./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/popl20-simple-queue.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 608e0c2870f111f9f6921442a1f1a544ee956a8de04c7629c0edf3e54cde4da3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:43:25,600 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:43:25,635 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 08:43:25,638 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:43:25,638 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:43:25,652 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:43:25,653 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:43:25,653 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:43:25,653 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:43:25,653 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:43:25,653 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:43:25,653 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:43:25,654 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:43:25,654 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:43:25,654 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:43:25,654 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:43:25,654 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:43:25,654 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:43:25,654 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:43:25,654 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:43:25,654 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:43:25,654 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:43:25,654 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:43:25,655 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:43:25,655 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:43:25,655 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:43:25,655 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:43:25,655 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:43:25,655 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:43:25,655 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:43:25,655 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:43:25,655 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:43:25,655 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:43:25,655 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:43:25,656 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:43:25,656 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:43:25,656 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 08:43:25,656 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 08:43:25,656 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:43:25,656 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:43:25,656 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:43:25,656 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:43:25,656 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 -> 608e0c2870f111f9f6921442a1f1a544ee956a8de04c7629c0edf3e54cde4da3 [2025-02-08 08:43:25,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:43:25,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:43:25,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:43:25,829 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:43:25,829 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:43:25,830 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2025-02-08 08:43:26,911 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/61312ddf1/5ccc96602efa40048c15befeef372cc4/FLAG6777411cc [2025-02-08 08:43:27,130 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:43:27,131 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2025-02-08 08:43:27,136 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/61312ddf1/5ccc96602efa40048c15befeef372cc4/FLAG6777411cc [2025-02-08 08:43:27,146 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/61312ddf1/5ccc96602efa40048c15befeef372cc4 [2025-02-08 08:43:27,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:43:27,148 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:43:27,149 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:43:27,149 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:43:27,152 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:43:27,153 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:43:27" (1/1) ... [2025-02-08 08:43:27,154 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79d389e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:43:27, skipping insertion in model container [2025-02-08 08:43:27,155 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:43:27" (1/1) ... [2025-02-08 08:43:27,169 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:43:27,395 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 08:43:27,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:43:27,412 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:43:27,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:43:27,440 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:43:27,441 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:43:27 WrapperNode [2025-02-08 08:43:27,441 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:43:27,442 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:43:27,443 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:43:27,443 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:43:27,447 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:43:27" (1/1) ... [2025-02-08 08:43:27,454 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:43:27" (1/1) ... [2025-02-08 08:43:27,474 INFO L138 Inliner]: procedures = 23, calls = 24, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 122 [2025-02-08 08:43:27,477 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:43:27,477 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:43:27,477 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:43:27,477 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:43:27,483 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:43:27" (1/1) ... [2025-02-08 08:43:27,483 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:43:27" (1/1) ... [2025-02-08 08:43:27,485 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:43:27" (1/1) ... [2025-02-08 08:43:27,497 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-02-08 08:43:27,499 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:43:27" (1/1) ... [2025-02-08 08:43:27,499 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:43:27" (1/1) ... [2025-02-08 08:43:27,506 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:43:27" (1/1) ... [2025-02-08 08:43:27,507 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:43:27" (1/1) ... [2025-02-08 08:43:27,507 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:43:27" (1/1) ... [2025-02-08 08:43:27,508 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:43:27" (1/1) ... [2025-02-08 08:43:27,509 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:43:27,514 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:43:27,514 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:43:27,514 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:43:27,514 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:43:27" (1/1) ... [2025-02-08 08:43:27,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:43:27,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:43:27,555 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 08:43:27,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 08:43:27,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:43:27,586 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 08:43:27,586 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 08:43:27,587 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 08:43:27,587 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 08:43:27,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 08:43:27,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 08:43:27,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 08:43:27,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 08:43:27,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 08:43:27,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 08:43:27,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 08:43:27,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:43:27,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:43:27,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 08:43:27,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 08:43:27,589 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 08:43:27,679 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:43:27,680 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:43:27,897 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 08:43:27,897 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:43:28,028 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:43:28,028 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 08:43:28,029 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:43:28 BoogieIcfgContainer [2025-02-08 08:43:28,029 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:43:28,030 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:43:28,030 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:43:28,034 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:43:28,034 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:43:27" (1/3) ... [2025-02-08 08:43:28,034 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194d3f5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:43:28, skipping insertion in model container [2025-02-08 08:43:28,034 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:43:27" (2/3) ... [2025-02-08 08:43:28,035 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194d3f5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:43:28, skipping insertion in model container [2025-02-08 08:43:28,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:43:28" (3/3) ... [2025-02-08 08:43:28,036 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-simple-queue.wvr.c [2025-02-08 08:43:28,045 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:43:28,047 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-simple-queue.wvr.c that has 3 procedures, 33 locations, 1 initial locations, 3 loop locations, and 8 error locations. [2025-02-08 08:43:28,047 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 08:43:28,084 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-08 08:43:28,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 37 transitions, 88 flow [2025-02-08 08:43:28,122 INFO L124 PetriNetUnfolderBase]: 5/35 cut-off events. [2025-02-08 08:43:28,124 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 08:43:28,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 35 events. 5/35 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 50 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2025-02-08 08:43:28,126 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 37 transitions, 88 flow [2025-02-08 08:43:28,128 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 34 transitions, 80 flow [2025-02-08 08:43:28,133 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:43:28,140 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;@3aa68a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:43:28,140 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2025-02-08 08:43:28,143 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 08:43:28,143 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2025-02-08 08:43:28,143 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 08:43:28,143 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:43:28,144 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-08 08:43:28,144 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2025-02-08 08:43:28,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:43:28,148 INFO L85 PathProgramCache]: Analyzing trace with hash 344104, now seen corresponding path program 1 times [2025-02-08 08:43:28,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:43:28,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875594988] [2025-02-08 08:43:28,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:43:28,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:43:28,206 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 08:43:28,223 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 08:43:28,224 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:43:28,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:43:28,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:43:28,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:43:28,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875594988] [2025-02-08 08:43:28,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875594988] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:43:28,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:43:28,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 08:43:28,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091385330] [2025-02-08 08:43:28,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:43:28,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:43:28,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:43:28,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:43:28,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:43:28,382 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2025-02-08 08:43:28,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:43:28,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:43:28,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2025-02-08 08:43:28,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:43:28,522 INFO L124 PetriNetUnfolderBase]: 212/371 cut-off events. [2025-02-08 08:43:28,523 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2025-02-08 08:43:28,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 768 conditions, 371 events. 212/371 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1448 event pairs, 176 based on Foata normal form. 1/264 useless extension candidates. Maximal degree in co-relation 705. Up to 364 conditions per place. [2025-02-08 08:43:28,526 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 23 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2025-02-08 08:43:28,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 120 flow [2025-02-08 08:43:28,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:43:28,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:43:28,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2025-02-08 08:43:28,535 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2025-02-08 08:43:28,536 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 80 flow. Second operand 3 states and 50 transitions. [2025-02-08 08:43:28,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 120 flow [2025-02-08 08:43:28,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 08:43:28,541 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 66 flow [2025-02-08 08:43:28,543 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2025-02-08 08:43:28,545 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2025-02-08 08:43:28,545 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 66 flow [2025-02-08 08:43:28,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:43:28,546 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:43:28,546 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-08 08:43:28,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 08:43:28,546 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2025-02-08 08:43:28,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:43:28,547 INFO L85 PathProgramCache]: Analyzing trace with hash 344105, now seen corresponding path program 1 times [2025-02-08 08:43:28,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:43:28,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863193028] [2025-02-08 08:43:28,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:43:28,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:43:28,552 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 08:43:28,570 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 08:43:28,570 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:43:28,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:43:28,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:43:28,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:43:28,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863193028] [2025-02-08 08:43:28,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863193028] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:43:28,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:43:28,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:43:28,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963213331] [2025-02-08 08:43:28,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:43:28,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:43:28,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:43:28,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:43:28,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:43:28,788 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2025-02-08 08:43:28,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:43:28,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:43:28,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2025-02-08 08:43:28,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:43:28,898 INFO L124 PetriNetUnfolderBase]: 213/374 cut-off events. [2025-02-08 08:43:28,898 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-02-08 08:43:28,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 374 events. 213/374 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1455 event pairs, 176 based on Foata normal form. 0/266 useless extension candidates. Maximal degree in co-relation 737. Up to 369 conditions per place. [2025-02-08 08:43:28,900 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 25 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2025-02-08 08:43:28,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 32 transitions, 132 flow [2025-02-08 08:43:28,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:43:28,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 08:43:28,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 58 transitions. [2025-02-08 08:43:28,901 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3918918918918919 [2025-02-08 08:43:28,901 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 66 flow. Second operand 4 states and 58 transitions. [2025-02-08 08:43:28,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 32 transitions, 132 flow [2025-02-08 08:43:28,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 32 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 08:43:28,903 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 89 flow [2025-02-08 08:43:28,903 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=89, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2025-02-08 08:43:28,904 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2025-02-08 08:43:28,904 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 89 flow [2025-02-08 08:43:28,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:43:28,904 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:43:28,904 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2025-02-08 08:43:28,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 08:43:28,904 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2025-02-08 08:43:28,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:43:28,905 INFO L85 PathProgramCache]: Analyzing trace with hash 330695543, now seen corresponding path program 1 times [2025-02-08 08:43:28,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:43:28,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483218784] [2025-02-08 08:43:28,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:43:28,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:43:28,909 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 08:43:28,923 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 08:43:28,923 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:43:28,923 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:43:29,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:43:29,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:43:29,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483218784] [2025-02-08 08:43:29,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483218784] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:43:29,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124100459] [2025-02-08 08:43:29,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:43:29,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:43:29,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:43:29,164 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:43:29,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 08:43:29,206 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 08:43:29,214 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 08:43:29,214 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:43:29,214 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:43:29,216 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-08 08:43:29,218 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:43:29,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2025-02-08 08:43:29,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:43:29,422 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:43:29,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:43:29,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124100459] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:43:29,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:43:29,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2025-02-08 08:43:29,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516478184] [2025-02-08 08:43:29,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:43:29,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 08:43:29,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:43:29,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 08:43:29,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2025-02-08 08:43:29,545 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2025-02-08 08:43:29,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 89 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:43:29,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:43:29,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2025-02-08 08:43:29,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:43:29,759 INFO L124 PetriNetUnfolderBase]: 213/373 cut-off events. [2025-02-08 08:43:29,760 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-02-08 08:43:29,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 766 conditions, 373 events. 213/373 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1455 event pairs, 176 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 744. Up to 365 conditions per place. [2025-02-08 08:43:29,762 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 21 selfloop transitions, 7 changer transitions 0/31 dead transitions. [2025-02-08 08:43:29,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 31 transitions, 141 flow [2025-02-08 08:43:29,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 08:43:29,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 08:43:29,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2025-02-08 08:43:29,764 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.31981981981981983 [2025-02-08 08:43:29,764 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 89 flow. Second operand 6 states and 71 transitions. [2025-02-08 08:43:29,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 31 transitions, 141 flow [2025-02-08 08:43:29,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 31 transitions, 138 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:43:29,765 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 96 flow [2025-02-08 08:43:29,765 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=96, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2025-02-08 08:43:29,766 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2025-02-08 08:43:29,766 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 96 flow [2025-02-08 08:43:29,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:43:29,766 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:43:29,766 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:43:29,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 08:43:29,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:43:29,971 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2025-02-08 08:43:29,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:43:29,972 INFO L85 PathProgramCache]: Analyzing trace with hash 32650481, now seen corresponding path program 1 times [2025-02-08 08:43:29,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:43:29,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400160607] [2025-02-08 08:43:29,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:43:29,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:43:29,977 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 08:43:29,981 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 08:43:29,982 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:43:29,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:43:30,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:43:30,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:43:30,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400160607] [2025-02-08 08:43:30,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400160607] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:43:30,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:43:30,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:43:30,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279957832] [2025-02-08 08:43:30,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:43:30,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:43:30,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:43:30,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:43:30,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:43:30,044 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2025-02-08 08:43:30,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:43:30,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:43:30,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2025-02-08 08:43:30,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:43:30,135 INFO L124 PetriNetUnfolderBase]: 280/512 cut-off events. [2025-02-08 08:43:30,135 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2025-02-08 08:43:30,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1051 conditions, 512 events. 280/512 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2221 event pairs, 244 based on Foata normal form. 23/404 useless extension candidates. Maximal degree in co-relation 745. Up to 367 conditions per place. [2025-02-08 08:43:30,138 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 38 selfloop transitions, 3 changer transitions 2/46 dead transitions. [2025-02-08 08:43:30,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 46 transitions, 216 flow [2025-02-08 08:43:30,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:43:30,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 08:43:30,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2025-02-08 08:43:30,140 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5472972972972973 [2025-02-08 08:43:30,140 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 96 flow. Second operand 4 states and 81 transitions. [2025-02-08 08:43:30,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 46 transitions, 216 flow [2025-02-08 08:43:30,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 46 transitions, 186 flow, removed 3 selfloop flow, removed 7 redundant places. [2025-02-08 08:43:30,141 INFO L231 Difference]: Finished difference. Result has 34 places, 31 transitions, 85 flow [2025-02-08 08:43:30,141 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=85, PETRI_PLACES=34, PETRI_TRANSITIONS=31} [2025-02-08 08:43:30,142 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2025-02-08 08:43:30,142 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 31 transitions, 85 flow [2025-02-08 08:43:30,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:43:30,142 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:43:30,142 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:43:30,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 08:43:30,142 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2025-02-08 08:43:30,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:43:30,144 INFO L85 PathProgramCache]: Analyzing trace with hash 2111086911, now seen corresponding path program 1 times [2025-02-08 08:43:30,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:43:30,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878415657] [2025-02-08 08:43:30,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:43:30,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:43:30,152 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 08:43:30,163 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 08:43:30,164 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:43:30,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:43:30,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:43:30,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:43:30,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878415657] [2025-02-08 08:43:30,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878415657] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:43:30,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012812269] [2025-02-08 08:43:30,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:43:30,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:43:30,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:43:30,376 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:43:30,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 08:43:30,414 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 08:43:30,425 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 08:43:30,425 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:43:30,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:43:30,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-08 08:43:30,427 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:43:30,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:43:30,500 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:43:30,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012812269] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:43:30,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 08:43:30,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2025-02-08 08:43:30,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497627985] [2025-02-08 08:43:30,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:43:30,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 08:43:30,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:43:30,503 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 08:43:30,503 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-08 08:43:30,513 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2025-02-08 08:43:30,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 85 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2025-02-08 08:43:30,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:43:30,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2025-02-08 08:43:30,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:43:30,592 INFO L124 PetriNetUnfolderBase]: 232/431 cut-off events. [2025-02-08 08:43:30,592 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2025-02-08 08:43:30,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 937 conditions, 431 events. 232/431 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1805 event pairs, 200 based on Foata normal form. 0/340 useless extension candidates. Maximal degree in co-relation 642. Up to 418 conditions per place. [2025-02-08 08:43:30,594 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 23 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2025-02-08 08:43:30,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 129 flow [2025-02-08 08:43:30,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:43:30,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 08:43:30,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 57 transitions. [2025-02-08 08:43:30,595 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38513513513513514 [2025-02-08 08:43:30,595 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 85 flow. Second operand 4 states and 57 transitions. [2025-02-08 08:43:30,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 129 flow [2025-02-08 08:43:30,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 29 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 08:43:30,597 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 78 flow [2025-02-08 08:43:30,597 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2025-02-08 08:43:30,597 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, -3 predicate places. [2025-02-08 08:43:30,597 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 78 flow [2025-02-08 08:43:30,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2025-02-08 08:43:30,597 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:43:30,598 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:43:30,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-08 08:43:30,798 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 [2025-02-08 08:43:30,798 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2025-02-08 08:43:30,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:43:30,799 INFO L85 PathProgramCache]: Analyzing trace with hash 2111086910, now seen corresponding path program 1 times [2025-02-08 08:43:30,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:43:30,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349908879] [2025-02-08 08:43:30,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:43:30,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:43:30,804 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 08:43:30,808 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 08:43:30,808 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:43:30,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:43:30,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 08:43:30,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:43:30,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349908879] [2025-02-08 08:43:30,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349908879] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:43:30,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:43:30,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:43:30,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955043216] [2025-02-08 08:43:30,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:43:30,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:43:30,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:43:30,835 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:43:30,835 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:43:30,842 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2025-02-08 08:43:30,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:43:30,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:43:30,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2025-02-08 08:43:30,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:43:30,899 INFO L124 PetriNetUnfolderBase]: 190/360 cut-off events. [2025-02-08 08:43:30,899 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2025-02-08 08:43:30,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 760 conditions, 360 events. 190/360 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1451 event pairs, 162 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 458. Up to 347 conditions per place. [2025-02-08 08:43:30,901 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 21 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2025-02-08 08:43:30,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 27 transitions, 118 flow [2025-02-08 08:43:30,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:43:30,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 08:43:30,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 51 transitions. [2025-02-08 08:43:30,902 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34459459459459457 [2025-02-08 08:43:30,902 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 78 flow. Second operand 4 states and 51 transitions. [2025-02-08 08:43:30,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 27 transitions, 118 flow [2025-02-08 08:43:30,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 27 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 08:43:30,903 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 72 flow [2025-02-08 08:43:30,903 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, 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=4, PETRI_FLOW=72, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2025-02-08 08:43:30,903 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2025-02-08 08:43:30,904 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 72 flow [2025-02-08 08:43:30,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:43:30,904 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:43:30,904 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:43:30,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 08:43:30,904 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2025-02-08 08:43:30,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:43:30,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1495113762, now seen corresponding path program 1 times [2025-02-08 08:43:30,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:43:30,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593526024] [2025-02-08 08:43:30,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:43:30,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:43:30,909 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 08:43:30,912 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 08:43:30,912 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:43:30,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:43:30,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:43:30,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:43:30,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593526024] [2025-02-08 08:43:30,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593526024] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:43:30,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:43:30,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:43:30,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530340122] [2025-02-08 08:43:30,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:43:30,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:43:30,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:43:30,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:43:30,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:43:30,931 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2025-02-08 08:43:30,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:43:30,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:43:30,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2025-02-08 08:43:30,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:43:30,997 INFO L124 PetriNetUnfolderBase]: 271/494 cut-off events. [2025-02-08 08:43:30,997 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2025-02-08 08:43:30,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1052 conditions, 494 events. 271/494 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2000 event pairs, 150 based on Foata normal form. 2/419 useless extension candidates. Maximal degree in co-relation 751. Up to 312 conditions per place. [2025-02-08 08:43:30,999 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 31 selfloop transitions, 2 changer transitions 4/40 dead transitions. [2025-02-08 08:43:30,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 40 transitions, 178 flow [2025-02-08 08:43:31,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:43:31,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:43:31,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2025-02-08 08:43:31,000 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5315315315315315 [2025-02-08 08:43:31,000 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 72 flow. Second operand 3 states and 59 transitions. [2025-02-08 08:43:31,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 40 transitions, 178 flow [2025-02-08 08:43:31,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 40 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 08:43:31,002 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 76 flow [2025-02-08 08:43:31,002 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2025-02-08 08:43:31,002 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, -3 predicate places. [2025-02-08 08:43:31,002 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 76 flow [2025-02-08 08:43:31,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:43:31,003 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:43:31,003 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:43:31,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 08:43:31,003 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2025-02-08 08:43:31,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:43:31,003 INFO L85 PathProgramCache]: Analyzing trace with hash 262895787, now seen corresponding path program 1 times [2025-02-08 08:43:31,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:43:31,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984470733] [2025-02-08 08:43:31,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:43:31,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:43:31,009 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-08 08:43:31,012 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 08:43:31,012 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:43:31,012 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:43:31,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 08:43:31,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:43:31,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984470733] [2025-02-08 08:43:31,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984470733] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:43:31,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:43:31,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:43:31,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241173750] [2025-02-08 08:43:31,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:43:31,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:43:31,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:43:31,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:43:31,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:43:31,042 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2025-02-08 08:43:31,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:43:31,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:43:31,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2025-02-08 08:43:31,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:43:31,105 INFO L124 PetriNetUnfolderBase]: 251/449 cut-off events. [2025-02-08 08:43:31,105 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2025-02-08 08:43:31,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1003 conditions, 449 events. 251/449 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1656 event pairs, 113 based on Foata normal form. 11/389 useless extension candidates. Maximal degree in co-relation 983. Up to 306 conditions per place. [2025-02-08 08:43:31,107 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 30 selfloop transitions, 2 changer transitions 6/41 dead transitions. [2025-02-08 08:43:31,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 41 transitions, 185 flow [2025-02-08 08:43:31,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:43:31,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:43:31,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2025-02-08 08:43:31,108 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5405405405405406 [2025-02-08 08:43:31,108 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 76 flow. Second operand 3 states and 60 transitions. [2025-02-08 08:43:31,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 41 transitions, 185 flow [2025-02-08 08:43:31,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 41 transitions, 183 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:43:31,110 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 88 flow [2025-02-08 08:43:31,110 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2025-02-08 08:43:31,111 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2025-02-08 08:43:31,112 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 88 flow [2025-02-08 08:43:31,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:43:31,112 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:43:31,112 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:43:31,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 08:43:31,112 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2025-02-08 08:43:31,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:43:31,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1990925677, now seen corresponding path program 1 times [2025-02-08 08:43:31,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:43:31,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515887633] [2025-02-08 08:43:31,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:43:31,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:43:31,121 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-08 08:43:31,138 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 08:43:31,138 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:43:31,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:43:31,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 08:43:31,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:43:31,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515887633] [2025-02-08 08:43:31,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515887633] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:43:31,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766264779] [2025-02-08 08:43:31,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:43:31,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:43:31,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:43:31,435 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:43:31,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 08:43:31,474 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-08 08:43:31,489 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 08:43:31,490 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:43:31,490 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:43:31,491 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-08 08:43:31,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:43:31,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-02-08 08:43:31,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 08:43:31,641 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:43:32,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2025-02-08 08:43:32,264 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-08 08:43:32,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 37 [2025-02-08 08:43:32,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 08:43:32,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766264779] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:43:32,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:43:32,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2025-02-08 08:43:32,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617428938] [2025-02-08 08:43:32,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:43:32,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-08 08:43:32,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:43:32,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-08 08:43:32,320 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2025-02-08 08:43:32,341 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2025-02-08 08:43:32,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 88 flow. Second operand has 15 states, 15 states have (on average 11.8) internal successors, (177), 15 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:43:32,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:43:32,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2025-02-08 08:43:32,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:43:32,964 INFO L124 PetriNetUnfolderBase]: 1151/2034 cut-off events. [2025-02-08 08:43:32,965 INFO L125 PetriNetUnfolderBase]: For 604/604 co-relation queries the response was YES. [2025-02-08 08:43:32,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4720 conditions, 2034 events. 1151/2034 cut-off events. For 604/604 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 10562 event pairs, 387 based on Foata normal form. 5/1724 useless extension candidates. Maximal degree in co-relation 2339. Up to 451 conditions per place. [2025-02-08 08:43:32,976 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 112 selfloop transitions, 22 changer transitions 30/167 dead transitions. [2025-02-08 08:43:32,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 167 transitions, 807 flow [2025-02-08 08:43:32,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-08 08:43:32,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-02-08 08:43:32,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 277 transitions. [2025-02-08 08:43:32,981 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5347490347490348 [2025-02-08 08:43:32,981 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 88 flow. Second operand 14 states and 277 transitions. [2025-02-08 08:43:32,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 167 transitions, 807 flow [2025-02-08 08:43:32,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 167 transitions, 794 flow, removed 4 selfloop flow, removed 1 redundant places. [2025-02-08 08:43:32,983 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 284 flow [2025-02-08 08:43:32,983 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=284, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2025-02-08 08:43:32,984 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 18 predicate places. [2025-02-08 08:43:32,984 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 284 flow [2025-02-08 08:43:32,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.8) internal successors, (177), 15 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:43:32,984 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:43:32,984 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:43:32,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 08:43:33,189 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 [2025-02-08 08:43:33,189 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2025-02-08 08:43:33,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:43:33,190 INFO L85 PathProgramCache]: Analyzing trace with hash -177356902, now seen corresponding path program 2 times [2025-02-08 08:43:33,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:43:33,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905988140] [2025-02-08 08:43:33,190 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:43:33,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:43:33,196 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-02-08 08:43:33,206 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 08:43:33,206 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:43:33,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:43:33,257 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-08 08:43:33,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:43:33,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905988140] [2025-02-08 08:43:33,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905988140] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:43:33,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:43:33,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:43:33,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142946974] [2025-02-08 08:43:33,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:43:33,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:43:33,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:43:33,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:43:33,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:43:33,258 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2025-02-08 08:43:33,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 284 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:43:33,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:43:33,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2025-02-08 08:43:33,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:43:33,652 INFO L124 PetriNetUnfolderBase]: 1868/3289 cut-off events. [2025-02-08 08:43:33,653 INFO L125 PetriNetUnfolderBase]: For 3912/3912 co-relation queries the response was YES. [2025-02-08 08:43:33,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8478 conditions, 3289 events. 1868/3289 cut-off events. For 3912/3912 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 18530 event pairs, 724 based on Foata normal form. 33/2807 useless extension candidates. Maximal degree in co-relation 7576. Up to 1489 conditions per place. [2025-02-08 08:43:33,679 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 67 selfloop transitions, 14 changer transitions 0/84 dead transitions. [2025-02-08 08:43:33,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 84 transitions, 627 flow [2025-02-08 08:43:33,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:43:33,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 08:43:33,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2025-02-08 08:43:33,679 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5743243243243243 [2025-02-08 08:43:33,679 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 284 flow. Second operand 4 states and 85 transitions. [2025-02-08 08:43:33,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 84 transitions, 627 flow [2025-02-08 08:43:33,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 84 transitions, 599 flow, removed 13 selfloop flow, removed 1 redundant places. [2025-02-08 08:43:33,698 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 427 flow [2025-02-08 08:43:33,698 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=427, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2025-02-08 08:43:33,700 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 22 predicate places. [2025-02-08 08:43:33,700 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 427 flow [2025-02-08 08:43:33,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:43:33,700 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:43:33,700 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:43:33,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-08 08:43:33,700 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2025-02-08 08:43:33,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:43:33,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1733831541, now seen corresponding path program 3 times [2025-02-08 08:43:33,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:43:33,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024614098] [2025-02-08 08:43:33,704 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:43:33,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:43:33,711 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 32 statements into 5 equivalence classes. [2025-02-08 08:43:33,733 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 24 of 32 statements. [2025-02-08 08:43:33,734 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 08:43:33,734 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:43:33,800 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-08 08:43:33,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:43:33,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024614098] [2025-02-08 08:43:33,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024614098] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:43:33,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:43:33,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:43:33,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036741552] [2025-02-08 08:43:33,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:43:33,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 08:43:33,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:43:33,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 08:43:33,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:43:33,802 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2025-02-08 08:43:33,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 427 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:43:33,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:43:33,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2025-02-08 08:43:33,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:43:34,114 INFO L124 PetriNetUnfolderBase]: 2326/4083 cut-off events. [2025-02-08 08:43:34,114 INFO L125 PetriNetUnfolderBase]: For 7443/7443 co-relation queries the response was YES. [2025-02-08 08:43:34,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11180 conditions, 4083 events. 2326/4083 cut-off events. For 7443/7443 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 23803 event pairs, 580 based on Foata normal form. 3/3445 useless extension candidates. Maximal degree in co-relation 9118. Up to 1316 conditions per place. [2025-02-08 08:43:34,130 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 67 selfloop transitions, 18 changer transitions 12/100 dead transitions. [2025-02-08 08:43:34,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 100 transitions, 822 flow [2025-02-08 08:43:34,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:43:34,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 08:43:34,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2025-02-08 08:43:34,131 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5513513513513514 [2025-02-08 08:43:34,131 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 427 flow. Second operand 5 states and 102 transitions. [2025-02-08 08:43:34,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 100 transitions, 822 flow [2025-02-08 08:43:34,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 100 transitions, 774 flow, removed 24 selfloop flow, removed 0 redundant places. [2025-02-08 08:43:34,139 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 504 flow [2025-02-08 08:43:34,139 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=504, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2025-02-08 08:43:34,140 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 27 predicate places. [2025-02-08 08:43:34,140 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 504 flow [2025-02-08 08:43:34,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:43:34,140 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:43:34,140 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:43:34,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-08 08:43:34,140 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2025-02-08 08:43:34,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:43:34,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1000607248, now seen corresponding path program 4 times [2025-02-08 08:43:34,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:43:34,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669009417] [2025-02-08 08:43:34,141 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:43:34,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:43:34,148 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 34 statements into 2 equivalence classes. [2025-02-08 08:43:34,166 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-02-08 08:43:34,167 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:43:34,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:43:34,526 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:43:34,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:43:34,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669009417] [2025-02-08 08:43:34,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669009417] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:43:34,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669064527] [2025-02-08 08:43:34,526 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:43:34,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:43:34,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:43:34,529 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:43:34,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 08:43:34,566 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 34 statements into 2 equivalence classes. [2025-02-08 08:43:34,585 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-02-08 08:43:34,585 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:43:34,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:43:34,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-02-08 08:43:34,591 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:43:34,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-02-08 08:43:34,876 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:43:34,876 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:43:35,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2025-02-08 08:43:35,390 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-08 08:43:35,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 37 [2025-02-08 08:43:35,482 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:43:35,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669064527] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:43:35,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:43:35,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2025-02-08 08:43:35,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073444720] [2025-02-08 08:43:35,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:43:35,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-08 08:43:35,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:43:35,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-08 08:43:35,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2025-02-08 08:43:35,546 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2025-02-08 08:43:35,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 504 flow. Second operand has 24 states, 24 states have (on average 11.458333333333334) internal successors, (275), 24 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) [2025-02-08 08:43:35,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:43:35,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2025-02-08 08:43:35,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:43:37,072 INFO L124 PetriNetUnfolderBase]: 3474/6089 cut-off events. [2025-02-08 08:43:37,072 INFO L125 PetriNetUnfolderBase]: For 11914/11914 co-relation queries the response was YES. [2025-02-08 08:43:37,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16553 conditions, 6089 events. 3474/6089 cut-off events. For 11914/11914 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 37999 event pairs, 777 based on Foata normal form. 56/5194 useless extension candidates. Maximal degree in co-relation 13994. Up to 1239 conditions per place. [2025-02-08 08:43:37,091 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 41 selfloop transitions, 11 changer transitions 208/263 dead transitions. [2025-02-08 08:43:37,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 263 transitions, 1761 flow [2025-02-08 08:43:37,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-08 08:43:37,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-02-08 08:43:37,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 403 transitions. [2025-02-08 08:43:37,093 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5186615186615187 [2025-02-08 08:43:37,093 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 504 flow. Second operand 21 states and 403 transitions. [2025-02-08 08:43:37,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 263 transitions, 1761 flow [2025-02-08 08:43:37,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 263 transitions, 1709 flow, removed 10 selfloop flow, removed 4 redundant places. [2025-02-08 08:43:37,108 INFO L231 Difference]: Finished difference. Result has 92 places, 44 transitions, 380 flow [2025-02-08 08:43:37,108 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=380, PETRI_PLACES=92, PETRI_TRANSITIONS=44} [2025-02-08 08:43:37,108 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 56 predicate places. [2025-02-08 08:43:37,109 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 44 transitions, 380 flow [2025-02-08 08:43:37,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 11.458333333333334) internal successors, (275), 24 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) [2025-02-08 08:43:37,109 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:43:37,109 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:43:37,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 08:43:37,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-08 08:43:37,313 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2025-02-08 08:43:37,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:43:37,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1049421786, now seen corresponding path program 5 times [2025-02-08 08:43:37,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:43:37,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486778926] [2025-02-08 08:43:37,314 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 08:43:37,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:43:37,323 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 36 statements into 4 equivalence classes. [2025-02-08 08:43:37,352 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 36 of 36 statements. [2025-02-08 08:43:37,353 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-02-08 08:43:37,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:43:37,904 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 08:43:37,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:43:37,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486778926] [2025-02-08 08:43:37,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486778926] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:43:37,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341419037] [2025-02-08 08:43:37,905 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 08:43:37,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:43:37,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:43:37,907 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:43:37,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 08:43:37,951 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 36 statements into 4 equivalence classes. [2025-02-08 08:43:37,971 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 36 of 36 statements. [2025-02-08 08:43:37,971 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-02-08 08:43:37,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:43:37,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-08 08:43:37,973 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:43:38,044 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-08 08:43:38,044 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:43:38,070 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-02-08 08:43:38,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2025-02-08 08:43:38,091 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-08 08:43:38,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341419037] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:43:38,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:43:38,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 6] total 13 [2025-02-08 08:43:38,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057101998] [2025-02-08 08:43:38,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:43:38,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-08 08:43:38,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:43:38,093 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-08 08:43:38,093 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2025-02-08 08:43:38,113 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2025-02-08 08:43:38,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 44 transitions, 380 flow. Second operand has 14 states, 14 states have (on average 11.714285714285714) internal successors, (164), 14 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:43:38,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:43:38,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2025-02-08 08:43:38,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:43:38,607 INFO L124 PetriNetUnfolderBase]: 1608/2808 cut-off events. [2025-02-08 08:43:38,607 INFO L125 PetriNetUnfolderBase]: For 11048/11048 co-relation queries the response was YES. [2025-02-08 08:43:38,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8679 conditions, 2808 events. 1608/2808 cut-off events. For 11048/11048 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 14690 event pairs, 269 based on Foata normal form. 5/2378 useless extension candidates. Maximal degree in co-relation 7844. Up to 719 conditions per place. [2025-02-08 08:43:38,634 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 80 selfloop transitions, 25 changer transitions 33/141 dead transitions. [2025-02-08 08:43:38,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 141 transitions, 1028 flow [2025-02-08 08:43:38,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 08:43:38,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-08 08:43:38,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 237 transitions. [2025-02-08 08:43:38,639 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49272349272349275 [2025-02-08 08:43:38,639 INFO L175 Difference]: Start difference. First operand has 92 places, 44 transitions, 380 flow. Second operand 13 states and 237 transitions. [2025-02-08 08:43:38,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 141 transitions, 1028 flow [2025-02-08 08:43:38,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 141 transitions, 896 flow, removed 58 selfloop flow, removed 18 redundant places. [2025-02-08 08:43:38,663 INFO L231 Difference]: Finished difference. Result has 73 places, 51 transitions, 494 flow [2025-02-08 08:43:38,663 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=494, PETRI_PLACES=73, PETRI_TRANSITIONS=51} [2025-02-08 08:43:38,664 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 37 predicate places. [2025-02-08 08:43:38,664 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 51 transitions, 494 flow [2025-02-08 08:43:38,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.714285714285714) internal successors, (164), 14 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:43:38,664 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:43:38,664 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:43:38,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 08:43:38,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-02-08 08:43:38,869 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2025-02-08 08:43:38,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:43:38,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1353819727, now seen corresponding path program 6 times [2025-02-08 08:43:38,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:43:38,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102767686] [2025-02-08 08:43:38,872 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 08:43:38,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:43:38,877 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 39 statements into 4 equivalence classes. [2025-02-08 08:43:38,902 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 39 of 39 statements. [2025-02-08 08:43:38,906 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-02-08 08:43:38,906 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:43:39,050 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-08 08:43:39,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:43:39,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102767686] [2025-02-08 08:43:39,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102767686] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:43:39,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367807599] [2025-02-08 08:43:39,050 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 08:43:39,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:43:39,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:43:39,053 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:43:39,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 08:43:39,092 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 39 statements into 4 equivalence classes. [2025-02-08 08:43:39,182 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 39 of 39 statements. [2025-02-08 08:43:39,182 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-02-08 08:43:39,182 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:43:39,183 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 08:43:39,185 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:43:39,240 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-08 08:43:39,240 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:43:39,415 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-08 08:43:39,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367807599] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:43:39,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:43:39,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 6] total 9 [2025-02-08 08:43:39,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261057834] [2025-02-08 08:43:39,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:43:39,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 08:43:39,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:43:39,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 08:43:39,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2025-02-08 08:43:39,418 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2025-02-08 08:43:39,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 51 transitions, 494 flow. Second operand has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:43:39,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:43:39,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2025-02-08 08:43:39,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:43:39,739 INFO L124 PetriNetUnfolderBase]: 2966/5144 cut-off events. [2025-02-08 08:43:39,739 INFO L125 PetriNetUnfolderBase]: For 14147/14147 co-relation queries the response was YES. [2025-02-08 08:43:39,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14735 conditions, 5144 events. 2966/5144 cut-off events. For 14147/14147 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 29520 event pairs, 774 based on Foata normal form. 22/4367 useless extension candidates. Maximal degree in co-relation 10665. Up to 1506 conditions per place. [2025-02-08 08:43:39,758 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 79 selfloop transitions, 29 changer transitions 0/111 dead transitions. [2025-02-08 08:43:39,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 111 transitions, 1156 flow [2025-02-08 08:43:39,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:43:39,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 08:43:39,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2025-02-08 08:43:39,760 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5891891891891892 [2025-02-08 08:43:39,760 INFO L175 Difference]: Start difference. First operand has 73 places, 51 transitions, 494 flow. Second operand 5 states and 109 transitions. [2025-02-08 08:43:39,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 111 transitions, 1156 flow [2025-02-08 08:43:39,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 111 transitions, 953 flow, removed 76 selfloop flow, removed 10 redundant places. [2025-02-08 08:43:39,772 INFO L231 Difference]: Finished difference. Result has 68 places, 69 transitions, 690 flow [2025-02-08 08:43:39,772 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=690, PETRI_PLACES=68, PETRI_TRANSITIONS=69} [2025-02-08 08:43:39,773 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 32 predicate places. [2025-02-08 08:43:39,773 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 69 transitions, 690 flow [2025-02-08 08:43:39,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:43:39,773 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:43:39,773 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:43:39,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-08 08:43:39,974 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,SelfDestructingSolverStorable13 [2025-02-08 08:43:39,974 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2025-02-08 08:43:39,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:43:39,975 INFO L85 PathProgramCache]: Analyzing trace with hash -442685341, now seen corresponding path program 7 times [2025-02-08 08:43:39,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:43:39,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932679040] [2025-02-08 08:43:39,975 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 08:43:39,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:43:39,980 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-02-08 08:43:39,988 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-02-08 08:43:39,988 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:43:39,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:43:40,476 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 08:43:40,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:43:40,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932679040] [2025-02-08 08:43:40,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932679040] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:43:40,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534995886] [2025-02-08 08:43:40,476 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 08:43:40,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:43:40,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:43:40,478 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:43:40,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-08 08:43:40,516 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-02-08 08:43:40,536 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-02-08 08:43:40,536 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:43:40,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:43:40,540 INFO L256 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-08 08:43:40,541 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:43:40,853 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-08 08:43:40,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2025-02-08 08:43:40,863 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 08:43:40,863 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:43:40,896 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-08 08:43:40,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2025-02-08 08:43:41,439 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 08:43:41,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534995886] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:43:41,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:43:41,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2025-02-08 08:43:41,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085668238] [2025-02-08 08:43:41,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:43:41,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-02-08 08:43:41,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:43:41,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-02-08 08:43:41,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=883, Unknown=0, NotChecked=0, Total=1056 [2025-02-08 08:43:41,510 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2025-02-08 08:43:41,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 690 flow. Second operand has 33 states, 33 states have (on average 11.0) internal successors, (363), 33 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:43:41,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:43:41,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2025-02-08 08:43:41,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:43:43,374 INFO L124 PetriNetUnfolderBase]: 5351/9331 cut-off events. [2025-02-08 08:43:43,374 INFO L125 PetriNetUnfolderBase]: For 16452/16452 co-relation queries the response was YES. [2025-02-08 08:43:43,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25149 conditions, 9331 events. 5351/9331 cut-off events. For 16452/16452 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 58805 event pairs, 561 based on Foata normal form. 129/7992 useless extension candidates. Maximal degree in co-relation 14635. Up to 1725 conditions per place. [2025-02-08 08:43:43,430 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 236 selfloop transitions, 80 changer transitions 69/388 dead transitions. [2025-02-08 08:43:43,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 388 transitions, 2692 flow [2025-02-08 08:43:43,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-02-08 08:43:43,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2025-02-08 08:43:43,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 602 transitions. [2025-02-08 08:43:43,437 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5248474280732345 [2025-02-08 08:43:43,437 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 690 flow. Second operand 31 states and 602 transitions. [2025-02-08 08:43:43,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 388 transitions, 2692 flow [2025-02-08 08:43:43,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 388 transitions, 2562 flow, removed 65 selfloop flow, removed 0 redundant places. [2025-02-08 08:43:43,461 INFO L231 Difference]: Finished difference. Result has 112 places, 106 transitions, 1291 flow [2025-02-08 08:43:43,461 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1291, PETRI_PLACES=112, PETRI_TRANSITIONS=106} [2025-02-08 08:43:43,462 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 76 predicate places. [2025-02-08 08:43:43,462 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 106 transitions, 1291 flow [2025-02-08 08:43:43,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 11.0) internal successors, (363), 33 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:43:43,463 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:43:43,463 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:43:43,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-08 08:43:43,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:43:43,667 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2025-02-08 08:43:43,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:43:43,668 INFO L85 PathProgramCache]: Analyzing trace with hash -88876799, now seen corresponding path program 8 times [2025-02-08 08:43:43,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:43:43,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030981140] [2025-02-08 08:43:43,669 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:43:43,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:43:43,674 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-02-08 08:43:43,690 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-02-08 08:43:43,691 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:43:43,691 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:43:43,943 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-08 08:43:43,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:43:43,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030981140] [2025-02-08 08:43:43,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030981140] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:43:43,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680971622] [2025-02-08 08:43:43,944 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:43:43,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:43:43,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:43:43,951 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:43:43,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-08 08:43:43,990 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-02-08 08:43:44,009 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-02-08 08:43:44,009 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:43:44,009 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:43:44,010 INFO L256 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-08 08:43:44,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:43:44,322 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 22 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-08 08:43:44,322 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:43:44,481 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-08 08:43:44,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2025-02-08 08:43:44,565 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-08 08:43:44,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680971622] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:43:44,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:43:44,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2025-02-08 08:43:44,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574365005] [2025-02-08 08:43:44,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:43:44,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-08 08:43:44,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:43:44,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-08 08:43:44,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=465, Unknown=0, NotChecked=0, Total=600 [2025-02-08 08:43:44,598 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2025-02-08 08:43:44,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 106 transitions, 1291 flow. Second operand has 25 states, 25 states have (on average 10.96) internal successors, (274), 25 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:43:44,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:43:44,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2025-02-08 08:43:44,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:43:45,525 INFO L124 PetriNetUnfolderBase]: 6019/10499 cut-off events. [2025-02-08 08:43:45,525 INFO L125 PetriNetUnfolderBase]: For 29396/29396 co-relation queries the response was YES. [2025-02-08 08:43:45,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29953 conditions, 10499 events. 6019/10499 cut-off events. For 29396/29396 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 69464 event pairs, 2406 based on Foata normal form. 2/8844 useless extension candidates. Maximal degree in co-relation 27430. Up to 4746 conditions per place. [2025-02-08 08:43:45,572 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 75 selfloop transitions, 10 changer transitions 119/207 dead transitions. [2025-02-08 08:43:45,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 207 transitions, 2278 flow [2025-02-08 08:43:45,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 08:43:45,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-08 08:43:45,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 217 transitions. [2025-02-08 08:43:45,576 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45114345114345117 [2025-02-08 08:43:45,576 INFO L175 Difference]: Start difference. First operand has 112 places, 106 transitions, 1291 flow. Second operand 13 states and 217 transitions. [2025-02-08 08:43:45,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 207 transitions, 2278 flow [2025-02-08 08:43:45,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 207 transitions, 2109 flow, removed 61 selfloop flow, removed 9 redundant places. [2025-02-08 08:43:45,657 INFO L231 Difference]: Finished difference. Result has 116 places, 76 transitions, 783 flow [2025-02-08 08:43:45,657 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1158, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=783, PETRI_PLACES=116, PETRI_TRANSITIONS=76} [2025-02-08 08:43:45,658 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 80 predicate places. [2025-02-08 08:43:45,659 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 76 transitions, 783 flow [2025-02-08 08:43:45,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.96) internal successors, (274), 25 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:43:45,659 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:43:45,659 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:43:45,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-08 08:43:45,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-02-08 08:43:45,864 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2025-02-08 08:43:45,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:43:45,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1359440439, now seen corresponding path program 9 times [2025-02-08 08:43:45,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:43:45,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936812987] [2025-02-08 08:43:45,864 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:43:45,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:43:45,870 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 44 statements into 5 equivalence classes. [2025-02-08 08:43:45,881 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 40 of 44 statements. [2025-02-08 08:43:45,881 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-08 08:43:45,881 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:43:46,043 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-08 08:43:46,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:43:46,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936812987] [2025-02-08 08:43:46,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936812987] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:43:46,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103941061] [2025-02-08 08:43:46,043 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:43:46,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:43:46,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:43:46,048 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:43:46,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-08 08:43:46,086 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 44 statements into 5 equivalence classes. [2025-02-08 08:43:46,237 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 40 of 44 statements. [2025-02-08 08:43:46,237 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-08 08:43:46,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:43:46,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-08 08:43:46,241 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:43:46,376 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-08 08:43:46,376 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:43:46,496 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-08 08:43:46,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2025-02-08 08:43:46,584 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-08 08:43:46,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103941061] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:43:46,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:43:46,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-02-08 08:43:46,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576230202] [2025-02-08 08:43:46,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:43:46,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 08:43:46,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:43:46,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 08:43:46,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2025-02-08 08:43:46,585 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2025-02-08 08:43:46,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 76 transitions, 783 flow. Second operand has 18 states, 18 states have (on average 12.277777777777779) internal successors, (221), 18 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:43:46,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:43:46,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2025-02-08 08:43:46,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:43:47,259 INFO L124 PetriNetUnfolderBase]: 4615/7927 cut-off events. [2025-02-08 08:43:47,259 INFO L125 PetriNetUnfolderBase]: For 29449/29449 co-relation queries the response was YES. [2025-02-08 08:43:47,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23709 conditions, 7927 events. 4615/7927 cut-off events. For 29449/29449 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 47877 event pairs, 887 based on Foata normal form. 23/6719 useless extension candidates. Maximal degree in co-relation 23674. Up to 2111 conditions per place. [2025-02-08 08:43:47,281 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 0 selfloop transitions, 0 changer transitions 159/159 dead transitions. [2025-02-08 08:43:47,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 159 transitions, 1550 flow [2025-02-08 08:43:47,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 08:43:47,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 08:43:47,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2025-02-08 08:43:47,282 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.543918918918919 [2025-02-08 08:43:47,282 INFO L175 Difference]: Start difference. First operand has 116 places, 76 transitions, 783 flow. Second operand 8 states and 161 transitions. [2025-02-08 08:43:47,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 159 transitions, 1550 flow [2025-02-08 08:43:47,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 159 transitions, 1178 flow, removed 73 selfloop flow, removed 29 redundant places. [2025-02-08 08:43:47,303 INFO L231 Difference]: Finished difference. Result has 74 places, 0 transitions, 0 flow [2025-02-08 08:43:47,303 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=74, PETRI_TRANSITIONS=0} [2025-02-08 08:43:47,303 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 38 predicate places. [2025-02-08 08:43:47,303 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 0 transitions, 0 flow [2025-02-08 08:43:47,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.277777777777779) internal successors, (221), 18 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:43:47,305 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 14 remaining) [2025-02-08 08:43:47,305 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2025-02-08 08:43:47,305 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2025-02-08 08:43:47,305 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2025-02-08 08:43:47,306 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 14 remaining) [2025-02-08 08:43:47,306 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 14 remaining) [2025-02-08 08:43:47,306 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (7 of 14 remaining) [2025-02-08 08:43:47,306 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (6 of 14 remaining) [2025-02-08 08:43:47,306 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2025-02-08 08:43:47,306 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2025-02-08 08:43:47,306 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 14 remaining) [2025-02-08 08:43:47,306 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 14 remaining) [2025-02-08 08:43:47,306 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 14 remaining) [2025-02-08 08:43:47,306 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 14 remaining) [2025-02-08 08:43:47,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-08 08:43:47,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:43:47,507 INFO L422 BasicCegarLoop]: Path program histogram: [9, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:43:47,510 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-08 08:43:47,511 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 08:43:47,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 08:43:47 BasicIcfg [2025-02-08 08:43:47,513 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 08:43:47,514 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 08:43:47,514 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 08:43:47,514 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 08:43:47,515 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:43:28" (3/4) ... [2025-02-08 08:43:47,515 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-08 08:43:47,517 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-02-08 08:43:47,517 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-02-08 08:43:47,520 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 64 nodes and edges [2025-02-08 08:43:47,520 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2025-02-08 08:43:47,520 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2025-02-08 08:43:47,520 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-02-08 08:43:47,577 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-08 08:43:47,578 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-08 08:43:47,578 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 08:43:47,579 INFO L158 Benchmark]: Toolchain (without parser) took 20430.39ms. Allocated memory was 511.7MB in the beginning and 620.8MB in the end (delta: 109.1MB). Free memory was 474.7MB in the beginning and 363.9MB in the end (delta: 110.9MB). Peak memory consumption was 220.1MB. Max. memory is 16.1GB. [2025-02-08 08:43:47,579 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory was 126.2MB in the beginning and 125.9MB in the end (delta: 307.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:43:47,580 INFO L158 Benchmark]: CACSL2BoogieTranslator took 292.82ms. Allocated memory was 511.7MB in the beginning and 142.6MB in the end (delta: -369.1MB). Free memory was 474.7MB in the beginning and 94.7MB in the end (delta: 380.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 08:43:47,580 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.62ms. Allocated memory is still 142.6MB. Free memory was 94.7MB in the beginning and 93.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:43:47,580 INFO L158 Benchmark]: Boogie Preprocessor took 31.84ms. Allocated memory is still 142.6MB. Free memory was 93.2MB in the beginning and 90.9MB in the end (delta: 2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 08:43:47,580 INFO L158 Benchmark]: IcfgBuilder took 515.20ms. Allocated memory is still 142.6MB. Free memory was 90.9MB in the beginning and 55.1MB in the end (delta: 35.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-02-08 08:43:47,581 INFO L158 Benchmark]: TraceAbstraction took 19483.39ms. Allocated memory was 142.6MB in the beginning and 620.8MB in the end (delta: 478.2MB). Free memory was 55.1MB in the beginning and 371.2MB in the end (delta: -316.0MB). Peak memory consumption was 396.2MB. Max. memory is 16.1GB. [2025-02-08 08:43:47,581 INFO L158 Benchmark]: Witness Printer took 64.06ms. Allocated memory is still 620.8MB. Free memory was 371.2MB in the beginning and 363.9MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 08:43:47,582 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory was 126.2MB in the beginning and 125.9MB in the end (delta: 307.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 292.82ms. Allocated memory was 511.7MB in the beginning and 142.6MB in the end (delta: -369.1MB). Free memory was 474.7MB in the beginning and 94.7MB in the end (delta: 380.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.62ms. Allocated memory is still 142.6MB. Free memory was 94.7MB in the beginning and 93.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.84ms. Allocated memory is still 142.6MB. Free memory was 93.2MB in the beginning and 90.9MB in the end (delta: 2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 515.20ms. Allocated memory is still 142.6MB. Free memory was 90.9MB in the beginning and 55.1MB in the end (delta: 35.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 19483.39ms. Allocated memory was 142.6MB in the beginning and 620.8MB in the end (delta: 478.2MB). Free memory was 55.1MB in the beginning and 371.2MB in the end (delta: -316.0MB). Peak memory consumption was 396.2MB. Max. memory is 16.1GB. * Witness Printer took 64.06ms. Allocated memory is still 620.8MB. Free memory was 371.2MB in the beginning and 363.9MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 70]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 51 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 19.4s, OverallIterations: 17, TraceHistogramMax: 4, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 8.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1902 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1866 mSDsluCounter, 365 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 361 mSDsCounter, 114 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5604 IncrementalHoareTripleChecker+Invalid, 5718 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 114 mSolverCounterUnsat, 4 mSDtfsCounter, 5604 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 698 GetRequests, 461 SyntacticMatches, 1 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1590 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1291occurred in iteration=15, InterpolantAutomatonStates: 145, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 7.5s InterpolantComputationTime, 680 NumberOfCodeBlocks, 664 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 914 ConstructedInterpolants, 68 QuantifiedInterpolants, 9793 SizeOfPredicates, 68 NumberOfNonLiveVariables, 1597 ConjunctsInSsa, 154 ConjunctsInUnsatCore, 34 InterpolantComputations, 9 PerfectInterpolantSequences, 356/663 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-08 08:43:47,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE