04:03,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638748323] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:04:03,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:04:03,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 01:04:03,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357525385] [2025-01-10 01:04:03,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:04:03,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 01:04:03,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:03,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 01:04:03,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 01:04:03,938 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2025-01-10 01:04:03,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 19 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:03,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:03,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2025-01-10 01:04:03,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:04,034 INFO L124 PetriNetUnfolderBase]: 145/242 cut-off events. [2025-01-10 01:04:04,035 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2025-01-10 01:04:04,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 579 conditions, 242 events. 145/242 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 795 event pairs, 12 based on Foata normal form. 6/219 useless extension candidates. Maximal degree in co-relation 172. Up to 96 conditions per place. [2025-01-10 01:04:04,037 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 37 selfloop transitions, 7 changer transitions 2/49 dead transitions. [2025-01-10 01:04:04,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 49 transitions, 236 flow [2025-01-10 01:04:04,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 01:04:04,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 01:04:04,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2025-01-10 01:04:04,038 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6454545454545455 [2025-01-10 01:04:04,038 INFO L175 Difference]: Start difference. First operand has 20 places, 19 transitions, 57 flow. Second operand 5 states and 71 transitions. [2025-01-10 01:04:04,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 49 transitions, 236 flow [2025-01-10 01:04:04,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 49 transitions, 229 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 01:04:04,040 INFO L231 Difference]: Finished difference. Result has 26 places, 25 transitions, 105 flow [2025-01-10 01:04:04,040 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=105, PETRI_PLACES=26, PETRI_TRANSITIONS=25} [2025-01-10 01:04:04,041 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 3 predicate places. [2025-01-10 01:04:04,041 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 25 transitions, 105 flow [2025-01-10 01:04:04,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:04,041 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:04,041 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:04,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 01:04:04,042 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:04:04,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:04,042 INFO L85 PathProgramCache]: Analyzing trace with hash -2011893161, now seen corresponding path program 2 times [2025-01-10 01:04:04,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:04,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025432837] [2025-01-10 01:04:04,042 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:04:04,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:04,048 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-01-10 01:04:04,053 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-01-10 01:04:04,054 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:04:04,054 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:04,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:04,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:04,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025432837] [2025-01-10 01:04:04,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025432837] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:04,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555960229] [2025-01-10 01:04:04,116 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:04:04,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:04,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:04,119 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) [2025-01-10 01:04:04,121 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 [2025-01-10 01:04:04,162 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-01-10 01:04:04,178 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-01-10 01:04:04,178 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:04:04,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:04,183 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 01:04:04,185 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:04,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:04,279 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:04,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:04,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555960229] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:04:04,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:04:04,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2025-01-10 01:04:04,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528559076] [2025-01-10 01:04:04,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:04:04,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 01:04:04,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:04,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 01:04:04,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-10 01:04:04,307 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2025-01-10 01:04:04,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 105 flow. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:04,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:04,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2025-01-10 01:04:04,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:04,464 INFO L124 PetriNetUnfolderBase]: 145/239 cut-off events. [2025-01-10 01:04:04,465 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2025-01-10 01:04:04,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 747 conditions, 239 events. 145/239 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 770 event pairs, 15 based on Foata normal form. 8/242 useless extension candidates. Maximal degree in co-relation 306. Up to 105 conditions per place. [2025-01-10 01:04:04,468 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 35 selfloop transitions, 15 changer transitions 5/58 dead transitions. [2025-01-10 01:04:04,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 58 transitions, 348 flow [2025-01-10 01:04:04,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 01:04:04,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 01:04:04,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2025-01-10 01:04:04,471 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.564935064935065 [2025-01-10 01:04:04,471 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 105 flow. Second operand 7 states and 87 transitions. [2025-01-10 01:04:04,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 58 transitions, 348 flow [2025-01-10 01:04:04,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 58 transitions, 348 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 01:04:04,475 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 211 flow [2025-01-10 01:04:04,475 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=211, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2025-01-10 01:04:04,476 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 13 predicate places. [2025-01-10 01:04:04,476 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 211 flow [2025-01-10 01:04:04,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:04,477 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:04,477 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:04,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-10 01:04:04,681 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 [2025-01-10 01:04:04,682 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:04:04,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:04,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1335572162, now seen corresponding path program 1 times [2025-01-10 01:04:04,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:04,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337709480] [2025-01-10 01:04:04,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:04:04,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:04,689 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-10 01:04:04,695 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 01:04:04,695 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:04:04,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:04,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:04:04,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:04,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337709480] [2025-01-10 01:04:04,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337709480] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:04:04,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:04:04,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 01:04:04,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585056896] [2025-01-10 01:04:04,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:04:04,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 01:04:04,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:04,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 01:04:04,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 01:04:04,727 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2025-01-10 01:04:04,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 211 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:04,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:04,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2025-01-10 01:04:04,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:04,786 INFO L124 PetriNetUnfolderBase]: 127/223 cut-off events. [2025-01-10 01:04:04,786 INFO L125 PetriNetUnfolderBase]: For 360/360 co-relation queries the response was YES. [2025-01-10 01:04:04,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 877 conditions, 223 events. 