./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/fib_safe-7.i --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/pthread/fib_safe-7.i -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 2a12d5b905fa07b94a851888f481630fccc5d15913fb6b7efa54c908526d1783 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 00:35:28,967 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 00:35:29,029 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-10 00:35:29,037 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 00:35:29,037 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 00:35:29,058 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 00:35:29,058 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 00:35:29,058 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 00:35:29,059 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 00:35:29,059 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 00:35:29,059 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 00:35:29,059 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 00:35:29,059 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 00:35:29,059 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 00:35:29,059 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 00:35:29,060 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 00:35:29,060 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 00:35:29,060 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 00:35:29,060 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 00:35:29,060 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 00:35:29,060 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 00:35:29,060 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 00:35:29,060 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 00:35:29,060 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 00:35:29,060 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 00:35:29,060 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 00:35:29,060 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 00:35:29,061 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 00:35:29,061 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 00:35:29,061 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 00:35:29,061 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:35:29,061 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:35:29,061 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:35:29,061 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:35:29,061 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 00:35:29,061 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:35:29,061 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:35:29,062 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:35:29,062 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:35:29,062 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 00:35:29,062 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 00:35:29,062 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 00:35:29,062 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 00:35:29,062 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 00:35:29,062 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 00:35:29,062 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 00:35:29,062 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 00:35:29,062 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 -> 2a12d5b905fa07b94a851888f481630fccc5d15913fb6b7efa54c908526d1783 [2025-01-10 00:35:29,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 00:35:29,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 00:35:29,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 00:35:29,284 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 00:35:29,284 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 00:35:29,286 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/fib_safe-7.i [2025-01-10 00:35:30,546 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e9c315c32/b4fc9260bd6d4f29b5b47f3e95338a7a/FLAG72963ecec [2025-01-10 00:35:30,857 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 00:35:30,858 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/fib_safe-7.i [2025-01-10 00:35:30,869 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e9c315c32/b4fc9260bd6d4f29b5b47f3e95338a7a/FLAG72963ecec [2025-01-10 00:35:31,137 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e9c315c32/b4fc9260bd6d4f29b5b47f3e95338a7a [2025-01-10 00:35:31,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 00:35:31,140 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 00:35:31,145 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 00:35:31,146 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 00:35:31,148 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 00:35:31,149 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:35:31" (1/1) ... [2025-01-10 00:35:31,153 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55d8d91f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:31, skipping insertion in model container [2025-01-10 00:35:31,154 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:35:31" (1/1) ... [2025-01-10 00:35:31,195 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:35:31,370 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:35:31,376 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 00:35:31,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:35:31,427 INFO L204 MainTranslator]: Completed translation [2025-01-10 00:35:31,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:31 WrapperNode [2025-01-10 00:35:31,428 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 00:35:31,428 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 00:35:31,429 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 00:35:31,429 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 00:35:31,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:31" (1/1) ... [2025-01-10 00:35:31,440 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:31" (1/1) ... [2025-01-10 00:35:31,451 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 65 [2025-01-10 00:35:31,451 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 00:35:31,452 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 00:35:31,452 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 00:35:31,452 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 00:35:31,457 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:31" (1/1) ... [2025-01-10 00:35:31,457 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:31" (1/1) ... [2025-01-10 00:35:31,458 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:31" (1/1) ... [2025-01-10 00:35:31,465 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 00:35:31,465 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:31" (1/1) ... [2025-01-10 00:35:31,465 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:31" (1/1) ... [2025-01-10 00:35:31,468 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:31" (1/1) ... [2025-01-10 00:35:31,468 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:31" (1/1) ... [2025-01-10 00:35:31,470 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:31" (1/1) ... [2025-01-10 00:35:31,471 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:31" (1/1) ... [2025-01-10 00:35:31,471 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:31" (1/1) ... [2025-01-10 00:35:31,472 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 00:35:31,473 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 00:35:31,473 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 00:35:31,473 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 00:35:31,473 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:31" (1/1) ... [2025-01-10 00:35:31,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:35:31,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:35:31,508 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 00:35:31,515 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 00:35:31,534 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-01-10 00:35:31,535 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-01-10 00:35:31,535 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-01-10 00:35:31,535 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-01-10 00:35:31,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-01-10 00:35:31,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 00:35:31,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 00:35:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-01-10 00:35:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 00:35:31,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 00:35:31,537 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 00:35:31,632 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 00:35:31,637 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 00:35:31,741 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 00:35:31,742 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 00:35:31,807 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 00:35:31,807 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 00:35:31,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:35:31 BoogieIcfgContainer [2025-01-10 00:35:31,808 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 00:35:31,809 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 00:35:31,809 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 00:35:31,812 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 00:35:31,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:35:31" (1/3) ... [2025-01-10 00:35:31,814 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751c3852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:35:31, skipping insertion in model container [2025-01-10 00:35:31,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:31" (2/3) ... [2025-01-10 00:35:31,815 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751c3852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:35:31, skipping insertion in model container [2025-01-10 00:35:31,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:35:31" (3/3) ... [2025-01-10 00:35:31,816 INFO L128 eAbstractionObserver]: Analyzing ICFG fib_safe-7.i [2025-01-10 00:35:31,829 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 00:35:31,830 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fib_safe-7.i that has 3 procedures, 30 locations, 1 initial locations, 3 loop locations, and 2 error locations. [2025-01-10 00:35:31,830 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 00:35:31,855 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-10 00:35:31,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 34 transitions, 76 flow [2025-01-10 00:35:31,897 INFO L124 PetriNetUnfolderBase]: 5/32 cut-off events. [2025-01-10 00:35:31,899 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 00:35:31,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 32 events. 5/32 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2025-01-10 00:35:31,901 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 34 transitions, 76 flow [2025-01-10 00:35:31,903 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 32 transitions, 70 flow [2025-01-10 00:35:31,908 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 00:35:31,915 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;@29c9bb77, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 00:35:31,916 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-01-10 00:35:31,923 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 00:35:31,923 INFO L124 PetriNetUnfolderBase]: 5/29 cut-off events. [2025-01-10 00:35:31,923 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 00:35:31,923 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:35:31,924 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:35:31,924 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 00:35:31,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:35:31,928 INFO L85 PathProgramCache]: Analyzing trace with hash 282289383, now seen corresponding path program 1 times [2025-01-10 00:35:31,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:35:31,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534155277] [2025-01-10 00:35:31,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:35:31,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:35:31,996 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-10 00:35:32,015 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-10 00:35:32,016 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:35:32,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:35:32,144 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 00:35:32,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:35:32,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534155277] [2025-01-10 00:35:32,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534155277] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:35:32,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:35:32,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:35:32,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260138031] [2025-01-10 00:35:32,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:35:32,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:35:32,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:35:32,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:35:32,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:35:32,177 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2025-01-10 00:35:32,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 00:35:32,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:35:32,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2025-01-10 00:35:32,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:35:32,251 INFO L124 PetriNetUnfolderBase]: 151/286 cut-off events. [2025-01-10 00:35:32,251 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-01-10 00:35:32,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 529 conditions, 286 events. 151/286 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 932 event pairs, 20 based on Foata normal form. 18/290 useless extension candidates. Maximal degree in co-relation 515. Up to 172 conditions per place. [2025-01-10 00:35:32,255 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 22 selfloop transitions, 2 changer transitions 1/36 dead transitions. [2025-01-10 00:35:32,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 128 flow [2025-01-10 00:35:32,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:35:32,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 00:35:32,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2025-01-10 00:35:32,265 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6568627450980392 [2025-01-10 00:35:32,266 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 70 flow. Second operand 3 states and 67 transitions. [2025-01-10 00:35:32,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 128 flow [2025-01-10 00:35:32,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 36 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 00:35:32,270 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 72 flow [2025-01-10 00:35:32,272 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2025-01-10 00:35:32,273 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2025-01-10 00:35:32,274 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 72 flow [2025-01-10 00:35:32,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 00:35:32,274 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:35:32,274 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:35:32,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 00:35:32,274 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 00:35:32,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:35:32,275 INFO L85 PathProgramCache]: Analyzing trace with hash 439810931, now seen corresponding path program 1 times [2025-01-10 00:35:32,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:35:32,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504166338] [2025-01-10 00:35:32,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:35:32,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:35:32,283 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 00:35:32,288 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 00:35:32,288 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:35:32,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:35:32,357 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 00:35:32,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:35:32,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504166338] [2025-01-10 00:35:32,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504166338] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:35:32,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589122384] [2025-01-10 00:35:32,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:35:32,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:35:32,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:35:32,360 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 00:35:32,362 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 00:35:32,412 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 00:35:32,428 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 00:35:32,428 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:35:32,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:35:32,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-10 00:35:32,432 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:35:32,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 00:35:32,462 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:35:32,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589122384] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:35:32,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 00:35:32,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2025-01-10 00:35:32,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423270128] [2025-01-10 00:35:32,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:35:32,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:35:32,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:35:32,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:35:32,464 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:35:32,464 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 34 [2025-01-10 00:35:32,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 00:35:32,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:35:32,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 34 [2025-01-10 00:35:32,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:35:32,517 INFO L124 PetriNetUnfolderBase]: 133/250 cut-off events. [2025-01-10 00:35:32,517 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-01-10 00:35:32,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 503 conditions, 250 events. 133/250 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 756 event pairs, 80 based on Foata normal form. 9/242 useless extension candidates. Maximal degree in co-relation 488. Up to 204 conditions per place. [2025-01-10 00:35:32,522 INFO L140 encePairwiseOnDemand]: 32/34 looper letters, 16 selfloop transitions, 1 changer transitions 1/28 dead transitions. [2025-01-10 00:35:32,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 106 flow [2025-01-10 00:35:32,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:35:32,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 00:35:32,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2025-01-10 00:35:32,525 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2025-01-10 00:35:32,525 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 72 flow. Second operand 3 states and 54 transitions. [2025-01-10 00:35:32,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 106 flow [2025-01-10 00:35:32,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 104 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 00:35:32,526 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 68 flow [2025-01-10 00:35:32,526 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2025-01-10 00:35:32,526 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2025-01-10 00:35:32,526 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 68 flow [2025-01-10 00:35:32,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 00:35:32,526 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:35:32,526 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:35:32,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-10 00:35:32,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:35:32,727 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 00:35:32,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:35:32,728 INFO L85 PathProgramCache]: Analyzing trace with hash 439811976, now seen corresponding path program 1 times [2025-01-10 00:35:32,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:35:32,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52418041] [2025-01-10 00:35:32,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:35:32,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:35:32,736 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 00:35:32,740 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 00:35:32,741 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:35:32,741 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:35:32,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:35:32,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:35:32,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52418041] [2025-01-10 00:35:32,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52418041] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:35:32,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573043020] [2025-01-10 00:35:32,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:35:32,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:35:32,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:35:32,777 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 00:35:32,778 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 00:35:32,816 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 00:35:32,834 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 00:35:32,835 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:35:32,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:35:32,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:35:32,836 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:35:32,859 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 00:35:32,859 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:35:32,875 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 00:35:32,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573043020] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:35:32,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 00:35:32,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-01-10 00:35:32,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235496703] [2025-01-10 00:35:32,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 00:35:32,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 00:35:32,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:35:32,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 00:35:32,876 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-10 00:35:32,877 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2025-01-10 00:35:32,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 68 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 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 00:35:32,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:35:32,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2025-01-10 00:35:32,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:35:32,986 INFO L124 PetriNetUnfolderBase]: 169/304 cut-off events. [2025-01-10 00:35:32,986 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-01-10 00:35:32,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 630 conditions, 304 events. 169/304 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 863 event pairs, 20 based on Foata normal form. 0/290 useless extension candidates. Maximal degree in co-relation 622. Up to 118 conditions per place. [2025-01-10 00:35:32,988 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 39 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2025-01-10 00:35:32,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 54 transitions, 216 flow [2025-01-10 00:35:32,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 00:35:32,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 00:35:32,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2025-01-10 00:35:32,989 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6127450980392157 [2025-01-10 00:35:32,989 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 68 flow. Second operand 6 states and 125 transitions. [2025-01-10 00:35:32,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 54 transitions, 216 flow [2025-01-10 00:35:32,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 54 transitions, 215 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 00:35:32,990 INFO L231 Difference]: Finished difference. Result has 39 places, 30 transitions, 103 flow [2025-01-10 00:35:32,990 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=103, PETRI_PLACES=39, PETRI_TRANSITIONS=30} [2025-01-10 00:35:32,991 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2025-01-10 00:35:32,991 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 30 transitions, 103 flow [2025-01-10 00:35:32,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 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 00:35:32,991 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:35:32,991 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:35:32,997 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 00:35:33,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:35:33,192 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 00:35:33,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:35:33,197 INFO L85 PathProgramCache]: Analyzing trace with hash 407546876, now seen corresponding path program 2 times [2025-01-10 00:35:33,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:35:33,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980538674] [2025-01-10 00:35:33,197 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 00:35:33,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:35:33,207 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-01-10 00:35:33,227 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 00:35:33,230 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 00:35:33,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:35:33,304 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:35:33,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:35:33,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980538674] [2025-01-10 00:35:33,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980538674] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:35:33,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337893796] [2025-01-10 00:35:33,304 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 00:35:33,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:35:33,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:35:33,306 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 00:35:33,310 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 00:35:33,354 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-01-10 00:35:33,379 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 00:35:33,380 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 00:35:33,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:35:33,380 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 00:35:33,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:35:33,394 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:35:33,394 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:35:33,441 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:35:33,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337893796] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:35:33,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 00:35:33,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-01-10 00:35:33,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498650680] [2025-01-10 00:35:33,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 00:35:33,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-10 00:35:33,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:35:33,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-10 00:35:33,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-01-10 00:35:33,443 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2025-01-10 00:35:33,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 30 transitions, 103 flow. Second operand has 13 states, 13 states have (on average 14.615384615384615) internal successors, (190), 13 states have internal predecessors, (190), 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 00:35:33,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:35:33,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2025-01-10 00:35:33,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:35:33,580 INFO L124 PetriNetUnfolderBase]: 277/466 cut-off events. [2025-01-10 00:35:33,580 INFO L125 PetriNetUnfolderBase]: For 207/207 co-relation queries the response was YES. [2025-01-10 00:35:33,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1165 conditions, 466 events. 277/466 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1265 event pairs, 20 based on Foata normal form. 54/515 useless extension candidates. Maximal degree in co-relation 1153. Up to 118 conditions per place. [2025-01-10 00:35:33,583 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 75 selfloop transitions, 11 changer transitions 0/96 dead transitions. [2025-01-10 00:35:33,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 96 transitions, 431 flow [2025-01-10 00:35:33,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-10 00:35:33,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-01-10 00:35:33,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 248 transitions. [2025-01-10 00:35:33,585 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6078431372549019 [2025-01-10 00:35:33,585 INFO L175 Difference]: Start difference. First operand has 39 places, 30 transitions, 103 flow. Second operand 12 states and 248 transitions. [2025-01-10 00:35:33,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 96 transitions, 431 flow [2025-01-10 00:35:33,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 96 transitions, 417 flow, removed 6 selfloop flow, removed 1 redundant places. [2025-01-10 00:35:33,588 INFO L231 Difference]: Finished difference. Result has 55 places, 36 transitions, 173 flow [2025-01-10 00:35:33,588 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=173, PETRI_PLACES=55, PETRI_TRANSITIONS=36} [2025-01-10 00:35:33,588 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 21 predicate places. [2025-01-10 00:35:33,588 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 36 transitions, 173 flow [2025-01-10 00:35:33,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.615384615384615) internal successors, (190), 13 states have internal predecessors, (190), 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 00:35:33,589 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:35:33,589 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:35:33,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-10 00:35:33,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:35:33,793 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 00:35:33,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:35:33,793 INFO L85 PathProgramCache]: Analyzing trace with hash -676216708, now seen corresponding path program 3 times [2025-01-10 00:35:33,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:35:33,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059137264] [2025-01-10 00:35:33,794 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 00:35:33,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:35:33,803 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 24 statements into 6 equivalence classes. [2025-01-10 00:35:33,822 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 24 of 24 statements. [2025-01-10 00:35:33,823 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-10 00:35:33,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:35:33,957 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:35:33,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:35:33,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059137264] [2025-01-10 00:35:33,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059137264] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:35:33,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399428648] [2025-01-10 00:35:33,958 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 00:35:33,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:35:33,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:35:33,961 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 00:35:33,962 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 00:35:33,995 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 24 statements into 6 equivalence classes. [2025-01-10 00:35:34,014 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 24 of 24 statements. [2025-01-10 00:35:34,015 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-10 00:35:34,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:35:34,016 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-10 00:35:34,017 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:35:34,038 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:35:34,038 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:35:34,155 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:35:34,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399428648] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:35:34,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 00:35:34,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2025-01-10 00:35:34,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657702197] [2025-01-10 00:35:34,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 00:35:34,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-10 00:35:34,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:35:34,156 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-10 00:35:34,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2025-01-10 00:35:34,157 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2025-01-10 00:35:34,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 36 transitions, 173 flow. Second operand has 19 states, 19 states have (on average 14.473684210526315) internal successors, (275), 19 states have internal predecessors, (275), 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 00:35:34,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:35:34,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2025-01-10 00:35:34,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:35:34,337 INFO L124 PetriNetUnfolderBase]: 385/628 cut-off events. [2025-01-10 00:35:34,338 INFO L125 PetriNetUnfolderBase]: For 2259/2259 co-relation queries the response was YES. [2025-01-10 00:35:34,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1811 conditions, 628 events. 385/628 cut-off events. For 2259/2259 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1661 event pairs, 20 based on Foata normal form. 54/677 useless extension candidates. Maximal degree in co-relation 1792. Up to 136 conditions per place. [2025-01-10 00:35:34,341 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 111 selfloop transitions, 17 changer transitions 0/138 dead transitions. [2025-01-10 00:35:34,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 138 transitions, 669 flow [2025-01-10 00:35:34,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-10 00:35:34,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-01-10 00:35:34,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 368 transitions. [2025-01-10 00:35:34,343 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6013071895424836 [2025-01-10 00:35:34,343 INFO L175 Difference]: Start difference. First operand has 55 places, 36 transitions, 173 flow. Second operand 18 states and 368 transitions. [2025-01-10 00:35:34,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 138 transitions, 669 flow [2025-01-10 00:35:34,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 138 transitions, 609 flow, removed 25 selfloop flow, removed 5 redundant places. [2025-01-10 00:35:34,348 INFO L231 Difference]: Finished difference. Result has 73 places, 42 transitions, 221 flow [2025-01-10 00:35:34,348 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=221, PETRI_PLACES=73, PETRI_TRANSITIONS=42} [2025-01-10 00:35:34,348 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 39 predicate places. [2025-01-10 00:35:34,349 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 42 transitions, 221 flow [2025-01-10 00:35:34,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 14.473684210526315) internal successors, (275), 19 states have internal predecessors, (275), 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 00:35:34,349 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:35:34,349 INFO L206 CegarLoopForPetriNet]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:35:34,355 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 00:35:34,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:35:34,553 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 00:35:34,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:35:34,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1651018500, now seen corresponding path program 4 times [2025-01-10 00:35:34,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:35:34,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281122820] [2025-01-10 00:35:34,554 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 00:35:34,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:35:34,560 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 30 statements into 2 equivalence classes. [2025-01-10 00:35:34,579 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-01-10 00:35:34,579 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 00:35:34,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:35:35,452 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:35:35,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:35:35,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281122820] [2025-01-10 00:35:35,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281122820] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:35:35,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692179982] [2025-01-10 00:35:35,452 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 00:35:35,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:35:35,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:35:35,454 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 00:35:35,456 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 00:35:35,490 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 30 statements into 2 equivalence classes. [2025-01-10 00:35:35,512 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-01-10 00:35:35,512 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 00:35:35,512 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:35:35,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 59 conjuncts are in the unsatisfiable core [2025-01-10 00:35:35,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:35:36,439 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 105 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:35:36,439 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:35:37,665 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:35:37,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692179982] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:35:37,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 00:35:37,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 67 [2025-01-10 00:35:37,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092839304] [2025-01-10 00:35:37,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 00:35:37,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2025-01-10 00:35:37,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:35:37,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2025-01-10 00:35:37,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=621, Invalid=3935, Unknown=0, NotChecked=0, Total=4556 [2025-01-10 00:35:37,867 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2025-01-10 00:35:37,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 42 transitions, 221 flow. Second operand has 68 states, 68 states have (on average 8.235294117647058) internal successors, (560), 68 states have internal predecessors, (560), 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 00:35:37,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:35:37,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2025-01-10 00:35:37,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:35:55,816 INFO L124 PetriNetUnfolderBase]: 19201/31559 cut-off events. [2025-01-10 00:35:55,817 INFO L125 PetriNetUnfolderBase]: For 80032/80032 co-relation queries the response was YES. [2025-01-10 00:35:55,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85433 conditions, 31559 events. 19201/31559 cut-off events. For 80032/80032 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 207977 event pairs, 511 based on Foata normal form. 0/31189 useless extension candidates. Maximal degree in co-relation 85408. Up to 4023 conditions per place. [2025-01-10 00:35:55,987 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 523 selfloop transitions, 670 changer transitions 789/1986 dead transitions. [2025-01-10 00:35:55,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 1986 transitions, 12728 flow [2025-01-10 00:35:55,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2025-01-10 00:35:55,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2025-01-10 00:35:55,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 2614 transitions. [2025-01-10 00:35:55,999 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4576330532212885 [2025-01-10 00:35:55,999 INFO L175 Difference]: Start difference. First operand has 73 places, 42 transitions, 221 flow. Second operand 168 states and 2614 transitions. [2025-01-10 00:35:56,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 1986 transitions, 12728 flow [2025-01-10 00:35:56,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 1986 transitions, 10546 flow, removed 722 selfloop flow, removed 11 redundant places. [2025-01-10 00:35:56,122 INFO L231 Difference]: Finished difference. Result has 307 places, 773 transitions, 4795 flow [2025-01-10 00:35:56,123 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=168, PETRI_FLOW=4795, PETRI_PLACES=307, PETRI_TRANSITIONS=773} [2025-01-10 00:35:56,123 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 273 predicate places. [2025-01-10 00:35:56,124 INFO L471 AbstractCegarLoop]: Abstraction has has 307 places, 773 transitions, 4795 flow [2025-01-10 00:35:56,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 8.235294117647058) internal successors, (560), 68 states have internal predecessors, (560), 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 00:35:56,125 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:35:56,125 INFO L206 CegarLoopForPetriNet]: trace histogram [16, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:35:56,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-10 00:35:56,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:35:56,326 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 00:35:56,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:35:56,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1313924994, now seen corresponding path program 1 times [2025-01-10 00:35:56,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:35:56,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243869573] [2025-01-10 00:35:56,326 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:35:56,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:35:56,332 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-01-10 00:35:56,352 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-01-10 00:35:56,352 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:35:56,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:35:57,196 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:35:57,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:35:57,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243869573] [2025-01-10 00:35:57,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243869573] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:35:57,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932650868] [2025-01-10 00:35:57,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:35:57,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:35:57,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:35:57,199 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 00:35:57,202 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 00:35:57,236 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-01-10 00:35:57,256 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-01-10 00:35:57,256 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:35:57,256 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:35:57,257 INFO L256 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 61 conjuncts are in the unsatisfiable core [2025-01-10 00:35:57,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:35:58,214 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 105 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:35:58,214 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:35:59,212 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:35:59,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932650868] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:35:59,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 00:35:59,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 73 [2025-01-10 00:35:59,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826152030] [2025-01-10 00:35:59,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 00:35:59,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2025-01-10 00:35:59,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:35:59,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2025-01-10 00:35:59,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=657, Invalid=4745, Unknown=0, NotChecked=0, Total=5402 [2025-01-10 00:35:59,293 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2025-01-10 00:35:59,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 773 transitions, 4795 flow. Second operand has 74 states, 74 states have (on average 8.297297297297296) internal successors, (614), 74 states have internal predecessors, (614), 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 00:35:59,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:35:59,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2025-01-10 00:35:59,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand