./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/bench-exp3x3.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/bench-exp3x3.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 21325645cf7d2c394d0eaa1628a16a96624f1addcdd1b56c7e8aa2473acfaf07 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 01:01:31,321 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 01:01:31,393 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-10 01:01:31,399 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 01:01:31,399 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 01:01:31,435 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 01:01:31,437 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 01:01:31,437 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 01:01:31,437 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 01:01:31,438 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 01:01:31,439 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 01:01:31,439 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 01:01:31,439 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 01:01:31,439 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 01:01:31,440 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 01:01:31,440 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 01:01:31,440 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 01:01:31,440 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 01:01:31,440 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 01:01:31,441 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 01:01:31,441 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 01:01:31,441 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 01:01:31,441 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 01:01:31,441 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 01:01:31,441 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 01:01:31,441 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 01:01:31,441 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 01:01:31,441 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 01:01:31,441 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 01:01:31,442 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 01:01:31,442 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 01:01:31,442 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 01:01:31,442 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 01:01:31,442 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:01:31,443 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 01:01:31,443 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 01:01:31,443 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 01:01:31,443 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 01:01:31,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:01:31,443 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 01:01:31,443 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 01:01:31,443 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 01:01:31,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 01:01:31,444 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 01:01:31,444 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 01:01:31,444 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 01:01:31,444 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 01:01:31,444 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 -> 21325645cf7d2c394d0eaa1628a16a96624f1addcdd1b56c7e8aa2473acfaf07 [2025-01-10 01:01:31,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 01:01:31,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 01:01:31,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 01:01:31,740 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 01:01:31,741 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 01:01:31,742 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp3x3.wvr.c [2025-01-10 01:01:32,985 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/70f73b700/5b9edef7e48946ce8d37796c8c8150b9/FLAG5465dc695 [2025-01-10 01:01:33,249 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 01:01:33,249 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3.wvr.c [2025-01-10 01:01:33,271 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/70f73b700/5b9edef7e48946ce8d37796c8c8150b9/FLAG5465dc695 [2025-01-10 01:01:33,319 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/70f73b700/5b9edef7e48946ce8d37796c8c8150b9 [2025-01-10 01:01:33,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 01:01:33,324 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 01:01:33,326 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 01:01:33,326 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 01:01:33,330 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 01:01:33,331 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:01:33" (1/1) ... [2025-01-10 01:01:33,332 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c77b6cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:01:33, skipping insertion in model container [2025-01-10 01:01:33,332 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:01:33" (1/1) ... [2025-01-10 01:01:33,351 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 01:01:33,522 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 01:01:33,532 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 01:01:33,553 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 01:01:33,564 INFO L204 MainTranslator]: Completed translation [2025-01-10 01:01:33,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:01:33 WrapperNode [2025-01-10 01:01:33,565 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 01:01:33,566 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 01:01:33,566 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 01:01:33,566 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 01:01:33,571 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:01:33" (1/1) ... [2025-01-10 01:01:33,577 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:01:33" (1/1) ... [2025-01-10 01:01:33,589 INFO L138 Inliner]: procedures = 21, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 97 [2025-01-10 01:01:33,590 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 01:01:33,590 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 01:01:33,590 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 01:01:33,590 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 01:01:33,596 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:01:33" (1/1) ... [2025-01-10 01:01:33,596 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:01:33" (1/1) ... [2025-01-10 01:01:33,598 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:01:33" (1/1) ... [2025-01-10 01:01:33,622 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 01:01:33,622 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:01:33" (1/1) ... [2025-01-10 01:01:33,622 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:01:33" (1/1) ... [2025-01-10 01:01:33,627 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:01:33" (1/1) ... [2025-01-10 01:01:33,628 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:01:33" (1/1) ... [2025-01-10 01:01:33,634 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:01:33" (1/1) ... [2025-01-10 01:01:33,635 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:01:33" (1/1) ... [2025-01-10 01:01:33,636 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:01:33" (1/1) ... [2025-01-10 01:01:33,637 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 01:01:33,638 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 01:01:33,638 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 01:01:33,638 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 01:01:33,642 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:01:33" (1/1) ... [2025-01-10 01:01:33,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:01:33,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:01:33,667 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 01:01:33,670 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 01:01:33,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 01:01:33,690 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-10 01:01:33,690 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-10 01:01:33,690 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-10 01:01:33,691 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-10 01:01:33,691 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-01-10 01:01:33,691 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-01-10 01:01:33,691 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-01-10 01:01:33,691 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-01-10 01:01:33,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 01:01:33,691 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-01-10 01:01:33,692 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-01-10 01:01:33,692 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-01-10 01:01:33,692 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-01-10 01:01:33,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 01:01:33,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 01:01:33,694 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 01:01:33,802 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 01:01:33,805 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 01:01:34,076 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 01:01:34,079 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 01:01:34,246 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 01:01:34,247 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 01:01:34,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:01:34 BoogieIcfgContainer [2025-01-10 01:01:34,247 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 01:01:34,249 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 01:01:34,253 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 01:01:34,257 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 01:01:34,257 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:01:33" (1/3) ... [2025-01-10 01:01:34,259 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e7c651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:01:34, skipping insertion in model container [2025-01-10 01:01:34,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:01:33" (2/3) ... [2025-01-10 01:01:34,260 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e7c651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:01:34, skipping insertion in model container [2025-01-10 01:01:34,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:01:34" (3/3) ... [2025-01-10 01:01:34,261 INFO L128 eAbstractionObserver]: Analyzing ICFG bench-exp3x3.wvr.c [2025-01-10 01:01:34,271 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 01:01:34,273 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG bench-exp3x3.wvr.c that has 7 procedures, 43 locations, 1 initial locations, 6 loop locations, and 2 error locations. [2025-01-10 01:01:34,273 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 01:01:34,348 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2025-01-10 01:01:34,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 48 transitions, 138 flow [2025-01-10 01:01:34,420 INFO L124 PetriNetUnfolderBase]: 6/42 cut-off events. [2025-01-10 01:01:34,422 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-01-10 01:01:34,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 42 events. 6/42 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2025-01-10 01:01:34,425 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 48 transitions, 138 flow [2025-01-10 01:01:34,432 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 41 transitions, 118 flow [2025-01-10 01:01:34,442 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 01:01:34,450 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;@2614b57b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 01:01:34,451 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2025-01-10 01:01:34,467 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 01:01:34,467 INFO L124 PetriNetUnfolderBase]: 6/38 cut-off events. [2025-01-10 01:01:34,468 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-01-10 01:01:34,469 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:01:34,469 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:01:34,470 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-01-10 01:01:34,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:01:34,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1950351382, now seen corresponding path program 1 times [2025-01-10 01:01:34,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:01:34,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527932156] [2025-01-10 01:01:34,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:01:34,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:01:34,556 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-01-10 01:01:34,596 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-01-10 01:01:34,596 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:01:34,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:01:35,145 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 01:01:35,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:01:35,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527932156] [2025-01-10 01:01:35,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527932156] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:01:35,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:01:35,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 01:01:35,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512987931] [2025-01-10 01:01:35,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:01:35,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 01:01:35,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:01:35,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 01:01:35,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 01:01:35,180 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-01-10 01:01:35,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:01:35,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:01:35,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-01-10 01:01:35,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:01:37,033 INFO L124 PetriNetUnfolderBase]: 18895/21812 cut-off events. [2025-01-10 01:01:37,033 INFO L125 PetriNetUnfolderBase]: For 1449/1449 co-relation queries the response was YES. [2025-01-10 01:01:37,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44837 conditions, 21812 events. 18895/21812 cut-off events. For 1449/1449 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 69836 event pairs, 1570 based on Foata normal form. 2/11925 useless extension candidates. Maximal degree in co-relation 38647. Up to 20725 conditions per place. [2025-01-10 01:01:37,178 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 53 selfloop transitions, 7 changer transitions 1/68 dead transitions. [2025-01-10 01:01:37,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 68 transitions, 327 flow [2025-01-10 01:01:37,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 01:01:37,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 01:01:37,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2025-01-10 01:01:37,194 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2025-01-10 01:01:37,196 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 118 flow. Second operand 3 states and 105 transitions. [2025-01-10 01:01:37,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 68 transitions, 327 flow [2025-01-10 01:01:37,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 68 transitions, 281 flow, removed 0 selfloop flow, removed 12 redundant places. [2025-01-10 01:01:37,223 INFO L231 Difference]: Finished difference. Result has 43 places, 45 transitions, 137 flow [2025-01-10 01:01:37,226 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=43, PETRI_TRANSITIONS=45} [2025-01-10 01:01:37,229 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -11 predicate places. [2025-01-10 01:01:37,231 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 45 transitions, 137 flow [2025-01-10 01:01:37,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:01:37,232 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:01:37,232 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:01:37,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 01:01:37,232 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-01-10 01:01:37,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:01:37,233 INFO L85 PathProgramCache]: Analyzing trace with hash -2136000401, now seen corresponding path program 1 times [2025-01-10 01:01:37,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:01:37,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777590547] [2025-01-10 01:01:37,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:01:37,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:01:37,247 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-10 01:01:37,272 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-10 01:01:37,273 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:01:37,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:01:37,478 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 01:01:37,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:01:37,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777590547] [2025-01-10 01:01:37,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777590547] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:01:37,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:01:37,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 01:01:37,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742859198] [2025-01-10 01:01:37,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:01:37,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 01:01:37,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:01:37,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 01:01:37,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 01:01:37,487 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-01-10 01:01:37,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:01:37,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:01:37,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-01-10 01:01:37,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:01:39,439 INFO L124 PetriNetUnfolderBase]: 23789/27638 cut-off events. [2025-01-10 01:01:39,439 INFO L125 PetriNetUnfolderBase]: For 7886/7886 co-relation queries the response was YES. [2025-01-10 01:01:39,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68673 conditions, 27638 events. 23789/27638 cut-off events. For 7886/7886 co-relation queries the response was YES. Maximal size of possible extension queue 883. Compared 96179 event pairs, 1823 based on Foata normal form. 390/27956 useless extension candidates. Maximal degree in co-relation 18860. Up to 12218 conditions per place. [2025-01-10 01:01:39,579 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 105 selfloop transitions, 10 changer transitions 0/122 dead transitions. [2025-01-10 01:01:39,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 122 transitions, 591 flow [2025-01-10 01:01:39,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 01:01:39,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 01:01:39,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 175 transitions. [2025-01-10 01:01:39,583 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2025-01-10 01:01:39,583 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 137 flow. Second operand 5 states and 175 transitions. [2025-01-10 01:01:39,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 122 transitions, 591 flow [2025-01-10 01:01:39,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 122 transitions, 579 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 01:01:39,588 INFO L231 Difference]: Finished difference. Result has 48 places, 52 transitions, 195 flow [2025-01-10 01:01:39,588 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=195, PETRI_PLACES=48, PETRI_TRANSITIONS=52} [2025-01-10 01:01:39,589 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -6 predicate places. [2025-01-10 01:01:39,589 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 52 transitions, 195 flow [2025-01-10 01:01:39,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:01:39,591 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:01:39,591 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:01:39,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 01:01:39,592 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-01-10 01:01:39,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:01:39,593 INFO L85 PathProgramCache]: Analyzing trace with hash 520682580, now seen corresponding path program 1 times [2025-01-10 01:01:39,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:01:39,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699208048] [2025-01-10 01:01:39,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:01:39,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:01:39,610 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-10 01:01:39,630 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-10 01:01:39,631 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:01:39,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:01:39,753 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 01:01:39,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:01:39,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699208048] [2025-01-10 01:01:39,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699208048] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:01:39,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217617082] [2025-01-10 01:01:39,754 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:01:39,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:01:39,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:01:39,758 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 01:01:39,759 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 01:01:39,825 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-10 01:01:39,858 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-10 01:01:39,859 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:01:39,859 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:01:39,861 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 01:01:39,866 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:01:40,249 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 01:01:40,253 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:01:40,391 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 01:01:40,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217617082] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:01:40,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:01:40,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2025-01-10 01:01:40,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142225570] [2025-01-10 01:01:40,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:01:40,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 01:01:40,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:01:40,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 01:01:40,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-10 01:01:40,393 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-01-10 01:01:40,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 52 transitions, 195 flow. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 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 01:01:40,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:01:40,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-01-10 01:01:40,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:01:42,576 INFO L124 PetriNetUnfolderBase]: 31931/37769 cut-off events. [2025-01-10 01:01:42,576 INFO L125 PetriNetUnfolderBase]: For 32928/32931 co-relation queries the response was YES. [2025-01-10 01:01:42,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109484 conditions, 37769 events. 31931/37769 cut-off events. For 32928/32931 co-relation queries the response was YES. Maximal size of possible extension queue 1319. Compared 148696 event pairs, 4697 based on Foata normal form. 768/38206 useless extension candidates. Maximal degree in co-relation 55485. Up to 18184 conditions per place. [2025-01-10 01:01:42,785 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 122 selfloop transitions, 8 changer transitions 0/137 dead transitions. [2025-01-10 01:01:42,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 137 transitions, 796 flow [2025-01-10 01:01:42,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 01:01:42,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 01:01:42,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 171 transitions. [2025-01-10 01:01:42,790 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7125 [2025-01-10 01:01:42,790 INFO L175 Difference]: Start difference. First operand has 48 places, 52 transitions, 195 flow. Second operand 5 states and 171 transitions. [2025-01-10 01:01:42,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 137 transitions, 796 flow [2025-01-10 01:01:42,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 137 transitions, 796 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 01:01:42,800 INFO L231 Difference]: Finished difference. Result has 55 places, 57 transitions, 250 flow [2025-01-10 01:01:42,801 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=250, PETRI_PLACES=55, PETRI_TRANSITIONS=57} [2025-01-10 01:01:42,802 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 1 predicate places. [2025-01-10 01:01:42,802 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 57 transitions, 250 flow [2025-01-10 01:01:42,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 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 01:01:42,802 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:01:42,803 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:01:42,812 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 01:01:43,007 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 01:01:43,007 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-01-10 01:01:43,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:01:43,008 INFO L85 PathProgramCache]: Analyzing trace with hash -202975716, now seen corresponding path program 2 times [2025-01-10 01:01:43,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:01:43,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963873844] [2025-01-10 01:01:43,008 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:01:43,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:01:43,020 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-01-10 01:01:43,039 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-01-10 01:01:43,040 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:01:43,040 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:01:43,152 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 01:01:43,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:01:43,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963873844] [2025-01-10 01:01:43,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963873844] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:01:43,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:01:43,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 01:01:43,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407009102] [2025-01-10 01:01:43,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:01:43,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 01:01:43,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:01:43,155 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 01:01:43,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 01:01:43,155 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-01-10 01:01:43,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 57 transitions, 250 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:01:43,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:01:43,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-01-10 01:01:43,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:01:44,603 INFO L124 PetriNetUnfolderBase]: 28317/33309 cut-off events. [2025-01-10 01:01:44,604 INFO L125 PetriNetUnfolderBase]: For 42537/42540 co-relation queries the response was YES. [2025-01-10 01:01:44,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110644 conditions, 33309 events. 28317/33309 cut-off events. For 42537/42540 co-relation queries the response was YES. Maximal size of possible extension queue 1151. Compared 124334 event pairs, 1761 based on Foata normal form. 416/33610 useless extension candidates. Maximal degree in co-relation 57903. Up to 14775 conditions per place. [2025-01-10 01:01:44,975 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 126 selfloop transitions, 11 changer transitions 0/144 dead transitions. [2025-01-10 01:01:44,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 144 transitions, 903 flow [2025-01-10 01:01:44,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 01:01:44,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 01:01:44,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 168 transitions. [2025-01-10 01:01:44,977 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7 [2025-01-10 01:01:44,977 INFO L175 Difference]: Start difference. First operand has 55 places, 57 transitions, 250 flow. Second operand 5 states and 168 transitions. [2025-01-10 01:01:44,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 144 transitions, 903 flow [2025-01-10 01:01:45,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 144 transitions, 903 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 01:01:45,113 INFO L231 Difference]: Finished difference. Result has 60 places, 62 transitions, 311 flow [2025-01-10 01:01:45,113 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=311, PETRI_PLACES=60, PETRI_TRANSITIONS=62} [2025-01-10 01:01:45,114 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 6 predicate places. [2025-01-10 01:01:45,114 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 62 transitions, 311 flow [2025-01-10 01:01:45,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:01:45,114 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:01:45,114 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:01:45,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-10 01:01:45,114 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-01-10 01:01:45,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:01:45,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1524396482, now seen corresponding path program 1 times [2025-01-10 01:01:45,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:01:45,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853936434] [2025-01-10 01:01:45,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:01:45,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:01:45,128 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-10 01:01:45,138 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-10 01:01:45,139 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:01:45,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:01:45,247 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 01:01:45,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:01:45,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853936434] [2025-01-10 01:01:45,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853936434] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:01:45,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974479258] [2025-01-10 01:01:45,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:01:45,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:01:45,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:01:45,250 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 01:01:45,255 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 01:01:45,323 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-10 01:01:45,358 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-10 01:01:45,359 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:01:45,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:01:45,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 01:01:45,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:01:45,574 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 01:01:45,574 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:01:45,661 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 01:01:45,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974479258] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:01:45,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:01:45,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2025-01-10 01:01:45,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916857250] [2025-01-10 01:01:45,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:01:45,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 01:01:45,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:01:45,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 01:01:45,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-10 01:01:45,664 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-01-10 01:01:45,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 62 transitions, 311 flow. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 0 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 01:01:45,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:01:45,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-01-10 01:01:45,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:01:47,913 INFO L124 PetriNetUnfolderBase]: 37477/44953 cut-off events. [2025-01-10 01:01:47,914 INFO L125 PetriNetUnfolderBase]: For 94849/94852 co-relation queries the response was YES. [2025-01-10 01:01:47,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162195 conditions, 44953 events. 37477/44953 cut-off events. For 94849/94852 co-relation queries the response was YES. Maximal size of possible extension queue 1695. Compared 192839 event pairs, 5646 based on Foata normal form. 776/45066 useless extension candidates. Maximal degree in co-relation 86727. Up to 20120 conditions per place. [2025-01-10 01:01:48,132 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 149 selfloop transitions, 8 changer transitions 0/164 dead transitions. [2025-01-10 01:01:48,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 164 transitions, 1206 flow [2025-01-10 01:01:48,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 01:01:48,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 01:01:48,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2025-01-10 01:01:48,133 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6708333333333333 [2025-01-10 01:01:48,133 INFO L175 Difference]: Start difference. First operand has 60 places, 62 transitions, 311 flow. Second operand 5 states and 161 transitions. [2025-01-10 01:01:48,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 164 transitions, 1206 flow [2025-01-10 01:01:48,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 164 transitions, 1166 flow, removed 12 selfloop flow, removed 1 redundant places. [2025-01-10 01:01:48,172 INFO L231 Difference]: Finished difference. Result has 66 places, 67 transitions, 353 flow [2025-01-10 01:01:48,172 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=353, PETRI_PLACES=66, PETRI_TRANSITIONS=67} [2025-01-10 01:01:48,173 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 12 predicate places. [2025-01-10 01:01:48,173 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 67 transitions, 353 flow [2025-01-10 01:01:48,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 0 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 01:01:48,173 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:01:48,173 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:01:48,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-10 01:01:48,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:01:48,374 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-01-10 01:01:48,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:01:48,374 INFO L85 PathProgramCache]: Analyzing trace with hash 949403365, now seen corresponding path program 1 times [2025-01-10 01:01:48,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:01:48,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213794637] [2025-01-10 01:01:48,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:01:48,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:01:48,381 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-10 01:01:48,388 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-10 01:01:48,389 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:01:48,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:01:48,456 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 01:01:48,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:01:48,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213794637] [2025-01-10 01:01:48,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213794637] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:01:48,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:01:48,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 01:01:48,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484434614] [2025-01-10 01:01:48,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:01:48,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 01:01:48,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:01:48,458 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 01:01:48,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 01:01:48,459 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-01-10 01:01:48,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 67 transitions, 353 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:01:48,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:01:48,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-01-10 01:01:48,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:01:50,872 INFO L124 PetriNetUnfolderBase]: 36895/43999 cut-off events. [2025-01-10 01:01:50,872 INFO L125 PetriNetUnfolderBase]: For 96490/96565 co-relation queries the response was YES. [2025-01-10 01:01:50,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174239 conditions, 43999 events. 36895/43999 cut-off events. For 96490/96565 co-relation queries the response was YES. Maximal size of possible extension queue 1651. Compared 184435 event pairs, 1928 based on Foata normal form. 594/44482 useless extension candidates. Maximal degree in co-relation 100837. Up to 19885 conditions per place. [2025-01-10 01:01:51,092 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 146 selfloop transitions, 8 changer transitions 0/161 dead transitions. [2025-01-10 01:01:51,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 161 transitions, 1138 flow [2025-01-10 01:01:51,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 01:01:51,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 01:01:51,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 166 transitions. [2025-01-10 01:01:51,093 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6916666666666667 [2025-01-10 01:01:51,093 INFO L175 Difference]: Start difference. First operand has 66 places, 67 transitions, 353 flow. Second operand 5 states and 166 transitions. [2025-01-10 01:01:51,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 161 transitions, 1138 flow [2025-01-10 01:01:51,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 161 transitions, 1138 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 01:01:51,360 INFO L231 Difference]: Finished difference. Result has 71 places, 66 transitions, 369 flow [2025-01-10 01:01:51,360 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=369, PETRI_PLACES=71, PETRI_TRANSITIONS=66} [2025-01-10 01:01:51,360 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 17 predicate places. [2025-01-10 01:01:51,360 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 66 transitions, 369 flow [2025-01-10 01:01:51,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:01:51,360 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:01:51,361 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:01:51,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-10 01:01:51,361 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-01-10 01:01:51,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:01:51,361 INFO L85 PathProgramCache]: Analyzing trace with hash 398164340, now seen corresponding path program 2 times [2025-01-10 01:01:51,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:01:51,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368239308] [2025-01-10 01:01:51,361 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:01:51,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:01:51,370 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-01-10 01:01:51,382 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-01-10 01:01:51,382 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:01:51,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:01:51,467 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 01:01:51,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:01:51,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368239308] [2025-01-10 01:01:51,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368239308] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:01:51,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:01:51,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 01:01:51,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972498203] [2025-01-10 01:01:51,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:01:51,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 01:01:51,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:01:51,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 01:01:51,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 01:01:51,470 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-01-10 01:01:51,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 66 transitions, 369 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:01:51,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:01:51,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-01-10 01:01:51,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:01:53,673 INFO L124 PetriNetUnfolderBase]: 33105/39637 cut-off events. [2025-01-10 01:01:53,674 INFO L125 PetriNetUnfolderBase]: For 105846/105849 co-relation queries the response was YES. [2025-01-10 01:01:53,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161450 conditions, 39637 events. 33105/39637 cut-off events. For 105846/105849 co-relation queries the response was YES. Maximal size of possible extension queue 1474. Compared 162828 event pairs, 2185 based on Foata normal form. 386/39660 useless extension candidates. Maximal degree in co-relation 93637. Up to 17338 conditions per place. [2025-01-10 01:01:53,888 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 154 selfloop transitions, 11 changer transitions 0/172 dead transitions. [2025-01-10 01:01:53,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 172 transitions, 1359 flow [2025-01-10 01:01:53,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 01:01:53,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 01:01:53,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2025-01-10 01:01:53,890 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-01-10 01:01:53,890 INFO L175 Difference]: Start difference. First operand has 71 places, 66 transitions, 369 flow. Second operand 5 states and 160 transitions. [2025-01-10 01:01:53,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 172 transitions, 1359 flow [2025-01-10 01:01:54,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 172 transitions, 1322 flow, removed 8 selfloop flow, removed 1 redundant places. [2025-01-10 01:01:54,206 INFO L231 Difference]: Finished difference. Result has 75 places, 71 transitions, 419 flow [2025-01-10 01:01:54,206 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=419, PETRI_PLACES=75, PETRI_TRANSITIONS=71} [2025-01-10 01:01:54,207 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 21 predicate places. [2025-01-10 01:01:54,207 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 71 transitions, 419 flow [2025-01-10 01:01:54,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:01:54,207 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:01:54,207 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:01:54,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-10 01:01:54,208 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-01-10 01:01:54,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:01:54,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1840280505, now seen corresponding path program 1 times [2025-01-10 01:01:54,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:01:54,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752754986] [2025-01-10 01:01:54,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:01:54,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:01:54,215 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-10 01:01:54,221 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-10 01:01:54,221 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:01:54,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:01:54,344 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 01:01:54,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:01:54,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752754986] [2025-01-10 01:01:54,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752754986] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:01:54,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:01:54,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 01:01:54,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314336897] [2025-01-10 01:01:54,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:01:54,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 01:01:54,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:01:54,346 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 01:01:54,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 01:01:54,346 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-01-10 01:01:54,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 71 transitions, 419 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:01:54,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:01:54,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-01-10 01:01:54,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:01:56,568 INFO L124 PetriNetUnfolderBase]: 32715/39247 cut-off events. [2025-01-10 01:01:56,569 INFO L125 PetriNetUnfolderBase]: For 102807/102810 co-relation queries the response was YES. [2025-01-10 01:01:56,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165882 conditions, 39247 events. 32715/39247 cut-off events. For 102807/102810 co-relation queries the response was YES. Maximal size of possible extension queue 1473. Compared 162851 event pairs, 1846 based on Foata normal form. 390/39274 useless extension candidates. Maximal degree in co-relation 107931. Up to 17433 conditions per place. [2025-01-10 01:01:56,825 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 154 selfloop transitions, 8 changer transitions 0/169 dead transitions. [2025-01-10 01:01:56,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 169 transitions, 1331 flow [2025-01-10 01:01:56,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 01:01:56,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 01:01:56,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 158 transitions. [2025-01-10 01:01:56,826 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6583333333333333 [2025-01-10 01:01:56,826 INFO L175 Difference]: Start difference. First operand has 75 places, 71 transitions, 419 flow. Second operand 5 states and 158 transitions. [2025-01-10 01:01:56,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 169 transitions, 1331 flow [2025-01-10 01:01:57,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 169 transitions, 1320 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-01-10 01:01:57,168 INFO L231 Difference]: Finished difference. Result has 79 places, 70 transitions, 422 flow [2025-01-10 01:01:57,169 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=422, PETRI_PLACES=79, PETRI_TRANSITIONS=70} [2025-01-10 01:01:57,169 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 25 predicate places. [2025-01-10 01:01:57,169 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 70 transitions, 422 flow [2025-01-10 01:01:57,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:01:57,170 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:01:57,170 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:01:57,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-01-10 01:01:57,170 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-01-10 01:01:57,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:01:57,170 INFO L85 PathProgramCache]: Analyzing trace with hash 113130369, now seen corresponding path program 2 times [2025-01-10 01:01:57,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:01:57,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171616872] [2025-01-10 01:01:57,171 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:01:57,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:01:57,179 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-01-10 01:01:57,186 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-01-10 01:01:57,187 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:01:57,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:01:57,462 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 01:01:57,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:01:57,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171616872] [2025-01-10 01:01:57,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171616872] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:01:57,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291344866] [2025-01-10 01:01:57,463 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:01:57,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:01:57,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:01:57,465 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 01:01:57,467 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 01:01:57,515 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-01-10 01:01:57,539 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-01-10 01:01:57,539 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:01:57,539 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:01:57,540 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 01:01:57,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:01:57,737 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 01:01:57,738 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:01:57,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:01:57,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291344866] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:01:57,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:01:57,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2025-01-10 01:01:57,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538839381] [2025-01-10 01:01:57,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:01:57,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 01:01:57,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:01:57,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 01:01:57,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-10 01:01:57,839 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-01-10 01:01:57,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 422 flow. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 01:01:57,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:01:57,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-01-10 01:01:57,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:01:59,886 INFO L124 PetriNetUnfolderBase]: 31943/38619 cut-off events. [2025-01-10 01:01:59,886 INFO L125 PetriNetUnfolderBase]: For 105433/105436 co-relation queries the response was YES. [2025-01-10 01:01:59,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166328 conditions, 38619 events. 31943/38619 cut-off events. For 105433/105436 co-relation queries the response was YES. Maximal size of possible extension queue 1438. Compared 166779 event pairs, 5456 based on Foata normal form. 772/38884 useless extension candidates. Maximal degree in co-relation 108226. Up to 19923 conditions per place. [2025-01-10 01:02:00,318 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 148 selfloop transitions, 8 changer transitions 0/163 dead transitions. [2025-01-10 01:02:00,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 163 transitions, 1297 flow [2025-01-10 01:02:00,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 01:02:00,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 01:02:00,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2025-01-10 01:02:00,320 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.65 [2025-01-10 01:02:00,320 INFO L175 Difference]: Start difference. First operand has 79 places, 70 transitions, 422 flow. Second operand 5 states and 156 transitions. [2025-01-10 01:02:00,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 163 transitions, 1297 flow [2025-01-10 01:02:00,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 163 transitions, 1284 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-01-10 01:02:00,557 INFO L231 Difference]: Finished difference. Result has 84 places, 73 transitions, 462 flow [2025-01-10 01:02:00,558 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=462, PETRI_PLACES=84, PETRI_TRANSITIONS=73} [2025-01-10 01:02:00,558 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 30 predicate places. [2025-01-10 01:02:00,558 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 73 transitions, 462 flow [2025-01-10 01:02:00,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 01:02:00,558 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:02:00,559 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:02:00,566 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 01:02:00,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:02:00,763 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-01-10 01:02:00,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:02:00,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1322698593, now seen corresponding path program 2 times [2025-01-10 01:02:00,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:02:00,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136672019] [2025-01-10 01:02:00,764 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:02:00,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:02:00,771 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-01-10 01:02:00,779 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-01-10 01:02:00,779 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:02:00,779 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:02:00,858 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 01:02:00,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:02:00,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136672019] [2025-01-10 01:02:00,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136672019] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:02:00,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151699327] [2025-01-10 01:02:00,859 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:02:00,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:02:00,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:02:00,861 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 01:02:00,864 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 01:02:00,910 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-01-10 01:02:00,940 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-01-10 01:02:00,940 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:02:00,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:02:00,941 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 01:02:00,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:02:01,101 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 01:02:01,101 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:02:01,181 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 01:02:01,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151699327] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:02:01,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:02:01,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2025-01-10 01:02:01,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168050420] [2025-01-10 01:02:01,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:02:01,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 01:02:01,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:02:01,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 01:02:01,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-10 01:02:01,182 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-01-10 01:02:01,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 73 transitions, 462 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:02:01,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:02:01,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-01-10 01:02:01,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:02:03,392 INFO L124 PetriNetUnfolderBase]: 30959/37431 cut-off events. [2025-01-10 01:02:03,392 INFO L125 PetriNetUnfolderBase]: For 108984/109275 co-relation queries the response was YES. [2025-01-10 01:02:03,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167781 conditions, 37431 events. 30959/37431 cut-off events. For 108984/109275 co-relation queries the response was YES. Maximal size of possible extension queue 1359. Compared 161980 event pairs, 5914 based on Foata normal form. 1032/38208 useless extension candidates. Maximal degree in co-relation 151006. Up to 20603 conditions per place. [2025-01-10 01:02:03,628 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 168 selfloop transitions, 8 changer transitions 0/183 dead transitions. [2025-01-10 01:02:03,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 183 transitions, 1525 flow [2025-01-10 01:02:03,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 01:02:03,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 01:02:03,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2025-01-10 01:02:03,629 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2025-01-10 01:02:03,629 INFO L175 Difference]: Start difference. First operand has 84 places, 73 transitions, 462 flow. Second operand 5 states and 164 transitions. [2025-01-10 01:02:03,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 183 transitions, 1525 flow [2025-01-10 01:02:04,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 183 transitions, 1463 flow, removed 20 selfloop flow, removed 2 redundant places. [2025-01-10 01:02:04,015 INFO L231 Difference]: Finished difference. Result has 88 places, 76 transitions, 493 flow [2025-01-10 01:02:04,015 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=493, PETRI_PLACES=88, PETRI_TRANSITIONS=76} [2025-01-10 01:02:04,015 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 34 predicate places. [2025-01-10 01:02:04,015 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 76 transitions, 493 flow [2025-01-10 01:02:04,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:02:04,015 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:02:04,016 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:02:04,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-10 01:02:04,220 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,SelfDestructingSolverStorable9 [2025-01-10 01:02:04,220 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-01-10 01:02:04,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:02:04,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1652775475, now seen corresponding path program 1 times [2025-01-10 01:02:04,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:02:04,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47675522] [2025-01-10 01:02:04,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:02:04,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:02:04,227 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-10 01:02:04,232 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-10 01:02:04,232 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:02:04,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:02:04,489 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 01:02:04,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:02:04,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47675522] [2025-01-10 01:02:04,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47675522] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:02:04,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037328441] [2025-01-10 01:02:04,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:02:04,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:02:04,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:02:04,492 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 01:02:04,495 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 01:02:04,542 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-10 01:02:04,571 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-10 01:02:04,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:02:04,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:02:04,574 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 01:02:04,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:02:04,642 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 01:02:04,646 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:02:04,682 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 01:02:04,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037328441] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:02:04,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:02:04,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2025-01-10 01:02:04,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955727031] [2025-01-10 01:02:04,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:02:04,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 01:02:04,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:02:04,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 01:02:04,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-10 01:02:04,685 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-01-10 01:02:04,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 76 transitions, 493 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 01:02:04,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:02:04,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-01-10 01:02:04,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:02:07,274 INFO L124 PetriNetUnfolderBase]: 34557/42201 cut-off events. [2025-01-10 01:02:07,274 INFO L125 PetriNetUnfolderBase]: For 148728/148984 co-relation queries the response was YES. [2025-01-10 01:02:07,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196656 conditions, 42201 events. 34557/42201 cut-off events. For 148728/148984 co-relation queries the response was YES. Maximal size of possible extension queue 1546. Compared 196404 event pairs, 7642 based on Foata normal form. 1020/43002 useless extension candidates. Maximal degree in co-relation 177798. Up to 19791 conditions per place. [2025-01-10 01:02:07,576 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 205 selfloop transitions, 10 changer transitions 0/222 dead transitions. [2025-01-10 01:02:07,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 222 transitions, 1885 flow [2025-01-10 01:02:07,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 01:02:07,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 01:02:07,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 181 transitions. [2025-01-10 01:02:07,577 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7541666666666667 [2025-01-10 01:02:07,577 INFO L175 Difference]: Start difference. First operand has 88 places, 76 transitions, 493 flow. Second operand 5 states and 181 transitions. [2025-01-10 01:02:07,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 222 transitions, 1885 flow [2025-01-10 01:02:08,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 222 transitions, 1823 flow, removed 20 selfloop flow, removed 2 redundant places. [2025-01-10 01:02:08,042 INFO L231 Difference]: Finished difference. Result has 92 places, 79 transitions, 529 flow [2025-01-10 01:02:08,042 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=529, PETRI_PLACES=92, PETRI_TRANSITIONS=79} [2025-01-10 01:02:08,042 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 38 predicate places. [2025-01-10 01:02:08,042 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 79 transitions, 529 flow [2025-01-10 01:02:08,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 01:02:08,043 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:02:08,043 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:02:08,049 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 01:02:08,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-01-10 01:02:08,244 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-01-10 01:02:08,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:02:08,244 INFO L85 PathProgramCache]: Analyzing trace with hash -2066189417, now seen corresponding path program 2 times [2025-01-10 01:02:08,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:02:08,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074731146] [2025-01-10 01:02:08,244 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:02:08,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:02:08,250 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-01-10 01:02:08,257 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-01-10 01:02:08,257 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:02:08,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:02:08,331 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 01:02:08,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:02:08,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074731146] [2025-01-10 01:02:08,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074731146] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:02:08,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:02:08,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 01:02:08,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131459047] [2025-01-10 01:02:08,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:02:08,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 01:02:08,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:02:08,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 01:02:08,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 01:02:08,333 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-01-10 01:02:08,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 79 transitions, 529 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:02:08,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:02:08,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-01-10 01:02:08,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:02:10,469 INFO L124 PetriNetUnfolderBase]: 29565/35852 cut-off events. [2025-01-10 01:02:10,469 INFO L125 PetriNetUnfolderBase]: For 139723/139787 co-relation queries the response was YES. [2025-01-10 01:02:10,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172419 conditions, 35852 events. 29565/35852 cut-off events. For 139723/139787 co-relation queries the response was YES. Maximal size of possible extension queue 1314. Compared 157137 event pairs, 2545 based on Foata normal form. 428/36224 useless extension candidates. Maximal degree in co-relation 156260. Up to 16532 conditions per place. [2025-01-10 01:02:10,762 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 204 selfloop transitions, 9 changer transitions 0/220 dead transitions. [2025-01-10 01:02:10,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 220 transitions, 1878 flow [2025-01-10 01:02:10,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 01:02:10,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 01:02:10,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 175 transitions. [2025-01-10 01:02:10,764 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2025-01-10 01:02:10,764 INFO L175 Difference]: Start difference. First operand has 92 places, 79 transitions, 529 flow. Second operand 5 states and 175 transitions. [2025-01-10 01:02:10,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 220 transitions, 1878 flow [2025-01-10 01:02:11,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 220 transitions, 1869 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-01-10 01:02:11,238 INFO L231 Difference]: Finished difference. Result has 96 places, 78 transitions, 533 flow [2025-01-10 01:02:11,238 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=533, PETRI_PLACES=96, PETRI_TRANSITIONS=78} [2025-01-10 01:02:11,239 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 42 predicate places. [2025-01-10 01:02:11,239 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 78 transitions, 533 flow [2025-01-10 01:02:11,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:02:11,239 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:02:11,239 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:02:11,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-01-10 01:02:11,239 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-01-10 01:02:11,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:02:11,240 INFO L85 PathProgramCache]: Analyzing trace with hash -544888517, now seen corresponding path program 2 times [2025-01-10 01:02:11,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:02:11,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865492781] [2025-01-10 01:02:11,240 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:02:11,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:02:11,245 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-01-10 01:02:11,255 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-01-10 01:02:11,256 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:02:11,256 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:02:11,344 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 01:02:11,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:02:11,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865492781] [2025-01-10 01:02:11,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865492781] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:02:11,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486367163] [2025-01-10 01:02:11,345 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:02:11,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:02:11,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:02:11,348 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 01:02:11,350 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 01:02:11,401 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-01-10 01:02:11,431 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-01-10 01:02:11,431 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:02:11,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:02:11,432 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 01:02:11,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:02:11,622 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 01:02:11,622 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:02:11,709 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 01:02:11,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486367163] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:02:11,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:02:11,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2025-01-10 01:02:11,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177523916] [2025-01-10 01:02:11,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:02:11,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 01:02:11,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:02:11,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 01:02:11,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-10 01:02:11,710 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-01-10 01:02:11,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 78 transitions, 533 flow. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 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 01:02:11,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:02:11,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-01-10 01:02:11,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:02:14,076 INFO L124 PetriNetUnfolderBase]: 28729/35143 cut-off events. [2025-01-10 01:02:14,076 INFO L125 PetriNetUnfolderBase]: For 141020/141276 co-relation queries the response was YES. [2025-01-10 01:02:14,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172686 conditions, 35143 events. 28729/35143 cut-off events. For 141020/141276 co-relation queries the response was YES. Maximal size of possible extension queue 1291. Compared 159090 event pairs, 8432 based on Foata normal form. 876/35800 useless extension candidates. Maximal degree in co-relation 156526. Up to 19637 conditions per place. [2025-01-10 01:02:14,635 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 199 selfloop transitions, 8 changer transitions 0/214 dead transitions. [2025-01-10 01:02:14,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 214 transitions, 1842 flow [2025-01-10 01:02:14,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 01:02:14,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 01:02:14,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 172 transitions. [2025-01-10 01:02:14,636 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7166666666666667 [2025-01-10 01:02:14,636 INFO L175 Difference]: Start difference. First operand has 96 places, 78 transitions, 533 flow. Second operand 5 states and 172 transitions. [2025-01-10 01:02:14,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 214 transitions, 1842 flow [2025-01-10 01:02:14,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 214 transitions, 1835 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 01:02:14,815 INFO L231 Difference]: Finished difference. Result has 101 places, 81 transitions, 580 flow [2025-01-10 01:02:14,816 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=580, PETRI_PLACES=101, PETRI_TRANSITIONS=81} [2025-01-10 01:02:14,816 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 47 predicate places. [2025-01-10 01:02:14,816 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 81 transitions, 580 flow [2025-01-10 01:02:14,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 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 01:02:14,816 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:02:14,816 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:02:14,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-10 01:02:15,017 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,SelfDestructingSolverStorable12 [2025-01-10 01:02:15,017 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-01-10 01:02:15,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:02:15,018 INFO L85 PathProgramCache]: Analyzing trace with hash -661550002, now seen corresponding path program 1 times [2025-01-10 01:02:15,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:02:15,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499698288] [2025-01-10 01:02:15,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:02:15,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:02:15,024 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-01-10 01:02:15,049 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-01-10 01:02:15,049 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:02:15,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:02:15,642 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 01:02:15,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:02:15,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499698288] [2025-01-10 01:02:15,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499698288] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:02:15,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484070210] [2025-01-10 01:02:15,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:02:15,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:02:15,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:02:15,645 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 01:02:15,648 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 01:02:15,697 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-01-10 01:02:15,833 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-01-10 01:02:15,833 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:02:15,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:02:15,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-10 01:02:15,837 INFO L279 TraceCheckSpWp]: Computing forward predicates...