127/223 cut-off events. For 360/360 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 687 event pairs, 8 based on Foata normal form. 14/234 useless extension candidates. Maximal degree in co-relation 543. Up to 117 conditions per place. [2025-01-10 01:04:04,788 INFO L140 encePairwiseOnDemand]: 18/22 looper letters, 38 selfloop transitions, 7 changer transitions 3/51 dead transitions. [2025-01-10 01:04:04,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 51 transitions, 398 flow [2025-01-10 01:04:04,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 01:04:04,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 01:04:04,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 57 transitions. [2025-01-10 01:04:04,790 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6477272727272727 [2025-01-10 01:04:04,790 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 211 flow. Second operand 4 states and 57 transitions. [2025-01-10 01:04:04,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 51 transitions, 398 flow [2025-01-10 01:04:04,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 51 transitions, 386 flow, removed 6 selfloop flow, removed 0 redundant places. [2025-01-10 01:04:04,793 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 234 flow [2025-01-10 01:04:04,793 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2025-01-10 01:04:04,794 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 17 predicate places. [2025-01-10 01:04:04,794 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 234 flow [2025-01-10 01:04:04,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:04,794 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:04,794 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:04,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-10 01:04:04,795 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:04:04,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:04,795 INFO L85 PathProgramCache]: Analyzing trace with hash 616392306, now seen corresponding path program 2 times [2025-01-10 01:04:04,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:04,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434882559] [2025-01-10 01:04:04,795 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:04:04,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:04,799 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-01-10 01:04:04,803 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 01:04:04,804 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:04:04,804 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:04,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:04:04,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:04,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434882559] [2025-01-10 01:04:04,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434882559] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:04:04,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:04:04,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 01:04:04,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067037766] [2025-01-10 01:04:04,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:04:04,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 01:04:04,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:04,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 01:04:04,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 01:04:04,832 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2025-01-10 01:04:04,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 234 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:04,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:04,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2025-01-10 01:04:04,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:04,886 INFO L124 PetriNetUnfolderBase]: 113/197 cut-off events. [2025-01-10 01:04:04,887 INFO L125 PetriNetUnfolderBase]: For 477/477 co-relation queries the response was YES. [2025-01-10 01:04:04,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 820 conditions, 197 events. 113/197 cut-off events. For 477/477 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 574 event pairs, 24 based on Foata normal form. 2/195 useless extension candidates. Maximal degree in co-relation 502. Up to 68 conditions per place. [2025-01-10 01:04:04,889 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 39 selfloop transitions, 9 changer transitions 2/53 dead transitions. [2025-01-10 01:04:04,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 53 transitions, 446 flow [2025-01-10 01:04:04,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 01:04:04,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 01:04:04,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2025-01-10 01:04:04,890 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5818181818181818 [2025-01-10 01:04:04,890 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 234 flow. Second operand 5 states and 64 transitions. [2025-01-10 01:04:04,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 53 transitions, 446 flow [2025-01-10 01:04:04,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 53 transitions, 424 flow, removed 4 selfloop flow, removed 3 redundant places. [2025-01-10 01:04:04,893 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 282 flow [2025-01-10 01:04:04,893 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=282, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2025-01-10 01:04:04,894 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 21 predicate places. [2025-01-10 01:04:04,894 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 282 flow [2025-01-10 01:04:04,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:04,894 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:04,894 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:04,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-10 01:04:04,894 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:04:04,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:04,895 INFO L85 PathProgramCache]: Analyzing trace with hash 204417476, now seen corresponding path program 1 times [2025-01-10 01:04:04,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:04,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849098909] [2025-01-10 01:04:04,895 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:04:04,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:04,899 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-10 01:04:04,909 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 01:04:04,909 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:04:04,909 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:05,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:05,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:05,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849098909] [2025-01-10 01:04:05,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849098909] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:05,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190637284] [2025-01-10 01:04:05,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:04:05,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:05,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:05,094 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) [2025-01-10 01:04:05,096 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 [2025-01-10 01:04:05,141 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-10 01:04:05,164 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 01:04:05,164 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:04:05,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:05,169 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 01:04:05,170 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:05,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:05,317 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:05,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:05,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190637284] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:04:05,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:04:05,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2025-01-10 01:04:05,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40154252] [2025-01-10 01:04:05,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:04:05,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-10 01:04:05,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:05,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-10 01:04:05,434 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2025-01-10 01:04:05,434 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2025-01-10 01:04:05,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 282 flow. Second operand has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:05,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:05,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2025-01-10 01:04:05,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:05,731 INFO L124 PetriNetUnfolderBase]: 235/404 cut-off events. [2025-01-10 01:04:05,732 INFO L125 PetriNetUnfolderBase]: For 1210/1210 co-relation queries the response was YES. [2025-01-10 01:04:05,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1797 conditions, 404 events. 235/404 cut-off events. For 1210/1210 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1469 event pairs, 15 based on Foata normal form. 14/416 useless extension candidates. Maximal degree in co-relation 1238. Up to 168 conditions per place. [2025-01-10 01:04:05,735 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 64 selfloop transitions, 21 changer transitions 20/108 dead transitions. [2025-01-10 01:04:05,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 108 transitions, 974 flow [2025-01-10 01:04:05,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-10 01:04:05,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-10 01:04:05,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2025-01-10 01:04:05,737 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6262626262626263 [2025-01-10 01:04:05,737 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 282 flow. Second operand 9 states and 124 transitions. [2025-01-10 01:04:05,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 108 transitions, 974 flow [2025-01-10 01:04:05,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 108 transitions, 937 flow, removed 15 selfloop flow, removed 1 redundant places. [2025-01-10 01:04:05,743 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 486 flow [2025-01-10 01:04:05,743 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=486, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2025-01-10 01:04:05,743 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 34 predicate places. [2025-01-10 01:04:05,743 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 486 flow [2025-01-10 01:04:05,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:05,744 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:05,744 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:05,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-10 01:04:05,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:05,948 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:04:05,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:05,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1401472028, now seen corresponding path program 2 times [2025-01-10 01:04:05,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:05,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198486876] [2025-01-10 01:04:05,949 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:04:05,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:05,953 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-01-10 01:04:05,961 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 01:04:05,961 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:04:05,961 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:06,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:06,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:06,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198486876] [2025-01-10 01:04:06,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198486876] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:06,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176782419] [2025-01-10 01:04:06,144 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:04:06,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:06,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:06,148 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) [2025-01-10 01:04:06,154 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 [2025-01-10 01:04:06,177 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-01-10 01:04:06,190 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 01:04:06,190 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:04:06,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:06,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 01:04:06,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:06,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:06,337 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:10,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:10,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176782419] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:04:10,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:04:10,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2025-01-10 01:04:10,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039468672] [2025-01-10 01:04:10,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:04:10,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-10 01:04:10,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:10,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-10 01:04:10,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=102, Unknown=1, NotChecked=0, Total=156 [2025-01-10 01:04:10,460 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2025-01-10 01:04:10,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 486 flow. Second operand has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:10,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:10,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2025-01-10 01:04:10,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:11,171 INFO L124 PetriNetUnfolderBase]: 624/1068 cut-off events. [2025-01-10 01:04:11,171 INFO L125 PetriNetUnfolderBase]: For 3841/3841 co-relation queries the response was YES. [2025-01-10 01:04:11,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5090 conditions, 1068 events. 624/1068 cut-off events. For 3841/3841 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5056 event pairs, 44 based on Foata normal form. 8/1074 useless extension candidates. Maximal degree in co-relation 5010. Up to 333 conditions per place. [2025-01-10 01:04:11,181 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 134 selfloop transitions, 86 changer transitions 11/234 dead transitions. [2025-01-10 01:04:11,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 234 transitions, 2365 flow [2025-01-10 01:04:11,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-10 01:04:11,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-01-10 01:04:11,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 240 transitions. [2025-01-10 01:04:11,183 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6417112299465241 [2025-01-10 01:04:11,183 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 486 flow. Second operand 17 states and 240 transitions. [2025-01-10 01:04:11,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 234 transitions, 2365 flow [2025-01-10 01:04:11,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 234 transitions, 2232 flow, removed 63 selfloop flow, removed 3 redundant places. [2025-01-10 01:04:11,198 INFO L231 Difference]: Finished difference. Result has 80 places, 135 transitions, 1561 flow [2025-01-10 01:04:11,199 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1561, PETRI_PLACES=80, PETRI_TRANSITIONS=135} [2025-01-10 01:04:11,200 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 57 predicate places. [2025-01-10 01:04:11,201 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 135 transitions, 1561 flow [2025-01-10 01:04:11,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:11,201 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:11,201 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:11,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-10 01:04:11,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:11,405 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:04:11,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:11,405 INFO L85 PathProgramCache]: Analyzing trace with hash -830854616, now seen corresponding path program 3 times [2025-01-10 01:04:11,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:11,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961399041] [2025-01-10 01:04:11,406 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:04:11,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:11,411 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-01-10 01:04:11,419 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 01:04:11,420 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-10 01:04:11,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:11,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:11,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:11,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961399041] [2025-01-10 01:04:11,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961399041] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:11,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266415485] [2025-01-10 01:04:11,701 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:04:11,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:11,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:11,704 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) [2025-01-10 01:04:11,713 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 [2025-01-10 01:04:11,743 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-01-10 01:04:11,755 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 01:04:11,755 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-10 01:04:11,755 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:11,756 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 01:04:11,756 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:11,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:11,912 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:12,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:12,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266415485] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:04:12,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:04:12,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2025-01-10 01:04:12,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838890689] [2025-01-10 01:04:12,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:04:12,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-10 01:04:12,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:12,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-10 01:04:12,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2025-01-10 01:04:12,012 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2025-01-10 01:04:12,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 135 transitions, 1561 flow. Second operand has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:12,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:12,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2025-01-10 01:04:12,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:12,577 INFO L124 PetriNetUnfolderBase]: 1342/2300 cut-off events. [2025-01-10 01:04:12,577 INFO L125 PetriNetUnfolderBase]: For 11131/11131 co-relation queries the response was YES. [2025-01-10 01:04:12,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12358 conditions, 2300 events. 1342/2300 cut-off events. For 11131/11131 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 12756 event pairs, 117 based on Foata normal form. 7/2305 useless extension candidates. Maximal degree in co-relation 11816. Up to 723 conditions per place. [2025-01-10 01:04:12,593 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 183 selfloop transitions, 151 changer transitions 11/348 dead transitions. [2025-01-10 01:04:12,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 348 transitions, 4467 flow [2025-01-10 01:04:12,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-10 01:04:12,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-01-10 01:04:12,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 155 transitions. [2025-01-10 01:04:12,594 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.640495867768595 [2025-01-10 01:04:12,594 INFO L175 Difference]: Start difference. First operand has 80 places, 135 transitions, 1561 flow. Second operand 11 states and 155 transitions. [2025-01-10 01:04:12,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 348 transitions, 4467 flow [2025-01-10 01:04:12,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 348 transitions, 4251 flow, removed 105 selfloop flow, removed 2 redundant places. [2025-01-10 01:04:12,622 INFO L231 Difference]: Finished difference. Result has 93 places, 241 transitions, 3359 flow [2025-01-10 01:04:12,622 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1441, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3359, PETRI_PLACES=93, PETRI_TRANSITIONS=241} [2025-01-10 01:04:12,622 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 70 predicate places. [2025-01-10 01:04:12,622 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 241 transitions, 3359 flow [2025-01-10 01:04:12,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:12,623 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:12,623 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:12,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-10 01:04:12,827 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,SelfDestructingSolverStorable7 [2025-01-10 01:04:12,827 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:04:12,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:12,827 INFO L85 PathProgramCache]: Analyzing trace with hash -2088601864, now seen corresponding path program 1 times [2025-01-10 01:04:12,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:12,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360997020] [2025-01-10 01:04:12,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:04:12,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:12,831 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-10 01:04:12,834 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 01:04:12,834 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:04:12,834 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:12,871 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:04:12,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:12,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360997020] [2025-01-10 01:04:12,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360997020] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:12,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632714777] [2025-01-10 01:04:12,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:04:12,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:12,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:12,877 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) [2025-01-10 01:04:12,879 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 [2025-01-10 01:04:12,905 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-10 01:04:12,914 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 01:04:12,914 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:04:12,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:12,915 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 01:04:12,916 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:12,982 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:04:12,983 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:13,012 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:04:13,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632714777] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:04:13,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:04:13,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-01-10 01:04:13,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368474337] [2025-01-10 01:04:13,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:04:13,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-10 01:04:13,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:13,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-10 01:04:13,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-01-10 01:04:13,014 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2025-01-10 01:04:13,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 241 transitions, 3359 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 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) [2025-01-10 01:04:13,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:13,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2025-01-10 01:04:13,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:13,560 INFO L124 PetriNetUnfolderBase]: 2084/3651 cut-off events. [2025-01-10 01:04:13,560 INFO L125 PetriNetUnfolderBase]: For 24417/24417 co-relation queries the response was YES. [2025-01-10 01:04:13,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21366 conditions, 3651 events. 2084/3651 cut-off events. For 24417/24417 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 23334 event pairs, 27 based on Foata normal form. 48/3696 useless extension candidates. Maximal degree in co-relation 19044. Up to 1097 conditions per place. [2025-01-10 01:04:13,588 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 382 selfloop transitions, 144 changer transitions 2/531 dead transitions. [2025-01-10 01:04:13,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 531 transitions, 7831 flow [2025-01-10 01:04:13,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-10 01:04:13,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-01-10 01:04:13,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2025-01-10 01:04:13,590 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2025-01-10 01:04:13,590 INFO L175 Difference]: Start difference. First operand has 93 places, 241 transitions, 3359 flow. Second operand 12 states and 154 transitions. [2025-01-10 01:04:13,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 531 transitions, 7831 flow [2025-01-10 01:04:13,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 531 transitions, 7670 flow, removed 61 selfloop flow, removed 6 redundant places. [2025-01-10 01:04:13,649 INFO L231 Difference]: Finished difference. Result has 106 places, 333 transitions, 5254 flow [2025-01-10 01:04:13,649 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3257, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5254, PETRI_PLACES=106, PETRI_TRANSITIONS=333} [2025-01-10 01:04:13,650 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 83 predicate places. [2025-01-10 01:04:13,650 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 333 transitions, 5254 flow [2025-01-10 01:04:13,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 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) [2025-01-10 01:04:13,650 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:13,650 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:13,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-10 01:04:13,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:13,851 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:04:13,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:13,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1131668466, now seen corresponding path program 2 times [2025-01-10 01:04:13,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:13,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613726200] [2025-01-10 01:04:13,852 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:04:13,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:13,863 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-01-10 01:04:13,867 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 01:04:13,867 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:04:13,867 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:13,910 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:04:13,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:13,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613726200] [2025-01-10 01:04:13,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613726200] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:13,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939680959] [2025-01-10 01:04:13,911 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:04:13,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:13,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:13,914 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) [2025-01-10 01:04:13,921 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 [2025-01-10 01:04:13,943 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-01-10 01:04:13,953 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 01:04:13,953 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:04:13,953 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:13,954 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 01:04:13,954 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:14,012 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:04:14,012 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:14,039 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:04:14,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939680959] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:04:14,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:04:14,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2025-01-10 01:04:14,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915758643] [2025-01-10 01:04:14,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:04:14,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-10 01:04:14,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:14,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-10 01:04:14,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2025-01-10 01:04:14,042 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2025-01-10 01:04:14,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 333 transitions, 5254 flow. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:14,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:14,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2025-01-10 01:04:14,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:14,729 INFO L124 PetriNetUnfolderBase]: 2369/4322 cut-off events. [2025-01-10 01:04:14,729 INFO L125 PetriNetUnfolderBase]: For 37598/37598 co-relation queries the response was YES. [2025-01-10 01:04:14,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28297 conditions, 4322 events. 2369/4322 cut-off events. For 37598/37598 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 29729 event pairs, 166 based on Foata normal form. 28/4348 useless extension candidates. Maximal degree in co-relation 27951. Up to 1472 conditions per place. [2025-01-10 01:04:14,764 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 312 selfloop transitions, 275 changer transitions 0/590 dead transitions. [2025-01-10 01:04:14,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 590 transitions, 9959 flow [2025-01-10 01:04:14,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-10 01:04:14,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-01-10 01:04:14,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 176 transitions. [2025-01-10 01:04:14,765 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2025-01-10 01:04:14,765 INFO L175 Difference]: Start difference. First operand has 106 places, 333 transitions, 5254 flow. Second operand 14 states and 176 transitions. [2025-01-10 01:04:14,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 590 transitions, 9959 flow [2025-01-10 01:04:14,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 590 transitions, 9528 flow, removed 212 selfloop flow, removed 1 redundant places. [2025-01-10 01:04:14,898 INFO L231 Difference]: Finished difference. Result has 124 places, 432 transitions, 7385 flow [2025-01-10 01:04:14,898 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=4891, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7385, PETRI_PLACES=124, PETRI_TRANSITIONS=432} [2025-01-10 01:04:14,899 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 101 predicate places. [2025-01-10 01:04:14,899 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 432 transitions, 7385 flow [2025-01-10 01:04:14,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:14,899 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:14,899 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:14,905 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 [2025-01-10 01:04:15,100 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,SelfDestructingSolverStorable9 [2025-01-10 01:04:15,100 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:04:15,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:15,100 INFO L85 PathProgramCache]: Analyzing trace with hash -371738382, now seen corresponding path program 3 times [2025-01-10 01:04:15,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:15,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80032925] [2025-01-10 01:04:15,101 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:04:15,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:15,104 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-01-10 01:04:15,112 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 01:04:15,113 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-10 01:04:15,113 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:15,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:15,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:15,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80032925] [2025-01-10 01:04:15,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80032925] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:15,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128935265] [2025-01-10 01:04:15,464 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:04:15,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:15,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:15,466 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) [2025-01-10 01:04:15,467 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 [2025-01-10 01:04:15,494 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-01-10 01:04:15,528 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 01:04:15,528 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-10 01:04:15,529 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:15,529 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-10 01:04:15,530 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:15,837 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:15,837 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:16,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:04:16,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128935265] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:04:16,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:04:16,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 16 [2025-01-10 01:04:16,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438087861] [2025-01-10 01:04:16,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:04:16,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-10 01:04:16,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:16,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-10 01:04:16,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2025-01-10 01:04:16,143 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2025-01-10 01:04:16,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 432 transitions, 7385 flow. Second operand has 17 states, 17 states have (on average 8.411764705882353) internal successors, (143), 17 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:16,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:16,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2025-01-10 01:04:16,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:18,383 INFO L124 PetriNetUnfolderBase]: 3199/5860 cut-off events. [2025-01-10 01:04:18,384 INFO L125 PetriNetUnfolderBase]: For 64624/64624 co-relation queries the response was YES. [2025-01-10 01:04:18,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40989 conditions, 5860 events. 3199/5860 cut-off events. For 64624/64624 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 42563 event pairs, 246 based on Foata normal form. 14/5872 useless extension candidates. Maximal degree in co-relation 40376. Up to 4262 conditions per place. [2025-01-10 01:04:18,423 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 557 selfloop transitions, 194 changer transitions 16/770 dead transitions. [2025-01-10 01:04:18,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 770 transitions, 13836 flow [2025-01-10 01:04:18,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-10 01:04:18,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-01-10 01:04:18,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 312 transitions. [2025-01-10 01:04:18,425 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6446280991735537 [2025-01-10 01:04:18,425 INFO L175 Difference]: Start difference. First operand has 124 places, 432 transitions, 7385 flow. Second operand 22 states and 312 transitions. [2025-01-10 01:04:18,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 770 transitions, 13836 flow [2025-01-10 01:04:18,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 770 transitions, 13603 flow, removed 111 selfloop flow, removed 2 redundant places. [2025-01-10 01:04:18,735 INFO L231 Difference]: Finished difference. Result has 157 places, 597 transitions, 11175 flow [2025-01-10 01:04:18,736 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=7256, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=11175, PETRI_PLACES=157, PETRI_TRANSITIONS=597} [2025-01-10 01:04:18,736 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 134 predicate places. [2025-01-10 01:04:18,736 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 597 transitions, 11175 flow [2025-01-10 01:04:18,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.411764705882353) internal successors, (143), 17 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:18,737 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:18,737 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:18,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-01-10 01:04:18,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:18,938 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:04:18,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:18,938 INFO L85 PathProgramCache]: Analyzing trace with hash -971635774, now seen corresponding path program 4 times [2025-01-10 01:04:18,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:18,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138393008] [2025-01-10 01:04:18,939 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 01:04:18,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:18,944 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-01-10 01:04:18,952 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 01:04:18,955 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 01:04:18,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:19,195 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:19,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:19,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138393008] [2025-01-10 01:04:19,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138393008] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:19,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174430960] [2025-01-10 01:04:19,198 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 01:04:19,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:19,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:19,201 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) [2025-01-10 01:04:19,201 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 [2025-01-10 01:04:19,230 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-01-10 01:04:19,247 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 01:04:19,248 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 01:04:19,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:19,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-10 01:04:19,250 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:19,519 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:19,519 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:19,593 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:04:19,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174430960] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:04:19,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:04:19,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 13 [2025-01-10 01:04:19,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559689891] [2025-01-10 01:04:19,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:04:19,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-10 01:04:19,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:19,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-10 01:04:19,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2025-01-10 01:04:19,595 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2025-01-10 01:04:19,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 597 transitions, 11175 flow. Second operand has 14 states, 14 states have (on average 8.428571428571429) internal successors, (118), 14 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:19,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:19,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2025-01-10 01:04:19,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:21,689 INFO L124 PetriNetUnfolderBase]: 4602/8512 cut-off events. [2025-01-10 01:04:21,690 INFO L125 PetriNetUnfolderBase]: For 121426/121426 co-relation queries the response was YES. [2025-01-10 01:04:21,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63041 conditions, 8512 events. 4602/8512 cut-off events. For 121426/121426 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 64531 event pairs, 385 based on Foata normal form. 39/8549 useless extension candidates. Maximal degree in co-relation 62031. Up to 5334 conditions per place. [2025-01-10 01:04:21,751 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 715 selfloop transitions, 318 changer transitions 24/1060 dead transitions. [2025-01-10 01:04:21,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 1060 transitions, 21146 flow [2025-01-10 01:04:21,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-10 01:04:21,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-01-10 01:04:21,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 262 transitions. [2025-01-10 01:04:21,753 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6267942583732058 [2025-01-10 01:04:21,753 INFO L175 Difference]: Start difference. First operand has 157 places, 597 transitions, 11175 flow. Second operand 19 states and 262 transitions. [2025-01-10 01:04:21,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 1060 transitions, 21146 flow [2025-01-10 01:04:22,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 1060 transitions, 20308 flow, removed 409 selfloop flow, removed 3 redundant places. [2025-01-10 01:04:22,510 INFO L231 Difference]: Finished difference. Result has 182 places, 834 transitions, 16724 flow [2025-01-10 01:04:22,511 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=10514, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=16724, PETRI_PLACES=182, PETRI_TRANSITIONS=834} [2025-01-10 01:04:22,512 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 159 predicate places. [2025-01-10 01:04:22,513 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 834 transitions, 16724 flow [2025-01-10 01:04:22,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.428571428571429) internal successors, (118), 14 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:22,513 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:22,513 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:22,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-10 01:04:22,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:22,717 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:04:22,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:22,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1919260946, now seen corresponding path program 5 times [2025-01-10 01:04:22,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:22,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035357969] [2025-01-10 01:04:22,718 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 01:04:22,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:22,723 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-01-10 01:04:22,731 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 01:04:22,731 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:04:22,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:22,784 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:04:22,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:22,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035357969] [2025-01-10 01:04:22,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035357969] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:22,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509586622] [2025-01-10 01:04:22,785 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 01:04:22,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:22,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:22,787 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) [2025-01-10 01:04:22,793 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 [2025-01-10 01:04:22,816 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-01-10 01:04:22,945 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 01:04:22,945 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:04:22,945 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:22,946 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 01:04:22,946 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:23,014 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:04:23,015 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:23,049 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:04:23,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509586622] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:04:23,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:04:23,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-01-10 01:04:23,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817918826] [2025-01-10 01:04:23,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:04:23,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-10 01:04:23,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:23,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-10 01:04:23,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-01-10 01:04:23,052 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2025-01-10 01:04:23,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 834 transitions, 16724 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 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) [2025-01-10 01:04:23,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:23,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2025-01-10 01:04:23,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:25,521 INFO L124 PetriNetUnfolderBase]: 5466/9965 cut-off events. [2025-01-10 01:04:25,521 INFO L125 PetriNetUnfolderBase]: For 159828/159828 co-relation queries the response was YES. [2025-01-10 01:04:25,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78626 conditions, 9965 events. 5466/9965 cut-off events. For 159828/159828 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 76832 event pairs, 369 based on Foata normal form. 142/10105 useless extension candidates. Maximal degree in co-relation 78515. Up to 4062 conditions per place. [2025-01-10 01:04:25,646 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 727 selfloop transitions, 607 changer transitions 0/1337 dead transitions. [2025-01-10 01:04:25,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 1337 transitions, 28068 flow [2025-01-10 01:04:25,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-10 01:04:25,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-01-10 01:04:25,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 177 transitions. [2025-01-10 01:04:25,648 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5746753246753247 [2025-01-10 01:04:25,648 INFO L175 Difference]: Start difference. First operand has 182 places, 834 transitions, 16724 flow. Second operand 14 states and 177 transitions. [2025-01-10 01:04:25,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 1337 transitions, 28068 flow [2025-01-10 01:04:27,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 1337 transitions, 27163 flow, removed 424 selfloop flow, removed 10 redundant places. [2025-01-10 01:04:27,106 INFO L231 Difference]: Finished difference. Result has 191 places, 1023 transitions, 22258 flow [2025-01-10 01:04:27,107 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=15993, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=834, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=427, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=22258, PETRI_PLACES=191, PETRI_TRANSITIONS=1023} [2025-01-10 01:04:27,107 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 168 predicate places. [2025-01-10 01:04:27,107 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 1023 transitions, 22258 flow [2025-01-10 01:04:27,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 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) [2025-01-10 01:04:27,108 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:27,108 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:27,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-10 01:04:27,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:27,308 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:04:27,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:27,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1480484298, now seen corresponding path program 6 times [2025-01-10 01:04:27,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:27,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990170827] [2025-01-10 01:04:27,309 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 01:04:27,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:27,313 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-01-10 01:04:27,319 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 01:04:27,319 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-10 01:04:27,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:27,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:27,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:27,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990170827] [2025-01-10 01:04:27,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990170827] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:27,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392596217] [2025-01-10 01:04:27,541 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 01:04:27,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:27,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:27,545 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) [2025-01-10 01:04:27,549 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 [2025-01-10 01:04:27,576 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-01-10 01:04:27,599 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 01:04:27,599 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-10 01:04:27,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:27,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-10 01:04:27,604 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:29,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:29,765 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:30,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:04:30,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392596217] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:04:30,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:04:30,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 16 [2025-01-10 01:04:30,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262045312] [2025-01-10 01:04:30,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:04:30,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-10 01:04:30,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:30,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-10 01:04:30,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2025-01-10 01:04:30,011 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2025-01-10 01:04:30,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 1023 transitions, 22258 flow. Second operand has 17 states, 17 states have (on average 8.411764705882353) internal successors, (143), 17 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:30,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:30,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2025-01-10 01:04:30,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:34,567 INFO L124 PetriNetUnfolderBase]: 6156/11212 cut-off events. [2025-01-10 01:04:34,568 INFO L125 PetriNetUnfolderBase]: For 240688/240688 co-relation queries the response was YES. [2025-01-10 01:04:34,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98140 conditions, 11212 events. 6156/11212 cut-off events. For 240688/240688 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 88391 event pairs, 462 based on Foata normal form. 10/11220 useless extension candidates. Maximal degree in co-relation 94644. Up to 5795 conditions per place. [2025-01-10 01:04:34,705 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 504 selfloop transitions, 823 changer transitions 13/1343 dead transitions. [2025-01-10 01:04:34,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 1343 transitions, 31467 flow [2025-01-10 01:04:34,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-01-10 01:04:34,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-01-10 01:04:34,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 257 transitions. [2025-01-10 01:04:34,707 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5840909090909091 [2025-01-10 01:04:34,708 INFO L175 Difference]: Start difference. First operand has 191 places, 1023 transitions, 22258 flow. Second operand 20 states and 257 transitions. [2025-01-10 01:04:34,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 1343 transitions, 31467 flow [2025-01-10 01:04:37,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 1343 transitions, 31158 flow, removed 141 selfloop flow, removed 3 redundant places. [2025-01-10 01:04:37,074 INFO L231 Difference]: Finished difference. Result has 217 places, 1247 transitions, 30990 flow [2025-01-10 01:04:37,075 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=22007, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1023, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=620, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=30990, PETRI_PLACES=217, PETRI_TRANSITIONS=1247} [2025-01-10 01:04:37,076 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 194 predicate places. [2025-01-10 01:04:37,076 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 1247 transitions, 30990 flow [2025-01-10 01:04:37,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.411764705882353) internal successors, (143), 17 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:37,076 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:37,076 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:37,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-01-10 01:04:37,281 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,SelfDestructingSolverStorable13 [2025-01-10 01:04:37,281 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:04:37,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:37,282 INFO L85 PathProgramCache]: Analyzing trace with hash 217873456, now seen corresponding path program 7 times [2025-01-10 01:04:37,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:37,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429985993] [2025-01-10 01:04:37,282 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-10 01:04:37,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:37,287 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-10 01:04:37,292 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 01:04:37,292 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:04:37,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:37,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:04:37,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:37,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429985993] [2025-01-10 01:04:37,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429985993] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:04:37,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:04:37,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 01:04:37,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095107180] [2025-01-10 01:04:37,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:04:37,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 01:04:37,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:37,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 01:04:37,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 01:04:37,339 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2025-01-10 01:04:37,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 1247 transitions, 30990 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:37,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:37,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2025-01-10 01:04:37,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:41,584 INFO L124 PetriNetUnfolderBase]: 6160/11268 cut-off events. [2025-01-10 01:04:41,584 INFO L125 PetriNetUnfolderBase]: For 281033/281033 co-relation queries the response was YES. [2025-01-10 01:04:41,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105456 conditions, 11268 events. 6160/11268 cut-off events. For 281033/281033 co-relation queries the response was YES. Maximal size of possible extension queue 800. Compared 90223 event pairs, 149 based on Foata normal form. 54/11319 useless extension candidates. Maximal degree in co-relation 101607. Up to 3342 conditions per place. [2025-01-10 01:04:41,687 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 1018 selfloop transitions, 500 changer transitions 0/1521 dead transitions. [2025-01-10 01:04:41,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 1521 transitions, 37747 flow [2025-01-10 01:04:41,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 01:04:41,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 01:04:41,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2025-01-10 01:04:41,689 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2025-01-10 01:04:41,689 INFO L175 Difference]: Start difference. First operand has 217 places, 1247 transitions, 30990 flow. Second operand 7 states and 91 transitions. [2025-01-10 01:04:41,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 1521 transitions, 37747 flow [2025-01-10 01:04:44,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 1521 transitions, 36523 flow, removed 603 selfloop flow, removed 5 redundant places. [2025-01-10 01:04:44,073 INFO L231 Difference]: Finished difference. Result has 222 places, 1252 transitions, 31825 flow [2025-01-10 01:04:44,074 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=29540, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=478, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=744, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31825, PETRI_PLACES=222, PETRI_TRANSITIONS=1252} [2025-01-10 01:04:44,075 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 199 predicate places. [2025-01-10 01:04:44,075 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 1252 transitions, 31825 flow [2025-01-10 01:04:44,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:44,075 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:44,075 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:44,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-01-10 01:04:44,075 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:04:44,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:44,076 INFO L85 PathProgramCache]: Analyzing trace with hash 944713206, now seen corresponding path program 8 times [2025-01-10 01:04:44,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:44,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604942768] [2025-01-10 01:04:44,076 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:04:44,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:44,078 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-01-10 01:04:44,084 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 01:04:44,084 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:04:44,084 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:44,277 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:44,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:44,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604942768] [2025-01-10 01:04:44,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604942768] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:44,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282098998] [2025-01-10 01:04:44,278 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:04:44,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:44,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:44,280 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) [2025-01-10 01:04:44,281 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 [2025-01-10 01:04:44,306 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-01-10 01:04:44,323 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 01:04:44,323 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:04:44,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:44,324 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-10 01:04:44,325 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:45,849 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:45,849 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:46,153 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:46,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282098998] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:04:46,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:04:46,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 17 [2025-01-10 01:04:46,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670016616] [2025-01-10 01:04:46,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:04:46,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-10 01:04:46,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:46,155 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-10 01:04:46,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2025-01-10 01:04:46,155 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2025-01-10 01:04:46,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 1252 transitions, 31825 flow. Second operand has 18 states, 18 states have (on average 8.277777777777779) internal successors, (149), 18 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:46,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:46,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2025-01-10 01:04:46,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:52,322 INFO L124 PetriNetUnfolderBase]: 7062/12873 cut-off events. [2025-01-10 01:04:52,322 INFO L125 PetriNetUnfolderBase]: For 356587/356587 co-relation queries the response was YES. [2025-01-10 01:04:52,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126533 conditions, 12873 events. 7062/12873 cut-off events. For 356587/356587 co-relation queries the response was YES. Maximal size of possible extension queue 943. Compared 104484 event pairs, 511 based on Foata normal form. 17/12888 useless extension candidates. Maximal degree in co-relation 122125. Up to 6054 conditions per place. [2025-01-10 01:04:52,465 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 565 selfloop transitions, 1092 changer transitions 18/1678 dead transitions. [2025-01-10 01:04:52,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 1678 transitions, 45767 flow [2025-01-10 01:04:52,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-01-10 01:04:52,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-01-10 01:04:52,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 311 transitions. [2025-01-10 01:04:52,467 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5654545454545454 [2025-01-10 01:04:52,467 INFO L175 Difference]: Start difference. First operand has 222 places, 1252 transitions, 31825 flow. Second operand 25 states and 311 transitions. [2025-01-10 01:04:52,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 1678 transitions, 45767 flow [2025-01-10 01:04:55,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 1678 transitions, 45314 flow, removed 23 selfloop flow, removed 1 redundant places. [2025-01-10 01:04:55,886 INFO L231 Difference]: Finished difference. Result has 257 places, 1553 transitions, 44710 flow [2025-01-10 01:04:55,887 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=31508, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=819, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=44710, PETRI_PLACES=257, PETRI_TRANSITIONS=1553} [2025-01-10 01:04:55,887 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 234 predicate places. [2025-01-10 01:04:55,887 INFO L471 AbstractCegarLoop]: Abstraction has has 257 places, 1553 transitions, 44710 flow [2025-01-10 01:04:55,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.277777777777779) internal successors, (149), 18 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:55,887 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:55,888 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:55,895 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-01-10 01:04:56,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-01-10 01:04:56,089 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:04:56,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:56,089 INFO L85 PathProgramCache]: Analyzing trace with hash 790336562, now seen corresponding path program 9 times [2025-01-10 01:04:56,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:56,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084024500] [2025-01-10 01:04:56,089 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:04:56,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:56,093 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-01-10 01:04:56,104 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 01:04:56,105 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-10 01:04:56,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:56,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:56,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:56,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084024500] [2025-01-10 01:04:56,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084024500] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:56,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879264771] [2025-01-10 01:04:56,358 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:04:56,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:56,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:56,362 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:04:56,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-10 01:04:56,391 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-01-10 01:04:56,415 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 01:04:56,416 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-10 01:04:56,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:56,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-10 01:04:56,418 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:05:00,710 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:05:00,710 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:05:01,017 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:05:01,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879264771] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:05:01,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:05:01,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 17 [2025-01-10 01:05:01,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235593648] [2025-01-10 01:05:01,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:05:01,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-10 01:05:01,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:05:01,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-10 01:05:01,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=241, Unknown=1, NotChecked=0, Total=306 [2025-01-10 01:05:01,020 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2025-01-10 01:05:01,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 1553 transitions, 44710 flow. Second operand has 18 states, 18 states have (on average 8.277777777777779) internal successors, (149), 18 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:05:01,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:05:01,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2025-01-10 01:05:01,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:05:06,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-10 01:05:10,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-10 01:05:17,984 INFO L124 PetriNetUnfolderBase]: 8445/15331 cut-off events. [2025-01-10 01:05:17,984 INFO L125 PetriNetUnfolderBase]: For 509079/509079 co-relation queries the response was YES. [2025-01-10 01:05:18,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162494 conditions, 15331 events. 8445/15331 cut-off events. For 509079/509079 co-relation queries the response was YES. Maximal size of possible extension queue 1149. Compared 127789 event pairs, 664 based on Foata normal form. 19/15347 useless extension candidates. Maximal degree in co-relation 160044. Up to 7256 conditions per place. [2025-01-10 01:05:18,136 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 660 selfloop transitions, 1421 changer transitions 23/2107 dead transitions. [2025-01-10 01:05:18,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 2107 transitions, 65270 flow [2025-01-10 01:05:18,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-01-10 01:05:18,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2025-01-10 01:05:18,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 331 transitions. [2025-01-10 01:05:18,138 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5572390572390572 [2025-01-10 01:05:18,138 INFO L175 Difference]: Start difference. First operand has 257 places, 1553 transitions, 44710 flow. Second operand 27 states and 331 transitions. [2025-01-10 01:05:18,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 2107 transitions, 65270 flow [2025-01-10 01:05:23,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 2107 transitions, 61900 flow, removed 1613 selfloop flow, removed 5 redundant places. [2025-01-10 01:05:23,279 INFO L231 Difference]: Finished difference. Result has 292 places, 1976 transitions, 59645 flow [2025-01-10 01:05:23,280 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=42557, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1033, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=59645, PETRI_PLACES=292, PETRI_TRANSITIONS=1976} [2025-01-10 01:05:23,281 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 269 predicate places. [2025-01-10 01:05:23,281 INFO L471 AbstractCegarLoop]: Abstraction has has 292 places, 1976 transitions, 59645 flow [2025-01-10 01:05:23,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.277777777777779) internal successors, (149), 18 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:05:23,281 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:05:23,281 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:05:23,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-01-10 01:05:23,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-10 01:05:23,486 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:05:23,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:05:23,486 INFO L85 PathProgramCache]: Analyzing trace with hash -631322077, now seen corresponding path program 10 times [2025-01-10 01:05:23,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:05:23,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050576505] [2025-01-10 01:05:23,487 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 01:05:23,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:05:23,491 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-01-10 01:05:23,494 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 01:05:23,494 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 01:05:23,494 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:05:23,534 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 01:05:23,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:05:23,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050576505] [2025-01-10 01:05:23,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050576505] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:05:23,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523637187] [2025-01-10 01:05:23,535 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 01:05:23,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:05:23,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:05:23,541 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:05:23,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-10 01:05:23,567 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-01-10 01:05:23,576 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 01:05:23,576 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 01:05:23,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:05:23,577 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 01:05:23,577 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:05:23,644 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 01:05:23,645 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:05:23,673 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 01:05:23,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523637187] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:05:23,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:05:23,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-01-10 01:05:23,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037346674] [2025-01-10 01:05:23,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:05:23,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-10 01:05:23,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:05:23,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-10 01:05:23,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-01-10 01:05:23,674 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2025-01-10 01:05:23,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 1976 transitions, 59645 flow. Second operand has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:05:23,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:05:23,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2025-01-10 01:05:23,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:05:32,994 INFO L124 PetriNetUnfolderBase]: 8560/15211 cut-off events. [2025-01-10 01:05:32,994 INFO L125 PetriNetUnfolderBase]: For 545580/545580 co-relation queries the response was YES. [2025-01-10 01:05:33,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167831 conditions, 15211 events. 8560/15211 cut-off events. For 545580/545580 co-relation queries the response was YES. Maximal size of possible extension queue 1115. Compared 123107 event pairs, 615 based on Foata normal form. 1034/16243 useless extension candidates. Maximal degree in co-relation 166062. Up to 11466 conditions per place. [2025-01-10 01:05:33,250 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 1824 selfloop transitions, 510 changer transitions 0/2337 dead transitions. [2025-01-10 01:05:33,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 2337 transitions, 72745 flow [2025-01-10 01:05:33,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-10 01:05:33,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-01-10 01:05:33,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 171 transitions. [2025-01-10 01:05:33,252 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5979020979020979 [2025-01-10 01:05:33,252 INFO L175 Difference]: Start difference. First operand has 292 places, 1976 transitions, 59645 flow. Second operand 13 states and 171 transitions. [2025-01-10 01:05:33,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 2337 transitions, 72745 flow [2025-01-10 01:05:39,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 2337 transitions, 68667 flow, removed 2028 selfloop flow, removed 3 redundant places. [2025-01-10 01:05:39,690 INFO L231 Difference]: Finished difference. Result has 308 places, 2166 transitions, 62829 flow [2025-01-10 01:05:39,691 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=52875, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1901, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=62829, PETRI_PLACES=308, PETRI_TRANSITIONS=2166} [2025-01-10 01:05:39,692 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 285 predicate places. [2025-01-10 01:05:39,692 INFO L471 AbstractCegarLoop]: Abstraction has has 308 places, 2166 transitions, 62829 flow [2025-01-10 01:05:39,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:05:39,693 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:05:39,693 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:05:39,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-01-10 01:05:39,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-01-10 01:05:39,894 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:05:39,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:05:39,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1696856573, now seen corresponding path program 11 times [2025-01-10 01:05:39,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:05:39,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104310539] [2025-01-10 01:05:39,895 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 01:05:39,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:05:39,899 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 3 equivalence classes. [2025-01-10 01:05:39,900 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 7 of 20 statements. [2025-01-10 01:05:39,901 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:05:39,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:05:39,917 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-10 01:05:39,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:05:39,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104310539] [2025-01-10 01:05:39,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104310539] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:05:39,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308875251] [2025-01-10 01:05:39,917 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 01:05:39,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:05:39,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:05:39,921 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:05:39,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-10 01:05:39,944 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 3 equivalence classes. [2025-01-10 01:05:39,946 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 7 of 20 statements. [2025-01-10 01:05:39,946 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:05:39,947 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:05:39,947 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 01:05:39,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:05:39,964 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-10 01:05:39,964 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:05:39,976 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-10 01:05:39,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308875251] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:05:39,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:05:39,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2025-01-10 01:05:39,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267086235] [2025-01-10 01:05:39,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:05:39,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 01:05:39,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:05:39,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 01:05:39,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-10 01:05:39,978 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2025-01-10 01:05:39,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 2166 transitions, 62829 flow. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:05:39,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:05:39,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2025-01-10 01:05:39,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand